CN111596248A - Current collecting fault judgment method, device and equipment for current divider and storage medium - Google Patents
Current collecting fault judgment method, device and equipment for current divider and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of electric automobiles, in particular to a current acquisition fault judgment method, a current acquisition fault judgment device, current acquisition fault judgment equipment and a storage medium of a current divider. The method comprises the following steps: detecting the charging and discharging state of an automobile battery, and acquiring the electric energy information of the automobile battery; acquiring corresponding preset conditions according to the charge and discharge states; and detecting the electric energy information according to the preset condition, and judging whether a current acquisition fault of the current divider exists according to a detection result. By the method, whether the current collection of the shunt is in fault or not is judged, the problem that the current value collected by the shunt deviates from the actual value and cannot be found is avoided, and errors caused by the fact that the current value deviating from the actual value is used in the charge state estimation of the automobile battery are prevented.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a current acquisition fault judgment method, a current acquisition fault judgment device, current acquisition fault judgment equipment and a storage medium of a current divider.
Background
In the charging (slow charging or fast charging) process and the discharging process of the electric Vehicle, a BMS (battery management system) can be used for acquiring a current value, and a BMS or a VCU (Vehicle control unit) can be used for calculating a State of charge (State of charge) of the SOC (State of charge for reflecting the remaining battery capacity).
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for judging a current acquisition fault of a current divider, and aims to solve the technical problem of SOC estimation errors caused by the lack of current acquisition fault judgment of the current divider.
In order to achieve the above object, the present invention provides a method for judging a current collection fault of a current divider, where the method includes:
detecting the charging and discharging state of an automobile battery, and acquiring the electric energy information of the automobile battery;
acquiring corresponding preset conditions according to the charge and discharge states;
and detecting the electric energy information according to the preset condition, and judging whether a current acquisition fault of the current divider exists according to a detection result.
Preferably, the step of detecting a charge-discharge state of the automobile battery and acquiring electric energy information of the automobile battery specifically includes:
detecting the charge and discharge state of an automobile battery;
and acquiring current information and voltage information of the automobile battery and discharge current of a charger corresponding to the automobile battery in real time, and taking the current information, the voltage information and the discharge current as electric energy information.
Preferably, the preset condition comprises a first preset condition;
the step of obtaining the corresponding preset condition according to the charge and discharge state specifically includes:
when the automobile battery is in a discharging state, acquiring the first preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting current information and voltage information of the automobile battery according to the first preset condition;
and when the detection result meets the first preset condition, judging that a current acquisition fault of the current divider exists.
Preferably, the first preset condition is that the discharge voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and the discharge current difference of the automobile battery is less than or equal to a preset current threshold value.
Preferably, the preset condition comprises a second preset condition;
when the automobile battery is in a quick charging state, acquiring the second preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting current information and voltage information of the automobile battery according to the second preset condition;
and when the detection result meets the second preset condition, judging that a current acquisition fault of the current divider exists.
Preferably, the preset condition comprises a third preset condition;
the step of obtaining the corresponding preset condition according to the charge and discharge state specifically includes:
when the automobile battery is in a slow charging state, acquiring the third preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting the charging current of the automobile battery and the discharging current of the charger according to the third preset condition;
and when the detection result meets the third preset condition, judging that a current acquisition fault of the current divider exists.
Preferably, the third preset condition is that the difference between the discharge current of the charger and the charging current of the automobile battery is greater than or equal to a preset current threshold.
In addition, in order to achieve the above object, the present invention further provides a current collection fault determining apparatus for a current divider, including: the fault judgment method comprises a memory, a processor and a current divider current acquisition fault judgment program which is stored on the memory and can run on the processor, wherein the current divider current acquisition fault judgment program is configured to realize the steps of the current divider current acquisition fault judgment method.
In addition, in order to achieve the above object, the present invention further provides a storage medium, in which a shunt current collection fault determination program is stored, and the shunt current collection fault determination program implements the steps of the shunt current collection fault determination method when executed by a processor.
