A power supply system and method

Abstract

The application relates to the technical field of power supply, and discloses a power supply system and method, which comprises a capacitor regulation device and a power supply unit; the capacitor regulation device is used for acquiring the ambient temperature, the actual output power and the target output power of the power supply unit, and determining the current capacitance value of a preset capacitor in the power supply unit and a target temperature corresponding to the current capacitance value; the capacitor regulation device is used for determining a first difference value between the target temperature and the ambient temperature, and a second difference value between the actual output power and the target output power, and regulating the capacitance value of the preset capacitor to be a target capacitance value according to the first difference value and the second difference value; and the power supply unit is used for supplying power to a target load based on the preset capacitor with the capacitance value being the target capacitance value. The problem that the aluminum electrolytic capacitor in the power supply unit is easily affected by the environment, thereby leading to the performance deterioration of the power supply unit is solved.

Description

Technical Field

[0001] This invention relates to the field of power supply technology, and more specifically to a power supply system and method. Background Technology

[0002] A power supply unit (PSU) is a crucial component in electronic devices such as computers, servers, network equipment, and industrial control equipment. The primary function of a power supply is to convert input alternating current (AC) into stable direct current (DC) to power the various components within the device. Hold-up time and power factor (PF) are two important performance indicators of a power supply. Hold-up time is the duration for which the output voltage remains constant when the input voltage is transiently lost. Power factor is an important indicator of a power supply's efficiency, representing the ratio of active power to apparent power.

[0003] Aluminum electrolytic capacitors are crucial energy storage components in power supplies, and their performance directly affects the power supply's output sustain time and power factor. However, the capacitance value of aluminum electrolytic capacitors is easily affected by the environment, which can cause it to decrease. This can lead to a sharp decline in the capacitor's performance, resulting in insufficient output sustain time or a deterioration in the power supply's power factor when the input voltage experiences a transient power loss.

[0004] Therefore, the related technology has the problem that the aluminum electrolytic capacitors in the power supply are easily affected by the environment, leading to a deterioration in the performance of the power supply. Summary of the Invention

[0005] In view of this, the present invention provides a power supply system and method to solve the problem that aluminum electrolytic capacitors in power supplies are easily affected by the environment, leading to a deterioration in the performance of the power supply.

[0006] In a first aspect, the present invention provides a power supply system, the system comprising: a capacitor regulation device and a power supply unit;

[0007] The capacitor regulation device is used to obtain the ambient temperature, actual output power and target output power of the power supply, and to determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0008] The capacitor regulation device is used to determine the first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power, and adjusts the capacitance value of the preset capacitor to the target capacitance value based on the first difference, the second difference and the current capacitance value.

[0009] The power supply is used to supply power to the target load based on a preset capacitor with a target capacitance value.

[0010] The power supply system provided in this embodiment uses a capacitor regulation device to adjust the preset capacitor to the target capacitance value based on a first difference between the target temperature and the ambient temperature, a second difference between the actual output power and the target output power, and the current capacitance value of the preset capacitor in the power supply. This eliminates the influence of the environment on the preset capacitor, improves the performance of the power supply, and enables the power supply to operate stably in different environments. It also increases the output sustaining time of the power supply. This solves the problem that the aluminum electrolytic capacitor in the power supply is easily affected by the environment, leading to a deterioration in the power supply's performance.

[0011] In one optional implementation, the capacitor regulation device includes: an ambient temperature sensing module, a power sensing module, a control module, a heating module, and a dynamic formula module;

[0012] The ambient temperature sensing module is connected to the control module to acquire the ambient temperature and transmit it to the control module.

[0013] The power sensing module is connected to the control module to obtain the actual output power and the target output power, and then transmits the actual output power and the target output power to the control module.

[0014] The dynamic formula module is connected to the control module and is used to obtain the temperature-capacitance correspondence of the preset capacitor and the current capacitor value. Based on the current capacitor value and the temperature-capacitance correspondence, the target temperature is determined, and the current capacitor value and the target temperature are transmitted to the control module.

[0015] The control module is connected to the heating module and is used to determine the first difference and the second difference. Based on the first difference, the second difference and the current capacitance value, the target heating power of the heating module is determined and the target heating power is transmitted to the heating module.

[0016] The heating module is used to heat a preset capacitor according to the target heating power, and to adjust the capacitance value of the preset capacitor to the target capacitance value. Examples of heating modules include heaters, heating films, and heating elements. The heating module covers the cylindrical outer shell of the preset capacitor and can heat the outer shell of the preset capacitor.

[0017] In this embodiment, a target heating power is determined, and the heating module heats the preset capacitor according to the target heating power. The capacitance value of the preset capacitor is adjusted to the target capacitance value so that the preset capacitor can adapt to environmental changes and ensure that the aluminum electrolytic capacitor operates within the optimal temperature range, thereby improving its capacitance and energy storage performance.

[0018] In one optional implementation, the ambient temperature sensing module acquires the ambient temperature and transmits the ambient temperature to the control module, including: acquiring the ambient temperature of the power supply;

[0019] When the ambient temperature is lower than the first preset threshold, or when the output holding voltage of the power supply is greater than the second preset threshold, the ambient temperature is transmitted to the control module.

[0020] In one optional embodiment, the capacitance regulation device further includes: a capacitance temperature sensing module;

[0021] The capacitor temperature sensing module is connected to the dynamic formula module to obtain the current temperature of the preset capacitor and send the current temperature to the dynamic formula module.

[0022] The dynamic formula module acquires the temperature-capacitance correspondence of a preset capacitor and the current capacitor value. Based on the current capacitor value and the temperature-capacitance correspondence, it determines the target temperature and transmits both the current capacitor value and the target temperature to the control module, including:

[0023] Obtain the capacitance value of a preset capacitor at a preset number of temperatures, and generate a temperature-capacitance curve based on the preset number of temperatures and capacitance values. The temperature-capacitance curve contains the correspondence between temperature and capacitance values.

[0024] The target temperature is determined based on the correspondence between the current capacitance value and the temperature capacitance value. If the current temperature is lower than the target temperature, the current capacitance value and the target temperature are transmitted to the control module.

[0025] In this embodiment, as long as the current temperature of the preset capacitor is lower than the target temperature, the dynamic formula module transmits the current capacitance value and the target temperature to the control module. The control module then dynamically adjusts the temperature of the preset capacitor to increase its capacitance value and improve the stability and efficiency of the power supply.

