CN116620101A - A battery detection method, device, equipment and storage medium - Google Patents

Abstract

The embodiment of the application provides a battery detection method, a device, equipment and a storage medium, wherein the method comprises the steps of acquiring initial battery information of an electric automobile in a power-down state; determining whether the battery management system BMS enters a sleep state based on the initial battery information; when the BMS is determined to enter a sleep state, determining a wake-up period of the BMS according to the initial battery information; based on the wake-up period of the BMS, periodically waking up the BMS to detect the battery when the electric automobile is in a power-down state. The method can also keep the detection of the battery state when the electric automobile is in the dormant state, and can effectively reduce the risk of failure of the battery of the electric automobile.

Description

A battery detection method, device, equipment and storage medium

technical field

The invention relates to the technical field of electric vehicle safety, in particular to a battery detection method, device, equipment and storage medium.

Background technique

The power battery of an electric vehicle, as one of the three major components of an electric vehicle (battery, motor, and electronic control), is the power source of the entire vehicle system. The power battery is actually a general term, including three batteries, modules, and battery packs. Hierarchy, simply speaking, the battery pack is composed of several battery modules, and each battery module is filled with several battery cells to provide the high voltage and large power required by electric vehicles.

At present, in the related technology, the BMS (Battery Management System, BMS for short) can detect the temperature, power and other information of the power battery during the operation and charging process of the electric vehicle, and can display the temperature, power and other information on the dashboard in real time, and Upload the detected information to the electric vehicle remote monitoring system. When the power battery temperature, power and other information are abnormal, the car end will send out an alarm and remind the user that the power battery is in an abnormal state. However, when the electric vehicle is in the dormant mode, the BMS is also in a dormant state, and the BMS cannot detect the state of the battery, so that it cannot be detected if the battery is abnormal during the dormant state of the electric vehicle, which increases the risk of battery failure in the electric vehicle.

Contents of the invention

In view of this, the present application provides a battery detection method, device, equipment and storage medium to help solve the problem in the prior art that when the electric vehicle is in the sleep mode, the BMS will also be in the sleep state, and the BMS cannot detect the battery state, resulting in During the dormant state of the car, the abnormality of the battery cannot be detected, which increases the risk of failure of the battery of the electric vehicle.

In the first aspect, the embodiment of the present application provides a battery detection method, the method comprising:

Obtain the initial battery information of the electric vehicle in the power-off state;

Based on the initial battery information, determine whether the battery management system BMS enters a dormant state;

When determining that the BMS enters a dormant state, determine a wake-up cycle of the BMS according to the initial battery information;

Based on the wake-up cycle of the BMS, the BMS is periodically woken up to detect the battery when the electric vehicle is in a power-off state.

In a possible implementation manner of the first aspect, it also includes:

Based on a preset reporting period, the battery information detected by the BMS is sent to the battery management device.

In a possible implementation manner of the first aspect, the wake-up period of the BMS is shorter than the reporting period;

The wake-up cycle based on the BMS, periodically waking up the BMS to detect the battery when the electric vehicle is in a power-off state includes:

Based on the wake-up cycle of the BMS, when the electric vehicle is in a power-off state, the BMS is periodically woken up to detect the battery, and the battery information is obtained and stored;

The sending the battery information detected by the BMS to the battery management device based on the reporting period includes:

Based on the reporting period, the battery information stored in the current reporting period is sent to the battery management device.

In a possible implementation manner of the first aspect, it also includes:

When it is determined that the BMS does not enter the sleep state, trigger the BMS to maintain the working state of detecting the battery when the electric vehicle is in the power-off state, and send the battery information detected by the BMS to the battery management device, and re- Execute the steps to obtain the initial battery information when the electric vehicle is powered off.

In a possible implementation manner of the first aspect, the initial battery information includes battery temperature information;

The determining whether the BMS enters a dormant state based on the initial battery information includes:

Detecting whether the battery temperature in the initial battery information is greater than a first temperature threshold;

When the battery temperature in the initial battery information is greater than the first temperature threshold, it is determined that the BMS does not enter the sleep state; or,

When the battery temperature in the initial battery information is not greater than the first temperature threshold, it is determined that the BMS enters the sleep state.

In a possible implementation manner of the first aspect, the initial battery information further includes battery power information;

When determining that the BMS enters the dormant state, determining the wake-up cycle of the BMS according to the initial battery information includes:

When determining that the BMS enters the dormant state, detect whether the battery temperature in the initial battery information is greater than a second temperature threshold and whether the battery power in the initial battery information is greater than the power threshold;

If the battery temperature in the initial battery information is greater than the second temperature threshold and the battery power is greater than the power threshold, then determine the first wake-up period as the wake-up period of the BMS; or,

If the battery temperature in the initial battery information is not greater than the second temperature threshold or the battery power in the initial battery information is not greater than the power threshold, then the second wake-up cycle is determined as the wake-up cycle of the BMS; wherein, the first The second wake-up period is longer than the first wake-up period.