The method comprises the steps of detecting the charging and discharging states of the automobile battery and acquiring the electric energy information of the automobile battery; acquiring corresponding preset conditions according to the charge and discharge states; and detecting the electric energy information according to the preset condition, and judging whether a current acquisition fault of the current divider exists according to a detection result. By the method, whether the current collection of the shunt is in fault or not is judged, the problem that the current value collected by the shunt deviates from the actual value and cannot be found is avoided, and errors caused by the fact that the current value deviating from the actual value is used in the charge state estimation of the automobile battery are prevented.
Drawings
Fig. 1 is a schematic structural diagram of a current divider current collection fault determination device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a current collection fault determination method for a current divider according to the present invention;
FIG. 3 is a schematic flow chart illustrating a current collection fault determination method for a current divider according to a second embodiment of the present invention;
fig. 4 is a block diagram showing the structure of a first embodiment of the current collection failure determination device of the shunt according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a current collection fault determination device for a current divider in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the shunt current collection fault determination device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the shunt current collection fault determination device and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a shunt current collection failure determination program.
In the shunt current collection fault judgment device shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the current divider current collection fault determination device according to the present invention may be provided in the current divider current collection fault determination device, and the current divider current collection fault determination device calls the current divider current collection fault determination program stored in the memory 1005 through the processor 1001 and executes the current divider current collection fault determination method according to the present invention.
An embodiment of the present invention provides a method for determining a current collection fault of a shunt, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the method for determining a current collection fault of a shunt according to the present invention.
It should be noted that the execution subject in the embodiment of the present invention is an electric vehicle, a battery management system or a vehicle control unit is disposed in the electric vehicle, a current value is collected by the battery management system through the shunt, and whether current collection of the shunt fails is determined by determining whether an abnormal phenomenon exists in the electric energy information.
In this embodiment, the current collection fault determination method for the current divider includes the following steps:
step S10: and detecting the charge-discharge state of the automobile battery, and acquiring the electric energy information of the automobile battery.
Step S10 specifically includes: detecting the charge and discharge state of an automobile battery; and acquiring current information and voltage information of the automobile battery and discharge current of a charger corresponding to the automobile battery in real time, and taking the current information, the voltage information and the discharge current as electric energy information.
It is easy to understand that the acquired current information, the acquired voltage information and the acquired discharge current are acquired in real time and continuously acquired, a corresponding relation of time-electric energy information can be formed and stored in the battery management system, or the corresponding relation of the time-electric energy information can be sent to a remote management platform or an experiment platform, so that developers or technicians can acquire and record the electric energy information of the automobile battery.
Step S20: and acquiring corresponding preset conditions according to the charge and discharge states.
Step S20 specifically includes: and when the automobile battery is in a discharging state, acquiring the first preset condition.
It should be noted that the first preset condition is that the discharge voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and the discharge current difference of the automobile battery is less than or equal to a preset current threshold value.
It is easy to understand that the car battery is in a discharging state, namely a state that the car is running or the car is stopped but not powered off, in the discharging state, the power is increased when the air conditioner is turned on or the car is accelerated, and the power supply source of each device in the car comes from the car battery, and under the condition that each device normally works, a large discharging current is not generated when the device is turned on or turned off.
It should be understood that, in the discharging state, as the power consumed by the electric vehicle changes, the difference between the maximum value and the minimum value of the discharging voltage of the vehicle battery (i.e., the discharging voltage difference) changes. In the case of a whole vehicle, the discharge current increases as the discharge voltage increases, the discharge current decreases as the discharge voltage decreases, and if the discharge voltage difference is greater than the preset voltage threshold, the discharge current difference (the difference between the maximum value and the minimum value of the discharge current) should also be greater than the preset current threshold. If the discharge voltage difference is larger than a preset voltage threshold value and the interval between the maximum value and the minimum value is smaller than or equal to preset time, but the discharge current difference is smaller than or equal to the preset current threshold value at the same time, the acquired current value is abnormal, and then the current acquired by the current divider fails.
Step S30: and detecting the electric energy information according to the preset condition, and judging whether a current acquisition fault of the current divider exists according to a detection result.
Step S30 specifically includes: detecting current information and voltage information of the automobile battery according to the first preset condition; and when the detection result meets the first preset condition, judging that a current acquisition fault of the current divider exists.
