CN220305406U - Whole car quiescent current test system - Google Patents
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- CN220305406U CN220305406U CN202321800401.6U CN202321800401U CN220305406U CN 220305406 U CN220305406 U CN 220305406U CN 202321800401 U CN202321800401 U CN 202321800401U CN 220305406 U CN220305406 U CN 220305406U
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Abstract
The application provides a whole car quiescent current test system, this system is applied to the vehicle field, and this system includes: the resistance value of the test resistor is adjustable to represent the temperature change of the test environment; the temperature monitor is connected with the test resistor to determine the temperature of the test environment according to the resistance value of the test resistor; the static current testing device is configured to test the static current of the whole vehicle under the condition of temperatures of different testing environments. The system can simulate the temperature of the vehicle in different test environments by adjusting the resistance value of the test resistor, and further can test the whole vehicle quiescent current of the temperature of the different test environments.
Description
Technical Field
The present application relates to the field of vehicles, and more particularly, to a complete vehicle quiescent current test system in the field of vehicles.
Background
Along with the improvement of the intelligence and the electric performance of the vehicle, the number of controllers configured by the vehicle is increased, the logic of the controllers is more and more complex, the static current of the controllers easily causes the problem of power shortage of the vehicle, and the normal running of the vehicle is seriously affected. In the related art, most of the whole vehicle quiescent current tests are performed in a normal temperature environment, a high-low temperature environment cabin is usually used for the whole vehicle quiescent current tests, the cost and time consumption for building the high-low temperature environment cabin are huge, various parameters need to be regulated, sensors in the vehicle are easily affected or damaged in the high-low temperature environment, and the detection result is easily inaccurate.
Disclosure of Invention
The application provides a whole vehicle quiescent current test system, which can simulate the temperature of a vehicle in different test environments under the condition of not entering an environmental cabin test and finish the whole vehicle quiescent current test of the temperature of the different test environments in a short time.
In a first aspect, a system for testing quiescent current of a whole vehicle is provided, the system comprising: the resistance value of the test resistor is adjustable to represent the temperature change of the test environment;
the temperature monitor is connected with the test resistor to determine the temperature of the test environment according to the resistance value of the test resistor;
the static current testing device is configured to test the static current of the whole vehicle under the condition of temperatures of different testing environments.
Through the technical scheme, the resistance change of the test resistor is associated with the temperature change of the test environment, so that the temperature of the vehicle in different test environments can be simulated through the resistance change of the test resistor under the condition that the temperature of the vehicle is not changed, namely at the room temperature, and then the whole vehicle quiescent current under the temperature of different test environments can be rapidly detected under the test condition that an environmental cabin is not needed, and the temperature of the sensor in the vehicle is not influenced or damaged at the room temperature, so that the detection precision and the detection efficiency of the whole vehicle quiescent current can be ensured.
With reference to the first aspect, in some possible implementations, the accuracy of the test resistor is less than or equal to a preset value.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the test resistor is a sliding rheostat.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a resistance value of the test resistor is inversely related to a temperature of the test environment.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the temperature of the test environment is divided into a plurality of temperature intervals, and each temperature interval corresponds to a resistance value range of the test resistor.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, in a case that a resistance value of the test resistor is adjusted to a first resistance value range, the static current testing device is configured to test a static current of the whole vehicle in a first temperature range;
and under the condition that the resistance value of the test resistor is regulated to a second resistance value range, the static current testing device is used for testing the static current of the whole vehicle in a second temperature range, wherein the resistance value of the test resistor in the first resistance value range is smaller than the resistance value of the test resistor in the second resistance value range.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a resistance value of the test resistor is adjusted to the first resistance value range under a condition that the vehicle is powered down and before the vehicle bus is in a dormant state.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a resistance value of the test resistor is adjusted to the first resistance value range when the vehicle is powered down and the vehicle bus is in a dormant state.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a resistance value of the test resistor is adjusted to the second resistance value range under a condition that the vehicle is powered down and before the vehicle bus is in a dormant state.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a resistance value of the test resistor is adjusted to the second resistance value range when the vehicle is powered down and the vehicle bus is in a dormant state.
Drawings
Fig. 1 is a schematic block diagram of a whole vehicle quiescent current test system provided in an embodiment of the present application;
fig. 2 is a schematic diagram of connection between a test resistor and a temperature monitor according to an embodiment of the present application.