In a possible implementation manner of the first aspect, the acquiring the initial battery information when the electric vehicle is in a power-off state includes:

When it is detected that the electric vehicle is switched from the power-on state to the power-off state, the battery information detected by the BMS before the electric vehicle is switched to the power-off state is used as the initial battery information when the electric vehicle is in the power-off state.

In a possible implementation manner of the first aspect, after sending the battery information detected by the BMS to the battery management device based on the preset reporting period, the method further includes:

From the step of cyclically executing the initial battery information of the electric vehicle in the power-off state to the step of sending the battery information detected by the BMS to the battery management device based on the preset reporting period, until the electric vehicle is switched from the power-off state to the power-on state.

In a possible implementation manner of the first aspect, the acquiring the initial battery information when the electric vehicle is in a power-off state includes:

When the electric vehicle is in the power-off state, the battery information detected in the preset target BMS wake-up cycle in the last reporting cycle is obtained as the initial battery information when the electric vehicle is in the power-off state.

In a second aspect, an embodiment of the present application provides a battery detection device, the method comprising:

The obtaining unit is used to obtain the initial battery information of the electric vehicle in a power-off state;

A processing unit, configured to determine whether the battery management system BMS enters a dormant state based on the initial battery information;

The processing unit is further configured to determine the wake-up period of the BMS according to the initial battery information when it is determined that the BMS enters a dormant state;

The processing unit is further configured to periodically wake up the BMS to detect the battery when the electric vehicle is in a power-off state based on the wake-up cycle of the BMS.

In a third aspect, an embodiment of the present application provides an electronic device, and the method includes:

A memory for storing computer program instructions and a processor for executing the program instructions, wherein, when the computer program instructions are executed by the processor, the electronic device is triggered to perform the method described in any one of the above first aspects .

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned The method of any one of the first aspects.

Using the solution provided by the embodiment of the present application, the initial battery information of the electric vehicle in the power-off state is obtained; based on the initial battery information, it is determined whether the battery management system BMS enters the dormant state; when it is determined that the BMS enters the dormant state, according to the The initial battery information determines the wake-up period of the BMS; based on the wake-up period of the BMS, the BMS is periodically woken up to detect the battery when the electric vehicle is in a power-off state. In this way, in the embodiment of the present application, when the electric vehicle is in the power-off state, it is possible to obtain the initial battery information of the electric vehicle in the power-off state, determine whether the BMS needs to enter the dormant state according to the initial battery information, and determine whether the BMS enters the dormant state. , the wake-up period of the BMS needs to be determined according to the initial battery information. Based on the wake-up period of the BMS, the BMS is periodically woken up to detect the state of the battery when the electric vehicle is in a power-off state. That is, when the battery car is in the power-off state and the BMS needs to go to sleep, the wake-up period of the BMS can be determined according to the initial battery information of the electric vehicle in the power-off state, and the BMS can be periodically switched from the sleep state to the battery according to the wake-up cycle of the BMS. After the electric vehicle is powered off, it can also detect the battery status, which can effectively reduce the risk of battery failure of the electric vehicle.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative labor.

FIG. 1 is a schematic flow chart of a battery detection method provided in an embodiment of the present application;

FIG. 2 is a schematic flow chart of another battery detection method provided in the embodiment of the present application;

FIG. 3 is a schematic structural diagram of a battery testing device provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another battery detection device provided in the embodiment of the present application;

FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

It should be understood that the term "and/or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Before the specific introduction of the embodiment of the present application, the terms applied or possibly applied in the embodiment of the present application are firstly explained.

In related technologies, the BMS can detect information such as the temperature and power of the power battery during the operation and charging process of the electric vehicle, display the temperature, power and other information on the dashboard in real time, and upload the detected information to the remote monitoring system of the electric vehicle. When the power battery temperature, power and other information are abnormal, the car end will send out an alarm and remind the user that the power battery is in an abnormal state. However, when the electric vehicle is in the sleep mode due to power-off, the BMS will also be in the sleep state, and the BMS cannot detect the battery status. As a result, if the battery is abnormal during the sleep state of the electric vehicle, it cannot be detected, which increases the risk of battery failure in the electric vehicle.

