CN117538592A

CN117538592A - Current detection method, current detection device, electronic device, and storage medium

Info

Publication number: CN117538592A
Application number: CN202311303968.7A
Authority: CN
Inventors: 罗永刚
Original assignee: Xinwangda Power Technology Co ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-02-09

Abstract

The invention discloses a current detection method, a current detection device, electronic equipment and a storage medium, and relates to the technical field of battery current management. The current detection method comprises the following steps: and carrying out difference value calculation on the acquired sampling current value and the equipment current accumulated value to obtain a first current difference value. The first current difference is compared with a target current deviation threshold to determine whether the sampled current deviates. And when the sampling current deviates, acquiring a maximum current accumulated value, and carrying out current detection on the maximum current accumulated value and a current safety threshold value, so as to judge whether the battery management equipment has safety risks. The current detection method of the embodiment only needs to use one current sensor to acquire the adopted current value, and then carries out current detection through current deviation judgment and current safety judgment, thereby improving the reliability of current detection.

Description

Current detection method, current detection device, electronic device, and storage medium

Technical Field

The present invention relates to the field of battery current management technologies, and in particular, to a current detection method, a current detection device, an electronic apparatus, and a storage medium.

Background

At present, a vehicle battery management system can monitor the safety condition of a battery through sampling, detecting and analyzing the current of the battery.

In the related art, a vehicle battery management system is generally provided with two current sensors, namely a current divider and a hall sensor, so as to jointly collect battery current. However, in the above battery current collection method, two different current sensors are adopted, so that when any one of the current sensors fails, the accuracy of current detection may be reduced, thereby reducing the reliability of current detection of the vehicle battery management system and further increasing the safety risk of battery use. Therefore, how to provide a current detection method to improve the reliability of current detection is a technical problem to be solved.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a current detection method which can improve the reliability of current detection.

The invention also provides a current detection device, an electronic device applying the current detection method and a computer readable storage medium applying the current detection method.

A current detection method according to an embodiment of a first aspect of the present invention is applied to a battery management apparatus for electrically connecting with a battery, a target high-voltage apparatus, respectively, and includes:

acquiring a sampling current value of the battery and an accumulated device current value of target high-voltage devices;

performing difference calculation according to the sampling current value and the equipment current accumulated value to obtain a first current difference value;

comparing according to the first current difference value and a preset target current deviation threshold value to obtain a current comparison result;

obtaining a maximum current accumulated value of the target voltage equipment according to the current comparison result;

and detecting the current according to the maximum current accumulated value and a preset current safety threshold.

The current detection method provided by the embodiment of the invention has at least the following beneficial effects: and carrying out difference value calculation on the acquired sampling current value and the equipment current accumulated value to obtain a first current difference value. The first current difference is compared with a target current deviation threshold to determine whether the sampled current deviates. And when the sampling current deviates, acquiring a maximum current accumulated value, and carrying out current detection on the maximum current accumulated value and a current safety threshold value, so as to judge whether the battery management equipment has safety risks. The current detection method of the embodiment only needs to use one current sensor to acquire the adopted current value, and then carries out current detection through current deviation judgment and current safety judgment, thereby improving the reliability of current detection.

According to some embodiments of the invention, the obtaining the maximum current accumulated value of the target voltage device according to the current comparison result includes:

if the current comparison result shows that the first current difference value is larger than the target current deviation threshold value, acquiring a maximum current accumulated value of the target high-voltage equipment;

and if the current comparison result shows that the first current difference value is smaller than or equal to the target current deviation threshold value, generating current normal information.

According to some embodiments of the invention, the current detection method further comprises:

if the current detection result shows that the maximum current accumulated value is smaller than or equal to the current safety threshold value, entering an early warning state;

and if the current detection result shows that the maximum current accumulated value is larger than the current safety threshold, reducing the working power of the equipment.

