CN114301029A - Method and related device for judging short circuit position in charging circuit - Google Patents
Method and related device for judging short circuit position in charging circuit Download PDFInfo
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- CN114301029A CN114301029A CN202111651387.3A CN202111651387A CN114301029A CN 114301029 A CN114301029 A CN 114301029A CN 202111651387 A CN202111651387 A CN 202111651387A CN 114301029 A CN114301029 A CN 114301029A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The embodiment of the application discloses a method and a related device for judging a short-circuit position in a charging circuit, wherein the charging circuit comprises a primary side circuit, a transformer and an output circuit, and the method comprises the following steps: collecting a first current value of a primary side circuit and a second current value of an output circuit; judging whether the first current value is abnormal or not according to the magnitude of the first current value; if the first current value is abnormal, judging whether the first current value is abnormal or not to be associated with the second current value according to the magnitude of the second current value, if so, determining that the output circuit is short-circuited, and if not, determining that the primary circuit or the transformer is short-circuited. In the embodiment of the application, a first current value of a primary side circuit and a second current value of an output circuit are acquired, and a specific position of a short circuit of the charging circuit can be judged according to the magnitude of the first current value and the magnitude of the second current value.
Description
Technical Field
The present invention relates to the field of circuit technologies, and in particular, to a method and a related apparatus for determining a short-circuit position in a charging circuit.
Background
In the charging circuit, the charging circuit comprises a primary side circuit, a transformer and an output circuit, a certain voltage difference may exist between the voltage of the primary side circuit and the voltage of the output circuit, and at the moment, when the contactor is attracted, the primary side overcurrent may be caused. Under normal conditions, because the charging circuit has an inductor, the current rise speed in the primary side circuit is slow, and overcurrent protection can successfully protect the primary side circuit, but when the charging circuit has a fault and the primary side circuit or the transformer is in short circuit, if the primary side circuit is restarted, because the primary side circuit or the transformer is in short circuit, the current rise speed in the primary side circuit is very high, and components and the transformer in the primary side circuit are easily damaged.
In the prior art, when the current in the primary circuit is too fast, the short circuit of the charging circuit can be determined, but the short circuit position of the charging circuit cannot be determined.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a method and a related device for determining a short circuit position in a charging circuit, so that when a charging circuit fails, a specific short circuit position of the charging circuit can be determined.
In a first aspect, an embodiment of the present application provides a method for determining a short-circuit position in a charging circuit, where the charging circuit includes a primary side circuit, a transformer, and an output circuit, and the method includes:
collecting a first current value of a primary side circuit and a second current value of an output circuit;
judging whether the first current value is abnormal or not according to the magnitude of the first current value;
if the first current value is abnormal, judging whether the first current value is abnormal or not to be associated with the second current value according to the magnitude of the second current value, if so, determining that the output circuit is short-circuited, and if not, determining that the primary circuit or the transformer is short-circuited.
In a possible implementation manner, the determining whether the first current value is abnormal according to the magnitude of the first current value includes:
comparing the first current value with a primary current threshold value;
if the first current value is larger than or equal to the primary side current threshold value, obtaining that the first current value is abnormal;
and if the first current value is smaller than the primary current threshold value, obtaining that the first current value is normal.
In a possible implementation manner, after the obtaining of the first current value abnormality, the method further includes:
and controlling the primary side circuit to be powered off.
In a possible implementation manner, the determining whether the first current value abnormality is associated with the second current value according to the magnitude of the second current value includes:
comparing the second current value with the output current threshold value;
if the second current value is larger than or equal to the output current threshold value, determining that the first current value is abnormal and is associated with the second current value;
if the second current value is smaller than the output current threshold value, determining that the first current value is abnormal and is not associated with the second current value; when the charging circuit is in a fault-free condition, and the first current value is equal to the primary current threshold, the second current value is equal to the output current threshold.
In one possible implementation, when it is determined that the primary side circuit is short-circuited, the method further includes the steps of:
locking the primary circuit to inhibit the primary circuit from energizing over-current.
In one possible implementation, the determining that the output circuit is short-circuited includes:
controlling the primary side circuit to be electrified and overcurrent, and acquiring the times of the electrification and overcurrent of the primary side circuit;
judging whether the power-on overcurrent times are smaller than preset times, if so, determining that the output circuit uses a short circuit; if not, the output circuit is determined to be in fault short circuit.
