CN117969932A - Static current testing device and method and vehicle - Google Patents
Static current testing device and method and vehicle Download PDFInfo
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- CN117969932A CN117969932A CN202410378793.4A CN202410378793A CN117969932A CN 117969932 A CN117969932 A CN 117969932A CN 202410378793 A CN202410378793 A CN 202410378793A CN 117969932 A CN117969932 A CN 117969932A
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
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- 238000013480 data collection Methods 0.000 claims description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
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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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
The invention provides a static current testing device, a static current testing method and a vehicle, which belong to the technical field of static current testing, wherein the static current testing device comprises: the vehicle control system comprises a power supply, a switch unit and a data acquisition module, wherein the switch unit and the data acquisition module are sequentially connected in series between the power supply and a vehicle control system, and the vehicle control system is configured to output a first signal to the switch unit and a second signal to a power supply unit when a vehicle is in a dormant state; the switching unit is configured to respond to the first signal and conduct a power supply loop between the power supply and the whole vehicle controller system; the power supply unit is configured to respond to the second signal and disconnect the connection with the whole vehicle control; and the data acquisition module is configured to acquire the static current in the power supply loop when the power supply loop is conducted. The static current testing device provided by the invention can be used for testing the static current under the condition that the whole vehicle controller system is not powered off.
Description
Technical Field
The invention belongs to the technical field of static current testing, and particularly relates to a static current testing device, a static current testing method and a vehicle.
Background
The intelligent and electric control of the vehicle makes the controllers more and more, the logic of the controllers is more and more complex, and the problem of automobile power shortage caused by the out-of-standard quiescent current of the controllers is more and more. Because the automobile cannot be started after power deficiency, the influence is large, the problem severity level is high, and the strong complaint of customers is easy to cause. Most of the static current exceeding faults of the controller are sporadic, the faults are not repeated after the sporadic faults occur, the whole vehicle controller resets the system and is more difficult to reproduce the faults after power failure, long-time repeated investigation is needed, and part of the faults also have the problems that the faults are not repeated all the time after power failure, and the power failure cannot be solved repeatedly.
Disclosure of Invention
In view of the foregoing, embodiments of the present application provide a static current testing device, a static current testing method, and a vehicle, so as to overcome or at least partially solve the foregoing problems.
The embodiment of the application provides a static current testing device, which is used for being connected with a whole vehicle controller system, wherein the whole vehicle controller system is also connected with a power supply unit; the static current testing device comprises a power supply, a switch unit and a data acquisition module, wherein the switch unit and the data acquisition module are sequentially connected in series between the power supply and the whole vehicle controller system; wherein:
the whole vehicle controller system is configured to output a first signal to the switch unit and a second signal to the power supply unit when the vehicle is in a dormant state;
The switch unit is configured to respond to the first signal and conduct a power supply loop between the power supply and the whole vehicle controller system;
The power supply unit is configured to respond to the second signal and disconnect the connection with the whole vehicle control;
The data acquisition module is configured to acquire the static current in the power supply loop when the power supply loop is conducted.
Optionally, the data acquisition module includes: the current acquisition unit and the data acquisition unit;
The data acquisition unit is connected in parallel with two ends of the current acquisition unit and is connected with the whole vehicle controller system;
the current acquisition unit is configured to detect current or voltage on the power supply loop and upload the current or the voltage to the data acquisition unit;
the data acquisition unit is configured to generate a target current based on the current or the voltage and upload the target current to the vehicle controller system.
Optionally, the current collection unit includes a current sensor or a precision resistor.
Optionally, the static current testing device further includes: a diode; the positive electrode of the diode is connected with the switch unit, and the negative electrode of the diode is connected with the data acquisition module.
Optionally, the static current testing device further includes: a fuse; the fuse is connected in series between the switch unit and the data acquisition module;
the fuse is configured to limit a voltage or a current input to the power supply loop within a preset range.
Optionally, the whole vehicle controller system includes: the central control unit and the vehicle-mounted wireless terminal;
One end of the central control unit is connected with the switch unit and the power supply unit respectively, the other end of the central control unit is connected with one end of the vehicle-mounted wireless terminal, and the other end of the vehicle-mounted wireless terminal is connected with the data acquisition module;
the vehicle-mounted wireless terminal is configured to detect the state of the vehicle and send out a wake-up instruction to act on the central control unit when the vehicle is in the dormant state;
The central control unit is configured to output the first signal to the switching unit and the second signal to the power supply unit in response to the wake-up instruction.
