Parallel contactor monitoring method, device and equipment and readable storage medium
By acquiring the temperature and temperature rise curve trends of parallel contactors and using temperature sensors to replace current sensors, low-cost condition monitoring of parallel contactors is achieved, solving the high cost problem and ensuring normal system operation.
Patent Information
- Application Number
- CN202511780192.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-03-03
AI Technical Summary
Existing methods for monitoring parallel contactors use current sensors, which are costly and lack low-cost, accurate monitoring solutions.
By acquiring the temperatures of the first and second contactors in the parallel contactor in real time, it is determined whether the temperature difference and the trend of the temperature rise curve are within the preset range, and the temperature sensor is used to replace the current sensor for status monitoring.
It reduces monitoring costs, ensures normal system operation, identifies contactor malfunctions and controls disconnection, and improves monitoring accuracy and cost-effectiveness.
Smart Images
Figure CN121595995A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of contactor monitoring technology, and in particular to a method, apparatus, equipment, and readable storage medium for monitoring parallel contactors. Background Technology
[0002] With the continuous increase in the power demand of high-voltage systems in new energy vehicles (such as fast charging power reaching 600A or more), traditional single high-current contactors lack standardized products that meet mass production requirements due to issues such as high cost, manufacturing difficulty, and redundant size. The industry generally adopts a dual-contactor parallel scheme as an alternative to reduce system costs and optimize space layout.
[0003] Existing technologies mostly use current sensors to monitor the status of parallel contactors. However, in parallel contactor scenarios, two additional current sensor hardware components are required, significantly increasing costs. Therefore, there is an urgent need for a low-cost method for monitoring parallel contactors to accurately monitor their status. Summary of the Invention
[0004] This invention provides a method, apparatus, device, and readable storage medium for monitoring parallel contactors, in order to solve the technical problem that existing parallel contactor monitoring methods use current sensors for monitoring, which are costly.
[0005] Firstly, a method for monitoring parallel contactors is provided, including the following steps: Real-time acquisition of the temperatures of the first and second contactors in a parallel contactor system; Determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trends of the first contactor and the second contactor are within a preset trend difference range. If yes, confirm that both the first and second contactors are normal; if no, confirm that the first contactor is normal and the second contactor is abnormal, or confirm that the first contactor is abnormal and the second contactor is normal.
[0006] In some embodiments, the "if not" statement, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
[0007] In some embodiments, the "if not" statement, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature rise curve trend of the first contactor is greater than that of the temperature rise curve trend of the first contactor; If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
[0008] In some embodiments, the "if not" step, after confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: The first or second contactor disconnects due to a control malfunction.
[0009] Secondly, a parallel contactor monitoring device is provided, comprising: The acquisition unit is used to acquire the temperature of the first and second contactors in the parallel contactors in real time; The judgment unit is used to determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trend of the first contactor and the second contactor is within a preset trend difference range. The confirmation unit is used to confirm that, if yes, the first contactor and the second contactor are normal; if no, it confirms that the first contactor is normal and the second contactor is abnormal, or confirms that the first contactor is abnormal and the second contactor is normal.
[0010] In some embodiments, the "if not" statement, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0011] In some embodiments, the "if not" statement, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature rise curve trend of the first contactor is greater than that of the temperature rise curve trend of the first contactor; If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0012] In some embodiments, the "if not" step, after confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: The first or second contactor disconnects due to a control malfunction.
[0013] Thirdly, a computer device is provided, comprising: a memory and a processor, wherein the memory stores at least one instruction, the at least one instruction being loaded and executed by the processor to implement the aforementioned parallel contactor monitoring method.
[0014] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the aforementioned parallel contactor monitoring method.
