Whole vehicle dark current measurement method and device and computer readable storage medium

Abstract

The embodiment of the invention relates to the technical field of vehicles, and discloses a whole vehicle dark current measurement method and device and a computer readable storage medium, and the method comprises the steps: obtaining the first frame message discharge amount and first frame message time after the whole vehicle is awakened each time, and the last frame message discharge amount and last frame message time after the whole vehicle is dormant each time; under the condition that the discharge capacity of the first frame message is smaller than the discharge capacity of the last frame message, determining a first dark current according to the discharge capacity of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time. According to the technical scheme of the invention, the method can accurately measure the dark current of the whole vehicle under different conditions, thereby effectively improving the measurement accuracy of the dark current of the whole vehicle.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of vehicle technology, and specifically to a method and device for measuring dark current of a whole vehicle, and a computer-readable storage medium. Background Art

[0002] Vehicle dark current, also known as static current, refers to the current that still exists when the car is turned off. Although this current is very small, it will cause damage to the battery over a long period of time, affecting its performance and life. The main causes of dark current include vehicle circuit design, standby power consumption of electronic equipment, improper human operation, etc. Its impact on the battery is mainly manifested in accelerated self-discharge, affecting starting performance, increasing maintenance costs, and possible safety hazards.

[0003] The existing method for measuring the dark current of the whole vehicle usually obtains the dark current of the whole vehicle by subtracting the discharge amount before the current sleep state from the discharge amount after each wake-up. The dark current of the whole vehicle under different conditions is not considered, which makes it difficult to accurately measure the dark current of the whole vehicle. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a method, device and computer-readable storage medium for measuring the dark current of a whole vehicle, which are used to solve the technical problem that the dark current of the whole vehicle under different situations is not taken into account in the prior art, resulting in difficulty in accurately measuring the dark current of the whole vehicle.

[0005] According to one aspect of an embodiment of the present invention, a method for measuring dark current of a vehicle is provided, the method comprising:

[0006] Obtain the discharge amount and time of the first frame message after each vehicle wake-up, as well as the discharge amount and time of the last frame message after each vehicle sleep;

[0007] When the discharge amount of the first frame message is less than the discharge amount of the last frame message, a first dark current is determined according to the discharge amount of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0008] According to another aspect of an embodiment of the present invention, a whole vehicle dark current measurement device is provided, the device comprising:

[0009] The message data acquisition module is used to obtain the first frame message discharge amount and the first frame message time after each vehicle wake-up, and the last frame message discharge amount and the last frame message time after each vehicle sleep;

[0010] The first dark current determination module is used to determine the first dark current according to the discharge amount of the last frame message, the preset dark current and the time difference when the discharge amount of the first frame message is less than the discharge amount of the last frame message; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0011] In an optional manner, the vehicle dark current measurement device further includes a second dark current determination module, which is used to:

[0012] When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount;

[0013] A second dark current is determined according to the sleep discharge amount and the sleep time.

[0014] In an optional manner, a preset dark current determination module is further included, which is used to: determine the second dark current as the preset dark current.

[0015] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount include:

[0016] When the wake-up times is 1, the difference between the first frame message time and the last frame message time is determined as the first sleep time, and the difference between the first frame message discharge amount and the last frame message discharge amount is used as the first sleep discharge amount.

[0017] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount, further includes:

[0018] When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep;

[0019] Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time;

[0020] The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

[0021] In an optional manner, the first dark current determination module is further used for:

[0022] The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

[0023] In an optional manner, the first dark current determination module is further used for:

[0024] When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle;

[0025] When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is used as the dark current of the current sleep cycle;

[0026] The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

[0027] According to another aspect of an embodiment of the present invention, a whole vehicle dark current measurement device is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus;

[0028] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations such as the above-mentioned whole vehicle dark current measurement method.

[0029] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the storage medium stores at least one executable instruction, and when the executable instruction is executed on a vehicle dark current measurement device / apparatus, the vehicle dark current measurement device / apparatus performs the operation of the vehicle dark current measurement method as described above.

[0030] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0031] Furthermore, when the number of vehicle wake-up times is greater than 1, the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the beginning of sleep to the current wake-up.