In one possible implementation, when the output circuit is determined to use a short circuit, the primary side circuit is controlled to restart;
and when the output circuit is determined to be in fault short circuit, the primary side circuit is locked to prohibit the primary side circuit from being electrified and overcurrent.
In a second aspect, an embodiment of the present application provides an apparatus for determining a short-circuit position in a charging circuit, where the charging circuit includes a primary circuit, a transformer, and an output circuit, and the apparatus includes:
the acquisition module is used for acquiring a first current value of the primary side circuit and a second current value of the output circuit;
the judging module is used for judging whether the first current value is abnormal or not according to the magnitude of the first current value;
and the determining module is used for judging whether the first current value is abnormal and is associated with the second current value according to the magnitude of the second current value if the first current value is abnormal, determining that the output circuit is short-circuited if the first current value is abnormal, and determining that the primary circuit or the transformer is short-circuited if the first current value is not abnormal.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a storage and a processor, where the storage is used to store computer instructions, and the processor is used to call the computer instructions to execute the method described above.
In a fourth aspect, embodiments of the present application provide a computer storage medium storing computer instructions that, when executed by a processor, implement a method as described above.
According to the embodiment of the application, a first current value of a primary side circuit and a second current value of an output circuit are collected, whether the first current value is abnormal or not is determined according to the first current value, if the first current value is abnormal, whether the first current value is abnormal or not is judged according to the second current value, if the first current value is abnormal, the output circuit is determined to be short-circuited, and if the first current value is not abnormal, the primary side circuit or the transformer is determined to be short-circuited.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a circuit diagram of a charging circuit provided in an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for determining a short-circuit position in a charging circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an apparatus for determining a short-circuit position in a charging circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.
The terms "including" and "having," and any variations thereof, in the description and claims of this application and the drawings described above, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the charging circuit, the charging circuit comprises a primary side circuit, a transformer and an output circuit, a certain voltage difference may exist between the voltage of the primary side circuit and the voltage of the output circuit, and at the moment, when the contactor is attracted, the primary side overcurrent may be caused. Under normal conditions, because the charging circuit has an inductor, the current rise speed in the primary side circuit is slow, and overcurrent protection can successfully protect the primary side circuit, but when the charging circuit has a fault and the primary side circuit or the transformer is in short circuit, if the primary side circuit is restarted, because the primary side circuit or the transformer is in short circuit, the current rise speed in the primary side circuit is very high, and components and the transformer in the primary side circuit are easily damaged.
In the prior art, when the current in the primary circuit is too fast, the short circuit of the charging circuit can be determined, but the short circuit position of the charging circuit cannot be determined.
Referring to fig. 1, the charging circuit includes a primary circuit, a transformer, and an output circuit, and when the charging circuit operates, the primary circuit transmits electric energy to the output circuit through the transformer.
Referring to fig. 2, the present application provides a method for determining a short-circuit position in a charging circuit, the method includes, but is not limited to, the following steps:
s1, collecting a first current value of the primary circuit and a second current value of the output circuit;
in the embodiment provided by the present application, in a normal operation state of the primary side circuit 110, the magnitude of the first current value is affected by the magnitude of the second current value, and specifically, the larger the second current value is, the larger the first current value is.
And S2, judging whether the first current value is abnormal according to the magnitude of the first current value.
In the embodiment provided by the application, after the first current value is collected, whether the first current value is within a preset range is judged, if the first current value is within the preset range, it can be determined that the first current value is normal, and if the first current value is outside the preset range, it can be determined that the first current value is abnormal.
In the embodiment provided in the present application, when the first current value is normal, it may be determined that the charging circuit 100 is in a normal operating state, and at this time, it may be determined that the primary circuit 110, the transformer 120, and the output circuit 130 are in a normal operating state. When the first current value is abnormal, it may be determined that at least one of the primary circuit 110, the transformer 120, and the output circuit 130 is abnormal.
And S3, if the first current value is abnormal, judging whether the first current value is abnormal and is associated with the second current value according to the magnitude of the second current value, if so, determining that the output circuit is short-circuited, and if not, determining that the primary circuit or the transformer is short-circuited.
In the embodiment provided by the present application, when the primary side circuit 110 is in a normal operating state, the magnitude of the first current value is affected by the magnitude of the second current value, so that if the first current value is affected by the second current value and the first current value is abnormal, it can be determined that the primary side circuit 110 and the transformer 120 are not faulty, and the output circuit 130 is abnormal, otherwise, if the first current value is abnormal and the second current value are not related, it indicates that the reason that the first current value is abnormal is caused by the abnormality of the primary side circuit 110 or the transformer 120.