In a second aspect of the embodiment of the present application, a static current testing method is provided, which is applied to the static current testing device in the first aspect of the embodiment of the present application, where the method includes:
determining whether the vehicle enters a sleep state based on an amount of electric energy decrease of a power supply unit and a vehicle state;
outputting a first signal to a switch unit through a whole vehicle controller system under the condition that the vehicle is in the dormant state, so as to conduct a power supply loop between a power supply and the whole vehicle controller system;
Outputting a second signal to the power supply unit through the whole vehicle controller system based on the conduction of the power supply loop so as to disconnect the power supply unit from the whole vehicle controller system;
and collecting the static current in the power supply loop through the data collection module when the power supply loop is conducted.
Optionally, after the data acquisition module acquires the quiescent current in the power supply loop when the power supply loop is turned on, the method further includes:
Outputting a first signal to the power supply unit through the whole vehicle controller system so as to conduct connection between the power supply unit and the whole vehicle controller system;
Based on the connection between the power supply unit and the whole vehicle controller system, outputting a second signal to the switch unit through the whole vehicle controller system so as to disconnect the power supply loop;
And stopping the data acquisition module from acquiring the static current in the power supply loop when the power supply loop is disconnected.
Optionally, the determining whether the vehicle enters the sleep state based on the electric energy decrease amount of the power supply unit and the vehicle state includes:
Acquiring the electric energy descending quantity of the power supply unit in unit time;
When the electric energy reduction exceeds a preset threshold value, acquiring data information of the vehicle; wherein the data information includes: the vehicle lock information and the network management message send information;
And determining that the vehicle is in a dormant state when the data information indicates that the vehicle is in a vehicle locking state and the network management message is not in a sending state.
According to a third aspect of the embodiment of the application, a vehicle is provided, and the vehicle comprises the static current testing device according to the first aspect of the embodiment of the application.
The static current testing device provided by the application is connected with the whole vehicle controller system when applied to a vehicle, and the whole vehicle controller system is also connected with the power supply unit; the static current testing device comprises a power supply, a switch unit and a data acquisition module, wherein the switch unit and the data acquisition module are sequentially connected in series between the power supply and a whole vehicle controller system, and the whole vehicle controller system is configured to output a first signal to the switch unit and a second signal to a power supply unit when a vehicle is in a dormant state; the switching unit is configured to respond to the first signal and conduct a power supply loop between the power supply and the whole vehicle controller system; the power supply unit is configured to respond to the second signal and disconnect the connection with the whole vehicle control; and the data acquisition module is configured to acquire the static current in the power supply loop when the power supply loop is conducted. Therefore, by means of the static current testing device provided by the embodiment, the static current testing can be performed on the whole vehicle controller system under the condition that the whole vehicle controller system is disconnected with the power supply unit, the current fault phenomenon of the whole vehicle controller system is maintained, the fault state is repeated, and the problems that the power consumption is repeated for many times and cannot be solved due to the fact that the power supply unit is disconnected with the whole vehicle controller system and the connection between the power supply unit and the whole vehicle controller system is not repeated all the time after the power failure exists are prevented.
In addition, the static current testing device provided by the application can also be used for maintaining the vehicle to conduct static current testing under the condition of no power failure, and solving the problem that the static current testing data is unreliable due to the failure of the power supply unit under the condition of ensuring the controllable testing precision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a static current testing device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a module refinement of a static current testing apparatus according to an embodiment of the present application;
fig. 3 is a schematic circuit diagram of a static current testing device according to an embodiment of the present application;
FIG. 4 is a flowchart showing steps of a method for testing a quiescent current according to an embodiment of the present application;
Reference numerals:
100-a static current testing device; 200-a whole vehicle controller system; 300-a power supply unit; 101-a power supply; 102-a switching unit; 1021-a first latching relay; 103-a data acquisition module; 1031-a current collection unit; 1032—a data acquisition unit; 104-a diode; 105-fuses; 201-a central control unit; 202-an on-vehicle wireless terminal; 301-an on-vehicle battery; 302-a second latching relay.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
In the related art, for the static current test under the condition of no power failure, a current clamp test or a wire cutting method is generally selected to be connected with data acquisition equipment for testing, when the current clamp test is selected, due to the characteristics of the current clamp, errors are large when the static current test is carried out, data cannot be recorded for a long time, and when the wire cutting method is selected for carrying out the static current test, the wire harness of the whole vehicle is required to be damaged, the operation difficulty is high, so the static current test of the vehicle is still an urgent problem to be solved.
