CN115061448A - Whole vehicle static current testing method under rain working condition - Google Patents
Whole vehicle static current testing method under rain working condition Download PDFInfo
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- 239000007921 spray Substances 0.000 claims description 8
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
A method for testing the static current of a whole vehicle under the rain condition. Parking the vehicle to be tested in a rain environment bin, and disconnecting the cathode of the storage battery from the vehicle to be tested; after the current acquisition module is connected in series between the negative pole of the wire harness and the negative pole of the storage battery, a CAN data recorder is installed; checking power supply modes of all ECUs of the whole vehicle to be tested, a quiescent current design target and a whole vehicle network sleep awakening condition; performing test operation at normal temperature to ensure the validity of relevant signals of a tested part, and debugging equipment to ensure the integrity of acquired data; closing a cab door, and opening an ignition switch ON gear to wait for a period of time; turning off an ON gear of an ignition switch, locking the vehicle and confirming that the anti-theft system is activated, and keeping the vehicle in a standby state without alarming; after the whole vehicle network of the vehicle to be tested is dormant and the static current of the whole vehicle is stable, testing is carried out, and continuous testing is carried out for a period of time; and in the testing period, whether the whole vehicle network of the vehicle to be tested is abnormally awakened or not and whether the static current is abnormally overproof or not is observed.
Description
Technical Field
The invention relates to the technical field of finished automobile static current testing methods, in particular to a finished automobile static current testing method under a rain condition.
Background
At present, with the iterative upgrade of automobile products, many automobile models are configured with a keyless entry function. Vehicles equipped with this function may employ corresponding inductive switches on the door handle. When a driver touches the switch, the vehicle recognizes the key signal, and the vehicle door is automatically unlocked. Therefore, calibration of the sensitivity of the inductive switch is of great importance. When a vehicle is parked outdoors and meets the rain working condition, rainwater can cause the situation that a keyless entry switch of the vehicle triggers false recognition and the like, so that the vehicle network is abnormally awakened or the static current exceeds the standard, the power of a vehicle storage battery is reduced, the service life of the battery is influenced, and even the vehicle cannot be started, so that the use of a user is influenced. In addition, the vehicle with the light and rain sensor also has the possibility of causing the abnormal awakening of the whole vehicle network under the rain condition.
In the prior art, patent document CN111398657A discloses "a device and a method for testing the quiescent current of a whole electric vehicle", wherein the testing device includes a digital multimeter and a data collector; the digital multimeter is provided with a meter pen positive connecting piece and a meter pen negative connecting piece, and a switch is connected between the meter pen positive connecting piece and the meter pen negative connecting piece; the positive connecting piece of the meter pen is used for connecting a positive connecting terminal of the static low-voltage circuit, and the negative connecting piece of the meter pen is used for connecting a positive pole of a battery in the static low-voltage circuit; the data acquisition unit is electrically connected with the digital multimeter and is used for acquiring and storing the current tested by the digital multimeter; the switch is in a closed state when the digital multimeter is connected in series on the electrostatic low-voltage circuit, and is in an open state during measurement; by adopting the technical scheme, the quiescent current of the whole vehicle in the existing pure electric vehicle can be effectively measured, and the measuring device is reasonable and simple in structure and convenient to operate. Patent document CN112014617A discloses "a method, a testing device, and a system for testing the quiescent current of a whole vehicle", where when the testing device is used to perform a test on the quiescent current of a whole vehicle, the testing device obtains a test mode input by a user and a control signal sent by a whole vehicle controller, where when the test mode is a charging test mode, the control signal includes: when the vehicle locking signal, the charging completion signal and the charging gun connection signal are received, it is determined that the vehicle under test is charged, and at this time, it is required to obtain the message state of the vehicle under test and the output current of the storage battery within the first preset time, so that whether the vehicle under test takes measures or not and whether the measures taken are appropriate or not can be judged. Optionally, when the testing device obtains the output current of the storage battery, the real-time voltage of the storage battery can be obtained at the same time, so that the power consumption of the storage battery can be obtained, and the power supply capacity of the storage battery can be conveniently judged.