Detailed Description
The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
With the development of vehicle intellectualization and electric drive, more and more controllers are provided for the vehicle, the logic of the controllers is more and more complex, the problem of vehicle power shortage caused by overhigh quiescent current of the controllers is easy to occur, the vehicle cannot be started in a power shortage state, and the normal running of the vehicle is seriously influenced.
In the related art, most of the whole vehicle quiescent current tests are performed in a normal temperature environment, the simulation of a vehicle in a high-temperature and low-temperature environment is absent, the detection of the environment temperature is increased by complex software logic in a controller of the vehicle, and corresponding actions or alarms are executed when the vehicle is detected to be in a high-temperature environment or a low-temperature environment, so that the controller possibly cannot enter a sleep state or cannot enter a low-power consumption mode required by design, and the problem of power shortage of the vehicle is caused.
In the related art, the high-low temperature environmental chamber is used for detecting the quiescent current of the whole vehicle in the high-low temperature environment, so that the high-low temperature environmental chamber is established with huge cost, and a large amount of electric energy is consumed for working of the high-low temperature environmental chamber. The high-low temperature environmental chamber test has the advantages of more work and long time consumption, needs to adjust wind speed parameters and temperature curves, also needs to correct drum parameters for different vehicle types, and needs to consume a great deal of time when the temperature of the high-low temperature environmental chamber is switched from extremely high temperature to extremely low temperature. In addition, the actual temperature range that high low temperature environment cabin provided is less, can not cover temperature monitor's temperature monitoring range completely, leads to the whole car quiescent current of detection inaccurate. In the process of controlling the temperature rise or fall of the high-low temperature environmental chamber, the accuracy of the current measurement sensor is reduced, and the current acquisition equipment and other electronic equipment are seriously disturbed or damaged.
Based on this, the embodiment of the application provides a whole vehicle quiescent current test system, which can simulate that a vehicle is in a high-temperature environment or a low-temperature environment under the condition that the vehicle does not need to enter a high-temperature environment cabin, so as to detect the whole vehicle quiescent current expansion under the high-temperature environment and the low-temperature environment.
Implementation details of the technical solutions of the embodiments of the present application are described in detail below.
Fig. 1 is a schematic block diagram of a whole vehicle quiescent current test system provided in an embodiment of the present application.
Exemplary, as shown in fig. 1, the whole vehicle quiescent current test system includes: test resistance, temperature monitor and quiescent current testing device.
The resistance of the test resistor is adjustable to characterize the temperature change of the test environment. In the process of adjusting the resistance of the test resistor, the change of the resistance can indicate the temperature change of the test environment. Here, in one temperature measurement mode, according to the principle that the resistance value of the resistor is associated with the temperature change, the corresponding temperature is determined according to the resistance value of the resistor, so as to achieve the purpose of temperature measurement. The whole-vehicle quiescent current test system in the embodiment adopts the principle, and can simulate the temperatures of different test environments by adjusting the resistance value of the test resistor. In practical applications, the temperature of the test environment may cover a temperature range that can be monitored by the temperature monitor. The high temperature range, the low temperature range, and the normal temperature range refer to a high temperature range, a low temperature range, and a normal temperature range in the vehicle field, and in general, the high temperature range is set to > 35 ℃, the low temperature range is set to 0 ℃, and the normal temperature range is set to 25±5 ℃.
The temperature monitor is connected with the test resistor, and can determine the temperature of the test environment according to the resistance value of the test resistor, so that the temperature of the vehicle in different test environments can be simulated by adjusting the resistance value of the test resistor under the condition that the current temperature of the vehicle is not changed. As shown in fig. 2, fig. 2 shows a schematic diagram of the connection of the test resistor to the temperature monitor. In the normal running process of the vehicle, rather than the static current test scene of the whole vehicle, the temperature monitor is connected with a resistance type temperature sensor, the resistance value of the resistance type temperature sensor can change along with the change of the environmental temperature, and the temperature monitor can periodically measure the resistance value of the resistance type temperature sensor and then determine the corresponding temperature through a series of algorithms. In this embodiment, in order to simulate the temperature of the vehicle in different test environments, the connection between the temperature monitor and the resistance type temperature sensor is disconnected, and then the connection line of the temperature monitor is connected to the test resistor, so that the purpose of simulating the temperature outside the vehicle and inside the cabin is achieved by adjusting the resistance value of the test resistor.
