Current slope control method, device, system, electronic equipment and storage medium

Abstract

The application discloses a current slope control method, device, system, electronic equipment and storage medium, which is applied to an electronic load system, the electronic load system comprises a first electronic load and a second electronic load in parallel, the first electronic load and the second electronic load are connected with a measured power supply, the output current slope of the first electronic load is adjustable, the output current slope of the second electronic load is not adjustable, and the method comprises the following steps: obtaining a target current slope; controlling the second electronic load to output a first current; obtaining the slope of the first current; determining a compensation current slope based on the target current slope and the slope of the first current; and controlling the first electronic load to output a second current with the compensation current slope, so that the output current slope of the electronic load system reaches the target current slope.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic load, and in particular to a current slope control method, device, system, electronic device and storage medium. BACKGROUND

[0002] With the development of AI technology application, the requirements for server power, current and response speed are also increasing, so when testing a high-power battery using an electronic load, extremely high test power and extremely fast dynamic response are required. Electronic loads include types with adjustable output current slope and types with unadjustable output current slope. When using both types of electronic loads for high-power output, it is difficult to accurately control the slope of the total output current. SUMMARY

[0003] The present application aims to provide a current slope control method, device, system, electronic device and storage medium that can meet the requirements for current dynamic response speed and energy saving.

[0004] In a first aspect, an embodiment of the present application provides a current slope control method applied to an electronic load system, the electronic load system including a first electronic load and a second electronic load, the first electronic load and the second electronic load being connected in parallel between a positive electrode of a measured power supply and a negative electrode of the measured power supply, the output current slope of the first electronic load being adjustable, the output current slope of the second electronic load being unadjustable, and the method including:

[0005] obtaining a target current slope;

[0006] controlling the second electronic load to output a first current;

[0007] obtaining a slope of the first current;

[0008] determining a compensation current slope based on the target current slope and the slope of the first current;

[0009] controlling the first electronic load to output a second current with the compensation current slope, so that the output current slope of the electronic load system reaches the target current slope.

[0010] According to some embodiments of the present application, the electronic load system further includes a current acquisition unit connected to the second electronic load, and the obtaining of the slope of the first current includes:

[0011] obtaining real-time current data of the first current using the current acquisition unit;

[0012] calculating the slope of the first current according to the real-time current data.

[0013] According to some embodiments of the present application, determining the compensation current slope based on the target current slope and the slope of the first current includes:

[0014] The target current slope is subtracted from the first current slope to obtain a compensation current slope.

[0015] According to some embodiments of the present application, the first electronic load includes:

[0016] A first MOS transistor, wherein a source of the first MOS transistor is connected to the negative electrode of the power supply under test, and a drain of the first MOS transistor is connected to the positive electrode of the power supply under test.

[0017] According to some embodiments of the present application, the second electronic load includes:

[0018] a first inductor, wherein a first end of the first inductor is connected to the positive electrode of the power supply under test;

[0019] a diode, an anode of the diode being connected to the second end of the first inductor;

[0020] a DC-AC converter, wherein a first end of the DC-AC converter is connected to the cathode of the diode, and a second end of the DC-AC converter is connected to the negative electrode of the power supply under test;

[0021] a first capacitor, wherein a first end of the first capacitor is connected to the first end of the first inductor, and a second end of the first capacitor is connected to the negative electrode of the power supply under test;

[0022] a second capacitor, wherein a first end of the second capacitor is connected to the cathode of the diode, and a second end of the second capacitor is connected to the negative electrode of the power supply under test;

[0023] A second MOS transistor, wherein a source of the second MOS transistor is connected to the negative electrode of the power supply under test, and a drain of the second MOS transistor is connected to the second end of the first inductor.

[0024] According to some embodiments of the present application, the electronic load system further includes:

[0025] A second inductor, wherein a first end of the second inductor is connected to the positive electrode of the power supply under test, and a second end of the second inductor is connected to the first end of the first inductor.