In a specific implementation, the preset time may be set to 5 minutes, the preset voltage threshold may be set to 10V, and the preset current threshold may be set to 5A. For example: the difference between the maximum value and the minimum value of the discharge voltage value acquired within 5 minutes of the preset time is greater than or equal to 10V, and the difference between the maximum value and the minimum value of the discharge current value is less than or equal to 5A, so that a current acquisition fault of the current divider exists; within the preset time of 5 minutes, the difference between the maximum value and the minimum value of the discharge voltage value is less than 10V, and the difference between the maximum value and the minimum value of the discharge current value is also less than or equal to 5A, so that the current collection of the current divider is normal.
It should be noted that the preset conditions include a first preset condition, a second preset condition and a third preset condition, and the three preset conditions do not interfere with each other because they correspond to different states respectively.
Step S20 specifically includes: and when the automobile battery is in a quick charging state, acquiring the second preset condition.
It should be noted that the second preset condition is that the charging voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and the charging current difference of the automobile battery is less than or equal to a preset current threshold value.
It should be noted that, in the charging process of the electric vehicle, if the air conditioner is turned on or the electric vehicle is powered on and powered off, the current value fluctuates, and at this time, the charging voltage difference is greater than or equal to the preset voltage threshold value and the charging current difference is less than or equal to the preset current threshold value, which cannot indicate that a current collection fault of the shunt exists.
It is easy to understand that the quick charge state is normal temperature charge, and the difference between the maximum value and the minimum value of the charge current is less than or equal to the preset current threshold value when the heating film is switched from on to off.
Step S30 specifically includes: detecting current information and voltage information of the automobile battery according to the second preset condition; and when the detection result meets the second preset condition, judging that a current acquisition fault of the current divider exists.
In specific implementations, for example: and judging that the current acquisition fault of the current divider occurs currently if the charging voltage difference is greater than or equal to a preset voltage threshold value by 10V and the charging current difference is less than or equal to a preset current threshold value by 5A within a preset time of 5 minutes, and the switching of the opening and closing of an air conditioner of the electric automobile, the change of power-on and power-off and the over-low temperature are not carried out within the preset time of 5 minutes.
It is easy to understand that, when shunt current collection trouble has appeared at present, electric automobile accessible display or panel board feed back to the driver, also can feed back to vehicle management platform through the car networking, or feed back to the host computer in electric automobile's experiment to make development personnel or technical staff in time discover the trouble.
According to the embodiment of the invention, the judgment of the current collection fault of the current divider is carried out on the electric automobile by setting the preset conditions corresponding to different working states of the automobile battery, so that whether the current collection of the current divider has the fault can be judged easily and rapidly.
Referring to fig. 3, fig. 3 is a schematic flow chart of a current collection fault determination method of a current divider according to a third embodiment of the present invention. Based on the first embodiment, in the step S20, the method for determining a current collection fault of a shunt according to this embodiment specifically includes:
step S21: and when the automobile battery is in a slow charging state, acquiring the third preset condition.
It should be noted that the third preset condition is that the difference between the discharge current of the charger and the charge current of the automobile battery is greater than or equal to a preset current threshold.
It is easy to understand that the charger can be charging equipment such as a charging pile and a wireless charger, and the discharging current of the charger can be obtained through current detection equipment loaded on the charger or directly obtained through an electric automobile.
It is easy to understand that, in the slow charging process, the charger outputs a discharging current to the electric vehicle, and a battery of the electric vehicle acquires a charging current, and the charging current has partial loss in the conversion process but is basically consistent with the discharging current output by the charger. Normally, the charging current increases with the increase of the discharging current, the charging current decreases with the decrease of the discharging current, and the current difference between the charging current and the discharging current is smaller than or equal to a preset current threshold.
Step S30 specifically includes:
step S31: and detecting the charging current of the automobile battery and the discharging current of the charger according to the third preset condition.
Step S32: and when the detection result meets the third preset condition, judging that a current acquisition fault of the current divider exists.
It should be understood that, in the slow charging state, the same influences of the factors such as the turning on or off of the air conditioner, the power-on/power-off conversion, the temperature change, and the like of the electric vehicle as described in the first embodiment also exist, and when the above influences occur, the difference between the discharging current and the charging current is equal to or greater than the preset current threshold, which cannot indicate that the current collection of the shunt has a fault.