According to some embodiments of the invention, if the result of the current detection indicates that the maximum current accumulated value is greater than the current safety threshold, reducing the operating power of the device includes:

if the current detection result shows that the maximum current accumulated value is larger than the current safety threshold, performing difference calculation according to the maximum current accumulated value and the current safety threshold to obtain a second current difference;

performing power reduction operation according to the second current difference value, and performing the acquisition of the sampling current value of the battery and the device current accumulated value of the target high-voltage device again until the current detection result indicates that the maximum current accumulated value is smaller than or equal to the current safety threshold;

wherein said performing a power reduction operation according to said second current difference comprises:

if the second current difference value is within a preset first difference value range, performing power reduction operation according to a preset first value;

if the second current difference value is in a preset second difference value range, performing power reduction operation according to a preset second value; wherein a minimum range value of the second difference range is greater than a maximum range value of the first difference range, and the second value is greater than the first value;

if the second current difference value is in a preset third difference value range, performing power reduction operation according to a preset third value; wherein a minimum range value of the third difference range is greater than a maximum range value of the second difference range, and the third value is greater than the second value.

According to some embodiments of the invention, the obtaining the sampled current value of the battery includes:

sampling fault detection is carried out according to a preset fault type, and a fault judgment result is obtained;

and if the fault judgment result indicates that sampling is normal, acquiring the sampling current value.

According to some embodiments of the invention, the acquiring the sampled current value of the battery further comprises:

if the fault judgment result indicates that the sampling is abnormal, primarily reducing the working power of the equipment;

and performing sampling fault detection according to the preset fault type again to obtain a fault judgment result until the fault judgment result indicates that the fault type is not included.

According to some embodiments of the present invention, before the comparing according to the first current difference value and the preset target current deviation threshold value, the method further includes obtaining the target current deviation threshold value, which specifically includes:

acquiring battery state parameters of the battery;

screening a preset reference current deviation threshold according to the battery state parameters to obtain a deviation threshold screening result;

and if the deviation threshold screening result indicates that the state parameter corresponding to the reference current deviation threshold is the same as the battery state parameter, taking the reference current deviation threshold as the target current deviation threshold.

According to an embodiment of the second aspect of the present invention, a current detection device includes:

the sampling current acquisition module is used for acquiring a sampling current value of the battery and an equipment current accumulated value of target high-voltage equipment;

the difference value calculation module is used for carrying out difference value calculation according to the sampling current value and the equipment current accumulated value to obtain a first current difference value;

the current comparison module is used for comparing the first current difference value with a preset target current deviation threshold value to obtain a current comparison result;

the maximum current acquisition module is used for acquiring a maximum current accumulated value of the target voltage equipment according to the current comparison result;

the current detection module is used for detecting the current according to the maximum current accumulated value and a preset current safety threshold.

The current detection device provided by the embodiment of the invention has at least the following beneficial effects: the current detection device corresponds to the current detection method, and can detect the current through current deviation judgment and current safety judgment under the condition that only one current sensor is needed to acquire the adopted current value, so that the reliability of current detection is improved.

An electronic device according to an embodiment of a third aspect of the present invention includes:

at least one memory;

at least one processor;

at least one computing program;

the computing program is stored in the memory, and the processor executes the at least one computing program to implement the current detection method of the embodiment of the first aspect described above.

A computer readable storage medium according to an embodiment of a fourth aspect of the present invention includes:

the computer-readable storage medium stores computer-executable instructions for causing a computer to perform the current detection method of the embodiment of the first aspect described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a block flow diagram of a first embodiment of a current detection method according to the present invention;

FIG. 2 is a block diagram of a battery management device, a battery, a target high voltage device according to an embodiment of the present invention;

FIG. 3 is a flowchart of a first specific method of step S110 in FIG. 1;

FIG. 4 is a flow chart of a second specific method of step S110 in FIG. 1;

FIG. 5 is a flow chart of a second embodiment of the current detection method of the present invention;

FIG. 6 is a flowchart of a specific method of step S140 in FIG. 1;

FIG. 7 is a flow chart of a third embodiment of the current detection method of the present invention;

FIG. 8 is a flowchart of a specific method of step S720 in FIG. 7;

FIG. 9 is a flowchart of a specific method of step S820 in FIG. 8;

FIG. 10 is a block diagram of a current detecting device according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.

