Power supply hot backup control assembly and power supply equipment

Abstract

The utility model discloses a power supply hot backup control assembly and power supply equipment, and relates to the technical field of power supplies. The power supply hot backup control assembly comprises an AC input end, a communication circuit, a plurality of power supply modules, a detection control circuit and a main control circuit. The detection control circuit detects the operation state of each power supply module through the communication circuit, can obtain the operation state information of each power supply module, and controls the power-on / power-off of the corresponding power supply module according to the operation state information. Therefore, independent power-on / power-off control of the power supply module can be realized, and the fault response speed is relatively high. And the main control circuit determines the number of the power supply modules working normally according to the multiple pieces of operation state information, and controls the output power of the multiple power supply modules through the communication circuit based on a preset power demand and the number of the power supply modules working normally. Therefore, the power output of the plurality of power supply modules can be distributed in a balanced manner, and the power demand of the load can be efficiently met.

Description

Technical Field

[0001] This utility model relates to the field of power supply technology, and in particular to a power supply hot backup control component and device. Background Technology

[0002] In industrial fields with high precision and high reliability requirements, such as electrolysis, electroplating, and semiconductor crystal growth, DC power supply systems serve as critical power supply equipment, undertaking the task of providing constant power or constant current. Among these, power supply reliability is paramount; any power supply failure or insufficient output capacity can lead to production downtime, equipment damage, decreased product quality, and even significant economic losses.

[0003] To improve the reliability and fault tolerance of DC power supply systems, redundancy design has become a key solution. Common redundancy designs typically employ a simple parallel connection of multiple power modules to ensure that if one or more power modules fail, the remaining modules can continue to power the load. However, this simple parallel connection method can easily lead to uneven output power distribution among the power modules and a slow response time to power failures. Utility Model Content

[0004] The main purpose of this utility model is to provide a power supply hot backup control component, which aims to solve the problems of uneven output power distribution among power modules and slow response speed to power failures in existing DC power supply systems.

[0005] To achieve the above objectives, the power supply hot backup control component proposed in this utility model includes an AC input terminal, a communication circuit, multiple power supply modules, a detection and control circuit, and a main control circuit.

[0006] The power input terminals of the plurality of power modules are connected to the AC input terminal, and the power output terminals of the plurality of power modules are used for connecting to the load; the plurality of power modules are used to convert AC power into DC power output; wherein, the plurality of power modules include at least one main power module and at least one auxiliary power module;

[0007] The detection and control circuit is connected to the multiple power modules one by one through the communication circuit; the detection and control circuit is used to acquire multiple operating status information of the multiple power modules, and control the power module to turn on / off according to the operating status information.

[0008] The main control circuit is connected to each of the power modules one by one through the communication circuit, and the main control circuit is also connected to the detection and control circuit; the main control circuit is used to control the output power of the power modules according to the multiple operating status information and preset power requirements.

[0009] In one embodiment, the power module includes:

[0010] A power input interface, one end of which is connected to the AC input terminal;

[0011] A power output interface, one end of which is used for connecting the load;

[0012] A signal interaction interface, one end of which is connected to the communication circuit;

[0013] A switching circuit, one end of which is connected to the other end of the power input interface; the switching circuit is used to control the connection / deactivation of the AC power supply.

[0014] A voltage conversion circuit, wherein the input terminal of the voltage conversion circuit is connected to the other end of the switching circuit, and the output terminal of the voltage conversion circuit is connected to the other end of the power output interface, the voltage conversion circuit being used to convert the AC power supply into DC power output;

[0015] A power control circuit is provided, which is connected to the controlled terminal of the switching circuit, the controlled terminal of the voltage conversion circuit, and the other end of the signal interaction interface; the power control circuit is used to control the operation of the switching circuit and the voltage conversion circuit.

[0016] In one embodiment, the power module further includes:

[0017] A voltage detection circuit is provided, wherein the detection terminal of the voltage detection circuit is connected to the output terminal of the voltage conversion circuit, and the voltage detection circuit is used to detect the output voltage value of the voltage conversion circuit and output a corresponding voltage detection signal.

[0018] A current detection circuit is connected in series between the output terminal of the voltage conversion circuit and the other end of the power output interface. The current detection circuit is used to detect the output current value of the voltage conversion circuit and output a corresponding current detection signal.

[0019] The power control circuit is also used to control the operation of the switching circuit and the voltage conversion circuit according to the voltage detection signal and the current detection signal, and to output the operating status information based on the voltage detection signal and the current detection signal.