Accordingly, the present application provides a static current testing device, a static current testing method and a vehicle for solving the above problems, ensuring that the static current test is performed in a state that the vehicle is not powered off, maintaining a fault phenomenon, preventing a power-off operation from disappearing the fault, and ensuring the accuracy and reliability of static current test data.
Referring to fig. 1, fig. 1 is a schematic block diagram of a static current testing device according to an embodiment of the present application; as can be seen from fig. 1, the quiescent current testing device 100 is connected with a vehicle controller system 200, and the vehicle controller system 200 is also connected with a power supply unit 300; the static current testing device 100 includes a power supply 101, a switching unit 102, and a data acquisition module 103.
The connection relationship among the power supply 101, the switch unit 102 and the data acquisition module 103 is as follows:
The switch unit 102 and the data acquisition module 103 are sequentially connected in series between the power supply 101 and the whole vehicle controller system 200.
The functions of the whole vehicle controller system 200, the power supply 101, the switch unit 102 and the data acquisition module 103 are respectively configured as follows:
The vehicle controller system 200 is configured to output a first signal to the switch unit 102 and a second signal to the power supply unit 300 when the vehicle is in a sleep state; the switch unit 102 is configured to conduct a power supply loop between the power supply 101 and the whole vehicle controller system 200 in response to the first signal; the power supply unit 300 is configured to disconnect the connection with the vehicle control in response to the second signal;
The data acquisition module 103 is configured to acquire a quiescent current in the power supply loop when the power supply loop is turned on.
In this embodiment, the function of the whole vehicle controller system 200 is to take charge of normal running of the vehicle, braking energy feedback, energy management, network management, fault diagnosis and processing of the whole vehicle engine and power battery, vehicle state monitoring and the like, so as to ensure that the vehicle normally and stably works in a better dynamic, higher economical and reliable state, the whole vehicle controller system 200 comprises various electronic devices on the vehicle, the whole vehicle controller system 200 is used as a main consumption of the storage battery on the vehicle, when the vehicle is in a dormant state, the current output by the whole vehicle controller system 200 by the storage battery is a static current, the static current is used for prolonging the service time and service life of the storage battery, the current of the static current is generally very low, and when the vehicle is in the dormant state, the electric energy consumption of the whole vehicle controller system 200 by the storage battery is very low, but when the whole vehicle controller system 200 or the storage battery breaks down, a large amount of the storage battery is consumed even when the vehicle is in the dormant state, the fault is generally known under the condition that the storage battery consumes energy, and in order to eliminate the power consumption of the storage battery, and other systems or devices interfere with the running or starting of the storage battery can select whether the static current is detected to determine whether the fault control system exists.
The power supply unit 300 is a circuit for providing electric energy to the vehicle, the power supply unit 300 may be a combined power supply circuit of a storage battery and a switch on the vehicle, and the switch may be controlled to be turned on and off by the vehicle controller system 200, and the selection of the switch may be specifically described with reference to the switch unit 102.
The power supply 101 is a direct current voltage source with an output voltage of 12V, and can meet the power consumption of the vehicle in the dormant state when the vehicle is in the dormant state.
The switch unit 102 is a switch controlled by the signal output by the vehicle controller system 200, and may specifically be a latching relay, a MOS transistor switch, etc., so long as the control by the signal output by the vehicle controller system 200 is ensured, and the embodiment is not limited. In this embodiment, the first signal may be a high-level signal in the digital signal, the second signal may be a low-level signal in the digital signal, the high-level signal controls the latching relay or the MOS transistor switch to be turned on, and the low-level signal controls the latching relay or the MOS transistor switch to be turned off.
After the whole vehicle controller system 200 sends a first signal to act on the switch unit 102, the switch unit 102 is controlled to conduct a power supply loop between the power supply 101 and the whole vehicle controller system 200, after the power supply loop is determined to conduct, the whole vehicle controller system 200 sends a second signal to act on the power supply unit 300, connection between the power supply unit 300 and the whole vehicle controller system 200 is disconnected, the power supply 101 replaces the power supply unit 300 to supply power to the whole vehicle controller system 200, the whole vehicle controller system 200 is not powered off under the condition that the power supply unit 300 stops supplying power to the whole vehicle controller system 200, and then the data acquisition module 103 conducts static current test on the whole vehicle controller system 200.