[0015] The beneficial effects of the technical solution provided by this invention include: This invention provides a method, apparatus, device, and readable storage medium for monitoring parallel contactors. The method first acquires the temperatures of the first and second contactors in a parallel connection in real time. Then, it determines whether the temperature difference between the first and second contactors is within a preset temperature difference range and whether the temperature rise curves of the first and second contactors are within a preset trend difference range. Finally, if both are within the preset range, it confirms that both the first and second contactors are functioning normally; otherwise, it confirms that the first contactor is functioning normally and the second contactor is malfunctioning, or vice versa. In other words, this invention utilizes the fact that parallel contactors are of the same specification, with essentially identical copper busbar specifications, and ideally, equal contact resistance and heating power. By acquiring the temperatures of the two contactors, the operating status of the two contactors is determined, thereby ensuring normal system operation. Temperature sensors can be used to acquire the temperature, which significantly reduces costs compared to using current sensors. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A flowchart illustrating a parallel contactor monitoring method provided in an embodiment of the present invention; Figure 2 Implementation provided for the embodiments of the present invention Figure 1 A flowchart of step S30; Figure 3 Implementation provided for the embodiments of the present invention Figure 1 Another flowchart of step S30; Figure 4 This is a schematic diagram of the structure of a parallel contactor monitoring device provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] This invention provides a method for monitoring parallel contactors, which solves the technical problem that existing methods for monitoring parallel contactors use current sensors, resulting in high costs.
[0020] See Figure 1 As shown, this embodiment of the invention provides a method for monitoring parallel contactors, including the following steps: Step S10: Real-time acquisition of the temperatures of the first and second contactors in the parallel contactor circuit.
[0021] Specifically, temperature sensors are installed at the same locations on the first and second contactors in the parallel contactor system. The temperatures of the first and second contactors are obtained in real time through these two sensors. Contact-type temperature sensors can be used. These sensors achieve thermal equilibrium through conduction or convection, allowing them to directly represent the temperature of the measured object with high accuracy. Commonly used contact-type temperature sensors include thermistor temperature sensors, which are low-cost and have simple detection circuits.
[0022] Step S20: Determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trend difference between the first contactor and the second contactor is within a preset trend difference range.
[0023] Step S30: If yes, confirm that both the first contactor and the second contactor are normal; if no, confirm that the first contactor is normal and the second contactor is abnormal, or confirm that the first contactor is abnormal and the second contactor is normal.
[0024] For example, during a charging process, the ambient temperature is 30°C, and the parallel contactor carries a current of 400A.
[0025] Scenario 1: After 2 minutes of flow, the temperature collected on the first contactor is 50℃, and the temperature collected on the second contactor is 48℃. The temperature rise of the first contactor is 20℃, and the temperature rise of the second contactor is 18℃. The temperature difference is 50℃ - 48℃ = 2℃. Within the corresponding preset temperature difference range (assuming ±5℃), the temperature rise curve trend difference is 20℃ / 2min - 18℃ / 2min = 1℃ / min. Within the corresponding preset trend difference range (assuming ±2.5℃ / min), it is confirmed that both the first and second contactors are normal.
[0026] The second scenario: After 2 minutes of flow, the temperature collected on the first contactor is 50℃, and the temperature collected on the second contactor is 35℃. The temperature rise of the first contactor is 20℃, while that of the second contactor is only 5℃. The temperature difference is 50℃ - 35℃ = 15℃, which exceeds the corresponding preset temperature difference range (assuming ±5℃). The temperature rise curve trend difference is 20℃ / 2min - 5℃ / 2min = 7.5℃ / min, which exceeds the corresponding preset trend difference range (assuming ±2.5℃ / min). It can be confirmed that the first contactor is normal and the second contactor is abnormal, or the first contactor is abnormal and the second contactor is normal (it should be the first contactor is normal and the second contactor is abnormal).
[0027] The third scenario: After 2 minutes of flow, the temperature collected on the first contactor is 35℃, and the temperature collected on the second contactor is 50℃. The temperature rise of the first contactor is only 5℃, and the temperature rise of the second contactor is 2℃. The temperature difference is 35℃-50℃=-15℃, which exceeds the corresponding preset temperature difference range (assuming ±5℃). The temperature rise curve trend difference is 5℃ / 2min-20℃ / 2min=-7.5℃ / min, which exceeds the corresponding preset trend difference range (assuming ±2.5℃ / min). It can be confirmed that the first contactor is normal, the second contactor is abnormal, or the first contactor is abnormal and the second contactor is normal (it should be the first contactor is abnormal and the second contactor is normal).