[0026] In one optional implementation, the control module determines a first difference, determines a target heating power for the heating module based on the first difference, a second difference, and the current capacitance value, and transmits the target heating power to the heating module, including:

[0027] Determine the first difference between the target temperature and the ambient temperature;

[0028] The system acquires preset control parameters and the initial capacitance value of the preset capacitor. Based on the first difference, the second difference, the preset control parameters, the initial capacitance value, and the current capacitance value, it determines the target heating power of the heating module and transmits the target heating power to the heating module.

[0029] In this embodiment, the control module determines the target heating power of the heating module and transmits the target heating power to the heating module to heat the preset capacitor, raising its temperature and causing its capacitance value to reach the target capacitance value. This achieves adaptive gain adjustment of the preset capacitor's capacitance value in temperature and power control.

[0030] In one optional implementation, the power supply includes: a filter module, a rectifier module, a power factor correction module, a pulse width modulation module, a transformer module, an output rectifier module, a reverse current protection module, and a DC output module.

[0031] The power factor correction module includes a preset capacitor;

[0032] The DC output module is used to output DC voltage to the target load to power the target load.

[0033] In one optional implementation, the capacitor regulation device further includes: a power factor sensing module;

[0034] The power factor sensing module is connected to the dynamic formula module to obtain the current power factor of the preset capacitor and send the current power factor to the dynamic formula module.

[0035] The dynamic formula module is used to transmit the current capacitance value and target temperature to the control module when the current temperature is lower than the target temperature or the current power factor is lower than the third preset threshold.

[0036] In this embodiment, by designing an external heating and temperature control mechanism for the aluminum electrolytic capacitor, the power supply can operate stably under different environments, while also improving the output sustaining time. Furthermore, a power factor sensing module is introduced to obtain the current power factor of the preset capacitor. Based on the current power factor, it determines whether to transmit the current capacitance value and target temperature to the control module for temperature and capacitance regulation of the preset capacitor. This improves the energy storage performance of the preset capacitor without increasing its size and maintains its optimal power factor, thereby improving overall power efficiency.

[0037] In one alternative implementation, the dynamic formula module is also used to generate a predicted capacitance value for a preset capacitance at a preset number of temperatures based on the temperature-capacitance curve.

[0038] The control module is also used to adjust preset control parameters based on the predicted capacitance value.

[0039] In this embodiment, the control module adjusts the preset control parameters based on the predicted capacitance value of the preset capacitor by the dynamic formula module, so as to adapt to the dynamically changing ambient temperature and power requirements, thereby improving the accuracy and efficiency of dynamically regulating the preset capacitor temperature and capacitance value.

[0040] In one alternative implementation, the dynamic formula module is also used for:

[0041] Obtain the correspondence between the preset capacitor value and the output sustain time of the power supply;

[0042] Based on the temperature capacitance value curve and the corresponding relationship, generate the temperature maintenance time curve;

[0043] The target temperature is determined based on the temperature sustaining time curve and the target output sustaining time.

[0044] In a second aspect, the present invention provides a power supply method applied to a capacitor regulation device, the method comprising:

[0045] The system acquires the ambient temperature, actual output power, and target output power of the power supply, and determines the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0046] The first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power are determined. Based on the first difference, the second difference, and the current capacitance value, the capacitance value of the preset capacitor is adjusted to the target capacitance value so that the power supply supplies power to the target load based on the preset capacitor with the capacitance value of the target capacitance value.

[0047] The power supply method provided in this embodiment uses a capacitor regulation device to adjust the capacitance value of the preset capacitor based on a first difference between the target temperature and the ambient temperature, a second difference between the actual output power and the target output power, and the current capacitance value of the preset capacitor in the power supply. This ensures that the capacitance value of the preset capacitor remains at the target value even under environmental influences, improving the performance of the power supply and enabling stable operation in various environments. It also increases the output sustainment time of the power supply. This solves the problem that the aluminum electrolytic capacitor in the power supply is easily affected by the environment, leading to a deterioration in the power supply's performance.

[0048] Thirdly, the present invention provides a testing apparatus, the apparatus comprising:

[0049] The determination module is used to obtain the ambient temperature, actual output power and target output power of the power supply, and to determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0050] The control module is used to determine the first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power. Based on the first difference, the second difference, and the current capacitor value, the module adjusts the capacitance value of the preset capacitor to the target capacitance value, so that the power supply provides power to the target load based on the preset capacitor with the capacitance value of the target capacitance value.

[0051] Fourthly, the present invention provides a computer device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the power supply method of the third aspect above by executing the computer instructions.

[0052] Fifthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to perform the power supply method described in the third aspect.

[0053] In a sixth aspect, the present invention provides a computer program product, including computer instructions for causing a computer to execute the power supply method described in the third aspect. Attached Figure Description

[0054] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0055] Figure 1 This is a schematic diagram of the power supply system according to an embodiment of the present invention;

[0056] Figure 2 This is a schematic diagram of the structure of a capacitor regulation device according to an embodiment of the present invention;

[0057] Figure 3 This is a flowchart illustrating a method for increasing the output hold time of a power supply according to an embodiment of the present invention.

[0058] Figure 4 This is a schematic diagram of the structure of the dynamic formula module according to an embodiment of the present invention;

[0059] Figure 5 This is a schematic diagram of the temperature capacitance value curve according to an embodiment of the present invention;

[0060] Figure 6 This is a schematic diagram of the structure of a PID control module according to an embodiment of the present invention;

[0061] Figure 7 This is a schematic diagram of the structure of a power supply according to an embodiment of the present invention;

[0062] Figure 8 This is a schematic diagram of the structure of another capacitor regulation device according to an embodiment of the present invention;

[0063] Figure 9 This is a schematic diagram of the temperature maintenance time curve according to an embodiment of the present invention;

[0064] Figure 10 This is a schematic flowchart of a power supply method for a capacitor regulation device according to an embodiment of the present invention;

[0065] Figure 11This is a structural block diagram of a testing apparatus according to an embodiment of the present invention;

[0066] Figure 12 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. Detailed Implementation

[0067] 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.

[0068] Aluminum electrolytic capacitors are crucial energy storage components in power supplies (PSTs), and they are widely used. The performance of aluminum electrolytic capacitors directly affects the output hold-up time and power factor of the power supply. Therefore, PSUs (Power Supply Units) are increasingly demanding higher performance requirements for aluminum electrolytic capacitors, especially in high-frequency, high-power applications where high response speed and stability are essential. However, the capacitance value of aluminum electrolytic capacitors is significantly affected by ambient temperature; as the temperature decreases, the capacitance value tends to drop, especially noticeable in low-temperature environments.