In view of the above problems, the present application provides a battery detection method, device, equipment and storage medium to obtain the initial battery information of the electric vehicle in the power-off state; based on the initial battery information, determine whether the battery management system BMS enters the dormant state; When it is determined that the BMS enters the dormant state, the wake-up period of the BMS is determined according to the initial battery information; based on the wake-up period of the BMS, the BMS is periodically woken up to detect the battery when the electric vehicle is in a power-off state. In this way, in the embodiment of the present application, when the electric vehicle is in the power-off state, it is possible to obtain the initial battery information of the electric vehicle in the power-off state, determine whether the BMS needs to enter the dormant state according to the initial battery information, and determine whether the BMS enters the dormant state. , the wake-up period of the BMS needs to be determined according to the initial battery information. Based on the wake-up period of the BMS, the BMS is periodically woken up to detect the state of the battery when the electric vehicle is in a power-off state. That is, when the battery car is in the power-off state and the BMS needs to go to sleep, the wake-up period of the BMS can be determined according to the initial battery information of the electric vehicle in the power-off state, and the BMS can be periodically switched from the sleep state to the battery according to the wake-up cycle of the BMS. After the electric vehicle is powered off, it can also detect the battery status, which can effectively reduce the risk of battery failure of the electric vehicle. The details are as follows:

Referring to FIG. 1 , it is a schematic flow chart of a battery testing method provided in an embodiment of the present application. As shown in Figure 1, the method includes:

S101. Obtain initial battery information of the electric vehicle in a power-off state.

In the embodiment of the present application, when the electric vehicle is in a power-off state, it is also necessary to detect the battery through the BMS. At this time, it is necessary to determine the wake-up period of the BMS according to the state information of the battery to detect the battery. Based on this, it is necessary to obtain the initial battery information of the electric vehicle in the power-off state.

When obtaining the initial battery information of an electric vehicle, the acquisition method is different according to the state of the electric vehicle. For example, the method of obtaining the initial battery information when the electric vehicle is switched from the power-on state to the power-off state The way to get the initial battery information is different in different states.

As a possible implementation, obtaining the initial battery information of the electric vehicle in the power-off state includes:

When it is detected that the electric vehicle is switched from the power-on state to the power-off state, the battery information detected by the BMS before the electric vehicle is switched to the power-off state is used as the initial battery information when the electric vehicle is in the power-off state.

That is, when the electric vehicle is switched from the power-on state to the power-off state, since the electric vehicle is switched to the power-off state, it is necessary to first detect whether the BMS can switch to the sleep state. At this point, it is necessary to obtain the initial battery information of the electric vehicle. Because when the electric vehicle is powered on, the BMS continuously detects the battery information of the battery. And when the electric vehicle is switched from the power-on state to the power-off state, the battery information of the battery when the electric vehicle is in the power-on state and the battery information of the battery when the electric vehicle is switched to the power-off state change little. At this time, the battery information detected by the BMS before the electric vehicle is switched to the power-off state can be used as the initial battery information when the electric vehicle is in the power-off state at the initial time when the electric vehicle is switched to the power-off state.

As a possible implementation, when the electric vehicle is in the power-off state for more than the preset time threshold, if the initial battery information needs to be obtained, the part of the battery information that has been obtained during the battery car’s power-off state can be used as the initial battery information .

As a possible implementation, the temperature of the battery has an important influence on the performance of the battery. When the battery temperature is too low, the charge and discharge capacity of the battery will decrease, and the battery discharge speed will slow down; Frequent overheating will greatly shorten the life of the battery. Therefore, in order to prevent the battery from malfunctioning due to the high temperature of the battery when the electric vehicle is powered off, when the temperature of the battery exceeds a certain temperature threshold, it is considered that the temperature of the battery is too high. At this time, the BMS needs to continuously detect the battery information. When the temperature of the battery does not exceed a certain temperature threshold, the battery information can be detected periodically through the BMS, that is, it can be determined based on the temperature of the battery whether the BMS enters a sleep state. At this time, the initial battery information includes battery temperature.

As a possible implementation manner, in order to reduce the power consumption of the battery when the battery car is powered off, the initial battery information also includes the battery power.

It should be noted that the initial battery information may also include other information, such as the voltage and current of the battery connection port, which is not limited in this application.

As a possible implementation, the acquired initial battery information in the power-off state can be the battery information at one moment; it can also be the battery information processed by the arithmetic mean, geometric mean or mode within a period of time. The results are not limited in this application.

S102. Based on the initial battery information, determine whether the battery management system BMS enters a dormant state.

In the embodiment of the present application, after the initial battery information is obtained, it is necessary to determine whether the BMS inside the electric vehicle can enter a dormant state after the electric vehicle is powered off according to the battery-related data in the initial battery information. In order to prevent the battery from malfunctioning due to the high temperature of the battery when the electric vehicle is powered off, whether the BMS can enter the sleep state needs to detect the temperature of the battery in the initial battery information.

In some embodiments, the initial battery information includes battery temperature information; at this time, based on the initial battery information, determining whether the BMS enters a sleep state includes:

Detect whether the battery temperature in the initial battery information is greater than the first temperature threshold; when the battery temperature in the initial battery information is greater than the first temperature threshold, then determine that the BMS does not enter the sleep state; or, in the initial battery information, the battery temperature is not greater than the first temperature threshold When the temperature threshold is reached, it is determined that the BMS enters the sleep state.