Reference numerals:

the system comprises a sampling current acquisition module 110, a difference calculation module 120, a current comparison module 130, a maximum current acquisition module 140, a current detection module 150, a processor 210, a memory 220, an input/output interface 230, a communication interface 240 and a bus 250.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.

Based on this, the embodiment of the invention provides a current detection method, a current detection device, an electronic device and a storage medium, which can improve the reliability of current detection.

As shown in fig. 1, an embodiment of the present invention provides a current detection method applied to a battery management device for electrically connecting with a battery, a target high-voltage device, respectively. The current detection method includes, but is not limited to, steps S110 to S150, and the following describes the five steps in detail.

Step S110: acquiring a sampling current value of a battery and an equipment current accumulated value of target high-voltage equipment;

step S120: performing difference calculation according to the sampling current value and the equipment current accumulated value to obtain a first current difference value;

step S130: comparing according to the first current difference value and a preset target current deviation threshold value to obtain a current comparison result;

step S140: obtaining a maximum current accumulated value of the target voltage equipment according to the current comparison result;

step S150: and detecting the current according to the maximum current accumulated value and a preset current safety threshold.

As shown in fig. 2, in the following embodiments, the battery management device includes: the main control module, the sampling module, the current sensor and the diagnosis module are exemplified. The main control module is respectively and electrically connected with the sampling module, the diagnosis module and the target high-voltage equipment, the sampling module is also respectively and electrically connected with the current sensor and the diagnosis module, and the current sensor is also electrically connected with the battery. The main control module can execute the current detection method, the battery can be a vehicle-mounted energy storage battery, and the battery supplies power to the battery management equipment and the target high-voltage equipment respectively. It is understood that the battery management device including other functional modules should fall within the scope of the embodiments of the present invention.

The current detection method provided by the embodiment of the invention has at least the following beneficial effects: and carrying out difference value calculation on the acquired sampling current value and the equipment current accumulated value to obtain a first current difference value. The first current difference is compared with a target current deviation threshold to determine whether the sampled current deviates. And when the sampling current deviates, acquiring a maximum current accumulated value, and carrying out current detection on the maximum current accumulated value and a current safety threshold value, so as to judge whether the battery management equipment has safety risks. The current detection method of the embodiment only needs to use one current sensor to acquire the adopted current value, and then carries out current detection through current deviation judgment and current safety judgment, thereby improving the reliability of current detection and further improving the safety of a battery management system.

In step S110 of some embodiments, the current sensor converts the current of the battery into a sampable signal, and the sampling module samples the battery current to obtain a sampled current value and sends the sampled current value to the main control module. The target voltage equipment CAN communicate data with the main control module through a control local area network bus (Controller Area Network, CAN), and the target voltage equipment sends an equipment current accumulated value to the main control module. Wherein the target high voltage device may include: at least one module of a direct current power supply conversion module, a vehicle heating module, a motor controller and the like, and the accumulated value of the equipment current is the accumulated value of all module currents in the target high-voltage equipment.

As shown in fig. 3, in some embodiments of the present invention, step S110 includes, but is not limited to, step S310 and step S320, which are described in detail below.

Step S310: sampling fault detection is carried out according to a preset fault type, and a fault judgment result is obtained;

step S320: and if the fault judgment result indicates that the sampling is normal, acquiring a sampling current value.

In step S310 of some embodiments, the main control module performs sampling fault detection on the sampling module through the diagnostic module, and determines whether the sampling module has a preset fault type, so as to obtain a fault determination result. The preset fault types include: the sampling module has faults that influence sampling precision, such as reference voltage offset, uncontrolled circuit of the sampling module and the like.