[0032] The above description is only an overview of the technical solution of the embodiment of the present invention. In order to more clearly understand the technical means of the embodiment of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of a process flow of a vehicle dark current measurement method provided by an embodiment of the present invention is shown;

[0035] Figure 2 Another schematic diagram of the process of measuring dark current of a whole vehicle provided by an embodiment of the present invention is shown;

[0036] Figure 3 A schematic structural diagram of a dark current measuring device for a vehicle provided by an embodiment of the present invention is shown;

[0037] Figure 4 The schematic diagram of the structure of the whole vehicle dark current measurement device provided by the present invention is shown. DETAILED DESCRIPTION

[0038] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0039] Figure 1 FIG. 1 is a flow chart of a vehicle dark current measurement method provided by an embodiment of the present invention, and the method is performed by a vehicle dark current measurement device. Figure 1 As shown, the method comprises the following steps:

[0040] Step 110: Obtain the discharge amount Q of the first frame message after each vehicle wake-up N and first frame message time T N , and the last frame message discharge Q after each vehicle sleep N-1 and the last frame message time Q N-1;

[0041] Among them, the wake-up state of the whole vehicle can be monitored during the whole vehicle power-off cycle, and the relevant power information and time information after the whole vehicle wakes up and sleeps can be obtained by recording the time of each wake-up and each sleep. Before obtaining the discharge amount and the first frame message time of the first frame message after each wake-up of the whole vehicle, the vehicle power gear status information is obtained to determine that the current power state is OFF gear. In an embodiment of the present invention, the whole vehicle sleep cycle can be n times, where n is a positive integer greater than or equal to 1, and the time from the last frame message after the whole vehicle sleeps to the first frame message time after the whole vehicle wakes up is a whole vehicle sleep cycle.

[0042] In an embodiment of the present invention, the corresponding message discharge amount and message time are determined through the message sent when the whole vehicle is asleep or awakened, and the message sending time can be accurately obtained based on the timestamp in the message information, and the power information at the moment of message sending can be accurately obtained from the message information, so that the time information and power information of different states can be accurately obtained, thereby effectively improving the accuracy of dark current measurement.

[0043] Step 120: When the discharge amount of the first frame message is less than the discharge amount of the last frame message, determine a first dark current according to the discharge amount of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0044] Among them, normally in a vehicle sleep cycle, since the vehicle enters a sleep state from a working state, dark current will be generated, and the discharge amount of the first frame message after the vehicle wakes up is greater than or equal to the discharge amount of the last frame message after the vehicle sleeps. However, when the vehicle battery is abnormal or power is cut off, the discharge amount of the first frame message after the vehicle wakes up is less than the discharge amount of the last frame message after the vehicle sleeps, and less than the discharge amount of the last frame message.

[0045] In the embodiment of the present invention, when the discharge amount of the first frame message after the vehicle wakes up is less than the discharge amount of the last frame message, it can be determined that the current vehicle battery is abnormal or powered off, and the current breakpoint is recorded at this time, and each breakpoint is accumulated to obtain the dark current of this sleep cycle. During the sleep cycle, it is verified whether the discharge amount of the last frame message when the vehicle is in sleep is valid. If it is valid, the dark current of the current sleep cycle can be further calculated based on the discharge amount of the last frame message.

[0046] In an embodiment of the present invention, the preset dark current can be a dark current determined based on the previous sleep cycle of the entire vehicle. By adding the dark current to the dark current of the current sleep cycle calculated in this embodiment, a first dark current can be obtained. The first dark current is the current dark current of the entire vehicle.

[0047] In the embodiment of the present invention, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, which can be:

[0048]

[0049] I1=I 当前 +I 预设

[0050] Among them, I 当前 is the current dark current of the vehicle, C0 is the total battery capacity, SOC SN-1 is the percentage of power discharged by the last frame message, T N is the first frame message time, T N-1 It is the last frame message time.

[0051] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0052] In an optional manner, step S120 further includes:

[0053] When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, the sleep time is determined according to the first frame message time and the last frame message time, and the sleep discharge amount is determined according to the first frame message discharge amount and the last frame message discharge amount;

[0054] A second dark current is determined according to the sleep discharge amount and the sleep time.