In the embodiment of the present application, because the battery temperature and power are important factors to measure the safety of the battery after the battery is produced, and the impact of excessive battery temperature on the safety of the battery is much higher than that of the battery power on the safety of the battery, Therefore, when judging whether the BMS enters the dormant state, the battery temperature is given priority to judging whether the battery is in a safe state at this time. Based on this, after the initial battery information is acquired, the initial battery information includes battery temperature information. At this time, it may be detected whether the battery temperature in the initial battery information is greater than the first temperature threshold. That is to say, the value of the battery temperature in the initial battery information can be compared with the first temperature threshold. In an unsafe state, there is a risk of battery failure due to excessive battery temperature. At this time, it is necessary to continue to detect the temperature of the battery, so as to detect in time when the temperature of the battery continues to rise. Based on this, when the battery temperature in the initial battery information is greater than the first temperature threshold, it is determined that the BMS does not enter the sleep state, so as to detect the battery in real time. That is to say, when the power vehicle is powered off, the BMS does not enter the dormant state, but is still in the working state to detect the battery in the power vehicle. Alternatively, when the value of the battery temperature in the initial temperature information is not greater than the first temperature threshold, it means that the battery temperature of the current battery car is not too high, and there is no possibility of battery failure due to excessive temperature. Therefore, there is no need for the BMS to detect the temperature of the battery in real time. At this point, it can be determined that the BMS enters a dormant state. That is to say, when the electric vehicle is powered off, the BMS also enters a dormant state.

It should be noted that, in the embodiment of the present application, the dormant state of the BMS refers to a state in which the BMS no longer detects the battery when the electric vehicle is powered off.

Step S103, when it is determined that the BMS enters the sleep state, determine the wake-up cycle of the BMS according to the initial battery information.

In the embodiment of the application, after it is determined that the BMS enters the sleep state, in order to detect the battery, the BMS needs to be woken up periodically. At this time, it is necessary to determine the wake-up period of the BMS according to the initial battery information, so as to periodically wake up the BMS to detect the battery. If the battery-related data recorded in the initial battery information is different, the determined wake-up periods of the BMS are different. In some embodiments, when the initial battery information includes battery temperature information, the wakeup period of the BMS may be determined according to the battery temperature. For example, when the temperature of the battery is not greater than the first temperature threshold and greater than the second temperature threshold, it is determined that the wake-up period of the BMS is the first time. Or when the temperature of the battery is not greater than the second temperature threshold and greater than the third temperature threshold, determine that the wake-up period of the BMS is the second time. Or, when the temperature of the battery is not greater than the third temperature threshold, it is determined that the wake-up period of the BMS is the third time.

As a possible implementation manner, the initial battery information also includes battery power information. At this time, when it is determined that the BMS enters the dormant state, determining the wake-up cycle of the BMS according to the initial battery information includes:

When determining that the BMS enters the sleep state, detect whether the battery temperature in the initial battery information is greater than the second temperature threshold and whether the battery power in the initial battery information is greater than the power threshold; if the battery temperature in the initial battery information is greater than the second temperature threshold and the battery power greater than the power threshold, the first wake-up cycle is determined as the wake-up cycle of the BMS; or, the battery temperature in the initial battery information is not greater than the second temperature threshold or the battery power in the initial battery information is not greater than the power threshold, then the second wake-up The cycle is determined as the wake-up cycle of the BMS.

Wherein, the second wake-up period is longer than the first wake-up period.

That is, after it is determined that the BMS can enter the dormant state, it is necessary to determine the wake-up period of the BMS, so as to wake up the BMS periodically to detect the battery. At this time, when the initial battery information includes battery temperature information and battery power information, the BMS wake-up period may be determined according to the battery temperature information and battery power information in the initial battery information. The battery temperature in the initial battery information is compared with the second temperature threshold, and the battery power is compared with the power threshold. When the battery temperature in the initial battery information is greater than the second temperature threshold and the battery power is greater than the power threshold, the first wake-up cycle is determined as the wake-up cycle of the BMS. Or, when the battery temperature in the initial battery is not greater than the second temperature threshold or the battery power in the initial battery information is not greater than the power threshold, the second wake-up period is determined as the wake-up period of the BMS. Wherein, the second wake-up period is longer than the first wake-up period. That is to say, in the initial battery information, when the battery temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the battery power is greater than the power threshold, it means that the current battery temperature of the electric vehicle is high and the power is large, and the wake-up cycle needs to be set The time is short, so that the BMS can be woken up frequently, so that the BMS can detect the battery. At this time, the wake-up cycle can be set as the first wake-up cycle. In the initial battery information, when the battery temperature is not greater than the second temperature threshold, or the battery power is not greater than the power threshold, it means that the current battery temperature of the electric vehicle is not high, or the battery power is low. At this time, the wake-up cycle can be set to be longer Time, reduce the frequency of waking up the BMS without detecting the battery status of the power battery after the electric vehicle is powered off, which can reduce unnecessary power consumption of the battery. A longer second wake-up period.