[0026] In a first aspect, an embodiment of the present application provides a current control device, which is applied to an electronic load system. The electronic load system includes a first electronic load and a second electronic load, wherein the first electronic load and the second electronic load are arranged in parallel between the positive electrode of a power supply under test and the negative electrode of the power supply under test, and the output current slope of the first electronic load is adjustable, and the output current slope of the second electronic load is not adjustable. The current control device includes:

[0027] A first acquisition module is used to acquire a target current slope;

[0028] a first control module, configured to control the second electronic load to output a first current;

[0029] a second acquisition module, configured to acquire a slope of the first current;

[0030] a slope determining module, configured to determine a compensation current slope based on the target current slope and the slope of the first current;

[0031] The second control module is configured to control the first electronic load to output a second current at a compensated current slope, so that the output current slope of the electronic load system reaches the target current slope.

[0032] In a third aspect, an embodiment of the present application provides an electronic load system, which is provided with a controller, and when the controller is executed, it implements the current slope control method as described above.

[0033] In a fourth aspect, an embodiment of the present application provides an electronic device, including:

[0034] at least one processor;

[0035] at least one memory for storing at least one program;

[0036] When at least one of the programs is executed by at least one of the processors, the current slope control method described above is implemented.

[0037] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a program executable by a processor. When the program executable by the processor is executed by the processor, it is used to implement the current slope control method as described above.

[0038] In an embodiment of the present application, by obtaining the target current slope, controlling the second electronic load to output the first current, obtaining the slope of the first current, determining the compensation current slope based on the target current slope and the slope of the first current, and controlling the first electronic load to output the second current with the compensation current slope, the output current slope of the electronic load system reaches the target current slope, and the output current slope of the electronic load system can be accurately controlled.

[0039] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0041] Figure 1 A schematic diagram of an embodiment of a parallel electronic load system provided in this application;

[0042] Figure 2 A flow chart of an embodiment of a current slope control method provided in this application;

[0043] Figure 3 A circuit diagram of an embodiment of a parallel electronic load system provided in this application;

[0044] Figure 4 A schematic diagram of an embodiment of a current control device provided by the present application;

[0045] Figure 5 This is a schematic diagram of an embodiment of an electronic device provided in this application.

[0046] Reference numerals:

[0047] First electronic load 100, second electronic load 200, tested power supply 300, current control device 400, first acquisition module 410, first control module 420, second acquisition module 430, slope determination module 440, second control module 450, electronic device 500, processor 510, memory 520. DETAILED DESCRIPTION

[0048] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0049] In the description of this application, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] In the description of this application, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0051] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0052] The following is based on Figures 1 to 5 A current slope control method, device, system, electronic device, and storage medium provided in embodiments of the present application are described.

[0053] The present application provides a current slope control method, which is applied to an electronic load system, such as Figure 1 As shown, the electronic load system includes a controller ( Figure 1 ), a first electronic load 100 and a second electronic load 200 are connected in parallel, a controller is connected to the first electronic load 100 and the second electronic load 200 respectively, the first electronic load 100 and the second electronic load 200 are both connected to a power supply 300 under test, the output current slope of the first electronic load 100 is adjustable, and the output current slope of the second electronic load 200 is not adjustable, as shown in FIG. Figure 2 As shown, the method includes:

[0054] Step S100: obtaining a target current slope;

[0055] Step S200: controlling the second electronic load 200 to output a first current;

[0056] Step S300: obtaining the slope of the first current;

[0057] Step S400: determining a compensation current slope based on the target current slope and the slope of the first current;

[0058] Step S500 : controlling the first electronic load 100 to output a second current with a compensation current slope, so that the output current slope of the electronic load system reaches a target current slope.

[0059] In this embodiment, by obtaining the target current slope, controlling the second electronic load 200 to output the first current, obtaining the slope of the first current, determining the compensation current slope based on the target current slope and the slope of the first current, and controlling the first electronic load 100 to output the second current with the compensation current slope, the output current slope of the electronic load system reaches the target current slope, and the output current slope of the electronic load system can be accurately controlled.

[0060] In some embodiments of the present application, the output current slope of the second electronic load 200 is not adjustable. The second electronic load 200 can only output current at a fixed slope, or the second electronic load 200 can output current at maximum power, and the current slope continuously changes and is not adjustable.

[0061] In some embodiments of the present application, the electronic load system further includes a current acquisition unit connected to the second electronic load; further describing the "obtaining the slope of the first current" in step S300, step S300 includes:

[0062] Step S310: using a current acquisition unit to acquire real-time current data of a first current;

[0063] Step S320: Calculate the slope of the first current according to the real-time current data.

[0064] In this embodiment, the controller collects real-time current data of the first current through the current collection unit, and then calculates the slope of the first current according to the real-time current data.