In specific implementations, for example: in a slow charging state, when the current temperature is at normal temperature, a driver closes an air conditioner, and the difference between the discharging current of a charger and the charging current of an automobile battery is larger than or equal to a preset current threshold value, the current acquisition fault of a current divider cannot be determined; however, the air conditioner does not perform switching, the electric vehicle does not perform power-on and power-off, and if the difference between the discharging current of the charger and the charging current of the vehicle battery is greater than or equal to the preset current threshold value, it is determined that a current acquisition fault of the current divider occurs currently.
According to the embodiment of the invention, the judgment condition of the current collection fault of the current divider in the slow charging state of the automobile is set, and the current collection fault of the current divider can be rapidly found in a simpler mode, so that the fault can be eliminated as soon as possible, and the accuracy of the battery management system for estimating the state of charge is improved.
Referring to fig. 4, fig. 4 is a block diagram illustrating a structure of a current collection fault determination device of a current divider according to a first embodiment of the present invention. As shown in fig. 4, the apparatus according to the embodiment of the present invention includes a detecting module 10, a selecting module 20, and a determining module 30.
It should be noted that the execution subject in the embodiment of the present invention is an electric vehicle, a battery management system or a vehicle control unit is disposed in the electric vehicle, a current value is collected by the battery management system through the shunt, and whether current collection of the shunt fails is determined by determining whether an abnormal phenomenon exists in the electric energy information.
In this embodiment, the current collection fault determination method for the current divider includes the following steps:
the detection module 10 is configured to detect a charge-discharge state of an automobile battery, and acquire electric energy information of the automobile battery.
The inspection module 10 is specifically configured to detect a charge/discharge state of an automobile battery; and acquiring current information and voltage information of the automobile battery and discharge current of a charger corresponding to the automobile battery in real time, and taking the current information, the voltage information and the discharge current as electric energy information.
It is easy to understand that the acquired current information, the acquired voltage information and the acquired discharge current are acquired in real time and continuously acquired, a corresponding relation of time-electric energy information can be formed and stored in the battery management system, or the corresponding relation of the time-electric energy information can be sent to a remote management platform or an experiment platform, so that developers or technicians can acquire and record the electric energy information of the automobile battery.
The selection module 20 is configured to obtain a corresponding preset condition according to the charge and discharge state.
The selection module 20 is specifically configured to acquire the first preset condition when the automobile battery is in a discharge state.
It should be noted that the first preset condition is that the discharge voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and the discharge current difference of the automobile battery is less than or equal to a preset current threshold value.
It is easy to understand that the car battery is in a discharging state, namely a state that the car is running or the car is stopped but not powered off, in the discharging state, the power is increased when the air conditioner is turned on or the car is accelerated, and the power supply source of each device in the car comes from the car battery, and under the condition that each device normally works, a large discharging current is not generated when the device is turned on or turned off.
It should be understood that, in the discharging state, as the power consumed by the electric vehicle changes, the difference between the maximum value and the minimum value of the discharging voltage of the vehicle battery (i.e., the discharging voltage difference) changes. In the case of a whole vehicle, the discharge current increases as the discharge voltage increases, the discharge current decreases as the discharge voltage decreases, and if the discharge voltage difference is greater than the preset voltage threshold, the discharge current difference (the difference between the maximum value and the minimum value of the discharge current) should also be greater than the preset current threshold. If the discharge voltage difference is larger than a preset voltage threshold value and the interval between the maximum value and the minimum value is smaller than or equal to preset time, but the discharge current difference is smaller than or equal to the preset current threshold value at the same time, the acquired current value is abnormal, and then the current acquired by the current divider fails.
The judging module 30 is configured to detect the electric energy information according to the preset condition, and judge whether a current collection fault of the shunt exists according to a detection result.
The judging module 30 is specifically configured to detect current information and voltage information of the automobile battery according to the first preset condition; and when the detection result meets the first preset condition, judging that a current acquisition fault of the current divider exists.