[0020] In one embodiment, the AC power supply is a three-phase AC power supply; the voltage conversion circuit includes:

[0021] A three-phase rectifier, wherein the input terminal of the three-phase rectifier is connected to the other end of the switching circuit, and the controlled terminal of the three-phase rectifier is connected to the power control circuit, and the three-phase rectifier is used to convert the three-phase AC power supply into DC power output;

[0022] A transformer, the input end of which is connected to the output end of the three-phase rectifier, the output end of which is connected to the other end of the power output interface, and the controlled end of which is connected to the power control circuit, the transformer being used to transform the power output from the three-phase rectifier before outputting it.

[0023] In one embodiment, the switching circuit includes a circuit breaker, one end of which is connected to the other end of the power input interface, the other end of which is connected to the input terminal of the voltage conversion circuit, and the controlled terminal of the circuit breaker is connected to the power control circuit.

[0024] In one embodiment, the power module further includes an overcurrent protection circuit, which is connected in series between the other end of the power input interface and one end of the switching circuit. The overcurrent protection circuit is used to disconnect the connection between the AC input terminal and the switching circuit when the current value of the AC power supply is greater than a preset current value.

[0025] In one embodiment, the power hot backup control component further includes:

[0026] fan;

[0027] A temperature detection circuit is provided, the signal output terminal of which is connected to the main control circuit. The temperature detection circuit is used to detect the ambient temperature of multiple power modules and output corresponding temperature detection signals.

[0028] A fan drive circuit, wherein the power supply terminal of the fan drive circuit is connected to the AC input terminal, the drive output terminal of the fan drive circuit is connected to the fan, and the controlled terminal of the fan drive circuit is connected to the main control circuit;

[0029] The main control circuit is also used to control the operation of the fan drive circuit based on the temperature detection signal.

[0030] In one embodiment, the temperature detection circuit includes:

[0031] A temperature sensor is used to collect the ambient temperature of multiple power modules and output a corresponding temperature detection signal.

[0032] A signal modulation circuit is connected to the temperature sensor, and the signal modulation circuit is used to amplify and filter the temperature detection signal before outputting it.

[0033] An analog-to-digital converter circuit is provided, which is connected to the signal modulation circuit. The analog-to-digital converter circuit is used to convert the temperature detection signal into a digital signal and then output it.

[0034] In one embodiment, the signal modulation circuit includes a first amplifier, a first resistor, a first capacitor, a second resistor, and a second capacitor, and the analog-to-digital conversion circuit includes a third resistor, a fourth resistor, a third capacitor, and an analog-to-digital conversion chip;

[0035] In this configuration, the inverting input terminal of the first amplifier, one end of the first capacitor, and one end of the first resistor are connected to the signal output terminal of the temperature sensor. The output terminal of the first amplifier, the other end of the first capacitor, and the other end of the first resistor are connected to one end of the second resistor. The other end of the second resistor and one end of the second capacitor are connected to one end of the third resistor. The other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are connected to the input terminal of the analog-to-digital converter chip. The non-inverting input terminal of the first amplifier, the other end of the second capacitor, the other end of the fourth resistor, and the other end of the third capacitor are grounded. The output terminal of the analog-to-digital converter chip is connected to the main control circuit.

[0036] This utility model also proposes a power supply device, including the power supply hot backup control component as described above.

[0037] This utility model employs a power supply hot backup control component, including an AC input terminal, a communication circuit, multiple power supply modules, a detection and control circuit, and a main control circuit. The detection and control circuit communicates with each of the multiple power supply modules one-to-one through the communication circuit, allowing it to monitor the real-time operating status of each power supply module, including its on / off status, alarm status, and real-time output parameters such as voltage, current, and power. This enables the detection and control circuit to detect any abnormalities in the power supply modules, such as overcurrent, overvoltage, or module failure, immediately. Upon detecting a fault, the detection and control circuit immediately sends a signal to shut down the faulty power supply module, only restarting it after detecting that the abnormality has been resolved. Simultaneously, the detection and control circuit sends the operating status information of multiple power supply modules to the main control circuit, which updates the number of normally operating power supply modules based on the received information. Then, based on the preset power requirements and the current number of normally operating power supply modules, the output power of each power supply module is recalculated to ensure that the load receives the required stable power supply. Thus, this invention enables independent power-on / power-off control of the power modules, with a fast response speed. It ensures that a power module is quickly shut down when a fault occurs and quickly turned on when the fault is resolved, guaranteeing rapid activation of the power modules. Simultaneously, the main control circuit can determine the number of normally functioning power modules based on multiple operating status information and redistribute the power output of each power module to efficiently meet the load's power demands. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 A schematic diagram of a structure of an embodiment of the power hot backup control component provided by this utility model;