In step S320 of some embodiments, when the fault judgment result indicates that the sampling module samples normally, it indicates that the sampling precision of the sampling module is normal, and at this time, the main control module may directly obtain the sampling current value sent by the sampling module.

As shown in fig. 4, in some embodiments of the present invention, step S110 further includes, but is not limited to, step S410 and step S420, which are described in detail below.

Step S410: if the fault judgment result indicates that the sampling is abnormal, primarily reducing the working power of the equipment;

step S420: step S310 is executed again until the failure determination result indicates that the sampling is normal.

In step S410 of some embodiments, when the fault determination result indicates that the sampling module samples abnormality, it indicates that the sampling accuracy of the sampling module is low, and the sampling current value sampled by the sampling module is inaccurate. At this time, the main control module generates a power degradation control instruction and sends the power degradation control instruction to other functional modules in the battery management equipment, so that the overall working power of the battery management equipment is reduced. The mode for reducing the working power comprises the following steps: the high-voltage power-up of each module in the battery management device is prohibited, the power discharge, the power charge, and the like of each module in the battery management device are restricted.

In step S420 of some embodiments, after the overall working power of the battery management device is reduced, the main control module performs sampling fault detection on the sampling module through the diagnostic module again, so as to determine whether the sampling module still has an abnormality. If the fault type still exists, the operation of reducing the working power is performed again; when the fault judgment result indicates that the fault type does not exist, the main control module can acquire the sampling current value sent by the sampling module.

In step S120 of some embodiments, after the master control module obtains the sampled current value and the device current accumulated value, the local current value integrated by each module of the battery management device is first calculated according to the sampled current value. Then, the local current value and the device current accumulated value are subtracted, and the absolute value of the operation result is taken, so that a first current difference value is obtained.

As shown in fig. 5, in some embodiments of the present invention, the current detection method further includes obtaining a target current deviation threshold before step S130, specifically including but not limited to steps S510 to S530, which are described in detail below.

Step S510: acquiring battery state parameters of a battery;

step S520: screening a preset reference current deviation threshold according to the battery state parameters to obtain a deviation threshold screening result;

step S530: and if the deviation threshold screening result shows that the state parameter corresponding to the reference current deviation threshold is the same as the battery state parameter, taking the reference current deviation threshold as the target current deviation threshold.

In step S510 of some embodiments, the battery state parameters include parameters that can reflect the battery operation conditions, such as a battery state of charge parameter, a temperature parameter, and a battery capacity parameter. The battery state parameter may be obtained by means of manual input by a touch device such as a mouse, or by means of a battery state obtaining module provided in the battery management device.

In step S520 of some embodiments, after the battery state parameter is obtained, the battery state parameter may be compared with a preset state parameter-current deviation threshold corresponding table in a table look-up manner, and it is determined whether the state parameter corresponding to the reference current deviation threshold is the same as the battery state parameter in the corresponding table.

In step S530 of some embodiments, if a current deviation threshold value corresponding to the same state parameter as the battery state parameter can be found from the correspondence table, the threshold value is taken as the target current deviation threshold value. The target current deviation threshold value can determine whether there is a deviation in the operating current of the battery management apparatus as a whole.

In step S130 of some embodiments, after the first current difference is calculated, the first current difference is compared with the target current deviation threshold, so as to obtain a current comparison result, so as to determine whether the working current of the battery management device as a whole has a deviation.

In step S140 of some embodiments, it may be preliminarily determined whether the battery management device has a safety risk due to the current abnormality according to the current comparison result. And if the preliminary judgment is that the safety risk possibly exists, acquiring the maximum current accumulated value of the target high-voltage equipment so as to further detect the current.

Step S140 is described in detail below. As shown in fig. 6, in some embodiments of the present invention, step S140 includes, but is not limited to, step S610 and step S620, which are described in detail below.