[0055] In an embodiment of the present invention, when the discharge amount of the first frame message is greater than or equal to the discharge amount of the last frame message in a vehicle sleep cycle, the dark current is the average value of the discharge amount relative to the sleep time. The embodiment of the present invention determines the sleep discharge amount and sleep time in this vehicle sleep cycle, thereby further determining the second dark current, wherein the second dark current is the dark current from the start of sleep to wake-up of the vehicle.

[0056] In the embodiment of the present invention, when the discharge amount of the first frame message is greater than or equal to the discharge amount of the last frame message, the difference between the discharge amounts of the first and last frame messages can more accurately reflect the actual power consumption, and the sleep discharge amount can be accurately determined using the discharge amount of the first frame message and the discharge amount of the last frame message. This can effectively simplify the dark current measurement process while ensuring accurate measurement of the dark current, thereby effectively improving the dark current measurement efficiency.

[0057] In an optional manner, after the second dark current is determined according to the sleep discharge amount and the sleep time, the second dark current is determined as the preset dark current.

[0058] In an embodiment of the present invention, the second dark current is the dark current of the whole vehicle calculated when the discharge amount of the first frame message is greater than or equal to the discharge amount of the last frame message. The embodiment of the present invention uses the dark current calculated in this case as the preset dark current. When the discharge amount of the first frame message is less than the discharge amount of the last frame message during the subsequent sleep period of the whole vehicle, the dark current of the whole vehicle under different circumstances can be accurately calculated in combination with the second dark current, thereby effectively improving the accuracy of the dark current measurement of the whole vehicle.

[0059] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount include:

[0060] When the wake-up times is 1, the difference between the first frame message time and the last frame message time is determined as the first sleep time, and the difference between the first frame message discharge amount and the last frame message discharge amount is used as the first sleep discharge amount.

[0061] When the wake-up number is 1, the calculation formula of the second dark current is as follows:

[0062]

[0063] In an embodiment of the present invention, when the number of wake-up times is 1, the first sleep time in the sleep cycle is determined according to the discharge time of the first frame message and the last frame message time of the current sleep cycle of the whole vehicle, and the first sleep discharge amount in the sleep cycle is determined according to the discharge amount of the first frame message and the discharge amount of the last frame message, so that the dark current of the whole vehicle when the number of wake-up times is 1 can be obtained quickly and accurately.

[0064] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount, further includes:

[0065] When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep;

[0066] Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time;

[0067] The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

[0068] When the wake-up times are greater than 1, the calculation formula of the second dark current is as follows:

[0069]

[0070] Among them, I2 is the second dark current, Q so is the discharge amount of the last frame message during the first sleep period, T so The last frame message time during the first sleep period. The total wake-up time.

[0071] In an embodiment of the present invention, when the number of vehicle wake-up times is greater than 1, the vehicle has multiple sleep cycles, and the entire time period from the start of sleep to the final wake-up of the vehicle can be determined as the overall time. The total wake-up time in the overall time period includes multiple wake-up cycles, where each wake-up cycle can be determined by the difference between the last frame message time and the last first frame message time. Please refer to Table 1, which is a functional motion record data table, where the start time is the last first frame message time, the end time is the last frame message time, and the time difference between the two is a wake-up cycle.

[0072] Table 1 Function operation record data table

[0073] Function Opening time End time Time difference Feature 1 <![CDATA[T1]]> <![CDATA[T S1 ]]> <![CDATA[=T S1 -T1]]> Feature 2 <![CDATA[T2]]> <![CDATA[T S2 ]]> <![CDATA[=T S2 -T2]]> Feature 3 <![CDATA[T N-1 ]]> <![CDATA[T SN-1 ]]> <![CDATA[=T SN1 -T N-1 ]]>

[0074] The embodiment of the present invention determines the second sleep time, that is, the total sleep time within the vehicle time, by the difference between the overall time and the total wake-up time within the overall time, and the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the start of sleep to the current wake-up.

[0075] In an optional manner, before determining the first dark current, the method further includes:

[0076] The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

[0077] In the embodiment of the present invention, the total battery capacity is determined, and after obtaining the last frame message discharge amount, the ratio of the last frame message discharge amount to the total battery capacity is used as the power percentage of the last frame message discharge amount. Considering the attenuation of the total battery capacity due to the use time, the number of cycles and the depth of power loss, the power percentage will not reach 100%.