The data acquisition module 103 is a circuit or device capable of acquiring the static current flowing through the power supply loop, the data acquisition module 103 is connected in series between the switch unit 102 and the whole vehicle controller system 200, when the whole vehicle controller system 200 controls the power supply loop to be conducted, the data acquisition module 103 acquires the static current in the power supply loop, and then the test of the static current flowing through the whole vehicle controller system 200 can be completed, in addition, the data acquisition module 103 is connected with the whole vehicle controller system 200, so that the static current acquired by the data acquisition module 103 can be sent to the whole vehicle controller system 200, the whole vehicle controller system 200 can judge the static current, and whether fault information is reported to a user or not is determined, so that the user can know the state of the vehicle conveniently.
The static current testing device 100 is connected with the whole vehicle controller system 200, and the whole vehicle controller system 200 is also connected with the power supply unit 300; the static current testing device 100 includes a power supply 101, a switch unit 102, and a data acquisition module 103, wherein the switch unit 102 and the data acquisition module 103 are sequentially connected in series between the power supply 101 and the whole vehicle controller system 200, and the whole vehicle controller system 200 is configured to output a first signal to the switch unit 102 and a second signal to the power supply unit 300 when the vehicle is in a sleep state; the switch unit 102 and the power supply unit 300 can be controlled by the vehicle controller system 200.
In addition, the switch unit 102 is configured to respond to the first signal, conduct the power supply loop between the power supply 101 and the vehicle controller system 200, and the power supply unit 300 is configured to respond to the second signal, disconnect the connection with the vehicle controller system 200, so that the data acquisition module 103 can perform a static current test on the vehicle controller system 200 under the condition that the connection with the power supply unit 300 is disconnected and the static current in the power supply loop is not interrupted, maintain the current failure phenomenon of the vehicle controller system 200, perform the static current test on the vehicle controller system 200, reproduce the failure state, prevent multiple repeated power shortage caused by the fact that the connection between the power supply unit 300 and the vehicle controller system 200 is disconnected and the partial failure is not reproduced all the time after the power failure occurs, but the unresolved problem occurs.
In one embodiment, the data acquisition module 103 includes: a current acquisition unit 1031 and a data acquisition unit 1032; the current collection unit 1031 is connected in series between the switch unit 102 and the vehicle controller system 200, and the data collection unit 1032 is connected in parallel to two ends of the current collection unit 1031 and connected to the vehicle controller system 200; the current acquisition unit 1031 is configured to detect a current or a voltage on the power supply loop and upload the current or the voltage to the data acquisition unit 1032; the data acquisition unit 1032 is configured to generate a target current based on the current or the voltage, and upload the target current to the vehicle controller system 200.
In this embodiment, referring to fig. 2, fig. 2 is a schematic diagram illustrating module refinement of a static current testing device according to an embodiment of the present application. As can be seen from fig. 2, the data acquisition module 103 includes a current acquisition unit 1031 and a data acquisition unit 1032, where the current acquisition unit 1031 is connected in series between the switch unit 102 and the vehicle controller system 200, the data acquisition unit 1032 is connected in parallel to two ends of the current acquisition unit 1031 and connected to the vehicle controller system 200, since the current acquisition unit 1031 is configured to detect a voltage or a current on the power supply circuit and upload the current or the voltage to the data acquisition unit 1032, the data acquisition unit 1032 is configured to generate a target current based on the voltage or the voltage, if the current acquisition unit 1031 acquires the voltage on the power supply circuit, the data acquisition unit 1032 can calculate a magnitude of a static current on the power supply circuit, i.e. the target current, according to the voltage and a resistance in the current acquisition unit 1031, and upload the target current to the vehicle controller system 200, and if the target current is greater than the preset static current, it is possible that a fault exists in the vehicle controller system 200, the data acquisition unit 1032 is configured to generate a target current, and if the target current is greater than the preset static current, the target current is possible to send the fault in the vehicle controller system 200 to the vehicle controller system, and the fault may also be the fault controller system to the vehicle controller 200, or the fault controller system is monitored to the vehicle controller system is possible to send the fault information to the vehicle controller 200.
In one embodiment, the current collection unit 1031 includes a current sensor or precision resistor.
In this embodiment, the current collecting unit 1031 includes a current sensor or a precision resistor, if the current collecting unit 1031 is a current sensor, the current collecting unit 1031 may directly collect a static current in a power supply loop and upload the static current to the data collecting unit 1032, and the data collecting unit 1032 may upload the static current as a target current to the vehicle controller system 200, if the current collecting unit 1031 is a precision resistor, the data collecting unit 1032 may collect voltages at two ends of the precision resistor, obtain a voltage difference at two ends of the precision resistor, and may obtain a static current flowing through the precision resistor, i.e., the target current, in combination with a resistance value of the precision resistor itself. The quiescent current in the power supply loop can be obtained directly or through detection by a current sensor or a precision resistor, so that the quiescent current with more accurate precision can be obtained.