However, in the prior art, a method for testing the static current of the whole vehicle under the rain condition is not provided, so that whether the function of the system meets the engineering target of the whole vehicle development or not cannot be determined due to the fact that relevant functions are not verified in the production and manufacturing process, once the vehicle which cannot meet the design target directly flows into the market, the storage battery of the vehicle is easily insufficient, the service life of the battery is influenced, and even the vehicle cannot be started, and the use of a user is influenced.
Disclosure of Invention
The invention solves the problem that the prior art can not effectively test the static current of the whole vehicle under the rain condition, so that the quality verification and evaluation of the performance of the vehicle battery can not be carried out.
The invention relates to a method for testing the static current of a whole vehicle under the rain condition, which comprises the following steps:
step S1, parking the vehicle to be tested in a rain environment bin, and disconnecting the negative electrode of the storage battery from the vehicle to be tested;
step S2, after the current acquisition module is connected in series between the negative pole of the wire harness and the negative pole of the storage battery, a CAN data recorder is installed;
step S3, checking the power supply mode, the static current design target and the sleep awakening condition of the whole vehicle network of the whole vehicle to be tested;
step S4, performing trial operation at normal temperature to ensure the validity of the relevant signals of the tested part, and debugging equipment to ensure the integrity of the acquired data;
step S5, entering a cab, closing the cab door, and opening an ignition switch ON gear to wait for a period of time;
step S6, closing an ignition switch ON gear, closing a vehicle door, locking the vehicle and confirming that the anti-theft system is activated, and the vehicle is in a standby state without alarming;
step S7, testing the whole vehicle network of the vehicle to be tested after sleeping and the static current of the whole vehicle is stable, and continuously testing for a period of time;
and step S8, observing whether the whole vehicle network of the vehicle to be tested is abnormally awakened or not and whether the static current is abnormal and exceeds the standard or not during the test.
Further, in an embodiment of the present invention, in the step S1, the vehicle to be tested is:
a vehicle with a door handle for keyless entry and a wind and light barrier rain sensor arrangement.
Further, in an embodiment of the present invention, in the step S2, the sampling rate of the current collecting module is greater than or equal to 1 KHz.
Further, in an embodiment of the present invention, in step S2, the CAN data recorder is used for monitoring and recording CAN signals.
Further, in an embodiment of the present invention, the CAN signal includes a sleep wake-up state of the ECU of the entire vehicle.
Further, in an embodiment of the present invention, in the step S4, the measured-part related signal includes a voltage, a current and a temperature.
Further, in an embodiment of the present invention, in the step S5, the waiting time is 3 minutes.
Further, in an embodiment of the present invention, in the step S5, the continuous test is performed for a period of time greater than or equal to 2 hours.
Further, in an embodiment of the present invention, in the step S7, the specific process of performing the test includes:
the rain spray head of the environment bin sprays water to the light rainfall sensor of the vehicle windshield to be tested and the keyless entry switch of the vehicle door handle, and the rain working condition is simulated.
The invention solves the problem that the prior art can not effectively test the static current of the whole vehicle under the rain condition, so that the quality verification and evaluation of the performance of the vehicle battery can not be carried out. The method has the following specific beneficial effects:
the method for testing the static current of the whole vehicle under the rain condition is used for monitoring whether the static current of the whole vehicle network is abnormally awakened or exceeds the standard under the rain condition of the vehicle with the keyless entry function, can effectively monitor the static current of the whole vehicle under the rain condition of the whole vehicle, and is convenient for finding problems and solving problems through subsequent analysis.
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The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a test apparatus according to an embodiment.
Fig. 2 is an illustration of power supply modes and electrostatic current labels of DUTs of the entire vehicle according to the embodiment.