[0069] Currently, to address the issue of decreased capacitance in aluminum electrolytic capacitors due to lower temperatures, leading to insufficient output sustainment time during transient input power loss in the power supply unit (PSU) and consequently affecting PSU performance, methods such as increasing capacitor size are employed to enhance capacitance. This relies on careful design and material selection to further improve capacitance. However, these methods do not fully consider the impact of the external environment on capacitor performance, and their effectiveness is often limited. For example, in low-temperature environments, the capacitance of aluminum electrolytic capacitors still decreases, resulting in reduced output sustainment time or worsened power factor (PF) during transient input voltage loss. Furthermore, increasing capacitor size occupies more circuit board space, impacting PSU circuit design.

[0070] Based on the above, this invention provides a power supply system that intelligently heats the aluminum electrolytic capacitors in a power supply, automatically adjusting the capacitor casing temperature to adapt to environmental changes and ensuring the capacitors operate within their optimal temperature range, thereby improving their capacitance and energy storage performance. Through temperature control, the power supply can stably provide the required output sustaining time and power factor (PF) under different temperature conditions based on the regulated aluminum electrolytic capacitors. This achieves the effect of improving the stability and reliability of the power supply without increasing capacitor size, while simultaneously improving overall power efficiency.

[0071] This embodiment provides a power supply system, such as Figure 1 As shown, the system includes: a capacitor regulation device and a power supply;

[0072] The capacitor regulation device is used to obtain the ambient temperature, actual output power and target output power of the power supply, and to determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0073] The capacitor regulation device is used to determine the first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power, and adjusts the capacitance value of the preset capacitor to the target capacitance value based on the first difference, the second difference and the current capacitance value.

[0074] The power supply is used to supply power to the target load based on a preset capacitor with a target capacitance value.

[0075] Specifically, the preset capacitor is an aluminum electrolytic capacitor in the power supply unit (PSU). Because the preset capacitor in the power supply unit is an aluminum electrolytic capacitor, the capacitance value of the aluminum electrolytic capacitor is greatly affected by the ambient temperature. In addition to obtaining the actual output power and target output power of the power supply unit, the capacitor regulation equipment also needs to obtain the ambient temperature of the preset capacitor.

[0076] The capacitor control device determines the required output hold-up time of the PSU, for example, 10ms at full power output. It determines the current capacitance value of the preset capacitor. The output hold-up time is affected by the preset capacitor's value. Based on the required output hold-up time of the PSU, the target capacitance value of the preset capacitor is determined. Because the capacitance of aluminum electrolytic capacitors is affected by ambient temperature, the current capacitance value of the preset capacitor is determined. Based on the known relationship between capacitance and temperature, the target capacitance value that can maintain the required output hold-up time of the PSU is determined. Finally, the target temperature corresponding to the target capacitance value is determined based on the relationship between capacitance and temperature.

[0077] The capacitor regulation device calculates a first difference between the target temperature and the ambient temperature, and a second difference between the actual output power and the target output power. Based on these first and second differences, the device adjusts the capacitance of the preset capacitor to the target capacitance value. For example, if the device includes a heating control circuit, a heating element (such as a heater, heating film, or heating plate) can cover the cylindrical shell of the preset capacitor, heating the shell and increasing the capacitor's temperature, thus increasing its capacitance. Based on the first and second differences, the heating power of the heating element is determined to bring the preset capacitor to the target temperature. At this point, the preset capacitor's capacitance is the current capacitance value. Alternatively, if the preset capacitor in the power supply is an electronically adjustable variable capacitor, the device can directly adjust its capacitance based on the second difference, increasing the second difference to achieve the current capacitance value.

[0078] The power supply converts the input alternating current (AC) into stable direct current (DC) based on a preset capacitance value, and supplies power to the target load, such as various components inside computer equipment or various components inside household appliances.

[0079] The power supply system provided in this embodiment uses a capacitor regulation device to adjust the preset capacitor to the target capacitance value based on a first difference between the target temperature and the ambient temperature, a second difference between the actual output power and the target output power, and the current capacitance value of the preset capacitor in the power supply. This eliminates the influence of the environment on the preset capacitor, improves the performance of the power supply, and enables the power supply to operate stably in different environments. It also increases the output sustaining time of the power supply. This solves the problem that the aluminum electrolytic capacitor in the power supply is easily affected by the environment, leading to a deterioration in the power supply's performance.

[0080] In some alternative implementations, the capacitor regulation device includes: an ambient temperature sensing module, a power sensing module, a control module, a heating module, and a dynamic formula module;

[0081] The ambient temperature sensing module is connected to the control module to acquire the ambient temperature and transmit it to the control module.

[0082] The power sensing module is connected to the control module to obtain the actual output power and the target output power, and then transmits the actual output power and the target output power to the control module.

[0083] The dynamic formula module is connected to the control module and is used to obtain the temperature-capacitance correspondence of the preset capacitor and the current capacitor value. Based on the current capacitor value and the temperature-capacitance correspondence, the target temperature is determined, and the current capacitor value and the target temperature are transmitted to the control module.

[0084] The control module is connected to the heating module and is used to determine the first difference and the second difference. Based on the first difference, the second difference and the current capacitance value, the target heating power of the heating module is determined and the target heating power is transmitted to the heating module.

[0085] The heating module is used to heat the preset capacitor according to the target heating power, and adjust the capacitance value of the preset capacitor to the target capacitance value.

[0086] Specifically, control modules include, for example, PID (proportional-integral-derivative) control modules. Figure 2 As shown, the capacitor regulation device includes: an ambient temperature sensing module (Temp.Sensor), a power sensing module (Power Sensor), a control module (PID Control), a heating module (Heating Module), and a dynamic formula module (Dynamic Formula). Figure 3 A flowchart illustrating methods to improve the output hold-up time of power supplies, combined with... Figure 3 This embodiment will be described.

[0087] The ambient temperature sensing module is connected to the control module and is used to detect the ambient temperature T of the power supply. env and the ambient temperature T env The data is transmitted to the control module, which then determines the heating requirements.

[0088] The power sensing module is connected to the control module and is used to obtain the actual output power P of the PSU. output and target output power P required and the actual output power P output and target output power P required Transmitted to the control module, or the actual output power P output With the target output power P required The comparison is performed, a second difference is generated, and this second difference is transmitted to the control module. For example... Figure 3 As shown, start the power supply system and monitor the output power requirement (P). required ).