In an embodiment provided by the present application, it is specifically determined whether the first current value abnormality is associated with the second current value according to a magnitude of the second current value.
The judging whether the first current value is abnormal according to the magnitude of the first current value includes:
comparing the first current value with a primary current threshold value;
if the first current value is larger than or equal to the primary side current threshold value, obtaining that the first current value is abnormal;
and if the first current value is smaller than the primary current threshold value, obtaining that the first current value is normal.
The primary side current threshold is a set value, and the primary side current threshold can be set manually according to the actual situation of the charging circuit 100, in the embodiment provided by the present application, when the charging circuit 100 starts to charge, if the collected first current value is greater than or equal to the primary current threshold, determining that the first current value is abnormal, specifically, when the first current value is greater than or equal to the primary current threshold value, under the condition of no other external factors (such as voltage fluctuation), it can be determined that the reason for the first current value being equal to or greater than the primary current threshold is due to the charging circuit 100 being shorted, the short circuit of the charging circuit 100 may specifically include at least two situations, that is, the first current value is too large due to the short circuit of the primary circuit 110 or the short circuit of the transformer 120 (the first current value is greater than or equal to the primary current threshold); second, a short circuit of the output circuit 130 causes a second current value in the output circuit 130 to be excessive, and the second current value is excessive to cause the first current value to be excessive (the larger the second current value is, the larger the first current value is).
In the embodiment provided by the present application, if the acquired first current value is smaller than the primary current threshold, it is determined that the first current value is normal, and when the first current value is normal, it may be determined that the charging circuit 100 is in a normal operating state, and it may be obtained that the primary circuit 110, the transformer 120, and the output circuit 130 are all in a normal state.
After the first current value is obtained to be abnormal, the method further comprises the following steps:
controlling the primary side circuit 110 to be powered off.
In the embodiment provided by the present application, when it is determined that the first current value is abnormal, it may be obtained that the working state of the charging circuit 100 is abnormal, and to protect the charging circuit 100, the primary side circuit 110 is controlled to be disconnected, specifically, a switch is provided in the primary side circuit 110, and specifically, the switch is controlled to be disconnected, so that the primary side circuit 110 is disconnected.
And comparing the second current value with the output current threshold value when judging whether the first current value is abnormal and is associated with the second current value according to the second current value.
In the embodiment provided by the present application, the primary current threshold is artificially set according to an actual situation of the charging circuit 100, where the output current threshold is associated with the primary current threshold, specifically, when the first current value is equal to the primary current threshold, the second current value is equal to the output current threshold in the absence of a fault of the charging circuit 100.
And if the second current value is larger than or equal to the output current threshold value, determining that the first current value is abnormal and is associated with the second current value.
Specifically, when the primary side circuit 110 is not short-circuited, the first current value is determined by the second current value, the larger the second current value is, the larger the first current value is, since the second current value is greater than or equal to the output current threshold, it is indicated that the reason that the first current value is too large is caused by the second current value being too large, it can be obtained that the first current value is abnormal and is associated with the second current value, and further it can be obtained that the primary side circuit 110 is not short-circuited, and the reason that the second current value is too large may be that the output circuit 130 is short-circuited.
And if the second current value is smaller than the output current threshold value, determining that the first current value is abnormal and is not related to the second current value.
Specifically, the second current value is smaller than the threshold of the output circuit 130, which indicates that the output circuit 130 is not short-circuited, so that the reason that the first current value is too large is not that the output circuit 130 is short-circuited, and the reason that the first current value is too large is short-circuited of the primary side circuit 110 or short-circuited of the transformer 120 by excluding the short-circuited output circuit 130.
In the embodiment provided by the present application, when it is determined that the primary circuit 110 is short-circuited, the primary circuit 110 is locked to disable the primary circuit 110 from being powered on in order to protect components in the primary circuit 110.
When the output circuit 130 is determined to be short-circuited, the method includes:
controlling the primary side circuit 110 to be electrified and overcurrent, and acquiring the times of the primary side circuit 110 to be electrified and overcurrent;
judging whether the power-on overcurrent times are smaller than preset times, if so, determining that the output circuit 130 uses a short circuit; if not, the output circuit 130 is determined to be in fault short circuit.