In this way, different wake-up periods can be set according to the different battery states, so that the BMS can wake up periodically to detect the state of the battery, which can ensure that when the electric car is in the power-off state, the BMS can periodically The detection of the battery status can also ensure that the wake-up cycle of the BMS matches the current battery status, reducing unnecessary power consumption of the battery.

Step S104 , based on the wake-up period of the BMS, periodically wake up the BMS to detect the battery when the electric vehicle is in a power-off state.

In the embodiment of the present application, after the wake-up period of the BMS is determined, the BMS can be periodically woken up according to the wake-up period of the BMS when the electric vehicle is in the power-off state, that is, the BMS is periodically switched from the sleep state to In the activated state, the BMS can detect the battery in the electric vehicle in the activated state.

In the embodiment of the present application, when the electric vehicle is in the power-off state, it is possible to obtain the initial battery information of the electric vehicle in the power-off state, and determine whether the BMS needs to enter the dormant state according to the initial battery information. When determining that the BMS enters the dormant state, it is necessary to The initial battery information determines the wake-up period of the BMS. Based on the wake-up period of the BMS, the BMS is periodically woken up to detect the battery status when the electric vehicle is in a power-off state. That is, when the battery car is in the power-off state and the BMS needs to go to sleep, the wake-up period of the BMS can be determined according to the initial battery information of the electric vehicle in the power-off state, and the BMS can be periodically switched from the sleep state to the battery according to the wake-up cycle of the BMS. After the electric vehicle is powered off, it can also detect the battery status, which can effectively reduce the risk of battery failure of the electric vehicle.

Referring to FIG. 2 , it is a schematic flowchart of a battery detection method provided by an embodiment of the present application. As shown in Figure 2, the method includes:

Step S201, acquiring the initial battery information of the electric vehicle in the power-off state.

For details, refer to step S101, which will not be repeated here.

Step S202, based on the initial battery information, determine whether the battery management system BMS enters a dormant state.

For details, refer to step S102, which will not be repeated here.

It should be noted that when determining whether the BMS enters the sleep state based on the initial battery information, there are two determination results. One is to determine that the BMS enters the sleep state, and the other is to determine that the BMS does not enter the sleep state. When it is determined that the BMS enters the sleep state, step S203a, step S204-step S206 may be performed; when it is determined that the BMS does not enter the sleep state, step S203b, step S206 may be performed.

Step S203a, when it is determined that the BMS enters the sleep state, determine the wake-up cycle of the BMS according to the initial battery information.

For details, refer to step S103, which will not be repeated here.

Step S203b. When it is determined that the BMS does not enter the dormant state, trigger the BMS to maintain the working state of detecting the battery when the electric vehicle is powered off, and send the battery information detected by the BMS to the battery management device, and re-execute the steps to obtain the electric vehicle Initial battery information when in power-off state.

In the embodiment of the present application, when it is detected that the battery temperature in the initial battery information is greater than the first temperature threshold, it means that the current temperature of the electric vehicle is high, and real-time detection is required. At this time, the BMS needs not to enter the dormant state, but is still in the working state . Based on this, when it is determined that the BMS does not enter the dormant state, trigger the BMS to maintain the working state when the electric vehicle is powered off and not enter the dormant state, so that the BMS can still detect the battery when the electric vehicle is powered off. The BMS sends the detected battery information to the battery management device, and re-executes step S201, that is, until the electric vehicle switches from the power-off state to the power-on state, until it is determined that the BMS enters the dormant state or the electric vehicle switches from the power-off state to the power-on state .

In some embodiments, re-executing step S201 to acquire the initial battery information when the electric vehicle is in the power-off state includes: acquiring the battery information detected when the BMS detects the battery in step S203b, and using the detected battery information as the initial battery information acquired battery information.

After reacquiring the initial battery information, it is necessary to judge whether the BMS enters the dormant state again based on the reacquired initial battery information. When it is determined not to enter the dormant state, the BMS needs to continue to detect the battery in real time and obtain battery information.

In some embodiments, in order to reduce battery consumption, the BMS may periodically report battery information to the battery management device when detecting the battery to obtain battery information. At this time, the reporting cycle can be preset, and the BMS can store the detected battery information, and periodically report the detected battery information to the battery management device according to the preset reporting cycle.

In some embodiments, when the BMS reports the battery information according to the reporting cycle, when step S201 is re-executed to obtain the initial battery information of the electric vehicle in the power-off state, the latest battery information detected by the BMS can be obtained as the battery information of the electric vehicle in the power-off state. Initial battery information.