In one embodiment, the static current testing device 100 further includes: a diode 104; wherein, the positive pole of the diode 104 is connected with the switch unit 102, and the negative pole of the diode 104 is connected with the data acquisition module 103.
In this embodiment, referring to fig. 2, it can be seen that the static current testing apparatus 100 further includes a diode 104, the anode of the diode 104 is connected to the switch unit 102, the cathode of the diode 104 is connected to the data acquisition module 103, and the diode 104 is connected in series between the switch unit 102 and the data acquisition module 103, so that the power supply unit 300 can be prevented from outputting voltage or current to the power supply 101, and meanwhile, the backward current can be prevented from being too large, and the switch unit 102 can be prevented from being burnt.
In one embodiment, the static current testing device 100 further includes: a fuse 105; wherein the fuse 105 is connected in series between the switch unit 102 and the data acquisition module 103; the fuse 105 is configured to limit a voltage or a current input to the power supply circuit within a preset range.
In this embodiment, the static current testing apparatus 100 further includes a fuse 105, the fuse 105 is connected in series between the switch unit 102 and the data acquisition unit 1032, when the power supply circuit is just started to be turned on, the current output by the power supply 101 may generate a transient current, which far exceeds the static current and may burn electronic components on the power supply circuit, and in order to prevent the data acquisition unit 103 from misjudging that the transient current caused by the power supply 101 is regarded as the static current, the fuse 105 is connected in series between the switch unit 102 and the data acquisition unit 1032, and the fuse 105 may limit the voltage or the current input into the power supply circuit within a preset range. The preset range is a voltage or current range in which the electronic equipment of the power supply loop cannot be burned, and can be set according to withstand voltage parameters and actual requirements of each electronic element in the power supply loop.
In one embodiment, the overall vehicle controller system 200 includes: a central control unit 201 and an in-vehicle wireless terminal 202; one end of the central control unit 201 is connected with the switch unit 102 and the power supply unit 300, the other end of the central control unit 201 is connected with one end of the vehicle-mounted wireless terminal 202, and the other end of the vehicle-mounted wireless terminal 202 is connected with the data acquisition module 103; the vehicle-mounted wireless terminal 202 is configured to detect a state of the vehicle, and send out a wake-up instruction to act on the central control unit 201 when the vehicle is in the sleep state; the central control unit 201 is configured to output the first signal to the switching unit 102 and the second signal to the power supply unit 300 in response to the wake-up instruction.
In the present embodiment, referring to fig. 2, as can be seen from fig. 2, the overall vehicle controller system 200 includes: a central control unit 201 and an in-vehicle wireless terminal 202; one end of the central control unit 201 is connected with the switch unit 102 and the power supply unit 300 respectively, the other end of the central control unit 201 is connected with one end of the vehicle-mounted wireless terminal 202, and the other end of the vehicle-mounted wireless terminal 202 is connected with the data acquisition module 103; as the vehicle-mounted wireless terminal 202 is configured to detect the state of the vehicle and issue a wake-up instruction to act on the central control unit 201 when the vehicle is in the sleep state; because the central control unit 201 is configured to output the first signal to the switch unit 102 and output the second signal to the power supply unit 300 in response to the wake-up instruction, the vehicle can perform self-starting triggering detection on the quiescent current of the vehicle controller system 200, and the quiescent current test on the vehicle in the sleep state is realized, so that the vehicle is prevented from being damaged.
By way of example, a static current testing device 100 according to an embodiment of the present application will be described in detail below with reference to fig. 3:
Fig. 3 is a schematic circuit diagram of a static current testing device according to an embodiment of the present application; referring to fig. 2, as can be seen from fig. 3, the switch unit 102 is a first latching relay 1021, the power supply unit 300 is composed of a vehicle-mounted battery 301 and a second latching relay 302, the current collecting unit 1031 is a current sensor, and the types of the first latching relay 1021 and the second latching relay 302 may be the same, and the circuit configuration in fig. 3 is described in detail below:
Firstly, the static current testing device 100 is connected with the whole vehicle controller system 200, then the whole vehicle controller system 200 is connected with the power supply unit 300, the negative electrode of the vehicle-mounted storage battery 301 in the power supply unit 300 is connected with the whole vehicle controller system 200, the positive electrode of the vehicle-mounted storage battery 301 is connected with the second self-locking relay 302, and the second self-locking relay 302 is also connected with the whole vehicle controller system 200 and the central control unit 201 in the whole vehicle controller system 200.