[0040] Figure 2 A schematic diagram of another embodiment of the power hot backup control component provided by this utility model;

[0041] Figure 3 A schematic diagram of another embodiment of the power hot backup control component provided by this utility model;

[0042] Figure 4 A schematic diagram of another embodiment of the power hot backup control component provided by this utility model;

[0043] Figure 5 An electronic circuit diagram of a fan drive circuit according to an embodiment of the power supply hot backup control component provided by this utility model.

[0044] Explanation of icon numbers:

[0045]

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0050] In existing DC power supply systems, multiple power modules are typically connected in parallel to ensure that if one or more power modules fail, the remaining modules can continue to supply power to the load. However, this simple parallel connection method can easily lead to uneven power distribution among the power modules and a slow response time to power failures.

[0051] This utility model proposes a power supply hot backup control component.

[0052] Please see Figure 1In one embodiment of the present invention, the power hot backup control component includes an AC input terminal, a communication circuit 40, multiple power modules 10, a detection control circuit 20, and a main control circuit 30.

[0053] The power input terminals of the multiple power modules 10 are connected to the AC input terminals, and the power output terminals of the multiple power modules 10 are used for load connection; the multiple power modules 10 are used to convert AC power into DC power output; wherein, the multiple power modules 10 include at least one main power module 10 and at least one auxiliary power module 10.

[0054] The detection control circuit 20 is connected to multiple power modules 10 one by one through the communication circuit 40; the detection control circuit 20 is used to acquire multiple operating status information of multiple power modules 10, and control the power-on / power-off of the corresponding power modules 10 according to the operating status information.

[0055] The main control circuit 30 is connected to multiple power modules 10 one by one through the communication circuit 40. The main control circuit 30 is also connected to the detection and control circuit 20. The main control circuit 30 is used to control the output power of multiple power modules 10 according to multiple operating status information and preset power requirements.

[0056] In this embodiment, each power module 10 has independent voltage, current, and power output capabilities, and its output is unaffected by the DC power output of other power modules 10 after being individually powered off, ensuring the independence and non-interference of each power module 10. In this embodiment, the multiple power modules 10 include at least one main power module 10 and at least one auxiliary power module 10, wherein the auxiliary power module 10 is used to implement a redundancy design to ensure that normal power output can still be maintained when the main power module 10 fails. During normal operation, all power modules 10 are in the powered-on state and can be quickly activated when power is needed to ensure uninterrupted power supply.

[0057] In this embodiment, the detection control circuit 20 communicates with multiple power modules 10 one-to-one via the communication circuit 40. This allows the detection control circuit 20 to monitor the operating status of each power module 10 in real time, including its power-on / off status, alarm status, and real-time output parameters such as voltage, current, and power. Thus, the detection control circuit 20 can detect any abnormalities in the power modules 10, such as overcurrent, overvoltage, or module failure, in the first instance. Once a fault is detected, the detection control circuit 20 immediately sends a signal to shut down the faulty power module 10, and only turns it back on after detecting that the shut-down power module 10 has resolved its abnormality. Simultaneously, the detection control circuit 20 can notify the main control circuit 30, which updates the number of normally functioning power modules 10 based on the received information. Then, based on the preset power requirements and the current number of normally functioning power modules 10, the output power of each power module 10 is recalculated to ensure that the load receives the required stable power supply. Thus, this embodiment enables independent power-on / power-off control of the power module 10, with a fast response speed. It ensures that the power module 10 is quickly shut down when a fault occurs and quickly turned on when the fault is resolved, guaranteeing rapid activation of the power module 10. Simultaneously, the main control circuit 30 obtains the number of normally functioning power modules 10 through the detection control circuit 20 and redistributes the power output of each power module 10 to efficiently meet the power demands of the load.

[0058] It should be noted that the detection control circuit 20 can count the number of normally operating power modules 10 based on multiple operating status information and send the count to the main control circuit 30. Alternatively, it can directly send multiple operating status information to the main control circuit 30, which will then count the number of normally operating power modules 10. No limitation is imposed here. In this embodiment, the counting of normally operating power modules 10 by the detection control circuit 20 will be used for explanation.