Step S204, based on the wake-up period of the BMS, periodically wake up the BMS to detect the battery when the electric vehicle is in a power-off state.

For details, refer to step S104, which will not be repeated here.

Step S205 , based on a preset reporting period, sending the battery information detected by the BMS to the battery management device.

In this embodiment of the application, the BMS obtains battery information when detecting the battery, and can send the battery information to the battery management device, so that the battery management device can obtain the battery information, and can issue an early warning when the battery is abnormal.

It should be understood that the reporting period may be preset, and the BMS may periodically report the detected battery information according to the reporting period.

In some embodiments, the reporting period may be determined according to the wake-up period of the BMS. At this time, reporting periods corresponding to different wake-up periods may be preset. After the wake-up period of the BMS is determined, the reporting period may be determined according to the wake-up period of the BMS.

As a possible implementation manner, the wake-up period of the BMS is shorter than the reporting period. At this time, based on the wake-up cycle of the BMS, periodically waking up the BMS to detect the battery when the electric vehicle is in the power-off state includes:

Based on the wake-up cycle of the BMS, the BMS is periodically woken up to detect the battery when the electric vehicle is in the power-off state, and the battery information is obtained and stored.

Based on the reporting period, sending the battery information detected by the BMS to the battery management device includes:

Based on the reporting period, the battery information stored in the current reporting period is sent to the battery management device.

That is, the wake-up period of the BMS is shorter than the report period, and the time of one report period is longer than the time of one wake-up period of the BMS. At this time, the BMS needs to detect the battery in each wake-up period, and store the battery information when the battery information is obtained, so that the stored battery information can be reported to the battery management device when the reporting period is reached.

When storing battery information, when BMS reports the stored battery information in each reporting period, it can only report the battery information stored in the current reporting period, without reporting the battery information stored in other reporting periods, so as to improve data processing efficiency.

Step S206, cyclically execute the step of obtaining the initial battery information of the electric vehicle in the power-off state to the step of sending the battery information detected by the BMS to the battery management device based on the preset reporting period, until the electric vehicle is switched from the power-off state to the power-on state.

Under normal circumstances, the temperature of the battery in the electric vehicle will gradually decrease when the electric vehicle is powered off until the temperature does not change. Or, under unusual circumstances, the battery in an electric vehicle may rise when the electric vehicle is powered off. Therefore, after reporting the battery information, it is necessary to re-acquire the initial battery information of the electric vehicle in the power-off state, and re-determine whether the BMS enters the dormant state according to the re-acquired initial battery information. When it is determined that the BMS enters the dormant state, it is necessary to re-determine the wake-up period of the BMS, and periodically wake up the BMS to detect the battery according to the re-determined wake-up period of the BMS. Re-send the battery information detected by the BMS to the battery management device according to the preset reporting cycle. That is to say, in order to detect the B battery more accurately and reduce battery consumption, in this application, the above steps S201 to S206 need to be re-executed until the electric vehicle is switched from the power-off state to the power-on state.

In some embodiments, the above step S201 to step S206 may be re-executed according to a preset time period until the electric vehicle switches from the power-off state to the power-on state.

In some embodiments, when step S201 is re-executed to obtain the initial battery information when the electric vehicle is in a power-off state, the following manner may be used to obtain the initial battery information. That is, when the electric vehicle is in the power-off state, the battery information detected in the preset target BMS wake-up cycle in the previous reporting cycle is obtained as the initial battery information when the electric vehicle is in the power-off state.

That is, when re-executing step S201 to obtain the initial battery information when the electric vehicle is in the power-off state, the initial battery information when the electric vehicle is in the power-off state can be determined from the battery information obtained in the last reporting cycle. Since the duration of a reporting cycle is longer than that of a wake-up cycle, the last report cycle may contain battery information acquired in multiple BMS wake-up cycles. At this time, the battery information detected in the preset target BMS wake-up cycle in the previous cycle can be used as the initial battery information when the electric vehicle is in a power-off state. That is, the target BMS wake-up cycle can be preset in multiple BMS wake-up cycles included in the report cycle, so that the battery information detected in the preset target BMS wake-up cycle in the last report cycle can be used as the battery information when the electric vehicle is in the power-off state. Initial battery information.

In the embodiment of the present application, when the electric vehicle is in the power-off state, it is possible to obtain the initial battery information of the electric vehicle in the power-off state, and determine whether the BMS needs to enter the dormant state according to the initial battery information. When determining that the BMS enters the dormant state, it is necessary to The initial battery information determines the wake-up period of the BMS. Based on the wake-up period of the BMS, the BMS is periodically woken up to detect the battery status when the electric vehicle is in a power-off state. That is, when the battery car is in the power-off state and the BMS needs to go to sleep, the wake-up period of the BMS can be determined according to the initial battery information of the electric vehicle in the power-off state, and the BMS can be periodically switched from the sleep state to the battery according to the wake-up cycle of the BMS. After the electric vehicle is powered off, it can also detect the battery status, which can effectively reduce the risk of battery failure of the electric vehicle.