[0078] If the power percentage of the last frame message discharge does not meet the preset accuracy requirements, the power percentage of the previous frame message discharge is taken to re-judge whether it meets the preset accuracy requirements until a valid message discharge is determined and used for subsequent dark current calculations, thereby ensuring the accuracy and reliability of the first dark current measurement.

[0079] In an optional manner, step 120 further includes:

[0080] The step of determining the first dark current according to the discharge amount of the last frame message, the preset dark current and the time difference comprises:

[0081] When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle;

[0082]

[0083] In an embodiment of the present invention, the first preset discharge capacity may be a proportional value of the total power range. For example, the power range is 0-10000, the first preset total power range may be 9 / 10 of the total power range, 10 / 11 of the total power range, etc., and the second preset discharge capacity may be 80, 100, 120, etc.

[0084] In the embodiment of the present invention, when the discharge amount of the last frame message is greater than the first preset discharge amount, it is determined that the discharge amount of the last frame message is close to the maximum discharge range. At this time, the discharge amount of the first frame message after the whole vehicle is awakened next time is less than the preset value, which means that the discharge amount of this first frame message has exceeded the maximum discharge range, and the discharge amount is re-measured starting from 0. Therefore, the embodiment of the present invention can accurately determine the total discharge amount according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range.

[0085] When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is taken as the dark current of the current sleep cycle:

[0086]

[0087] The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

[0088] In the embodiment of the present invention, the calculation formula of the first dark current may be:

[0089] I1=I 当前 +I 预设 .

[0090] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, the dark current of the current sleep cycle is determined, and the first dark current is obtained by accumulating it with the preset dark current, that is, the integrated dark current from the beginning of sleep to the last awakening of the whole vehicle. The factors affecting the dark current of the whole vehicle in various situations are comprehensively considered, so that the dark current of the whole vehicle in various situations can be accurately determined, and the dark current measurement requirements of the whole vehicle in different situations can be met.

[0091] See also Figure 2 , is another schematic diagram of a process for measuring dark current of a whole vehicle provided by an embodiment of the present invention.

[0092] The implementation of the embodiments of the present invention has the following beneficial effects:

[0093] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0094] Furthermore, when the number of vehicle wake-up times is greater than 1, the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the beginning of sleep to the current wake-up.

[0095] Figure 3 FIG. 2 shows a schematic diagram of the structure of an embodiment of the vehicle dark current measurement device of the present invention. Figure 3 As shown, the device 300 includes: a message data acquisition module 310 and a first dark current determination module, wherein:

[0096] The message data acquisition module 310 is used to obtain the first frame message discharge amount and the first frame message time after each vehicle wake-up, and the last frame message discharge amount and the last frame message time after each vehicle sleep;

[0097] The first dark current determination module 320 is used to determine the first dark current according to the discharge amount of the last frame message, the preset dark current and the time difference when the discharge amount of the first frame message is less than the discharge amount of the last frame message; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0098] In an optional manner, the vehicle dark current measurement device further includes a second dark current determination module, which is used to:

[0099] When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount;

[0100] A second dark current is determined according to the sleep discharge amount and the sleep time.

[0101] In an optional manner, a preset dark current determination module is further included, which is used to: determine the second dark current as the preset dark current.

[0102] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount include:

[0103] When the wake-up times is 1, the difference between the first frame message time and the last frame message time is determined as the first sleep time, and the difference between the first frame message discharge amount and the last frame message discharge amount is used as the first sleep discharge amount.

[0104] In an optional manner, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount, further includes:

[0105] When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep;

[0106] Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time;

[0107] The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

[0108] In an optional manner, the first dark current determination module 320 is further configured to:

[0109] The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

[0110] In an optional manner, the first dark current determination module 320 is further configured to:

[0111] When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle;

[0112] When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is used as the dark current of the current sleep cycle;

[0113] The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

[0114] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0115] Furthermore, when the number of vehicle wake-up times is greater than 1, the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the beginning of sleep to the current wake-up.