Fig. 3 is a diagram illustrating a sleep wake-up condition of a vehicle network according to an embodiment.
Detailed Description
Various embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The embodiments described by referring to the drawings are exemplary for the purpose of illustrating the invention and are not to be construed as limiting the invention.
The method for testing the static current of the whole vehicle under the rain condition comprises the following steps:
step S1, parking the vehicle to be tested in a rain environment bin, and disconnecting the negative electrode of the storage battery from the vehicle to be tested;
step S2, after the current acquisition module is connected in series between the negative pole of the wire harness and the negative pole of the storage battery, a CAN data recorder is installed;
step S3, checking the power supply mode, the static current design target and the sleep awakening condition of the whole vehicle network of the whole vehicle to be tested;
step S4, performing trial operation at normal temperature to ensure the validity of the relevant signals of the tested part, and debugging equipment to ensure the integrity of the acquired data;
step S5, entering a cab, closing the cab door, and opening an ignition switch ON gear to wait for a period of time;
step S6, turning off the ON gear of the ignition switch, closing the vehicle door, locking the vehicle and confirming the activation of the anti-theft system, and being in the standby state without alarming;
step S7, testing the whole vehicle network of the vehicle to be tested after sleeping and the static current of the whole vehicle is stable, and continuously testing for a period of time;
and step S8, observing whether the whole vehicle network of the vehicle to be tested is abnormally awakened or not and whether the static current is abnormal and exceeds the standard or not during the test.
In this embodiment, in step S1, the vehicle to be tested is:
the door handle is used for keyless entry and a vehicle with a wind-light-blocking rain sensor.
In this embodiment, in step S2, the sampling rate of the current collection module is greater than or equal to 1 KHz.
In this embodiment, in step S2, the CAN data recorder is used for monitoring and recording the CAN signal.
In this embodiment, the CAN signal includes a sleep wake-up state of the ECU of the entire vehicle.
In this embodiment, in step S4, the measured-part related signal includes a voltage, a current, and a temperature.
In this embodiment, in the step S5, the waiting time is 3 minutes.
In this embodiment, in the step S5, the continuous test is performed for a period of time equal to or longer than 2 hours.
In this embodiment, in the step S7, the specific process of performing the test includes:
the rain spray head of the environment bin sprays water to the light rainfall sensor of the vehicle windshield to be tested and the keyless entry switch of the vehicle door handle, and the rain working condition is simulated.
The embodiment is based on the method for testing the static current of the whole vehicle under the rain condition, and provides an actual embodiment by combining specific objects:
the whole vehicle static current test under the rain working condition requires a current acquisition module, a module sampling rate is more than or equal to 1KHz, a data recorder and a rain environment bin, and the installation schematic diagram of the test equipment is shown in figure 1.