Step S610: if the current comparison result shows that the first current difference value is larger than the target current deviation threshold value, acquiring a maximum current accumulated value of the target voltage equipment;

step S620: and if the current comparison result shows that the first current difference value is smaller than or equal to the target current deviation threshold value, generating current normal information.

In step S610 of some embodiments, when the current comparison result indicates that the first current difference value is greater than the target current deviation threshold, it indicates that there is a deviation in the operating current of the battery management device as a whole, that is, that the battery management device may have a safety risk due to the excessive operating current. At this time, the maximum current accumulated value of the target voltage device needs to be obtained to further evaluate the safety risk. The maximum current value is the highest theoretical current value of the target high-voltage equipment, which ensures that no fault occurs, and the maximum current accumulated value is the accumulated value of the maximum current values of all modules in the target high-voltage equipment.

In step S620 of some embodiments, when the current comparison result indicates that the first current difference value is smaller than the target current deviation threshold, it indicates that the operating current of the battery management device as a whole is not deviated, that is, the battery management device may operate safely and effectively. At this time, the main control module generates current normal information and waits for executing the above step S110 again to perform a new current detection.

In step S150 of some embodiments, after the maximum current accumulated value is obtained, the maximum current accumulated value is compared with a preset current safety threshold, so as to implement final current detection. The current safety threshold is a threshold obtained by simulating and testing the battery management equipment in advance according to parameters such as battery charging state parameters, temperature parameters and battery capacity parameters of the battery and the like capable of reflecting the working condition of the battery. When the maximum current accumulated value is smaller than or equal to the current safety threshold value, the current is normal, and the battery management device can still safely and effectively work, so that safety risks are avoided. When the maximum current accumulated value is larger than the current safety threshold, the current is abnormal, and the battery management equipment has safety risks due to overlarge working current, and faults can occur at any time if the battery management equipment continues to work.

As shown in fig. 7, in some embodiments of the present invention, the current detection method further includes, but is not limited to, step S710 and step S720, which are described in detail below.

Step S710: if the current detection result shows that the maximum current accumulated value is smaller than or equal to the current safety threshold value, entering an early warning state;

step S720: and if the current detection result shows that the maximum current accumulated value is larger than the current safety threshold, reducing the working power of the equipment.

In step S710 of some embodiments, when the current detection result indicates that the maximum current accumulated value is less than or equal to the current safety threshold, it indicates that the current is normal, and although the battery management device can still operate safely and effectively, there is no safety risk, the overall operating current of the battery management device is already offset according to the current comparison result. Therefore, the main control module generates an early warning instruction at this time and sends the early warning instruction to other functional modules in the battery management equipment so that the battery management equipment enters an early warning state, thereby reminding the reason that the working current deviation needs to be checked.

In step S720 of some embodiments, when the current detection result indicates that the maximum current accumulated value is greater than the current safety threshold, it indicates that the current is abnormal, and the battery management device has a safety risk due to an excessive operating current, and the operating power of the battery management device needs to be reduced.

Step S720 is described in detail below. As shown in fig. 8, in some embodiments of the present invention, step S720 includes, but is not limited to, step S810 and step S820, which are described in detail below.

Step S810: if the current detection result shows that the maximum current accumulated value is larger than the current safety threshold, calculating a difference value according to the maximum current accumulated value and the current safety threshold to obtain a second current difference value;

step S820: and performing power reduction operation according to the second current difference value, and executing step S110 again until the current detection result shows that the maximum current accumulated value is smaller than or equal to the current safety threshold value.

In step S810 of some embodiments, when the result of the current detection indicates a current anomaly, a second current difference value is calculated according to the maximum current accumulated value, the current safety threshold value. If the maximum current accumulated value is Am and the current safety threshold Ar is set, the second current difference value is ((Am-Ar)/Ar) ×100%. It can be seen that the second current difference value can represent a magnitude of a numerical difference between the maximum current accumulation value and the current safety threshold.