[0059] In one feasible implementation, please refer to Figure 2 Multiple power supply modules 10, detection and control circuits 20, and main control circuits 30 are all equipped with CAN interfaces and communicate via a CAN bus to achieve data exchange and collaborative operation between the components. Specifically, the first to Nth power supply modules are main power supply modules, and the (N+1)th power supply module is an auxiliary power supply module, where N is a positive integer greater than 1. The specific operating steps of the power supply hot backup control component may include:

[0060] In step S1, the main control circuit 30 sends a broadcast power-on command to control all power modules 10 to power on, ensuring the initial start-up of power supply.

[0061] In step S2, the main control circuit 30 acquires the current preset power demand at a period of 10 milliseconds and calculates the power that each power module 10 should output. The output power of each power module 10 is broadcast via the CAN bus to ensure that the output power of each power module 10 matches the power required by the load. Specifically, the output power of a single power module 10 is equal to the preset power demand divided by the number of power modules 10, thereby achieving balanced power distribution.

[0062] In step S3, the detection control circuit 20 reads the operating status of each power module 10 point-to-point via the CAN bus at a period of 5 milliseconds and determines whether it is in a fault state. If the fault of a power module 10 lasts for more than a first preset time, the detection control circuit 20 sends a shield broadcast command via the CAN bus to prevent it from receiving subsequent power-on or power-off broadcast commands, and controls the power module 10 to power off, marking it as a faulty power module 10. If the power module 10 recovers to normal and the recovery time exceeds a second preset time, the detection control circuit 20 controls the power module 10 to power on via the CAN bus and sends a power-on broadcast command to make it re-receive subsequent broadcast commands, marking it as a normally functioning power module 10. At the same time, the detection control circuit 20 counts and sends the number of normally functioning power modules 10 to the main control circuit 30.

[0063] In step S4, the main control circuit 30 recalculates the output power of each power module 10 based on the number of normally operating power modules 10 and the preset power requirements, and broadcasts the updated output power of each power module 10 via the CAN bus, thereby ensuring that the power distribution of the power modules 10 always matches the load requirements.

[0064] Thus, this embodiment ensures that the output of each power module 10 always matches the load demand by periodically calculating and adjusting the output power of each power module 10, thereby avoiding power waste or insufficiency. The detection control circuit 20 can periodically detect the operating status of the power modules 10, promptly identify and isolate faulty power modules 10, and improve the reliability of the power hot backup control component. After the faulty power module 10 recovers, it can be quickly reactivated, ensuring the maximization of available power modules 10 and improving the fault tolerance of the power hot backup control component.

[0065] In this invention, the detection and control circuit 20 is connected to multiple power modules 10 one-to-one via the communication circuit 40. This allows the detection and control circuit 20 to monitor the operating status of each power module 10 in real time, including its power-on / off status, alarm status, and real-time output parameters such as voltage, current, and power. Thus, the detection and control circuit 20 can detect any abnormalities in the power modules 10, such as overcurrent, overvoltage, or module failure, in the first instance. Once a fault is detected, the detection and control circuit 20 immediately sends a signal to shut down the faulty power module 10, stopping it from receiving power output control signals. The faulty power module 10 remains off until its abnormal state is resolved, at which point it is turned back on. Simultaneously, the detection and control circuit 20 can notify the main control circuit 30, which updates the number of normally functioning power modules 10 based on the received information. Then, based on the preset power requirements and the current number of normally functioning power modules 10, the output power of each power module 10 is recalculated to ensure the load receives the required stable power supply. Thus, this invention enables independent power-on / power-off control of the power module 10, with a fast response speed. It ensures that the power module 10 is quickly shut down when a fault occurs and quickly turned on when the fault is resolved, guaranteeing rapid activation of the power module 10. Simultaneously, the main control circuit 30 obtains the number of normally functioning power modules 10 through the detection control circuit 20 and redistributes the power output of each power module 10 to efficiently meet the power demands of the load.

[0066] Please see Figure 3 In one embodiment of this utility model, the power module 10 includes:

[0067] Power input interface 11, one end of which is connected to the AC input terminal;

[0068] Power output interface 12, one end of which is used for load connection;

[0069] Signal interaction interface 13, one end of which is connected to communication circuit 40;

[0070] Switching circuit 14, one end of which is connected to the other end of power input interface 11; switching circuit 14 is used to control the connection / deactivation of AC power.