[0065] In some embodiments of the present application, the step S400 of “determining the compensation current slope based on the target current slope and the slope of the first current” is further described. Step S400 includes:

[0066] Step S410: subtracting the slope of the first current from the target current slope to obtain a compensation current slope.

[0067] In this embodiment, the slope of the first current is subtracted from the slope of the target current to obtain a difference between the slopes of the target current and the first current, ie, the compensation current slope.

[0068] In some embodiments of the present application, Figure 3 As shown, the first electronic load 100 includes a first MOS transistor Q1, a source of the first MOS transistor Q1 connected to the negative electrode of the power supply 300 under test, a drain of the first MOS transistor Q1 connected to the positive electrode of the power supply 300 under test, and a gate of the first MOS transistor Q1 connected to the controller.

[0069] In some embodiments of the present application, Figure 3 As shown, the second electronic load 200 includes:

[0070] A first inductor L2, wherein a first end of the first inductor L2 is connected to the positive electrode of the power supply 300 under test;

[0071] a diode D1, where an anode of the diode D1 is connected to the second end of the first inductor L2;

[0072] The first end of the DC-AC converter T1 is connected to the cathode of the diode D1, and the second end of the DC-AC converter T1 is connected to the negative electrode of the measured power supply 300.

[0073] The first end of the first capacitor C1 is connected to the first end of the first inductor L2, and the second end of the first capacitor C1 is connected to the negative electrode of the measured power supply 300.

[0074] The first end of the second capacitor C2 is connected to the cathode of the diode D1, and the second end of the second capacitor C2 is connected to the negative electrode of the measured power supply 300.

[0075] The source of the second MOS tube Q2 is connected to the negative electrode of the measured power supply 300, the drain of the second MOS tube Q2 is connected to the second end of the first inductor L2, and the gate of the second MOS tube Q2 is connected to the controller.

[0076] In some embodiments of the present application, as shown in Figure 3 The electronic load system further comprises:

[0077] The first end of the second inductor L1 is connected to the positive electrode of the measured power supply 300, and the second end of the second inductor L1 is connected to the first end of the first inductor L2.

[0078] In the present embodiment, when the measured power supply 300 is tested, there is a certain voltage fluctuation in the port voltage of the measured power supply 300. The voltage fluctuation is superimposed on the port capacitor of the electronic load system, which will generate a certain differential current. The differential current will affect the output current control of the electronic load system. The influence of the differential current can be reduced by the second inductor L1 with a relatively small inductance.

[0079] In addition, the present application provides a current control device applied to an electronic load system. The electronic load system comprises a first electronic load 100 and a second electronic load 200 connected in parallel. The first electronic load 100 and the second electronic load 200 are both connected to a measured power supply 300. The output current slope of the first electronic load 100 is adjustable, and the output current slope of the second electronic load 200 is not adjustable, as shown in Figure 4 The current control device 400 comprises:

[0080] The first acquisition module 410 is configured to acquire a target current slope.

[0081] The first control module 420 is configured to control the second electronic load 200 to output a first current.

[0082] The second acquisition module 430 is configured to acquire the slope of the first current.

[0083] a slope determination module 440 for determining a compensation current slope based on a target current slope and a slope of the first current;

[0084] The third control module 450 is configured to control the first electronic load 100 to output the second current at the compensated current slope, so that the output current slope of the electronic load system reaches the target current slope.

[0085] The current control device 400 provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same beneficial effects. To avoid repetition, it will not be described here.

[0086] In addition, an embodiment of the present application provides an electronic load system, which is provided with a controller, and when executed, the controller implements the current slope control method as described above.

[0087] The electronic load system provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same beneficial effects. To avoid repetition, it will not be described here.

[0088] In addition, an embodiment of the present application further discloses an electronic device 500, such as Figure 5 Shown, including:

[0089] at least one processor 510;

[0090] at least one memory 520, for storing at least one program;

[0091] When at least one program is executed by at least one processor 510 , the current slope control method described above is implemented.

[0092] The electronic device 500 provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same beneficial effects. To avoid repetition, it will not be described here.

[0093] In addition, an embodiment of the present application provides a computer-readable storage medium, which stores a program executable by a processor. When the program executable by the processor is executed by the processor, it is used to implement the current slope control method as described above.