[0089] The dynamic formula module is connected to the control module and is used to obtain the temperature-capacitance relationship of the preset capacitor. This relationship can be expressed by a formula that calculates the gain of capacitance value on temperature increase. The output sustain time is affected by the preset capacitor value. Based on the required output sustain time of the PSU, the target capacitor value that can sustain the required output sustain time of the PSU is determined. Because the capacitance value of aluminum electrolytic capacitors is affected by ambient temperature, the target temperature corresponding to the target capacitor value is determined according to the formula for the temperature-capacitance relationship.

[0090] The control module is connected to the heating module and is used to determine the first difference ΔT and the second difference e(t). ΔT represents the error at time T, and the error is usually defined as the difference between the set temperature and the actual temperature. Based on the first difference ΔT, the second difference e(t), and the current capacitor value C(T), the target heating power of the heating module is determined. For example, the control module calculates and adjusts the heating power P based on the temperature error and power error e(t). heat By using PID control formulas to adjust the parameters Kp, Ki, and Kd, dynamic control is achieved, generating an appropriate heating power P. heat , to target heating power P heat Transmitted to the heating module to drive the heating module at P heat Heat the preset capacitor. P heat This represents the rate of heat generation or consumption at time t. This is the amount of heat the system needs to regulate. For example... Figure 3 As shown, calculate the power error e(t) = P required -P output PID control calculates heating power P heat The heating output is dynamically adjusted based on e(t) and ΔT. Additionally, the capacitor control device is used to check the maintenance effect and requirements; if they are met, the process ends; otherwise, it is readjusted.

[0091] The heating module is used to receive heating power P from the PID control module. heat According to P heat The casing of the preset capacitor is heated to raise its operating temperature to the target temperature T. target Heating control is achieved by adjusting the preset capacitor value to the target capacitance value, ultimately achieving the desired capacitance gain effect.

[0092] In this embodiment, a target heating power is determined, and the heating module heats the preset capacitor according to the target heating power. The capacitance value of the preset capacitor is adjusted to the target capacitance value so that the preset capacitor can adapt to environmental changes and ensure that the aluminum electrolytic capacitor operates within the optimal temperature range, thereby improving its capacitance and energy storage performance.

[0093] In some optional implementations, the ambient temperature sensing module acquires the ambient temperature and transmits it to the control module, including:

[0094] Obtain the ambient temperature of the power supply;

[0095] When the ambient temperature is lower than the first preset threshold, or when the output holding voltage of the power supply is greater than the second preset threshold, the ambient temperature is transmitted to the control module.

[0096] Specifically, the ambient temperature sensing module includes a temperature sensor, and may also include a microcontroller (MCU), a single-chip microcomputer, or other components with certain logic processing capabilities to determine whether the collected ambient temperature needs to be sent to the ambient temperature sensing module to detect the ambient temperature T outside the power supply. env External ambient temperature T env T represents the ambient temperature at which the power supply actually operates. env Generally, the operating temperature range is 0℃-50℃. Some power supplies have even stricter operating temperature requirements, therefore, T env The numerical range is set according to actual needs.

[0097] The ambient temperature sensing module determines whether the ambient temperature T needs to be changed. env The signal is sent to the control module, which determines the heating requirement. The ambient temperature sensing module can determine whether the ambient temperature T needs to be increased based on factors such as threshold settings, the stability of the heating module, and the ability to maintain the preset capacitor value at the target temperature. env Send to the control module. For example: set a first preset threshold temperature, such as 0℃, 5℃, or other values ​​that meet actual needs. If the ambient temperature T... env If the ambient temperature is less than the first preset threshold, it indicates that the capacitance value of the subsequent preset capacitor may drop significantly, affecting the performance of the power supply. Therefore, the ambient temperature is transmitted to the control module. Conversely, if the ambient temperature is higher than or equal to the first preset threshold and can be stably maintained at the initial design value, no adjustment is made or the temperature is maintained stably, and there is no need to transmit the ambient temperature to the control module. Under certain operating conditions, it is also necessary to adjust the temperature of the preset capacitor, such as determining whether the output holding voltage of the power supply is greater than the second preset threshold. The second preset threshold is, for example, 10V, 11V or other values ​​that meet the actual requirements. If it is greater, it means that a higher output holding voltage is required when the PSU is powered off, and the temperature of the preset capacitor needs to be adjusted, and the ambient temperature is transmitted to the control module.

[0098] In some optional implementations, the capacitance regulation device further includes: a capacitance temperature sensing module;

[0099] The capacitor temperature sensing module is connected to the dynamic formula module to obtain the current temperature of the preset capacitor and send the current temperature to the dynamic formula module.

[0100] The dynamic formula module acquires the temperature-capacitance correspondence of a preset capacitor and the current capacitor value. Based on the current capacitor value and the temperature-capacitance correspondence, it determines the target temperature and transmits both the current capacitor value and the target temperature to the control module, including:

[0101] Obtain the capacitance value of a preset capacitor at a preset number of temperatures, and generate a temperature-capacitance curve based on the preset number of temperatures and capacitance values. The temperature-capacitance curve contains the correspondence between temperature and capacitance values.

[0102] The target temperature is determined based on the correspondence between the current capacitance value and the temperature capacitance value. If the current temperature is lower than the target temperature, the current capacitance value and the target temperature are transmitted to the control module.

[0103] Specifically, such as Figure 2 As shown, the capacitor regulation device also includes a capacitor temperature sensing module (CapTemp.Sensor). The dynamic formula module is responsible for calculating the capacitance gain of the aluminum electrolytic capacitor at different temperatures based on environmental conditions and adjusting the heating requirements accordingly. The dynamic formula module can be, for example, a microcontroller, a single-chip microcomputer, a field-programmable gate array (FPGA), or a microprocessor (MPU) capable of performing complex logic operations. The dynamic formula module is used to obtain the temperature-capacitance value correspondence of a preset capacitor and the current capacitance value, determine the target temperature based on the current capacitance value and the temperature-capacitance value correspondence, and transmit the current capacitance value and target temperature to the control module. For ease of explanation, the dynamic formula module is divided into multiple functional modules based on the function of the logic code, such as a temperature gain calculation module and a dynamic temperature control module. Figure 4 As shown.

[0104] The capacitor temperature sensing module is connected to the dynamic formula module to detect the capacitor temperature status, obtain the current temperature of the preset capacitor, and send the current temperature to the dynamic formula module.