The static current testing device is configured to test the static current of the whole vehicle under the condition of temperatures of different testing environments. The static current refers to weak current still existing in the vehicle electric system when the vehicle stops running. Such currents are typically caused by the electronic device, the holding power supply of the vehicle system, and the electronic memory function. The existence of the static current is normal, but the excessive static current may cause the problems of excessively high consumption of the battery of the vehicle, incapability of starting the vehicle, and the like.
In practical application, the temperature monitor of the vehicle can monitor the temperature of the vehicle and feed back the monitored temperature data to the controller of the vehicle, and the controller can execute corresponding actions or alarm according to the ambient temperature, so that the controller cannot enter a dormant state, or cannot enter a low-power consumption mode after entering the dormant state, and excessive static current is caused. Based on the above, the static current of the whole vehicle under different environmental temperatures needs to be detected, and the static current of the whole vehicle under different environmental temperatures is controlled to fall into a normal range. In this embodiment, by adjusting the resistance value of the test resistor, the vehicle can be simulated to be at different temperatures of the test environments, so that the quiescent current test device can test the quiescent current of the whole vehicle at different temperatures of the test environments.
In practical application, the test accuracy of the static current testing device is affected by temperature, and the test accuracy of the static current testing device is greatly disturbed in a low-temperature or high-temperature environment, but in the embodiment, the vehicle is simulated to be in different temperatures of the test environments by adjusting the resistance value of the test resistor instead of being directly placed in the different temperatures of the test environments, so that the test accuracy of the static current testing device is not affected, and the accuracy of the tested whole vehicle static current can be ensured.
In one embodiment, the precision of the test resistor is less than or equal to a preset value, where the precision of the test resistor refers to a deviation between the measured resistor value and the actual resistor value, where the precision of the test resistor is required to be at a high precision level, that is, the precision of the test resistor is required to be less than or equal to 1%, where the precision of the test resistor is less than or equal to 1% refers to a deviation between the measured resistor value and the actual resistor value being very small and less than or equal to 1%, so that more accurate and stable resistance adjustment can be provided, and consistent resistance adjustment performance can be provided under different environmental conditions, so that the temperature monitor can accurately determine the temperature of the test environment according to the resistance value of the test resistor.
In one embodiment, the test resistor is a sliding resistor, and the effective resistance of the sliding resistor can be changed by moving the sliding node of the sliding resistor, so that the resistance of the sliding resistor can be changed along with the temperature of the test environment.
In one embodiment, the resistance of the test resistor and the temperature of the test environment are in an inverse relation, that is, the temperature of the test environment is increased, and the resistance of the test resistor is correspondingly reduced, so that the resistance of the test resistor can be adjusted according to the inverse relation between the resistance of the test resistor and the temperature of the test environment.
In one embodiment, the temperature of the test environment may be divided into a plurality of temperature intervals, where each temperature interval corresponds to a resistance range of the test resistor. Here, it is indicated that the temperature of the test environment and the resistance value of the test resistor are mutually corresponding, and the resistance value range of the test resistor corresponding to each temperature interval can be recorded through a relational table. As shown in table 1, table 1 is a table of temperature relationship between the resistance range of the test resistor and the test environment.
TABLE 1
| Temperature interval (DEG C) | Lower limit (KΩ) | Nominal value (KΩ) | Upper limit (KΩ) |
| -27℃ | 20.82 | 21.53 | 22.24 |
| -26℃ | 19.78 | 20.45 | 21.12 |
| -25℃ | 18.79 | 19.43 | 20.07 |
| -24℃ | 17.86 | 18.47 | 19.08 |
Taking table 1 as an example, 4 temperature ranges are recorded in table 1, namely-27 ℃, -26 ℃, -25 ℃ and-24 ℃, wherein the resistance value range of the test resistor corresponding to the temperature range-27 ℃ is 20.82-22.24 kΩ, that is, when the static current of the whole vehicle at-27 ℃ needs to be tested, the resistance value of the test resistor needs to be adjusted to 21.53kΩ, and the resistance value of the test resistor can also be adjusted to fall into the range of 20.82-22.24 kΩ within the allowable error range.