[0116] Figure 4 A schematic structural diagram of an embodiment of a whole vehicle dark current measurement device of the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the whole vehicle dark current measurement device.

[0117] like Figure 4 As shown, the whole vehicle dark current measurement device may include: a processor (processor) 402, a communication interface (Communications Interface) 404, a memory (memory) 406, and a communication bus 408.

[0118] Wherein: the processor 402, the communication interface 404, and the memory 406 communicate with each other through the communication bus 408. The communication interface 404 is used to communicate with other devices such as a client or other server network elements. The processor 402 is used to execute the program 410, which can specifically execute the relevant steps in the above-mentioned embodiment of the dark current measurement method for the whole vehicle.

[0119] Specifically, the program 410 may include program code including computer executable instructions.

[0120] The processor 402 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiment of the present invention. The one or more processors included in the vehicle dark current measurement device may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0121] The memory 406 is used to store the program 410. The memory 406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0122] Program 410 can be specifically called by processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0123] Obtain the discharge amount and time of the first frame message after each vehicle wake-up, as well as the discharge amount and time of the last frame message after each vehicle sleep;

[0124] When the discharge amount of the first frame message is less than the discharge amount of the last frame message, a first dark current is determined according to the discharge amount of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0125] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0126] When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount;

[0127] A second dark current is determined according to the sleep discharge amount and the sleep time.

[0128] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0129] After determining a second dark current according to the sleep discharge amount and the sleep time, the second dark current is determined as the preset dark current.

[0130] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0131] When the wake-up times is 1, the difference between the first frame message time and the last frame message time is determined as the first sleep time, and the difference between the first frame message discharge amount and the last frame message discharge amount is used as the first sleep discharge amount.

[0132] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0133] When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep;

[0134] Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time;

[0135] The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

[0136] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0137] The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

[0138] In an optional manner, the program 410 may be specifically called by the processor 402 to enable the vehicle dark current measurement device to perform the following operations:

[0139] When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle;

[0140] When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is used as the dark current of the current sleep cycle;

[0141] The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

[0142] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0143] Furthermore, when the number of vehicle wake-up times is greater than 1, the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the beginning of sleep to the current wake-up.

[0144] An embodiment of the present invention provides a computer-readable storage medium, which stores at least one executable instruction. When the executable instruction is run on a whole vehicle dark current measurement device / apparatus, the whole vehicle dark current measurement device / apparatus executes the whole vehicle dark current measurement method in any of the above-mentioned method embodiments.

[0145] The executable instructions can be used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0146] Obtain the discharge amount and time of the first frame message after each vehicle wake-up, as well as the discharge amount and time of the last frame message after each vehicle sleep;

[0147] When the discharge amount of the first frame message is less than the discharge amount of the last frame message, a first dark current is determined according to the discharge amount of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time.

[0148] In an optional manner, the executable instruction may be specifically used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0149] When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount;

[0150] A second dark current is determined according to the sleep discharge amount and the sleep time.

[0151] In an optional manner, the executable instruction may be specifically used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0152] After determining a second dark current according to the sleep discharge amount and the sleep time, the second dark current is determined as the preset dark current.

[0153] In an optional manner, the executable instruction may be specifically used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0154] When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep;

[0155] Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time;

[0156] The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

[0157] In an optional manner, the executable instruction may be specifically used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0158] The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

[0159] In an optional manner, the executable instruction may be specifically used to enable the vehicle dark current measurement device / apparatus to perform the following operations:

[0160] When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle;

[0161] When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is used as the dark current of the current sleep cycle;

[0162] The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

[0163] In the embodiment of the present invention, when the discharge amount of the first frame message is less than the discharge amount of the last frame message, that is, when the battery of the entire vehicle is abnormal or powered off, the first dark current is determined according to the discharge amount of the last frame message, the preset dark current and the time difference, taking into account the dark current of the entire vehicle under different circumstances, thereby effectively improving the accuracy of the dark current measurement of the entire vehicle.

[0164] Furthermore, when the number of vehicle wake-up times is greater than 1, the embodiment of the present invention determines the difference between the discharge amount of the first frame message after the last vehicle wake-up and the discharge amount of the last frame message after the first vehicle sleep as the second sleep discharge amount, thereby being able to accurately determine the corresponding sleep time and sleep discharge amount when the number of wake-up times is greater than 1, and further determine the dark current of the vehicle from the beginning of sleep to the current wake-up.