[0071] The voltage conversion circuit 15 has its input terminal connected to the other end of the switching circuit 14, and its output terminal connected to the other end of the power output interface 12. The voltage conversion circuit 15 is used to convert AC power into DC power output.

[0072] The power control circuit 16 is connected to the controlled terminal of the switching circuit 14, the controlled terminal of the voltage conversion circuit 15, and the other end of the signal interaction interface 13. The power control circuit 16 is used to control the operation of the switching circuit 14 and the voltage conversion circuit 15.

[0073] Power module 10 also includes:

[0074] The voltage detection circuit 17 is connected to the output terminal of the voltage conversion circuit 15. The voltage detection circuit 17 is used to detect the output voltage value of the voltage conversion circuit 15 and output a corresponding voltage detection signal.

[0075] The current detection circuit 18 is connected in series between the output terminal of the voltage conversion circuit 15 and the other end of the power output interface 12. The current detection circuit 18 is used to detect the output current value of the voltage conversion circuit 15 and output the corresponding current detection signal.

[0076] The power control circuit 16 is also used to control the operation of the switching circuit 14 and the voltage conversion circuit 15 according to the voltage detection signal and the current detection signal, and to output the operating status information based on the voltage detection signal and the current detection signal.

[0077] In this embodiment, when the power module 10 is powered on, AC power is input from the switching circuit 14 to the voltage conversion circuit 15. The voltage conversion circuit 15 converts the AC power into DC power output. The power control circuit 16 controls the operation of the voltage conversion circuit 15 based on the output power of the individual power module 10 sent by the main control circuit 30, ensuring that the actual DC power output of the voltage conversion circuit 15 meets the output power requirements of the individual power module 10. The voltage detection circuit 17 detects the output voltage value of the voltage conversion circuit 15, which can be sampled and detected using a sampling resistor. The current detection circuit 18 detects the output current value of the voltage conversion circuit 15, which can be sampled and detected using a shunt. The power control circuit 16 controls the operation of the switching circuit 14 and the voltage conversion circuit 15 based on the voltage and current detection signals, and outputs operating status information based on these signals. For example, based on the voltage and current detection signals, if the power control circuit 16 determines that the output power value is greater than the required power value but within the safe range threshold, then the power control circuit 16 can adjust the operating state of the voltage conversion circuit 15, such as adjusting the conduction frequency of the switching transistor within the voltage conversion circuit 15, to reduce its output power and achieve negative feedback regulation of power. If the output voltage or output current value is detected to be too high, the switching circuit 14 can be disconnected to protect the circuit safety, and at the same time, a fault information is sent to the detection control circuit 20. The detection control circuit 20 can receive the fault information and send a broadcast blocking command and a shutdown command to the power control circuit 16 to control the power module 10 to shut down. In this way, this embodiment can ensure the stable and safe operation of the power module 10.

[0078] In one embodiment of this utility model, the AC power supply is a three-phase AC power supply; the voltage conversion circuit 15 includes:

[0079] The three-phase rectifier has its input terminal connected to the other end of the switching circuit 14 and its controlled terminal connected to the power control circuit 16. The three-phase rectifier is used to convert three-phase AC power into DC power output.

[0080] The transformer has its input end connected to the output end of the three-phase rectifier, its output end connected to the other end of the power output interface 12, and its controlled end connected to the power control circuit 16. The transformer is used to transform the power output from the three-phase rectifier before outputting it.

[0081] The switching circuit 14 includes a circuit breaker, one end of which is connected to the other end of the power input interface 11, the other end of which is connected to the input terminal of the voltage conversion circuit 15, and the controlled terminal of the circuit breaker is connected to the power control circuit 16.

[0082] In this embodiment, the three-phase rectifier can effectively utilize the energy of a three-phase AC power supply. Compared to single-phase rectification, three-phase rectification can provide a more stable DC output, reduce harmonic distortion, and improve energy utilization. The transformer can further adjust the voltage level after three-phase rectification and provide electrical isolation, ensuring that the final output DC voltage meets the load requirements. The circuit breaker is specifically a three-phase circuit breaker, suitable for high-voltage power supply scenarios. Thus, this embodiment improves the efficiency and stability of the power module 10.