In one embodiment, the resistance of the test resistor can be adjusted to a first resistance range, and the vehicle can be simulated to be in a first temperature range under the condition that the resistance of the test resistor is adjusted to the first resistance range, so that the quiescent current testing device can test the quiescent current of the whole vehicle in the first temperature range. The first temperature range may be a high temperature range (i.e. the temperature is greater than 35 ℃), and the resistance range of the test resistor corresponding to the temperature range in which the first temperature range is located is the first resistance range. Specifically, under the condition that the whole vehicle quiescent current of the vehicle is required to be tested in a high-temperature environment, the resistance value of the test resistor is regulated to a first resistance value range, and the temperature monitor can determine that the vehicle is currently in the high-temperature environment according to the resistance value of the test resistor, so that the vehicle is simulated to be in the high-temperature environment through the resistance value of the test resistor, and the quiescent current testing device can test the whole vehicle quiescent current in the high-temperature environment.
In practical application, the resistance value of the test resistor can be adjusted to a second resistance value range, and the vehicle can be simulated to be in a second temperature range under the condition that the resistance value of the test resistor is adjusted to the second resistance value range, so that the quiescent current testing device can test the quiescent current of the whole vehicle in the second temperature range. Here, the second temperature range may be a low temperature range (i.e., temperature < 0 ℃), and for example, the temperature range described in table 1 may be determined as the second temperature range, the resistance value range described in table 1 may be determined as the second resistance value range, and the resistance value range of the test resistor corresponding to the temperature range in which the second temperature range is located is the second resistance value range. Specifically, under the condition that the whole vehicle quiescent current of the vehicle is required to be tested in a low-temperature environment, the resistance value of the test resistor is regulated to a second resistance value range, and the temperature controller can determine that the vehicle is currently in the low-temperature environment according to the resistance value of the test resistor, so that the vehicle is simulated to be in the low-temperature environment through the resistance value of the test resistor, and the quiescent current testing device can test the whole vehicle quiescent current in the low-temperature environment.
It should be noted that, the resistance of the test resistor and the temperature of the test environment are in an inverse relation, so that the resistance of the first resistance range of the first test resistor is smaller than the resistance of the second resistance range of the test resistor.
In one embodiment, the resistance value of the test resistor is adjusted to a first resistance range under the condition that the vehicle is powered down and the vehicle bus is in a dormant state, namely simulating that the vehicle is in a high-temperature environment before the vehicle is powered down and the vehicle bus is in a dormant state.
In practical application, after the vehicle owner finishes using the vehicle, the power supply mode is adjusted to be in a closed state, and before the bus of the vehicle is in a sleep state, the vehicle is in a high-temperature environment, so that the vehicle sends out a high-temperature alarm or executes corresponding processing, after the execution is finished, the controller cannot enter the sleep state or enter a low-power consumption mode with design requirements after entering the sleep state, and the phenomenon of power shortage of the vehicle or the rapid reduction of the battery capacity of the vehicle is caused.
Based on this, in the present embodiment, a test scenario of the quiescent current of the whole vehicle is set. In the whole vehicle quiescent current testing process, the resistance value of the testing resistor is adjusted to a first resistance range before the vehicle is powered down and the vehicle bus is in a sleep state, so that the situation that the vehicle is in a high-temperature environment before the vehicle is powered down and the vehicle bus is in the sleep state can be simulated, a high-temperature alarm is sent out or corresponding processing is executed by the vehicle, the whole vehicle quiescent current in the high-temperature environment is tested through the quiescent current testing device, and the problem of power shortage of the vehicle in the high-temperature environment can be solved.
In one embodiment, the resistance value of the test resistor is adjusted to a first resistance range under the condition that the vehicle is powered down and the vehicle bus is in a dormant state, namely, the temperature is gradually increased after the vehicle is simulated to be powered down and the vehicle bus is in the dormant state, so that the vehicle is in a high-temperature environment.
In practical application, after the vehicle is powered down and the vehicle bus is in a sleep state, the temperature is gradually increased, so that the vehicle is in a high-temperature environment, the vehicle is caused to send out a high-temperature alarm or execute corresponding processing, after the execution is finished, the controller cannot enter the sleep state or enter a low-power consumption mode with design requirements after entering the sleep state, and the phenomenon of power shortage of the vehicle or the rapid reduction of the battery power of the vehicle is caused.