[0165] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system or other device. In addition, the embodiments of the present invention are not directed to any particular programming language.

[0166] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. Similarly, in order to simplify the present invention and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Wherein, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present invention.

[0167] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive.

[0168] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A method for measuring dark current of a whole vehicle, characterized in that: include: Obtain the discharge amount and time of the first frame message after each vehicle wake-up, as well as the discharge amount and time of the last frame message after each vehicle sleep; When the discharge amount of the first frame message is less than the discharge amount of the last frame message, a first dark current is determined according to the discharge amount of the last frame message, a preset dark current and a time difference; wherein the time difference is determined according to the first frame message time and the last frame message time.

2. The vehicle dark current measurement method according to claim 1, characterized in that: Also includes: When the first frame message discharge amount is greater than or equal to the last frame message discharge amount, determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount; A second dark current is determined according to the sleep discharge amount and the sleep time.

3. The vehicle dark current measurement method according to claim 2, characterized in that: After determining the second dark current according to the sleep discharge amount and the sleep time, the method further includes: The second dark current is determined as the preset dark current.

4. The vehicle dark current measurement method according to claim 2, characterized in that: The step of determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount includes: When the wake-up times is 1, the difference between the first frame message time and the last frame message time is determined as the first sleep time, and the difference between the first frame message discharge amount and the last frame message discharge amount is used as the first sleep discharge amount.

5. The vehicle dark current measurement method according to claim 2, characterized in that: The method of determining the sleep time according to the first frame message time and the last frame message time, and determining the sleep discharge amount according to the first frame message discharge amount and the last frame message discharge amount, further includes: When the number of wake-up times is greater than 1, the difference between the target first frame message time and the target last frame message time is determined as the overall time; wherein the target first frame message time is the first frame message time after the last vehicle wake-up, and the target last frame message time is the last frame message time after the first vehicle sleep; Determine a second sleep time by taking the difference between the overall time and the total wake-up time within the overall time; The difference between the discharge amount of the first frame message after the last vehicle awakening and the discharge amount of the last frame message after the first vehicle dormancy is determined as the second dormancy discharge amount.

6. The vehicle dark current measurement method according to claim 1, characterized in that: Before determining the first dark current, it also includes: The power percentage of the last frame message discharge amount is obtained, and when it is determined that the power percentage meets a preset accuracy requirement, the last frame message discharge amount is determined to be valid.

7. The vehicle dark current measurement method according to claim 1, characterized in that: The step of determining the first dark current according to the discharge amount of the last frame message, the preset dark current and the time difference comprises: When the discharge amount of the last frame message is greater than the first preset discharge amount, and the discharge amount of the first frame message is less than the second preset discharge amount, the total discharge amount is determined according to the discharge amount of the first frame message, the discharge amount of the last frame message and the total power range, and the quotient of the total discharge amount and the time difference is taken as the dark current of the current sleep cycle; When the discharge amount of the last frame message is less than or equal to the first preset discharge amount, or the discharge amount of the first frame message is greater than or equal to the second preset discharge amount, the quotient of the discharge amount of the last frame message and the time difference is used as the dark current of the current sleep cycle; The dark current of the current sleep cycle and the preset dark current are accumulated to obtain a first dark current.

8. A dark current measuring device for a whole vehicle, characterized in that: The device comprises: The message data acquisition module is used to obtain the first frame message discharge amount and the first frame message time after each vehicle wake-up, and the last frame message discharge amount and the last frame message time after each vehicle sleep; The first dark current determination module is used to determine the first dark current according to the discharge amount of the last frame message, the preset dark current and the time difference when the discharge amount of the first frame message is less than the discharge amount of the last frame message; wherein the time difference is determined according to the first frame message time and the last frame message time.

9. A vehicle dark current measurement device, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform the operation of the whole vehicle dark current measurement method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one executable instruction. When the executable instruction is executed on the whole vehicle dark current measurement device / apparatus, the whole vehicle dark current measurement device / apparatus performs the operation of the whole vehicle dark current measurement method as described in any one of claims 1-7.

Images