Secondly, the positive pole of the power supply 101, the first latching relay 1021, the diode 104, the fuse 105 and the current collecting unit 1031 in the static current testing device 100 are sequentially connected in series, the negative pole of the power supply 101 is connected with the negative pole of the vehicle-mounted storage battery 301, the current collecting unit 1031 is connected with the vehicle controller system 200, the data collecting unit 1032 is connected in parallel with two ends of the current collecting unit 1031 and is connected with the vehicle-mounted wireless terminal 202 in the vehicle controller system 200, and the first latching relay 1021 is also connected with the central control unit 201 in the vehicle controller system 200.
The data acquisition unit 1032 is further connected to the power source 101, and the power source 101 supplies power to the data acquisition unit 1032, and if the data acquisition unit 1032 is self-powered by the power source 101, the connection to the power source 101 may not be required.
At this time, the vehicle cloud platform may detect the electric energy drop amount of the storage battery on the vehicle in real time, if the drop amount exceeds the preset threshold drop amount, send a signal to the whole vehicle control to obtain the current state of the vehicle, if the vehicle is in the dormant state, it indicates that there may be a fault in the whole vehicle controller system 200, and it needs to test the quiescent current of the whole vehicle controller system 200 to determine whether the whole vehicle controller system 200 is faulty, so that the whole vehicle controller system 200 outputs a first signal to the first self-locking relay 1021 and outputs a second signal to the first self-locking relay 1021 in the dormant state of the vehicle, where the first signal may be a high level signal in the digital signal, the second signal may be a low level signal in the digital signal, the high level signal controls the self-locking relay to be turned on, and the low level signal controls the self-locking relay to be turned off. Then, the first latching relay 1021 responds to the first signal to conduct a power supply loop between the power supply 101 and the vehicle controller system 200; at the same time, the second latching relay 302 also responds to the second signal to disconnect the vehicle-mounted battery 301 from the vehicle controller system 200, thereby eliminating the fault interference caused by the vehicle-mounted battery 301. Then, the current collecting unit 1031 may collect the static current output to the vehicle controller system 200 by the power supply 101 and upload the static current to the data collecting unit 1032 when the power supply loop is turned on, where the data collecting unit 1032 transfers the static current to the vehicle-mounted wireless terminal 202 of the vehicle controller system 200, and after obtaining the static current, the vehicle-mounted wireless terminal 202 may determine the static current and then perform the next action.
If the quiescent current does not exceed the preset quiescent current threshold value, stopping the quiescent current test of the whole vehicle controller system 200, outputting a first signal to the second latching relay 302 by the whole vehicle controller system 200, controlling the second latching relay 302 to conduct the connection between the vehicle-mounted storage battery 301 and the whole vehicle controller system 200 so as to enable the vehicle-mounted storage battery 301 to supply power to the whole vehicle controller system 200, outputting a second signal to act on the first latching relay 1021 after determining that the vehicle-mounted storage battery 301 supplies power to the whole vehicle controller system 200, controlling the first latching relay 1021 to disconnect a power supply loop between the power supply 101 and the whole vehicle controller system 200, and recovering a state in which the quiescent current test is not performed on the whole vehicle controller system 200.
If the quiescent current exceeds the preset quiescent current threshold, the quiescent current retest can be performed on the whole vehicle controller system 200, that is, the power supply loop between the power supply 101 and the whole vehicle controller system 200 is continuously turned on, so that the current collecting unit 1031 collects quiescent current on the power supply loop for multiple times according to a preset time interval, for example, one quiescent current is collected for five seconds, and the quiescent current is uploaded to the data collecting unit 1032, so that the data collecting unit 1032 can upload the quiescent current to the vehicle-mounted wireless terminal, and the vehicle-mounted wireless terminal can perform the next action conveniently. For example, if the retested static current still exceeds the preset static current threshold value, the information is uploaded to the vehicle cloud platform, and the cloud platform reminds the user of the detection result state through the vehicle terminal, so that the user can conveniently judge whether the factory return detection is needed.
In addition, the static current testing device 100 provided by the embodiment can be used for static current testing of other electronic devices except the whole vehicle controller system 200, and can also be used for static current testing of a plurality of other electronic devices connected with a vehicle, so that the position of a fault point can be conveniently located.
Referring to fig. 4, fig. 4 is a flowchart of steps of a quiescent current testing method according to an embodiment of the present application, which is applied to a quiescent current testing device according to an embodiment of the present application, where the flow of steps of the method includes:
Step S401: based on the amount of power decrease of the power supply unit and the vehicle state, it is determined whether the vehicle enters a sleep state.