[0105] The temperature gain calculation module acquires the capacitance values ​​of a preset capacitor at a preset number of temperatures. The preset number of temperatures is, for example, multiple temperature values ​​within the range of 0℃-50℃, and the preset number may be, for example, 10, 15, 20, or other values ​​that meet actual needs. The module acquires the capacitance value of the preset capacitor at each of the above temperatures and generates a temperature-capacitance value curve based on the preset number of temperatures and capacitance values. The temperature-capacitance value curve shows the correspondence between temperature and capacitance values, such as... Figure 5 As shown, assuming the initial capacitance value C0 of the preset capacitor is 470μF at room temperature of 20℃, the rate of change of capacitance value can be obtained by calculation or by referring to the temperature capacitance value curve based on the effect of temperature.

[0106] The temperature dynamic adjustment module is used to dynamically calculate the heating temperature difference ΔT = T target -Tenv The system adjusts the temperature control strategy based on environmental conditions. It determines the target temperature based on the current capacitance value and the temperature-capacitance correspondence. If the current temperature is lower than the target temperature, the current capacitance value and target temperature are transmitted to the control module for power-temperature adjustment by the PID control module. For example, if the PSU's ambient temperature is 0℃-50℃, and the capacitor's operating temperature is -60℃-105℃, the capacitance value is adjusted according to the temperature-capacitance curve to adjust the heating temperature as needed based on the ambient temperature. During the adjustment process, if the preset capacitor temperature is not lower than the target temperature, the code executes commands to continue adjusting the preset capacitor temperature until the requirement is met.

[0107] In addition, the temperature gain calculation module is also used to calculate the target temperature T. target Ambient temperature T env The initial capacitance value C0 is calculated to determine the impact of temperature increase on the capacitance value. Based on the capacitance gain, the heating power is adjusted via a PID control module.

[0108] In this embodiment, as long as the current temperature of the preset capacitor is lower than the target temperature, the dynamic formula module transmits the current capacitance value and the target temperature to the control module. The control module then dynamically adjusts the temperature of the preset capacitor to increase its capacitance value and improve the stability and efficiency of the power supply.

[0109] In some optional implementations, the control module determines a first difference, determines a target heating power for the heating module based on the first difference, a second difference, and the current capacitance value, and transmits the target heating power to the heating module, including:

[0110] Determine the first difference between the target temperature and the ambient temperature;

[0111] The system obtains the preset control parameters and the initial capacitance value C0 of the preset capacitor. Based on the first difference, the second difference, the preset control parameters, the initial capacitance value, and the current capacitance value, it determines the target heating power of the heating module and transmits the target heating power to the heating module.

[0112] Specifically, control modules include, for example, PID control modules. Dynamic formula modules may include at least one component capable of performing relatively complex logical operations and having control functions, such as microcontrollers, single-chip microcomputers, microprocessors, or programmable logic controllers (PLCs).

[0113] The control module determines the first difference, and based on the first difference, the second difference, and the current capacitor value, determines the target heating power of the heating module. It then transmits the target heating power to the logic code of the heating module. For ease of explanation, the control module is divided into multiple functional modules according to the function of the logic code, such as a power error calculation module and a PID control algorithm module. Figure 6 As shown.

[0114] The power error calculation module is used to calculate the first difference ΔT between the target temperature and the ambient temperature, for example: ΔT = T target -T env .

[0115] The control algorithm module is used to obtain preset control parameters and the initial capacitance value of the preset capacitor. Preset control parameters include, for example, PID control parameters, including K... p Proportional gain determines the system's response to the current error; the proportional control term indicates that the system immediately adjusts the heat based on the current error. i Integral gain is the integral control term, which indicates that the system adjusts the heat based on the accumulated error over all past times. Integral control helps eliminate steady-state error; K d The derivative gain (DG) is a differential control term that indicates how the system adjusts the heat based on the rate of change of the error. DG helps the system respond quickly to rapidly changing errors. The control algorithm module obtains temperature compensation coefficients, such as α and β, whose specific values ​​are set according to actual requirements.

[0116] The target heating power P is calculated by inputting the temperature compensation coefficient, the first difference, the second difference, the preset control parameters, the initial capacitance value, and the current capacitance value into the preset control formula. heat The preset control formula is shown in formula (1).

[0117]

[0118] Among them, K p K i and K d The preset control parameters are: α and β are temperature compensation coefficients, e(t) is the second difference, Δt is the first difference, C(T) is the current capacitance value, and C0 is the initial capacitance value. This indicates the effect of temperature increase on capacitance gain.

[0119] Formula (1) is an expression for a PID (Proportional-Integral-Derivative) controller, used here to regulate the heat generation or consumption in a temperature control system. By adjusting the proportional, integral, and derivative gains, the system can reach the set temperature more stably and accurately. This adjustment method, which involves calculating and controlling the received data, serves as a design practice.

[0120] In this embodiment, the control module determines the target heating power of the heating module and transmits the target heating power to the heating module to heat the preset capacitor, raising its temperature and causing its capacitance value to reach the target capacitance value. This achieves adaptive gain adjustment of the preset capacitor's capacitance value in temperature and power control.

[0121] In some alternative implementations, the power supply includes: a filter module, a rectifier module, a power factor correction module, a pulse width modulation module, a transformer module, an output rectifier module, a reverse current protection module, and a DC output module;

[0122] The power factor correction module includes a preset capacitor;

[0123] The DC output module is used to output DC voltage to the target load to power the target load.

[0124] Specifically, this embodiment designs a heating control circuit as a heating module, in which heating devices, such as heaters, heating films, and heating elements, are installed. The heating devices enclose the cylindrical shell of a preset capacitor used for energy storage in the power supply. The preset capacitor, for example, is an aluminum electrolytic capacitor. Figure 7 C2 in the medium power factor correction module. It uses PID control to dynamically adjust the heating power to cope with different temperature and load conditions, and maximizes the preset capacitor value to achieve stable output maintenance time.

[0125] like Figure 7 As shown, a power supply unit (PSU) includes: a filter module, a rectifier module, a power factor correction module, a pulse width modulation module, a transformer module, an output rectifier module, a reverse current protection module, and a DC output module. The PSU converts AC input to DC output and supplies power to the load resistor R (Load). The AC input enters the PSU through L (Live Wire) and N (Neutral Wire).