In step S820 of some embodiments, after the second current difference is calculated, the operating power of the battery management device is reduced according to the second current difference, thereby reducing the operating current of the battery management device as a whole. After the operation of reducing the working power is completed, the sampling current value and the device current accumulated value are obtained again, and the current detection flow of the steps S110 to S150 is carried out again, so that the current detection result is confirmed to indicate that the current is normal, and the risk of faults of the battery management device is reduced.

As shown in fig. 9, in some embodiments of the present invention, step S820 includes, but is not limited to, steps S910 to S930, which are described in detail below.

Step S910: if the second current difference value is within a preset first difference value range, performing power reduction operation according to a preset first value;

step S920: if the second current difference value is within a preset second difference value range, performing power reduction operation according to a preset second value; wherein the minimum range value of the second difference range is larger than the maximum range value of the first difference range, and the second value is larger than the first value;

step S930: if the second current difference value is within a preset third difference value range, performing power reduction operation according to a preset third value; the minimum range value of the third difference range is larger than the maximum range value of the second difference range, and the third value is larger than the second value.

The relationship between the first difference range, the second difference range, the third difference range, and the corresponding reduced operating power may be referred to table 1 below.

Table 1:

	difference range	Treatment measures
			First difference range	Less than 10%	The working power is reduced by 20 percent
Second difference range	Greater than or equal to 10 percent and less than 20 percent	The working power is reduced by 50 percent
			Third difference range	Greater than or equal to 20%	The working power is reduced by 100 percent

In step S910 of some embodiments, when the second current difference is within the first difference range, the operating power of the battery management device is reduced according to the first value. The first value may be in the form of a power value (e.g., 50 kw), or in the form of a percentage (20%). Wherein, when in the form of power value, the power of the first value is reduced, or the working power is reduced to the first value; when in percentage form, it may be a percentage of the power that is reduced by a first value, or the operating power is reduced to a first value. For example, referring to table 1, the first difference range corresponds to the second current difference value "less than 10%", at which time the operating power of the battery management device is reduced by 20%.

In step S920 of some embodiments, the second value is greater than the first value, and the minimum range value of the second difference range is greater than the maximum range value of the first difference range. When the second current difference is within the second difference range, it is indicated that the operating current of the battery management device exceeds the current safety threshold to a greater extent, and therefore it is necessary to reduce the operating power of the battery management device according to the second value. The second value may be in the form of a power value (e.g., 100 kw) or in the form of a percentage (e.g., 50%). Wherein, when in the form of a power value, the power of the second value is reduced, or the working power is reduced to the second value; when in percentage form, it may be a percentage that reduces the power of the second value percentage, or reduces the operating power to the second value percentage. For example, referring to table 1, the second difference range corresponds to the second current difference value "greater than or equal to 10% and less than 20%", at which time the operating power of the battery management device is reduced by 50%.

In step S930 of some embodiments, the third value is greater than the second value, and the minimum range value of the third difference range is greater than the maximum range value of the second difference range. When the second current difference is within the third difference range, it is indicated that the operating current of the battery management device exceeds the current safety threshold to a greater extent than in the case of step S920, and therefore it is necessary to reduce the operating power of the battery management device according to the third value. The third value may be in the form of a power value or in the form of a percentage (e.g., 100%). Wherein, when the power is in the form of a power value, the power of the third value is reduced, or the working power is reduced to the third value; when in percentage form, it may be a percentage that reduces the power by a third value or reduces the operating power to a third value. For example, referring to table 1, the third difference range corresponds to the second current difference value "greater than 20%", at which time the operating power of the battery management device is reduced to 0, i.e., reduced to the third power. At this time, the battery management apparatus stops operating and enters an alarm state to indicate that the maintenance of the fault is required immediately.