In this embodiment, during the running process of the vehicle, the electric energy consumption of the power supply unit is uncontrollable, and related to the habit of the driver and the external vehicle environment, only the electric energy reduction amount of the power supply unit cannot determine whether the vehicle has an out-of-standard fault of the quiescent current, so that the interference of the electric energy consumption of the power supply unit during the use process of the vehicle needs to be eliminated, the current state of the vehicle needs to be determined, and the quiescent current test needs to be performed on the whole vehicle controller system of the vehicle, so that whether the vehicle enters the dormant state needs to be determined based on the electric energy reduction amount of the power supply unit and the vehicle state. Specifically, when the vehicle is in a dormant state, the electric energy reduction amount of the power supply unit exceeds a preset threshold, wherein the preset threshold is the maximum electric energy consumption of the whole vehicle controller system to the power supply unit in unit time when the whole vehicle controller system is in a fault-free condition and the vehicle is in the dormant state.
Step S402: and under the condition that the vehicle is in the dormant state, outputting a first signal to a switch unit through the whole vehicle controller system so as to conduct a power supply loop between a power supply and the whole vehicle controller system.
In this embodiment, if it is determined that the vehicle is in a sleep state and the electric energy drop exceeds a preset threshold, the whole vehicle controller system outputs a first signal to the switch unit, and a power supply loop between the power supply and the whole vehicle controller system is turned on, and the power supply is used to replace the power supply unit to supply power to the whole vehicle controller system, so that interference caused by a fault of the power supply unit is eliminated.
Step S403: outputting a second signal to the power supply unit through the whole vehicle controller system based on the conduction of the power supply loop so as to disconnect the power supply unit from the whole vehicle controller system; and collecting the static current in the power supply loop through the data collection module when the power supply loop is conducted.
In this embodiment, since the power supply loop is already turned on, the whole vehicle controller system outputs the second signal to the power supply unit, the connection between the power supply unit and the whole vehicle controller system is disconnected, the power supply of the whole vehicle controller system can still be maintained, then the static current in the power supply loop is collected through the data collection module under the condition that the whole vehicle controller system is not powered down, the static current test of the whole vehicle controller system is completed, and the accuracy of testing the static current of the whole vehicle controller system is improved.
In one embodiment, after the collecting, by the data collecting module, the quiescent current in the power supply loop when the power supply loop is turned on, the method further includes: outputting a first signal to the power supply unit through the whole vehicle controller system so as to conduct connection between the power supply unit and the whole vehicle controller system; based on the connection between the power supply unit and the whole vehicle controller system, outputting a second signal to the switch unit through the whole vehicle controller system so as to disconnect the power supply loop; and stopping the data acquisition module from acquiring the static current in the power supply loop when the power supply loop is disconnected.
In this embodiment, after the test of the whole vehicle controller system is completed, a state in which the static current test is not performed needs to be recovered, so that a first signal is output to the power supply unit through the whole vehicle controller system to conduct the connection between the power supply unit and the whole vehicle controller system, and then a second signal is output to the switch unit through the whole vehicle controller system based on the connection between the power supply unit and the whole vehicle controller system to disconnect the power supply loop; and stopping the data acquisition module from acquiring the static current in the power supply loop when the power supply loop is disconnected.
In one embodiment, the determining whether the vehicle enters the sleep state based on the amount of power decrease of the power supply unit and the vehicle state includes: acquiring the electric energy descending quantity of the power supply unit in unit time; when the electric energy reduction exceeds a preset threshold value, acquiring data information of the vehicle; wherein the data information includes: the vehicle lock information and the network management message send information; and determining that the vehicle is in a dormant state when the data information indicates that the vehicle is in a vehicle locking state and the network management message is not in a sending state.
In this embodiment, based on the electric energy decrease amount of the power supply unit and the vehicle state, it is determined whether the vehicle enters the sleep state, specifically, by acquiring the electric energy decrease amount of the power supply unit in a unit time, for example, the electric energy decrease amount is 1/10 of the total capacity of the power supply unit in one hour, and exceeds a preset threshold, at this time, data information of the vehicle is acquired again, and it is determined whether the vehicle has a quiescent current exceeding standard in the sleep state, where the data information includes: the vehicle lock information and the network management message send information; when the data information indicates that the vehicle is in a vehicle locking state and the network management message is not in a sending state, it can be determined that the vehicle is in a dormant state because no consumption except the energy consumption of the static current of the power supply unit by the whole vehicle controller system exists on the vehicle.