Based on this, in the present embodiment, a test scenario of the quiescent current of the whole vehicle is set. In the whole vehicle quiescent current testing process, after the vehicle is powered down and the vehicle bus is in a sleep state, the resistance value of the testing resistor is regulated to a first resistance value range, so that the temperature of the vehicle can be simulated to gradually rise and enter a high-temperature environment after the vehicle is powered down and the vehicle bus is in the sleep state, at the moment, the vehicle can give out a high-temperature alarm or execute corresponding processing, and the whole vehicle quiescent current under the high-temperature environment is tested through the quiescent current testing device, so that the problem of power shortage of the vehicle under the high-temperature environment can be solved.
In one embodiment, the resistance value of the test resistor is adjusted to a second resistance range under the condition that the vehicle is powered down and the vehicle bus is in a dormant state, namely, the vehicle is in a low-temperature environment under the condition that the vehicle is simulated to be powered down and the vehicle bus is in the dormant state.
In practical application, after the vehicle owner finishes using the vehicle, the power supply mode is adjusted to be in a closed state, before the vehicle bus is in a sleep state, the vehicle is in a low-temperature environment, so that the vehicle sends out a low-temperature alarm or executes corresponding processing, after the execution is finished, the controller cannot enter the sleep state or enter the low-power consumption mode required by design after entering the sleep state, and the phenomenon of power shortage of the vehicle or the rapid reduction of the battery capacity of the vehicle is caused.
Based on this, in the present embodiment, a test scenario of the quiescent current of the whole vehicle is set. In the whole vehicle quiescent current testing process, before the vehicle is powered down and the vehicle bus is in a sleep state, the resistance value of the testing resistor is adjusted to a second resistance value range, so that the situation that the vehicle is in a low-temperature environment before the vehicle is powered down and the vehicle bus is in the sleep state can be simulated, at the moment, the vehicle can give out a low-temperature alarm or execute corresponding processing, the whole vehicle quiescent current under the low-temperature environment is tested through the quiescent current testing device, and the problem of power shortage of the vehicle under the low-temperature environment can be solved.
In one embodiment, the resistance of the test resistor is adjusted to a second resistance range under the condition that the vehicle is powered down and the vehicle bus is in a dormant state, that is, the temperature is gradually reduced after the vehicle is simulated to be powered down and the vehicle bus is in the dormant state, so that the vehicle is in a low-temperature environment.
In practical application, after the vehicle owner finishes using the vehicle, the power supply mode is adjusted to be in a closed state, after the vehicle bus is in a sleep state, the temperature is gradually reduced, so that the vehicle sends out a low-temperature alarm or executes corresponding processing, after the execution is finished, the controller cannot enter the sleep state or enter the low-power consumption mode required by design after entering the sleep state, and the phenomenon of power shortage of the vehicle or the rapid reduction of the battery capacity of the vehicle is caused.
Based on this, in this embodiment, a test scenario of the whole vehicle quiescent current is set, and in the process of testing the whole vehicle quiescent current, after the vehicle is powered down and the vehicle bus is in a sleep state, the resistance value of the test resistor is adjusted to a second resistance value range, so that the situation that the vehicle enters a low-temperature environment after the vehicle is powered down and the vehicle bus is in the sleep state can be simulated, the temperature is gradually reduced, at this moment, the vehicle can send out a low-temperature alarm or execute corresponding processing, and then the whole vehicle quiescent current under the low-temperature environment is detected through the quiescent current testing device, so that the problem of power shortage of the vehicle under the low-temperature environment can be processed.
The working scenario of the whole vehicle quiescent current test system is described in detail below.
First working scenario: the whole vehicle quiescent current testing system tests the whole vehicle quiescent current under the high-temperature environment.
The temperature of the test environment is in a high temperature range, and the temperature T of the test environment to be tested is determined 1 DEG C, wherein T 1 The temperature may be 40℃or 50 ℃. Determining the temperature T of the test environment according to a relation table of the resistance value of the test resistor and the temperature of the test environment 1 Resistance value range R corresponding to DEG C 1 Will measureThe resistance value of the test resistor is adjusted to the temperature T of the test environment 1 The temperature monitor can determine the temperature T of the vehicle in the test environment according to the resistance value of the test resistor in the resistance value range R corresponding to the temperature 1 The static current testing device can be used for testing the temperature T of the environment 1 Under the condition of the temperature of the whole vehicle, the static current of the whole vehicle is tested, so that the static current testing device can test the static current of the whole vehicle of the vehicle in a high-temperature environment.