[0126] The filtering module filters out electromagnetic interference (EMI) using an EMI filter, a device used to reduce or eliminate unwanted electromagnetic energy generated in electronic equipment. The rectifier module uses a BD bridge rectifier to convert AC to pulsating DC. C1 is the capacitor in the power supply. The "Bypass Diode" power factor correction module, a circuit consisting of inductor L1, diode D1, switch Q1, and capacitor C2, improves the power factor; capacitor C2 is a preset capacitor that requires temperature regulation. The pulse width modulation module regulates the output voltage by controlling the on and off times of switches (Q2 and Q3). The transformer module uses transformer T1 to step down the voltage and provide electrical isolation. The output rectifier module uses diodes (D3 and D4) to rectify the AC to DC again. The reverse current protection module (Oring-FET) uses MOSFET Q4 to prevent reverse current. DC output module: provides a stable DC voltage to the load, such as a load resistor R.

[0127] In some optional implementations, the capacitor regulation device further includes: a power factor sensing module;

[0128] The power factor sensing module is connected to the dynamic formula module to obtain the current power factor of the preset capacitor and send the current power factor to the dynamic formula module.

[0129] The dynamic formula module is used to transmit the current capacitance value and target temperature to the control module when the current temperature is lower than the target temperature or the current power factor is lower than the third preset threshold.

[0130] Specifically, such as Figure 8 As shown, the capacitor regulation device also includes a power factor sensing module (PF.Sensor). In the power supply, increasing the preset capacitor value can effectively compensate for reactive power Q, reduce the phase angle θ, and thus improve the power factor. The power factor is directly related to the temperature and capacitance of the heated aluminum electrolytic capacitor. Therefore, to further improve the stability of the aluminum electrolytic capacitor, the temperature control heating technology of this solution can be integrated into the PFC design to achieve a more stable power factor (PF>0.95) by dynamically adjusting the heating state of the output capacitor.

[0131] The above embodiments dynamically adjust the temperature T envThis influences the capacitance value C(t) of the preset capacitor. This, in turn, controls the power factor (PF) to meet the needs of different load changes, achieving an optimal balance between dynamically adjusting the capacitance value and output power. In this embodiment, a power factor sensing module is added to the capacitor regulation device. Simultaneously, the current power factor of the preset capacitor is detected, and the current power factor is sent to the dynamic formula module.

[0132] When the current temperature is lower than the target temperature, the dynamic formula module indicates that the preset capacitor's temperature is too low, which will cause a significant drop in the preset capacitor's capacitance value, affecting the PSU's performance. The current capacitance value and target temperature are transmitted to the control module, which then adjusts the preset capacitor's temperature to increase its capacitance value. The third preset threshold is, for example, 0.95, 0.90, or other values ​​that meet the requirements. If the current power factor is lower than the third preset threshold, it indicates that the power factor of the preset capacitor in the PSU is too low, causing PSU performance instability. Adjustment of the preset capacitor is required, and the current capacitance value and target temperature are again transmitted to the control module.

[0133] In this embodiment, by designing an external heating and temperature control mechanism for the aluminum electrolytic capacitor, the power supply can operate stably under different environments, while also improving the output sustaining time. Furthermore, a power factor sensing module is introduced to obtain the current power factor of the preset capacitor. Based on the current power factor, it determines whether to transmit the current capacitance value and target temperature to the control module for temperature and capacitance regulation of the preset capacitor. This improves the energy storage performance of the preset capacitor without increasing its size and maintains its optimal power factor, thereby improving overall power efficiency.

[0134] In some optional implementations, the dynamic formula module is also used to generate a predicted capacitance value for a preset capacitance at a preset number of temperatures based on a temperature-capacitance curve.

[0135] The control module is also used to adjust preset control parameters based on the predicted capacitance value.

[0136] Specifically, such as Figure 6 As shown, based on the corresponding logic code, another functional module can be divided into the control module, such as the Adaptive PID Adjustment module, which is the control parameter adjustment module. Figure 4 As shown, based on the corresponding logic code, another functional module can be divided into the dynamic formula module, such as the capacity prediction module.

[0137] The capacitance prediction module is used to predict the capacitance change of aluminum electrolytic capacitors at different temperatures based on the output of the temperature gain calculation module (such as a temperature-capacitance curve), generating predicted capacitance values ​​for a preset number of temperatures. The preset number of temperatures is, for example, multiple temperature values ​​within the range of 0℃-50℃, and the preset quantity is, for example, 10, 15, 20, or other values ​​that meet actual needs. Figure 5 As shown, at a temperature of 20℃, the predicted capacitance is the initial capacitance value C0; at a temperature of -40℃, the predicted capacitance is (100-8)% of the initial capacitance value C0, i.e., the predicted capacitance is C0×92%; at a temperature of 80℃, the predicted capacitance is (100+7)% of the initial capacitance value C0, i.e., the predicted capacitance is C0×107%. For details, please refer to [link to relevant documentation]. Figure 9 This will not be elaborated upon here.

[0138] In addition, because electrolytic capacitors will experience capacitance degradation over long-term use, the capacitance prediction module can also predict the rate of capacitance degradation by using the duration of power outage and the capacitance changes obtained at different temperatures to form a trend.

[0139] The control parameter adjustment module is used to adjust preset control parameters based on the predicted capacitor value, dynamically adjusting the heating intensity. Adjustment methods include, for example, using a code lookup table to adjust according to temperature and power requirements. When the power is high, the holding time is shortened, and automatic temperature control is implemented. This solution is designed for high power and low-temperature environments, limiting the adjustment range during power outages. Automatically adjusted preset control parameters include, for example, PID parameters such as K... p K i and K d To adapt to dynamically changing ambient temperature and power requirements.

[0140] In this embodiment, the control module adjusts the preset control parameters based on the predicted capacitance value of the preset capacitor by the dynamic formula module, so as to adapt to the dynamically changing ambient temperature and power requirements, thereby improving the accuracy and efficiency of dynamically regulating the preset capacitor temperature and capacitance value.

[0141] In some alternative implementations, the dynamic formula module is also used for:

[0142] Obtain the correspondence between the preset capacitor value and the output sustain time of the power supply;

[0143] Based on the temperature capacitance value curve and the corresponding relationship, generate the temperature maintenance time curve;

[0144] The target temperature is determined based on the temperature sustaining time curve and the target output sustaining time.

[0145] Specifically, the dynamic formula module obtains the correspondence between the capacitance value of the preset capacitor and the output sustaining time of the power supply. For example, the correspondence is: output sustaining time = output sustaining voltage ÷ output sustaining current × capacitance value of the preset capacitor, or other relationships that meet actual needs.