In a specific implementation, the preset time may be set to 5 minutes, the preset voltage threshold may be set to 10V, and the preset current threshold may be set to 5A. For example: the difference between the maximum value and the minimum value of the discharge voltage value acquired within 5 minutes of the preset time is greater than or equal to 10V, and the difference between the maximum value and the minimum value of the discharge current value is less than or equal to 5A, so that a current acquisition fault of the current divider exists; within the preset time of 5 minutes, the difference between the maximum value and the minimum value of the discharge voltage value is less than 10V, and the difference between the maximum value and the minimum value of the discharge current value is also less than or equal to 5A, so that the current collection of the current divider is normal.
The selection module 20 is specifically configured to: and when the automobile battery is in a quick charging state, acquiring the second preset condition.
It should be noted that the second preset condition is that the charging voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and the charging current difference of the automobile battery is less than or equal to a preset current threshold value.
It should be noted that, in the charging process of the electric vehicle, if the air conditioner is turned on or the electric vehicle is powered on and powered off, the current value fluctuates, and at this time, the charging voltage difference is greater than or equal to the preset voltage threshold value and the charging current difference is less than or equal to the preset current threshold value, which cannot indicate that a current collection fault of the shunt exists.
It is easy to understand that the quick charge state is normal temperature charge, and the difference between the maximum value and the minimum value of the charge current is less than or equal to the preset current threshold value when the heating film is switched from on to off.
The judging module 30 is specifically configured to detect current information and voltage information of the automobile battery according to the second preset condition; and when the detection result meets the second preset condition, judging that a current acquisition fault of the current divider exists.
In specific implementations, for example: and judging that the current acquisition fault of the current divider occurs currently if the charging voltage difference is greater than or equal to a preset voltage threshold value by 10V and the charging current difference is less than or equal to a preset current threshold value by 5A within a preset time of 5 minutes, and the switching of the opening and closing of an air conditioner of the electric automobile, the change of power-on and power-off and the over-low temperature are not carried out within the preset time of 5 minutes.
It is easy to understand that, when shunt current collection trouble has appeared at present, electric automobile accessible display or panel board feed back to the driver, also can feed back to vehicle management platform through the car networking, or feed back to the host computer in electric automobile's experiment to make development personnel or technical staff in time discover the trouble.
The selection module 20 is specifically configured to obtain the third preset condition when the vehicle battery is in a slow charging state.
It should be noted that the third preset condition is that the difference between the discharge current of the charger and the charge current of the automobile battery is greater than or equal to a preset current threshold.
It is easy to understand that the charger can be charging equipment such as a charging pile and a wireless charger, and the discharging current of the charger can be obtained through current detection equipment loaded on the charger or directly obtained through an electric automobile.
It is easy to understand that, in the slow charging process, the charger outputs a discharging current to the electric vehicle, and a battery of the electric vehicle acquires a charging current, and the charging current has partial loss in the conversion process but is basically consistent with the discharging current output by the charger. Normally, the charging current increases with the increase of the discharging current, the charging current decreases with the decrease of the discharging current, and the current difference between the charging current and the discharging current is smaller than or equal to a preset current threshold.
The judging module 30 is specifically configured to detect the charging current of the automobile battery and the discharging current of the charger according to the third preset condition; and when the detection result meets the third preset condition, judging that a current acquisition fault of the current divider exists.
It should be understood that, in the slow charging state, the same influences of the factors such as the turning on or off of the air conditioner, the power-on/power-off conversion, the temperature change, and the like of the electric vehicle as described in the first embodiment also exist, and when the above influences occur, the difference between the discharging current and the charging current is equal to or greater than the preset current threshold, which cannot indicate that the current collection of the shunt has a fault.
In specific implementations, for example: in a slow charging state, when the current temperature is at normal temperature, a driver closes an air conditioner, and the difference between the discharging current of a charger and the charging current of an automobile battery is larger than or equal to a preset current threshold value, the current acquisition fault of a current divider cannot be determined; however, the air conditioner does not perform switching, the electric vehicle does not perform power-on and power-off, and if the difference between the discharging current of the charger and the charging current of the vehicle battery is greater than or equal to the preset current threshold value, it is determined that a current acquisition fault of the current divider occurs currently.