The embodiment of the application also provides a vehicle, which comprises the static current testing device.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus according to embodiments of the invention. It will be understood that each flowchart and/or block of the flowchart illustrations and/or block diagrams, and combinations of flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
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 embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or terminal device that comprises the element.
The above description of the quiescent current testing device, method and vehicle provided by the present invention applies specific examples to illustrate the principles and embodiments of the present invention, and the above examples are only used to help understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. The static current testing device is characterized by being used for being connected with a whole vehicle controller system, and the whole vehicle controller system is also connected with a power supply unit; the static current testing device comprises a power supply, a switch unit and a data acquisition module, wherein the switch unit and the data acquisition module are sequentially connected in series between the power supply and the whole vehicle controller system; wherein:
the whole vehicle controller system is configured to output a first signal to the switch unit and a second signal to the power supply unit when the vehicle is in a dormant state;
The switch unit is configured to respond to the first signal and conduct a power supply loop between the power supply and the whole vehicle controller system;
The power supply unit is configured to respond to the second signal and disconnect the connection with the whole vehicle control;
The data acquisition module is configured to acquire the static current in the power supply loop when the power supply loop is conducted.
2. The quiescent current testing device of claim 1, wherein the data acquisition module comprises: the current acquisition unit and the data acquisition unit;
The data acquisition unit is connected in parallel with two ends of the current acquisition unit and is connected with the whole vehicle controller system;
the current acquisition unit is configured to detect current or voltage on the power supply loop and upload the current or the voltage to the data acquisition unit;
the data acquisition unit is configured to generate a target current based on the current or the voltage and upload the target current to the vehicle controller system.
3. The quiescent current testing device of claim 2, wherein the current acquisition unit comprises a current sensor or precision resistor.
4. The quiescent current testing device of claim 1, further comprising: a diode; the positive electrode of the diode is connected with the switch unit, and the negative electrode of the diode is connected with the data acquisition module.
5. The quiescent current testing device of claim 1, further comprising: a fuse; the fuse is connected in series between the switch unit and the data acquisition module;
the fuse is configured to limit a voltage or a current input to the power supply loop within a preset range.
6. The quiescent current testing device of claim 1, wherein the vehicle controller system comprises: the central control unit and the vehicle-mounted wireless terminal;
One end of the central control unit is connected with the switch unit and the power supply unit respectively, the other end of the central control unit is connected with one end of the vehicle-mounted wireless terminal, and the other end of the vehicle-mounted wireless terminal is connected with the data acquisition module;
the vehicle-mounted wireless terminal is configured to detect the state of the vehicle and send out a wake-up instruction to act on the central control unit when the vehicle is in the dormant state;
The central control unit is configured to output the first signal to the switching unit and the second signal to the power supply unit in response to the wake-up instruction.
7. A quiescent current testing method, characterized in that it is applied to the quiescent current testing device according to any one of claims 1 to 6, the method comprising:
determining whether the vehicle enters a sleep state based on an amount of electric energy decrease of a power supply unit and a vehicle state;
outputting a first signal to a switch unit through a whole vehicle controller system under the condition that the vehicle is in the dormant state, so as to conduct a power supply loop between a power supply and the whole vehicle controller system;
Outputting a second signal to the power supply unit through the whole vehicle controller system based on the conduction of the power supply loop so as to disconnect the power supply unit from the whole vehicle controller system;
and collecting the static current in the power supply loop through the data collection module when the power supply loop is conducted.
8. The method of claim 7, wherein the data collection module collects the quiescent current in the power supply loop when the power supply loop is on, the method further comprising:
Outputting a first signal to the power supply unit through the whole vehicle controller system so as to conduct connection between the power supply unit and the whole vehicle controller system;
Based on the connection between the power supply unit and the whole vehicle controller system, outputting a second signal to the switch unit through the whole vehicle controller system so as to disconnect the power supply loop;
And stopping the data acquisition module from acquiring the static current in the power supply loop when the power supply loop is disconnected.
9. The quiescent current testing method of claim 7, wherein the determining whether the vehicle enters a sleep state based on an amount of power reduction of a power supply unit and a vehicle state comprises:
Acquiring the electric energy descending quantity of the power supply unit in unit time;
When the electric energy reduction exceeds a preset threshold value, acquiring data information of the vehicle; wherein the data information includes: the vehicle lock information and the network management message send information;
And determining that the vehicle is in a dormant state when the data information indicates that the vehicle is in a vehicle locking state and the network management message is not in a sending state.
10. A vehicle, characterized in that it comprises a static current testing device according to any one of claims 1-6.
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