[0028] The parallel contactor monitoring method in this embodiment of the invention first acquires the temperatures of the first and second contactors in the parallel contactor network in real time; then, it determines whether the temperature difference between the first and second contactors is within a preset temperature difference range and whether the temperature rise curve trends of the first and second contactors are within a preset trend difference range; finally, it determines whether the first or second contactor is malfunctioning based on the determination results. In other words, this invention utilizes the fact that the parallel contactors are of the same specification, the matching copper busbars are of essentially the same specification, and ideally, their contact resistance and heating power are equal. By acquiring the temperatures of the two contactors, the operating status of the two contactors is determined, thereby ensuring the normal operation of the system. Temperature sensors can be used to acquire the temperature, which significantly reduces costs compared to using current sensors.
[0029] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the statement "if not, confirm that the first contactor is normal and the second contactor is abnormal" or "confirm that the first contactor is abnormal and the second contactor is normal" includes: Step S301: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. Step S302: If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0030] Since the voltage U across the first and second contactors is the same, according to the heat generation formula: Q = (U² / R)t / 2. If a contactor malfunctions, R increases or becomes infinitely large, reducing its heat generation. This results in a relatively larger increase in heat generation for a normal contactor. This embodiment of the invention simply utilizes the physical differences in heating, cooling, and conduction to identify whether a contactor is functioning properly.
[0031] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, the statement "if not, confirm that the first contactor is normal and the second contactor is abnormal" or "confirm that the first contactor is abnormal and the second contactor is normal" includes: Step S303: Determine whether the temperature rise curve trend of the first contactor is greater than the temperature rise curve trend of the first contactor. Step S304: If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0032] Since the voltage U across the first and second contactors is the same, according to the heat generation formula: Q = (U² / R)t / 2. If a contactor malfunctions, R increases or becomes infinitely large, reducing its heat generation. This results in a relatively larger increase in heat generation for a normal contactor, leading to a greater temperature rise trend. This embodiment of the invention simply utilizes the physical differences in heating, cooling, and conduction to identify whether a contactor is functioning properly.
[0033] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: The first or second contactor disconnects due to a control malfunction.
[0034] Specifically, if both the first and second contactors are functioning normally, the system can be loaded according to its maximum current (or power) requirement. If one contactor malfunctions, the system can be loaded at half its maximum current (or power). If the contactor temperature reaches its limit and continues to rise, the system power will be further reduced, allowing full utilization of the contactor's capacity and minimizing power reduction.
[0035] See Figure 4 As shown, this embodiment of the invention also provides a parallel contactor monitoring device, including: an acquisition unit, a judgment unit, and a confirmation unit.
[0036] The acquisition unit is used to acquire the temperature of the first and second contactors in the parallel contactor in real time.
[0037] Specifically, temperature sensors are installed at the same locations on the first and second contactors in the parallel contactor system. The temperatures of the first and second contactors are obtained in real time through these two sensors. Contact-type temperature sensors can be used. These sensors achieve thermal equilibrium through conduction or convection, allowing them to directly represent the temperature of the measured object with high accuracy. Commonly used contact-type temperature sensors include thermistor temperature sensors, which are low-cost and have simple detection circuits.
[0038] The judgment unit is used to determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trend of the first contactor and the second contactor is within a preset trend difference range.
[0039] The confirmation unit is used to confirm that if the first contactor and the second contactor are normal, then if the first contactor is normal and the second contactor is abnormal, or if the first contactor is abnormal and the second contactor is normal.
[0040] For example, during a charging process, the ambient temperature is 30°C, and the parallel contactor carries a current of 400A.
[0041] Scenario 1: After 2 minutes of flow, the temperature collected on the first contactor is 50℃, and the temperature collected on the second contactor is 48℃. The temperature rise of the first contactor is 20℃, and the temperature rise of the second contactor is 18℃. The temperature difference is 50℃ - 48℃ = 2℃. Within the corresponding preset temperature difference range (assuming ±5℃), the temperature rise curve trend difference is 20℃ / 2min - 18℃ / 2min = 1℃ / min. Within the corresponding preset trend difference range (assuming ±2.5℃ / min), it is confirmed that both the first and second contactors are normal.