The second working scenario: the whole vehicle quiescent current testing system tests the whole vehicle quiescent current under a low-temperature environment.
The temperature of the test environment is in a low temperature range, and the T of the test environment to be tested is determined 2 C, wherein T 2 The temperature may be-10deg.C or-20deg.C. Determining the temperature T of the test environment according to a relation table of the resistance value of the test resistor and the temperature of the test environment 2 Resistance value range R corresponding to DEG C 2 The resistance value of the test resistor is regulated to the temperature T of the test environment 2 Resistance value range R corresponding to DEG C 2 The temperature monitor can determine the temperature T of the vehicle in the test environment according to the resistance value of the test resistor 2 The static current testing device can be used for testing the temperature T of the environment 2 Under the condition of the temperature of the whole vehicle, the static current of the whole vehicle is tested, so that the static current testing device can test the static current of the whole vehicle of the vehicle in a low-temperature environment.
Third working scenario: the whole vehicle quiescent current test system tests the whole vehicle quiescent current under the normal temperature environment.
The temperature of the test environment is in the normal temperature range, and the T of the test environment to be tested is determined 3 C, wherein T 3 The temperature may be 25℃or 26 ℃. Determining the temperature T of the test environment according to a relation table of the resistance value of the test resistor and the temperature of the test environment 3 Resistance value range R corresponding to DEG C 3 The resistance value of the test resistor is regulated to the temperature T of the test environment 3 Resistance value range R corresponding to DEG C 3 The temperature monitor can determine the temperature T of the vehicle in the test environment according to the resistance value of the test resistor 3 The static current testing device can test the temperature of the environmentDegree T 3 Under the condition of the temperature of the whole vehicle, the static current of the whole vehicle is tested, so that the static current testing device can test the static current of the whole vehicle of the vehicle in a normal temperature environment.
In sum, the whole vehicle quiescent current testing system can simulate the temperature of the vehicle in different testing environments by adjusting the resistance value of the testing resistor, so that the whole vehicle quiescent current of the vehicle in different testing environments can be tested.
It will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a whole car quiescent current test system which characterized in that includes:
the resistance value of the test resistor is adjustable to represent the temperature change of the test environment;
the temperature monitor is connected with the test resistor to determine the temperature of the test environment according to the resistance value of the test resistor;
the static current testing device is configured to test the static current of the whole vehicle under the condition of temperatures of different testing environments.
2. The vehicle quiescent current test system of claim 1, wherein the accuracy of the test resistor is less than or equal to a preset value.
3. The vehicle quiescent current test system of claim 1, wherein the test resistor is a slide rheostat.
4. A vehicle quiescent current testing system according to any of claims 1-3, wherein the resistance of the test resistor is inversely related to the temperature of the test environment.
5. The system according to claim 4, wherein the temperature of the test environment is divided into a plurality of temperature intervals, and each temperature interval corresponds to a resistance range of the test resistor.
6. The vehicle quiescent current test system according to claim 5, wherein,
the static current testing device is used for testing the static current of the whole vehicle in a first temperature range under the condition that the resistance value of the testing resistor is regulated to a first resistance value range;
and under the condition that the resistance value of the test resistor is regulated to a second resistance value range, the static current testing device is used for testing the static current of the whole vehicle in a second temperature range, wherein the resistance value of the test resistor in the first resistance value range is smaller than the resistance value of the test resistor in the second resistance value range.
7. The vehicle quiescent current testing system of claim 6, wherein the resistance of the test resistor is adjusted to the first resistance range when the vehicle is powered down and the vehicle bus is in a pre-sleep state.
8. The vehicle quiescent current testing system of claim 6, wherein the resistance of the test resistor is adjusted to the first resistance range when the vehicle is powered down and the vehicle bus is in a dormant state.
9. The vehicle quiescent current testing system of claim 6, wherein the resistance of the test resistor is adjusted to the second resistance range when the vehicle is powered down and the vehicle bus is in a pre-sleep state.
10. The vehicle quiescent current testing system of claim 6, wherein the resistance of the test resistor is adjusted to the second resistance range when the vehicle is powered down and the vehicle bus is in a dormant state.
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| CN202321800401.6U CN220305406U (en) | 2023-07-10 | 2023-07-10 | Whole car quiescent current test system |
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| CN202321800401.6U CN220305406U (en) | 2023-07-10 | 2023-07-10 | Whole car quiescent current test system |
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2023
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