In the embodiment provided by the present application, when the primary side circuit 110 is controlled to be powered on, the number of times of once power-on overcurrent is accumulated, specifically, when the charging circuit 100 is turned on, the number of times of once power-on overcurrent is recorded, after the first current value is obtained to be abnormal, the primary side circuit 110 is controlled to be powered off, when the output circuit 130 is determined to be short-circuited, the primary side circuit 110 is controlled to be powered on and overcurrent, the number of times of once power-on overcurrent is accumulated again, and at this time, the number of times of power-on overcurrent in the charging circuit 100 is accumulated to two times.
In the embodiment provided by the present application, in the case that the charging circuit 100 is in operation, the reason for the abnormality of the first current value may be accidental, for example, when the output circuit 130 uses a short circuit, the second current value is excessively high, and finally the first current value is excessively high.
Specifically, when it is determined that the cause of the first current value abnormality is the short circuit of the output circuit 130, it is obtained whether the number of times of current flowing through the primary side circuit 110 is less than or equal to a preset number of times, and if the number of times of current flowing through the primary side circuit is less than or equal to the preset number of times, it indicates that the first current value abnormality is caused by the short circuit of the output circuit 130, and if the number of times of current flowing through the primary side circuit is greater than the preset number of times, it indicates that the first current value abnormality is caused by the fault of the output circuit 130.
In the embodiment provided herein, the primary circuit 110 is controlled to restart when the output circuit 130 is identified as using a short circuit.
Specifically, when the primary circuit 110 is controlled to restart, the number of times of overcurrent of the primary circuit 110 may be assigned to zero.
In order to protect the output circuit 130 and the components connected to the output circuit 130, when the output circuit 130 is determined to be in a fault short circuit, the primary side circuit 110 is locked to prohibit the primary side circuit 110 from being energized and overcurrent, in the embodiment provided in the present application, when the primary side circuit 110 is prohibited from being energized and overcurrent, the primary side circuit 110 cannot be restarted, so that the charging circuit 100 is protected from secondary damage to the charging circuit 100.
Referring to fig. 3, an apparatus 200 for determining a short-circuit position in a charging circuit 100 is further provided, where the charging circuit 100 includes a primary circuit 110, a transformer 120, and an output circuit 130, and the apparatus 200 includes:
the acquisition module 210 is configured to acquire a first current value of the primary side circuit 110 and a second current value of the output circuit 130;
the judging module 220 is configured to judge whether the first current value is abnormal according to the magnitude of the first current value;
the determining module 230 is configured to determine whether the first current value is abnormal or not and is associated with the second current value according to the magnitude of the second current value if the first current value is abnormal, determine that the output circuit 130 is short-circuited if the first current value is abnormal, and determine that the primary circuit 110 or the transformer 120 is short-circuited if the first current value is not abnormal.
For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 200, reference is made to the description of the method or the contents of the method steps executed by the apparatus 200 in other embodiments, which is not described herein again.
Referring to fig. 4, an electronic device 300 provided in the embodiments of the present application may include a processor 310, a storage 320, and a communication interface 330, where the electronic device 300 may include the processor 310. The processor 310, the storage 320, and the communication interface 330 are coupled via a bus 340, the storage 320 for storing instructions, the processor 310 for executing instructions stored by the storage 320.
The processor 310 is used for executing the instructions stored in the storage 320 to control the communication interface 330 to receive and transmit signals, and thus, the steps of the method are completed. The storage 320 may be integrated in the processor 310, or may be provided separately from the processor 310.
In one possible implementation, the function of the communication interface 330 may be implemented by a transceiver circuit or a dedicated chip for transceiving. The processor 310 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.
In another possible implementation manner, the apparatus 200 provided by the embodiment of the present application may be implemented by using a general-purpose computer. Program code that implements the functions of the processor 310 and the communication interface 330 is stored in the storage 320, and a general-purpose processor implements the functions of the processor 310 and the communication interface 330 by executing the code in the storage 320.
For the concepts, explanations, details and other steps related to the electronic device 300 and related to the technical solutions provided in the embodiments of the present application, please refer to the description of the foregoing method or the contents of the method steps executed by the electronic device 300 in other embodiments, which is not described herein again.
As another implementation manner of the present embodiment, a computer-readable storage medium is provided for storing a computer program, and the computer-readable storage medium stores instructions that, when executed on a computer, perform the method in the above embodiment.