Referring to FIG. 3 , it is a schematic structural diagram of a battery testing device according to an embodiment of the present application. As shown in Figure 3, the device includes:

The obtaining unit 301 is configured to obtain initial battery information of the electric vehicle in a power-off state.

The processing unit 302 is configured to determine whether the battery management system BMS enters a sleep state based on the initial battery information.

The processing unit 302 is further configured to determine the wake-up period of the BMS according to the initial battery information when it is determined that the BMS enters the sleep state.

The processing unit 302 is also configured to periodically wake up the BMS to detect the battery when the electric vehicle is in a power-off state based on the wake-up cycle of the BMS.

As a possible implementation, the above battery detection device, as shown in Figure 4, also includes:

The sending unit 303 is configured to send the battery information detected by the BMS to the battery management device based on a preset reporting period.

As a possible implementation manner, the wake-up period of the BMS is shorter than the reporting period.

The processing unit 302 is specifically used for the wake-up cycle based on the BMS, periodically wakes up the BMS to detect the battery when the electric vehicle is in a power-off state, and obtains and stores battery information.

The sending unit 303 is specifically configured to send the battery information stored in the current reporting period to the battery management device based on the reporting period.

As a possible implementation, the processing unit 302 is also configured to trigger the BMS to maintain the working state of detecting the battery when the electric vehicle is in the power-off state when it is determined that the BMS does not enter the dormant state, and store the battery information detected by the BMS Send it to the battery management device, and re-execute the steps to obtain the initial battery information when the electric vehicle is powered off.

As a possible implementation manner, the initial battery information includes battery temperature information.

The processing unit 302 is specifically configured to detect whether the battery temperature in the initial battery information is greater than the first temperature threshold; when the battery temperature in the initial battery information is greater than the first temperature threshold, then determine that the BMS does not enter the sleep state; or, in the initial battery information When the battery temperature is not greater than the first temperature threshold, it is determined that the BMS enters the sleep state.

As a possible implementation manner, the initial battery information also includes battery power information.

The processing unit 302 is specifically configured to detect whether the battery temperature in the initial battery information is greater than the second temperature threshold and whether the battery power in the initial battery information is greater than the power threshold when determining that the BMS enters the sleep state; if the battery temperature in the initial battery information is greater than The second temperature threshold and the battery power is greater than the power threshold, then determine the first wake-up cycle as the wake-up cycle of the BMS; or, the battery temperature in the initial battery information is not greater than the second temperature threshold or the battery power in the initial battery information is not greater than the power threshold, the second wake-up period is determined as the wake-up period of the BMS.

Wherein, the second wake-up period is longer than the first wake-up period.

As a possible implementation, the processing unit 302 is specifically configured to, when detecting that the electric vehicle is switched from the power-on state to the power-off state, take the battery information detected by the BMS before the electric vehicle is switched to the power-off state as the battery information that the electric vehicle is in the power-off state. Initial battery information in the battery state.

As a possible implementation, the processing unit 302 is specifically configured to obtain the battery information detected in the preset target BMS wake-up cycle in the previous reporting cycle as the battery information when the electric vehicle is in the power-off state when the electric vehicle is in the power-off state. Initial battery information.

Corresponding to the foregoing embodiments, the present application further provides an electronic device. FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. The electronic device 500 may include: a processor 501 , a memory 502 and a communication unit 503 . These components communicate through one or more buses. Those skilled in the art can understand that the structure of the electronic equipment shown in the figure does not constitute a limitation to the embodiment of the present invention. It can be either a bus structure or a star structure. The structure may also include more or fewer components than shown, or combine certain components, or arrange different components.

Wherein, the communication unit 503 is configured to establish a communication channel, so that the electronic device can communicate with other devices. Receive user data from other devices or send user data to other devices.

The processor 501 is the control center of the electronic equipment, which uses various interfaces and lines to connect various parts of the entire electronic equipment, and runs or executes software programs and/or modules stored in the memory 502, and calls stored in the memory. data to perform various functions of electronic devices and/or process data. The processor may be composed of an integrated circuit (integrated circuit, IC), for example, may be composed of a single packaged IC, or may be composed of multiple packaged ICs connected with the same function or different functions. For example, the processor 501 may only include a central processing unit (central processing unit, CPU). In the embodiments of the present invention, the CPU may be a single computing core, or may include multiple computing cores.

The memory 502 is used to store the execution instructions of the processor 501. The memory 502 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.