As shown in fig. 10, an embodiment of the present invention further provides a current detection apparatus, including:

a sampling current obtaining module 110, configured to obtain a sampling current value of the battery and an accumulated device current value of the target high-voltage device;

the difference calculating module 120 is configured to perform difference calculation according to the sampled current value and the device current accumulated value to obtain a first current difference value;

the current comparison module 130 is configured to compare according to the first current difference value and a preset target current deviation threshold value, and obtain a current comparison result;

the maximum current acquisition module 140 is used for acquiring a maximum current accumulated value of the target voltage device according to the current comparison result;

the current detection module 150 is configured to perform current detection according to the maximum current accumulated value and a preset current safety threshold.

Therefore, the content of the current detection method embodiment is applicable to the current detection device embodiment, and the functions of the current detection device embodiment are the same as those of the current detection method embodiment, and the achieved beneficial effects are the same as those of the current detection method embodiment.

An electronic device according to an embodiment of the present invention is described in detail below with reference to fig. 11.

As shown in fig. 11, fig. 11 illustrates a hardware structure of an electronic device of another embodiment, the electronic device includes:

the processor 210 may be implemented by a general-purpose central processing unit (Central Processing Unit, CPU), a microprocessor, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the embodiments of the present disclosure;

the Memory 220 may be implemented in the form of a Read Only Memory (ROM), a static storage device, a dynamic storage device, or a random access Memory (Random Access Memory, RAM). Memory 220 may store an operating system and other application programs, and when implementing the technical solutions provided by the embodiments of the present disclosure through software or firmware, relevant program codes are stored in memory 220 and invoked by processor 210 to perform the current detection method of the embodiments of the present disclosure;

an input/output interface 230 for implementing information input and output;

the communication interface 240 is configured to implement communication interaction between the present device and other devices, and may implement communication in a wired manner (e.g. USB, network cable, etc.), or may implement communication in a wireless manner (e.g. mobile network, WIFI, bluetooth, etc.);

bus 250 transfers information between the various components of the device (e.g., processor 210, memory 220, input/output interface 230, and communication interface 240);

wherein processor 210, memory 220, input/output interface 230, and communication interface 240 are communicatively coupled to each other within the device via bus 250.

Embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the current detection method as described in any of the above embodiments.

It can be seen that the foregoing embodiments of the current detection method are applicable to the embodiments of the computer-readable storage medium, and the functions of the embodiments of the computer-readable storage medium are the same as those of the embodiments of the current detection method, and the beneficial effects achieved by the embodiments of the current detection method are the same as those achieved by the embodiments of the current detection method.

The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Those of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.

The terms "first," "second," "third," "fourth," and the like in the description of the invention and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present invention, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including multiple instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, an optical disk, or other various media capable of storing a program.

Preferred embodiments of the disclosed embodiments are described above with reference to the accompanying drawings, and thus do not limit the scope of the claims of the disclosed embodiments. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present disclosure shall fall within the scope of the claims of the embodiments of the present disclosure.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A current detection method, characterized by being applied to a battery management device for electrically connecting with a battery, a target high-voltage device, respectively, the current detection method comprising:

2. The current detection method according to claim 1, wherein the obtaining the maximum current accumulated value of the target voltage device according to the current comparison result includes:

3. The current detection method according to claim 2, characterized in that the current detection method further comprises:

4. A method according to claim 3, wherein said reducing the operating power of the device if the result of said current detection indicates that said maximum current accumulation value is greater than said current safety threshold value comprises:

5. The method according to claim 1, wherein the obtaining the sampled current value of the battery includes:

6. The method of claim 5, wherein the obtaining the sampled current value of the battery further comprises:

7. The current detection method according to any one of claims 1 to 6, wherein before the comparing according to the first current difference value and a preset target current deviation threshold value, the method further comprises obtaining the target current deviation threshold value, specifically including:

acquiring battery state parameters of the battery;

8. The current detection device is characterized by comprising:

9. An electronic device, comprising:

at least one memory;

at least one processor;

at least one computer program;

the computer program is stored in the memory, the processor executing the at least one computer program to implement the current detection method of any one of claims 1 to 7.

10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the current detection method according to any one of claims 1 to 7.