[0094] The computer-readable storage medium provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same beneficial effects. To avoid repetition, it will not be described here.

[0095] As will be appreciated by one of ordinary skill in the art, all or some steps, systems of the above-disclosed methods can be implemented in, e.g., software, firmware, hardware, or any suitable combination thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application- specific integrated circuit. Such software can be distributed on computer readable media, which can comprise computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media include, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and includes any information delivery media.

[0096] The above detailed description of the application has been given by way of example, and the application is not limited to the examples described above, but can be varied and modified within the scope of the application.

Claims

1. A current slope control method, characterized in that: The method is applied to an electronic load system, the electronic load system including a first electronic load and a second electronic load, the first electronic load and the second electronic load being arranged in parallel between a positive electrode of a power supply under test and a negative electrode of the power supply under test, the output current slope of the first electronic load being adjustable, and the output current slope of the second electronic load being non-adjustable, and comprising: Get the target current slope; controlling the second electronic load to output a first current; obtaining a slope of the first current; determining a compensation current slope based on the target current slope and the slope of the first current; controlling the first electronic load to output a second current at a compensation current slope, so that the output current slope of the electronic load system reaches the target current slope; The determining the compensation current slope based on the target current slope and the slope of the first current includes: The target current slope is subtracted from the first current slope to obtain a compensation current slope.

2. The current slope control method according to claim 1, characterized in that: The electronic load system further includes a current acquisition unit connected to the second electronic load; and obtaining the slope of the first current includes: Acquiring real-time current data of the first current using the current acquisition unit; The slope of the first current is calculated based on the real-time current data.

3. The current slope control method according to claim 1, characterized in that: The first electronic load includes: A first MOS transistor, wherein a source of the first MOS transistor is connected to the negative electrode of the power supply under test, and a drain of the first MOS transistor is connected to the positive electrode of the power supply under test.

4. The current slope control method according to claim 1, characterized in that: The second electronic load includes: a first inductor, wherein a first end of the first inductor is connected to the positive electrode of the power supply under test; a diode, an anode of the diode being connected to the second end of the first inductor; a DC-AC converter, wherein a first end of the DC-AC converter is connected to the cathode of the diode, and a second end of the DC-AC converter is connected to the negative electrode of the power supply under test; a first capacitor, wherein a first end of the first capacitor is connected to the first end of the first inductor, and a second end of the first capacitor is connected to the negative electrode of the power supply under test; a second capacitor, wherein a first end of the second capacitor is connected to the cathode of the diode, and a second end of the second capacitor is connected to the negative electrode of the power supply under test; A second MOS transistor, wherein a source of the second MOS transistor is connected to the negative electrode of the power supply under test, and a drain of the second MOS transistor is connected to the second end of the first inductor.

5. The current slope control method according to claim 4, characterized in that: The electronic load system further includes: A second inductor, wherein a first end of the second inductor is connected to the positive electrode of the power supply under test, and a second end of the second inductor is connected to the first end of the first inductor.

6. A current control device, characterized in that: Applied to an electronic load system, the electronic load system includes a first electronic load and a second electronic load, the first electronic load and the second electronic load are arranged in parallel between the positive electrode of the power supply under test and the negative electrode of the power supply under test, the output current slope of the first electronic load is adjustable, and the output current slope of the second electronic load is not adjustable, and the current control device includes: A first acquisition module is used to acquire a target current slope; a first control module, configured to control the second electronic load to output a first current; a second acquisition module, configured to acquire a slope of the first current; a slope determining module, configured to determine a compensation current slope based on the target current slope and the slope of the first current; a second control module, configured to control the first electronic load to output a second current at a compensated current slope, so that the output current slope of the electronic load system reaches the target current slope; The determining the compensation current slope based on the target current slope and the slope of the first current includes: The target current slope is subtracted from the first current slope to obtain a compensation current slope.

7. An electronic load system, characterized in that: A controller is provided, and when the controller is executed, the current slope control method according to any one of claims 1 to 5 is implemented.

8. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When at least one of the programs is executed by at least one of the processors, the current slope control method according to any one of claims 1 to 5 is implemented.

9. A computer-readable storage medium, characterized in that A program executable by a processor is stored therein, and when the program executable by the processor is executed by the processor, it is used to implement the current slope control method according to any one of claims 1 to 5.

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