As another implementation of the present embodiment, a computer program product is provided that contains instructions that, when executed, perform the method in the above-described method embodiments.
Those skilled in the art will appreciate that in an actual terminal or server, there may be multiple processors and storage. The storage may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.
It should be understood that, in the embodiment of the present Application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like.
It should also be understood that references to a memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile storage may be Random Access Memory (RAM) which acts as external cache Memory. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchloined SDRAM (SLDRAM), and Direct memory bus RAM (DR RAM).
It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.
It should be noted that the reservoirs described herein are intended to include, but are not limited to, these and any other suitable types of reservoirs.
The bus may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. But for clarity of illustration the various buses are labeled as buses in the figures.
It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made only for ease of description and should not be used to limit the scope of the present application.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. storage media that are well known in the art. The storage medium is located in a storage, and the processor reads information in the storage and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.
In the embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various Illustrative Logical Blocks (ILBs) and steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate components may or may not be physically separate. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), among others.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for determining a short-circuit location in a charging circuit, wherein the charging circuit comprises a primary circuit, a transformer, and an output circuit, the method comprising:
collecting a first current value of a primary side circuit and a second current value of an output circuit;
judging whether the first current value is abnormal or not according to the magnitude of the first current value;
if the first current value is abnormal, judging whether the first current value is abnormal or not to be associated with the second current value according to the magnitude of the second current value, if so, determining that the output circuit is short-circuited, and if not, determining that the primary circuit or the transformer is short-circuited.
2. The method of determining a short-circuit position in a charging circuit according to claim 1, wherein said determining whether the first current value is abnormal according to the magnitude of the first current value comprises:
comparing the first current value with a primary current threshold value;
if the first current value is larger than or equal to the primary side current threshold value, obtaining that the first current value is abnormal;
and if the first current value is smaller than the primary current threshold value, obtaining that the first current value is normal.
3. The method of claim 2, wherein after obtaining the first current value abnormality, the method further comprises:
and controlling the primary side circuit to be powered off.
4. The method of determining a short circuit location in a charging circuit of claim 3, wherein said determining whether a first current value anomaly is associated with a second current value based on a magnitude of said second current value comprises:
comparing the second current value with the output current threshold value;
if the second current value is larger than or equal to the output current threshold value, determining that the first current value is abnormal and is associated with the second current value;
if the second current value is smaller than the output current threshold value, determining that the first current value is abnormal and is not associated with the second current value; when the charging circuit is in a fault-free condition, and the first current value is equal to the primary current threshold, the second current value is equal to the output current threshold.
5. The method of determining a short circuit location in a charging circuit of claim 4, wherein when the primary circuit is determined to be shorted, the method further comprises the steps of:
locking the primary circuit to inhibit the primary circuit from energizing over-current.
6. The method of determining a short circuit location in a charging circuit of claim 4, wherein said determining that said output circuit is short circuited comprises:
controlling the primary side circuit to be electrified and overcurrent, and acquiring the times of the electrification and overcurrent of the primary side circuit;
judging whether the power-on overcurrent times are smaller than preset times, if so, determining that the output circuit uses a short circuit; if not, the output circuit is determined to be in fault short circuit.
7. The method of determining a short circuit location in a charging circuit of claim 6, wherein:
when the output circuit is determined to use a short circuit, the primary side circuit is controlled to restart;
and when the output circuit is determined to be in fault short circuit, the primary side circuit is locked to prohibit the primary side circuit from being electrified and overcurrent.
8. An apparatus for determining a short-circuit location in a charging circuit, the charging circuit including a primary circuit, a transformer, and an output circuit, the apparatus comprising:
the acquisition module is used for acquiring a first current value of the primary side circuit and a second current value of the output circuit;
the judging module is used for judging whether the first current value is abnormal or not according to the magnitude of the first current value;
and the determining module is used for judging whether the first current value is abnormal and is associated with the second current value according to the magnitude of the second current value if the first current value is abnormal, determining that the output circuit is short-circuited if the first current value is abnormal, and determining that the primary circuit or the transformer is short-circuited if the first current value is not abnormal.
9. An electronic device, comprising storage to store computer instructions and a processor to invoke the computer instructions to perform the method of any of claims 1-7.
10. A computer storage medium storing computer instructions which, when executed by a processor, implement the method of any one of claims 1 to 7.
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| CN115503538A (en) * | 2022-10-29 | 2022-12-23 | 深圳市永联科技股份有限公司 | Charging method and related device |
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