[0146] Temperature capacitance curve example: Figure 5 The temperature-capacitance curve is shown. The dynamic formula module determines the corresponding capacitance value based on the vertical coordinate of each sampling point in the temperature-capacitance curve, and then calculates the corresponding output duration based on this capacitance value and the corresponding relationship. This modifies the vertical coordinate of the temperature-capacitance curve from capacitance change value to output duration, generating a temperature duration curve, as shown. Figure 9 As shown, the preset capacitor temperature is 50℃, corresponding to an output sustain time of 11.15ms; the preset capacitor temperature is 70℃, corresponding to an output sustain time of 11.42ms. See details below. Figure 9 , Figure 9 The target output duration is 1 ms, which will not be elaborated here.

[0147] The dynamic formula module determines the target temperature based on the temperature sustaining time curve and the target output sustaining time. For example, if the target output sustaining time is 11.4ms, then... Figure 9 The numerical curve of the output duration can be used to determine the corresponding target temperature as 68℃.

[0148] Taking an 800W power supply (PSU) as an example, this power supply uses a 450VDC / 470uF aluminum electrolytic capacitor. Ignoring tolerance issues, with the output at 100% load, the sustain time can be calculated to be 11ms based on the following formula and design values.

[0149] P = 0.5 × C × ΔV 2 ×f (2)

[0150] Where P is power (W), C is capacitance (μF), ΔV is voltage change (V), and f is frequency (Hz).

[0151] Based on the temperature-to-capacity gain formula in the above steps and reference... Figure 5 The curve change can be used to calculate the capacitance change at different temperatures and assess its impact on output sustain time, as shown in the actual output. Figure 9 The temperature-capacitance value change curve and the sustaining time curve shown demonstrate the output sustaining time of the capacitor at different temperatures, maximizing the functional benefits of the aluminum electrolytic capacitor in use.

[0152] In some optional implementations, the process of the capacitor regulation device determining the current capacitance value of a preset capacitor in the power supply may include: the capacitor regulation device applying a bias voltage to the preset capacitor and loading an AC power supply; the capacitor regulation device obtaining instantaneous AC voltage and current values ​​across the preset capacitor; performing numerical processing based on the instantaneous value data to obtain the current capacitance value of the capacitor, and may also obtain parameters such as the loss value, equivalent series resistance, and reactance of the preset capacitor.

[0153] The capacitor temperature sensing module includes a surface-mount thermistor or a temperature sensor. The temperature sensor can monitor the temperature near a preset capacitor and directly use that temperature as the current temperature of the preset capacitor. Alternatively, the relationship between the temperature collected by the temperature sensor and the actual temperature of the preset capacitor can be determined in advance, and then, when the current temperature of the preset capacitor is collected in real time, the current temperature of the preset capacitor can be determined based on this relationship and the nearby temperature. The surface-mount thermistor is directly attached to the surface of the preset capacitor or its vicinity, allowing for direct and more accurate measurement of the current temperature of the preset capacitor.

[0154] In this embodiment, the current capacitance value and current temperature of the preset capacitor are collected, and the data acquisition method is stable, reliable, and highly accurate. The preset capacitor can also be monitored online in real time, providing accurate preset capacitor information to the control module and dynamic formula module in the capacitor regulation equipment, facilitating temperature and capacitance regulation of the preset capacitor.

[0155] According to an embodiment of the present invention, a test embodiment is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be performed in a capacitor regulation device with data processing capabilities. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here.

[0156] This embodiment provides a power supply method applied to a capacitor regulation device. Figure 10 This is a flowchart of a power supply method according to an embodiment of the present invention, such as... Figure 10 As shown, the process includes the following steps:

[0157] Step S1001: Obtain the ambient temperature, actual output power, and target output power of the power supply, and determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0158] Specifically, the preset capacitor is an aluminum electrolytic capacitor in the power supply unit (PSU). Because the preset capacitor in the power supply unit is an aluminum electrolytic capacitor, the capacitance value of the aluminum electrolytic capacitor is greatly affected by the ambient temperature. In addition to obtaining the actual output power and target output power of the power supply unit, the capacitor regulation equipment also needs to obtain the ambient temperature of the preset capacitor.

[0159] The capacitor control device determines the required output hold-up time of the PSU, for example, 10ms at full power output. It determines the current capacitance value of the preset capacitor. The output hold-up time is affected by the preset capacitor's value. Based on the required output hold-up time of the PSU, the target capacitance value of the preset capacitor is determined. Because the capacitance of aluminum electrolytic capacitors is affected by ambient temperature, the current capacitance value of the preset capacitor is determined. Based on the known relationship between capacitance and temperature, the target capacitance value that can maintain the required output hold-up time of the PSU is determined. Finally, the target temperature corresponding to the target capacitance value is determined based on the relationship between capacitance and temperature.

[0160] Step S1002: Determine the first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power. Based on the first difference, the second difference, and the current capacitor value, adjust the value of the preset capacitor to the target capacitor value so that the power supply supplies power to the target load based on the preset capacitor with the target capacitor value.

[0161] Specifically, the capacitor control device calculates a first difference between the target temperature and the ambient temperature, and a second difference between the actual output power and the target output power. Based on the first and second differences, the capacitor control device adjusts the capacitance of the preset capacitor to the target capacitance value. For example, the capacitor control device may include a heating control circuit. A heating device (such as a heater, heating film, or heating element) in the heating control circuit covers the cylindrical shell of the preset capacitor, heating the shell and increasing the temperature of the preset capacitor, thereby increasing its capacitance. Based on the first and second differences, the heating power of the heating device is determined to bring the preset capacitor to the target temperature. At this point, the capacitance of the preset capacitor is the current capacitance value. Alternatively, if the preset capacitor in the power supply is an electronically adjustable variable capacitor, the capacitor control device can directly adjust the capacitance of the variable capacitor based on the second difference, increasing the second difference to achieve the current capacitance value.

[0162] The power supply converts the input alternating current (AC) into stable direct current (DC) based on a preset capacitance value, and supplies power to the target load, such as various components inside computer equipment or various components inside household appliances.