[0042] The second scenario: After 2 minutes of flow, the temperature collected on the first contactor is 50℃, and the temperature collected on the second contactor is 35℃. The temperature rise of the first contactor is 20℃, while that of the second contactor is only 5℃. The temperature difference is 50℃ - 35℃ = 15℃, which exceeds the corresponding preset temperature difference range (assuming ±5℃). The temperature rise curve trend difference is 20℃ / 2min - 5℃ / 2min = 7.5℃ / min, which exceeds the corresponding preset trend difference range (assuming ±2.5℃ / min). It can be confirmed that the first contactor is normal and the second contactor is abnormal, or the first contactor is abnormal and the second contactor is normal (it should be the first contactor is normal and the second contactor is abnormal).
[0043] The third scenario: After 2 minutes of flow, the temperature collected on the first contactor is 35℃, and the temperature collected on the second contactor is 50℃. The temperature rise of the first contactor is only 5℃, and the temperature rise of the second contactor is 2℃. The temperature difference is 35℃-50℃=-15℃, which exceeds the corresponding preset temperature difference range (assuming ±5℃). The temperature rise curve trend difference is 5℃ / 2min-20℃ / 2min=-7.5℃ / min, which exceeds the corresponding preset trend difference range (assuming ±2.5℃ / min). It can be confirmed that the first contactor is normal, the second contactor is abnormal, or the first contactor is abnormal and the second contactor is normal (it should be the first contactor is abnormal and the second contactor is normal).
[0044] The parallel contactor monitoring device in this embodiment of the invention includes an acquisition unit that first acquires the temperatures of the first and second contactors in the parallel contactor network in real time; a judgment unit then determines whether the temperature difference between the first and second contactors is within a preset temperature difference range and whether the temperature rise curve trends of the first and second contactors are within a preset trend difference range; and a confirmation unit finally determines whether the first or second contactor is malfunctioning based on the judgment results. In other words, this invention utilizes the fact that the parallel contactors are of the same specification, the matching copper busbars are of essentially the same specification, and ideally, their contact resistance and heating power are equal. By acquiring the temperatures of the two contactors, the operating status of the two contactors is determined, thereby ensuring the normal operation of the system. Temperature sensors can be used to acquire the temperature, which significantly reduces costs compared to using current sensors.
[0045] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0046] Since the voltage U across the first and second contactors is the same, according to the heat generation formula: Q = (U² / R)t / 2. If a contactor malfunctions, R increases or becomes infinitely large, reducing its heat generation. This results in a relatively larger increase in heat generation for a normal contactor. This embodiment of the invention simply utilizes the physical differences in heating, cooling, and conduction to identify whether a contactor is functioning properly.
[0047] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature rise curve trend of the first contactor is greater than that of the temperature rise curve trend of the first contactor; If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
[0048] Since the voltage U across the first and second contactors is the same, according to the heat generation formula: Q = (U² / R)t / 2. If a contactor malfunctions, R increases or becomes infinitely large, reducing its heat generation. This results in a relatively larger increase in heat generation for a normal contactor, leading to a greater temperature rise trend. This embodiment of the invention simply utilizes the physical differences in heating, cooling, and conduction to identify whether a contactor is functioning properly.
[0049] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: The first or second contactor disconnects due to a control malfunction.
[0050] Specifically, if both the first and second contactors are functioning normally, the system can be loaded according to its maximum current (or power) requirement. If one contactor malfunctions, the system can be loaded at half its maximum current (or power). If the contactor temperature reaches its limit and continues to rise, the system power will be further reduced, allowing full utilization of the contactor's capacity and minimizing power reduction.
[0051] This invention also provides a computer device, including: a memory, a processor, and a network interface connected via a system bus, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement all or part of the steps of the aforementioned parallel contactor monitoring method.
[0052] The network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device to which the present invention is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0053] A processor can be a CPU, or 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, or discrete hardware components. A general-purpose processor can be a microprocessor, or any conventional processor. The processor is the control center of a computer device, connecting all parts of the computer device through various interfaces and lines.