According to the embodiment of the invention, the judgment of the current collection fault of the current divider is carried out on the electric automobile by setting the preset conditions corresponding to different working states of the automobile battery, so that whether the current collection of the current divider has the fault can be judged easily and rapidly. The current collection fault judgment condition of the current divider in the slow charging state of the automobile is set, and the current collection fault of the current divider can be rapidly found in a simpler mode, so that the fault can be eliminated as soon as possible, and the accuracy of the battery management system for estimating the state of charge is improved.
In addition, an embodiment of the present invention further provides a storage medium, where a shunt current collection fault determination program is stored on the storage medium, and the shunt current collection fault determination program is executed by a processor to perform the steps of the shunt current collection fault determination method described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may be referred to a current collecting fault determining method of the current divider provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A current collection fault judgment method of a current divider is characterized by comprising the following steps:
detecting the charging and discharging state of an automobile battery, and acquiring the electric energy information of the automobile battery;
acquiring corresponding preset conditions according to the charge and discharge states;
and detecting the electric energy information according to the preset condition, and judging whether a current acquisition fault of the current divider exists according to a detection result.
2. The method for judging the current collection fault of the current divider according to claim 1, wherein the step of detecting the charge-discharge state of the automobile battery and acquiring the electric energy information of the automobile battery specifically comprises:
detecting the charge and discharge state of an automobile battery;
and acquiring current information and voltage information of the automobile battery and discharge current of a charger corresponding to the automobile battery in real time, and taking the current information, the voltage information and the discharge current as electric energy information.
3. The current divider current collection fault determination method according to claim 2, wherein the preset condition includes a first preset condition;
the step of obtaining the corresponding preset condition according to the charge and discharge state specifically includes:
when the automobile battery is in a discharging state, acquiring the first preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting current information and voltage information of the automobile battery according to the first preset condition;
and when the detection result meets the first preset condition, judging that a current acquisition fault of the current divider exists.
4. The current divider current collection fault judgment method according to claim 3, wherein the first preset condition is that a discharge voltage difference of the automobile battery is greater than or equal to a preset voltage threshold value within a preset time, and a discharge current difference of the automobile battery is less than or equal to a preset current threshold value.
5. The current divider current collection fault determination method according to claim 2, wherein the preset condition includes a second preset condition;
when the automobile battery is in a quick charging state, acquiring the second preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting current information and voltage information of the automobile battery according to the second preset condition;
and when the detection result meets the second preset condition, judging that a current acquisition fault of the current divider exists.
6. The current divider current collection fault determination method according to claim 2, wherein the preset condition includes a third preset condition;
the step of obtaining the corresponding preset condition according to the charge and discharge state specifically includes:
when the automobile battery is in a slow charging state, acquiring the third preset condition;
the step of detecting the electric energy information according to the preset condition and judging whether a current acquisition fault of the current divider exists according to a detection result specifically comprises the following steps:
detecting the charging current of the automobile battery and the discharging current of the charger according to the third preset condition;
and when the detection result meets the third preset condition, judging that a current acquisition fault of the current divider exists.
7. The method for determining the current collection fault of the current divider according to claim 6, wherein the third predetermined condition is that a difference between a discharge current of the charger and a charging current of the car battery is greater than or equal to a predetermined current threshold.
8. The utility model provides a shunt current acquisition fault judgment device which characterized in that, the device includes: the device comprises a detection module, a selection module and a judgment module; wherein the content of the first and second substances,
the detection module is used for detecting the charging and discharging state of the automobile battery and acquiring the electric energy information of the automobile battery;
the selection module is used for acquiring corresponding preset conditions according to the charge and discharge states;
and the judging module is used for detecting the electric energy information according to the preset condition and judging whether a current collecting fault of the current divider exists according to a detection result.
9. The utility model provides a shunt current acquisition fault judgement device which characterized in that, equipment includes: a memory, a processor, and a shunt current collection fault determination program stored on the memory and executable on the processor, the shunt current collection fault determination program configured to implement the steps of the shunt current collection fault determination method according to any one of claims 1 to 7.
10. A storage medium having stored thereon a shunt current collection failure judgment program which, when executed by a processor, realizes the steps of the shunt current collection failure judgment method according to any one of claims 1 to 7.
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