[0163] The power supply method provided in this embodiment uses a capacitor regulation device to adjust the capacitance value of the preset capacitor based on a first difference between the target temperature and the ambient temperature, a second difference between the actual output power and the target output power, and the current capacitance value of the preset capacitor in the power supply. This ensures that the capacitance value of the preset capacitor remains at the target value even under environmental influences, improving the performance of the power supply and enabling stable operation in various environments. It also increases the output sustainment time of the power supply. This solves the problem that the aluminum electrolytic capacitor in the power supply is easily affected by the environment, leading to a deterioration in the power supply's performance.

[0164] This embodiment also provides a testing apparatus for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0165] This embodiment provides a testing device, such as... Figure 11 As shown, it includes:

[0166] The determination module 1101 is used to obtain the ambient temperature, actual output power and target output power of the power supply, and to determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value.

[0167] The control module 1102 is used to determine the first difference between the target temperature and the ambient temperature, and the second difference between the actual output power and the target output power. Based on the first difference, the second difference, and the current capacitance value, the control module adjusts the capacitance value of the preset capacitor to the target capacitance value so that the power supply provides power to the target load based on the preset capacitor with the capacitance value of the target capacitance value.

[0168] Further functional descriptions of the above modules are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0169] The testing device in this embodiment is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0170] This invention also provides a computer device having the above-described features. Figure 11 The test apparatus shown.

[0171] Please see Figure 12 , Figure 12This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 12 As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 12 Take a processor 10 as an example.

[0172] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0173] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0174] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0175] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0176] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0177] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0178] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0179] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined in this application.

Claims

1. A power supply system, characterized in that, The system includes: a capacitor regulation device and a power supply; The capacitor regulation device is used to obtain the ambient temperature, actual output power and target output power of the power supply, and to determine the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value. The capacitor regulation device is used to determine a first difference between the target temperature and the ambient temperature, and a second difference between the actual output power and the target output power, and to adjust the capacitance value of the preset capacitor to the target capacitance value based on the first difference, the second difference, and the current capacitance value. The power supply is used to supply power to the target load based on a preset capacitor with a capacitance value of the target capacitance value; The capacitor regulation device includes: an ambient temperature sensing module, a power sensing module, a control module, a heating module, and a dynamic formula module; The ambient temperature sensing module is connected to the control module and is used to acquire the ambient temperature and transmit the ambient temperature to the control module. The power sensing module is connected to the control module and is used to acquire the actual output power and the target output power, and transmit the actual output power and the target output power to the control module. The dynamic formula module is connected to the control module and is used to obtain the temperature-capacitance value correspondence of the preset capacitor and the current capacitance value, determine the target temperature according to the current capacitance value and the temperature-capacitance value correspondence, and transmit the current capacitance value and the target temperature to the control module. The control module is connected to the heating module and is used to determine the first difference and the second difference, determine the target heating power of the heating module based on the first difference, the second difference and the current capacitance value, and transmit the target heating power to the heating module. The heating module is used to heat the preset capacitor according to the target heating power, and adjust the capacitance value of the preset capacitor to the target capacitance value.

2. The system according to claim 1, characterized in that, The ambient temperature sensing module acquires the ambient temperature and transmits the ambient temperature to the control module, including: Obtain the ambient temperature of the power supply; If the ambient temperature is less than a first preset threshold, or if the output holding voltage of the power supply is greater than a second preset threshold, the ambient temperature is transmitted to the control module.

3. The system according to claim 1, characterized in that, The capacitance regulation device further includes: a capacitor temperature sensing module; The capacitor temperature sensing module is connected to the dynamic formula module and is used to obtain the current temperature of the preset capacitor and send the current temperature to the dynamic formula module. The dynamic formula module acquires the temperature-capacitance correspondence of the preset capacitor and the current capacitance value, determines the target temperature based on the current capacitance value and the temperature-capacitance correspondence, and transmits the current capacitance value and the target temperature to the control module, including: Obtain the capacitance value of the preset capacitor at a preset number of temperatures, and generate a temperature-capacitance value curve based on the preset number of temperatures and the capacitance value, wherein the temperature-capacitance value curve contains the correspondence between the temperature and capacitance values; The target temperature is determined based on the correspondence between the current capacitance value and the temperature capacitance value. If the current temperature is lower than the target temperature, the current capacitance value and the target temperature are transmitted to the control module.

4. The system according to claim 1, characterized in that, The control module determines the first difference, determines the target heating power of the heating module based on the first difference, the second difference, and the current capacitance value, and transmits the target heating power to the heating module, including: Determine the first difference between the target temperature and the ambient temperature; Obtain preset control parameters and the initial capacitance value of the preset capacitor, and determine the target heating power of the heating module based on the first difference, the second difference, the preset control parameters, the initial capacitance value, and the current capacitance value, and transmit the target heating power to the heating module.

5. The system according to claim 1, characterized in that, The power supply includes: a filter module, a rectifier module, a power factor correction module, a pulse width modulation module, a transformer module, an output rectifier module, a reverse current protection module, and a DC output module; The power factor correction module includes the preset capacitor; The DC output module is used to output DC voltage to the target load to power the target load.

6. The system according to claim 3, characterized in that, The capacitor regulation device further includes: a power factor sensing module; The power factor sensing module is connected to the dynamic formula module and is used to obtain the current power factor of the preset capacitor and send the current power factor to the dynamic formula module. The dynamic formula module is used to transmit the current capacitance value and the target temperature to the control module when the current temperature is less than the target temperature or the current power factor is less than a third preset threshold.

7. The system according to claim 3, characterized in that, The dynamic formula module is also used to generate a predicted capacitance value of the preset capacitance at a preset number of temperatures based on the temperature capacitance value curve. The control module is also used to adjust preset control parameters based on the predicted capacitance value.

8. The system according to claim 3, characterized in that, The dynamic formula module is also used for: Obtain the correspondence between the capacitance value of the preset capacitor and the output duration of the power supply; Based on the temperature capacitance value curve and the corresponding relationship, a temperature maintenance time curve is generated; The target temperature is determined based on the temperature maintenance time curve and the target output maintenance time.

9. A power supply method, characterized in that, The method is applied to the capacitor regulation device according to any one of claims 1-8, and the method includes: The ambient temperature, actual output power, and target output power of the power supply are obtained, and the current capacitance value of the preset capacitor in the power supply and the target temperature corresponding to the current capacitance value are determined. A first difference between the target temperature and the ambient temperature, and a second difference between the actual output power and the target output power are determined. Based on the first difference, the second difference, and the current capacitance value, the capacitance value of the preset capacitor is adjusted to the target capacitance value, so that the power supply supplies power to the target load based on the preset capacitor with the capacitance value of the target capacitance value.

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