The test procedure is as follows:
1) the testing method only aims at the vehicle type with keyless entry and light rainfall sensor configuration;
2) parking the vehicle in a rain environment cabin;
3) disconnecting the battery negative electrode from the vehicle;
4) connecting a current acquisition module between the negative pole of the wire harness and the negative pole of the storage battery in series;
5) the CAN data recorder is used for monitoring and recording CAN signals at least comprising a sleep awakening state of an ECU of the whole vehicle;
6) before testing, checking power supply modes and quiescent current design targets of all ECUs of the whole vehicle and sleep awakening conditions of a whole vehicle network;
the whole vehicle ECU power supply mode and the static current target are shown in fig. 2, for example, in this embodiment, the whole vehicle static current of the vehicle to be tested is 9.5mA, and if the static current does not conform to the value, it is detected one by one whether the current of each component conforms to the corresponding target value, for example, the static current target value of the vehicle door controller is 0.8mA, the static current target value of the power amplifier is 0.3mA, and the like, and in addition, the whole vehicle static current values of different vehicle types are also different;
fig. 3 shows an example of the vehicle network sleep wake-up condition, in this embodiment, the PEPS and BCM1 are determined for the vehicle to be tested, if the network sleep condition satisfies the PEPS and BCM1 instructions, the condition is satisfied, and if the wake-up condition satisfies the PEPS and BCM1 instructions, the condition is satisfied;
7) performing test operation at normal temperature to ensure the validity of signals such as voltage, current, temperature and the like of a tested part, and debugging equipment to ensure the integrity of acquired data;
8) entering a cab, and closing a cab door;
9) turning ON an ignition switch ON gear for waiting for 3 minutes;
10) closing an ignition switch and closing a vehicle door;
11) locking the vehicle and confirming that the anti-theft system is activated, and being in a standby state without alarming;
12) after the whole vehicle network is dormant and the static current of the whole vehicle is stable, the rain spray nozzle of the environmental chamber sprays water to the light rain sensor of the automobile windshield and the keyless entry switch of the door handle, so that the rain condition is simulated;
13) the test time is continuously more than or equal to 2 hours;
14) and observing whether the whole vehicle network is abnormally awakened or not and whether the whole vehicle static current is abnormally overproof or not during the test.
The method and the system for calculating the efficiency of the electric drive system provided by the invention are described in detail, specific examples are applied in the method for explaining the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A method for testing the static current of a whole vehicle under a rain condition is characterized by comprising the following steps:
step S1, parking the vehicle to be tested in a rain environment bin, and disconnecting the negative electrode of the storage battery from the vehicle to be tested;
step S2, after the current acquisition module is connected in series between the negative pole of the wire harness and the negative pole of the storage battery, a CAN data recorder is installed;
step S3, checking power supply modes of all ECUs of the whole vehicle to be tested, a quiescent current design target and a whole vehicle network sleep awakening condition;
step S4, performing trial operation at normal temperature to ensure the validity of the relevant signals of the tested part, and debugging equipment to ensure the integrity of the acquired data;
step S5, entering a cab, closing the cab door, and opening an ignition switch ON gear to wait for a period of time;
step S6, turning off the ON gear of the ignition switch, closing the vehicle door, locking the vehicle and confirming the activation of the anti-theft system, and being in the standby state without alarming;
step S7, testing the whole vehicle network of the vehicle to be tested after sleeping and the static current of the whole vehicle is stable, and continuously testing for a period of time;
and step S8, observing whether the whole vehicle network of the vehicle to be tested is abnormally awakened or not and whether the static current is abnormal and exceeds the standard or not during the test.
2. The method according to claim 1, wherein in step S1, the vehicle to be tested is:
the door handle is used for keyless entry and a vehicle with a wind-light-blocking rain sensor.
3. The method for testing the static current of the whole vehicle under the rain condition according to claim 1, wherein in the step S2, the sampling rate of the current acquisition module is more than or equal to 1 KHz.
4. The method as claimed in claim 1, wherein in step S2, the CAN data recorder is used for monitoring and recording CAN signals.
5. The method according to claim 4, wherein the CAN signal comprises a sleep wake-up state of an ECU of the whole vehicle.
6. The method as claimed in claim 1, wherein in step S4, the signals related to the measured part include voltage, current and temperature.
7. The method as claimed in claim 1, wherein in step S5, the waiting time is 3 minutes.
8. The method of claim 1, wherein the continuous testing in step S5 is performed for a period of time greater than or equal to 2 hours.
9. The method according to claim 1, wherein in step S7, the specific process of performing the test is as follows:
the rain spray head of the environment bin sprays water to the light rainfall sensor of the vehicle windshield to be tested and the keyless entry switch of the vehicle door handle, and the rain working condition is simulated.
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Cited By (1)
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CN115616271A (en) * | 2022-09-23 | 2023-01-17 | 一汽奔腾轿车有限公司 | Finished automobile static current testing system and method |
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