When the execution instructions in the memory 502 are executed by the processor 501 , the electronic device 500 can execute some or all of the steps in the embodiments shown in FIG. 1 and FIG. 2 .

In a specific implementation, the present invention also provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the battery detection method of the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (read-only memory, ROM) or a random access memory (random access memory, RAM), etc.

Those skilled in the art can clearly understand that the technologies in the embodiments of the present invention can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the essence of the technical solutions in the embodiments of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM , magnetic disk, optical disk, etc., including several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present invention.

For the same and similar parts among the various embodiments in this specification, refer to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and for relevant parts, please refer to the description in the method embodiment.

Claims (12)

1. A battery detection method, characterized by being applied to an electric automobile, the method comprising:

acquiring initial battery information of an electric automobile in a power-down state;

determining whether the battery management system BMS enters a sleep state based on the initial battery information;

when the BMS is determined to enter a sleep state, determining a wake-up period of the BMS according to the initial battery information;

based on the wake-up period of the BMS, periodically waking up the BMS to detect the battery when the electric automobile is in a power-down state.

2. The method as recited in claim 1, further comprising:

and based on a preset reporting period, transmitting the battery information detected by the BMS to battery management equipment.

3. The method of claim 2, wherein the wake-up period of the BMS is less than the reporting period;

the periodically waking up the BMS to detect the battery in the powered-down state of the electric vehicle based on the wake-up period of the BMS includes:

Based on the wake-up period of the BMS, periodically waking up the BMS to detect the battery in a power-down state of the electric automobile, obtaining battery information and storing the battery information;

the transmitting the battery information detected by the BMS to the battery management device based on the reporting period includes:

and based on the reporting period, transmitting the battery information stored in the current reporting period to the battery management equipment.

4. The method as recited in claim 1, further comprising:

when the BMS is determined not to enter the dormant state, triggering the BMS to keep the working state of detecting the battery when the electric automobile is in the power-down state, sending battery information detected by the BMS to battery management equipment, and re-executing the step to obtain initial battery information when the electric automobile is in the power-down state.

5. The method of claim 1, wherein the initial battery information comprises information of battery temperature;

the determining whether the BMS enters the sleep state based on the initial battery information includes:

detecting whether the battery temperature in the initial battery information is greater than a first temperature threshold;

when the battery temperature in the initial battery information is greater than a first temperature threshold value, determining that the BMS does not enter a sleep state; or,

And when the battery temperature in the initial battery information is not greater than a first temperature threshold value, determining that the BMS enters a sleep state.

6. The method of claim 5, wherein the initial battery information further includes information on battery power;

the determining, when the BMS is determined to enter the sleep state, a wake-up period of the BMS according to the initial battery information includes:

detecting whether the battery temperature in the initial battery information is greater than a second temperature threshold value and whether the battery power in the initial battery information is greater than a power threshold value when the BMS is determined to enter a sleep state;

if the battery temperature in the initial battery information is greater than a second temperature threshold and the battery power is greater than a power threshold, determining a first wake-up period as the wake-up period of the BMS; or,

determining a second wake-up period as the wake-up period of the BMS if the battery temperature in the initial battery information is not greater than a second temperature threshold or the battery power in the initial battery information is not greater than a power threshold; wherein the second wake-up period is greater than the first wake-up period.

7. The method according to any one of claims 1 to 6, wherein the acquiring initial battery information when the electric vehicle is in a powered-down state includes:

When the electric automobile is detected to be switched from the power-on state to the power-off state, the battery information detected by the BMS before the electric automobile is switched to the power-off state is used as initial battery information when the electric automobile is in the power-off state.

8. The method of claim 2, further comprising, after the transmitting the battery information detected by the BMS to the battery management device based on the preset reporting period:

and the step of circularly executing obtains initial battery information of the electric automobile in a power-down state, and the step of sending the battery information detected by the BMS to battery management equipment based on a preset reporting period until the electric automobile is switched from the power-down state to the power-up state.

9. The method of claim 8, wherein the obtaining initial battery information when the electric vehicle is in a powered down state comprises:

and when the electric automobile is in the power-down state, acquiring battery information detected in a preset target BMS wake-up period in the last reporting period as initial battery information when the electric automobile is in the power-down state.

10. A battery detection device, characterized by comprising:

the acquisition unit is used for acquiring initial battery information of the electric automobile in a power-down state;

A processing unit for determining whether the battery management system BMS enters a sleep state based on the initial battery information;

the processing unit is further configured to determine a wake-up period of the BMS according to the initial battery information when the BMS is determined to enter a sleep state;

the processing unit is further used for periodically waking up the BMS to detect the battery under the power-down state of the electric automobile based on the wake-up period of the BMS.

11. An electronic device comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the electronic device to perform the method of any one of claims 1-9.

12. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program, when run, controls a device in which the computer readable storage medium is located to perform the method of any one of claims 1-9.