[0054] Memory can be used to store computer programs and / or modules. The processor implements various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, application programs required for at least one function (such as video playback, image playback, etc.), etc.; the data storage area can store data created based on the use of the mobile phone (such as video data, image data, etc.). In addition, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital (SD) cards, Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.
[0055] In one embodiment of the invention, the processor is used to run a computer program stored in a memory to perform the following steps: Step S10: Real-time acquisition of the temperatures of the first and second contactors in the parallel contactor circuit; Step S20: Determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trend of the first contactor and the second contactor is within a preset trend difference range. Step S30: If yes, confirm that both the first contactor and the second contactor are normal; if no, confirm that the first contactor is normal and the second contactor is abnormal, or confirm that the first contactor is abnormal and the second contactor is normal.
[0056] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: Step S301: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. Step S302: If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
[0057] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: Step S303: Determine whether the temperature rise curve trend of the first contactor is greater than the temperature rise curve trend of the first contactor. Step S304: If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
[0058] As an optional implementation, in one embodiment of the invention, the step of confirming whether the first contactor is normal and the second contactor is abnormal, or confirming whether the first contactor is abnormal and the second contactor is normal, includes: The first or second contactor disconnects due to a control malfunction.
[0059] This invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements all or part of the steps of the aforementioned parallel contactor monitoring method.
[0060] The embodiments of the present invention can implement all or part of the aforementioned processes, or they can be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various methods described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.
[0061] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.
[0062] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.
[0063] The serial numbers in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0064] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0065] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.
Claims
1. A method for monitoring parallel contactors, characterized in that, Includes the following steps: Real-time acquisition of the temperatures of the first and second contactors in a parallel contactor system; Determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trends of the first contactor and the second contactor are within a preset trend difference range. If so, confirm that both the first and second contactors are functioning correctly; If not, confirm that the first contactor is normal and the second contactor is abnormal, or confirm that the first contactor is abnormal and the second contactor is normal.
2. The parallel contactor monitoring method according to claim 1, characterized in that, If not, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
3. The parallel contactor monitoring method according to claim 1, characterized in that, If not, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature rise curve trend of the first contactor is greater than that of the temperature rise curve trend of the first contactor; If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, confirm that the first contactor is abnormal and the second contactor is normal.
4. The parallel contactor monitoring method according to claim 1, characterized in that, If not, after confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, the following steps are included: The first or second contactor disconnects due to a control malfunction.
5. A parallel contactor monitoring device, characterized in that, include: The acquisition unit is used to acquire the temperature of the first and second contactors in the parallel contactors in real time; The judgment unit is used to determine whether the temperature difference between the first contactor and the second contactor is within a preset temperature difference range and whether the temperature rise curve trend of the first contactor and the second contactor is within a preset trend difference range. The confirmation unit is used to confirm that, if so, the first contactor and the second contactor are functioning normally. If not, confirm that the first contactor is normal and the second contactor is abnormal, or confirm that the first contactor is abnormal and the second contactor is normal.
6. The parallel contactor monitoring device according to claim 5, characterized in that, If not, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature of the first contactor is greater than the temperature of the first contactor. If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
7. The parallel contactor monitoring device according to claim 5, characterized in that, If not, confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, includes: Determine whether the temperature rise curve trend of the first contactor is greater than that of the temperature rise curve trend of the first contactor; If yes, confirm that the first contactor is normal and the second contactor is abnormal; if no, the first contactor is abnormal and the second contactor is normal.
8. The parallel contactor monitoring device according to claim 5, characterized in that, If not, after confirming that the first contactor is normal and the second contactor is abnormal, or confirming that the first contactor is abnormal and the second contactor is normal, the following steps are included: The first or second contactor disconnects due to a control malfunction.
9. A computer device, characterized in that, include: A memory and a processor, wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the parallel contactor monitoring method according to any one of claims 1 to 4.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions that, when executed by a computer, cause the computer to perform the parallel contactor monitoring method according to any one of claims 1 to 4.