[0083] In one embodiment of the present invention, the power module 10 further includes an overcurrent protection circuit 19. The overcurrent protection circuit 19 is connected in series between the other end of the power input interface 11 and one end of the switching circuit 14. The overcurrent protection circuit 19 is used to disconnect the connection between the AC input terminal and the switching circuit 14 when the current value of the AC power supply is greater than the preset current value.

[0084] In this embodiment, the overcurrent protection circuit 19 may specifically include protective devices such as fuses, which can effectively prevent damage to the circuit caused by short circuits and other reasons, thereby improving the safety of the circuit.

[0085] Please see Figure 4 In one embodiment of this utility model, the power hot backup control component further includes:

[0086] Fan;

[0087] Temperature detection circuit 51, the signal output terminal of temperature detection circuit 51 is connected to main control circuit 30, temperature detection circuit 51 is used to detect the ambient temperature of multiple power modules 10 and output corresponding temperature detection signals.

[0088] The fan drive circuit 52 has its power supply terminal connected to the AC input terminal, its drive output terminal connected to the fan FAN, and its controlled terminal connected to the main control circuit 30.

[0089] The main control circuit 30 is also used to control the operation of the fan drive circuit 52 based on the temperature detection signal.

[0090] In this embodiment, the fan facilitates heat dissipation for the multiple power modules 10, allowing the power modules 10 to operate at a suitable ambient temperature, thus reducing the risk of performance degradation or hardware damage caused by overheating of the power modules 10.

[0091] In one feasible implementation, please refer to Figure 5The fan drive circuit 52 includes a fifth resistor R5, a sixth resistor R6, a first NMOS transistor Q1, a first diode D1, and a fourth capacitor C4. The main control circuit 30 can output PWM signals with different duty cycles to control the fan rotation. For example, when the ambient temperature is high, it outputs a PWM signal with a larger duty cycle to increase the fan speed; when the ambient temperature is low, it outputs a PWM signal with a smaller duty cycle to decrease the fan speed or outputs a low level to stop the fan. The first diode D1 prevents the circuit from being damaged by reverse voltage, and the first capacitor C1 is used for power supply filtering. Thus, this embodiment can accelerate the heat dissipation of the power module 10, reduce the possibility of power module 10 failure, and improve the reliability of the circuit.

[0092] Please see Figure 4 In one embodiment of this utility model, the temperature detection circuit 51 includes:

[0093] A temperature sensor is used to collect the ambient temperature of multiple power modules 10 and output the corresponding temperature detection signal.

[0094] The signal modulation circuit is connected to the temperature sensor and is used to amplify and filter the temperature detection signal before outputting it.

[0095] The analog-to-digital converter (ADC) is connected to the signal modulation circuit. The ADC is used to convert the temperature detection signal into a digital signal and then output it.

[0096] The signal modulation circuit includes a first amplifier OP1, a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2, and the analog-to-digital conversion circuit includes a third resistor R3, a fourth resistor R4, a third capacitor C3 and an analog-to-digital conversion chip U1.

[0097] The inverting input of the first amplifier OP1, one end of the first capacitor C1, and one end of the first resistor R1 are connected to the signal output of the temperature sensor. The output of the first amplifier OP1, the other end of the first capacitor C1, and the other end of the first resistor R1 are connected to one end of the second resistor R2. The other end of the second resistor R2 and one end of the second capacitor C2 are connected to one end of the third resistor R3. The other end of the third resistor R3, one end of the fourth resistor R4, and one end of the third capacitor C3 are connected to the input of the analog-to-digital converter chip U1. The non-inverting input of the first amplifier OP1, the other end of the second capacitor C2, the other end of the fourth resistor R4, and the other end of the third capacitor C3 are grounded. The output of the analog-to-digital converter chip U1 is connected to the main control circuit 30.

[0098] In this embodiment, the first amplifier OP1 amplifies the temperature detection signal, and the first capacitor C1 and the first resistor R1 adjust the amplifier's gain. The second resistor R2 and the second capacitor C2 form a low-pass filter, which filters out high-frequency components to reduce high-frequency noise or interference in the temperature detection signal, thus improving the anti-interference capability of the signal modulation circuit. The third resistor R3, the fourth resistor R4, and the third capacitor C3 form a sample-and-hold circuit, which converts the temperature detection signal into a form that the analog-to-digital converter chip U1 can process. The resistance values ​​of the third resistor R3 and the fourth resistor R4 can be adjusted according to the acquisition range of the analog-to-digital converter chip U1. The voltage across the fourth resistor R4 changes according to the voltage change of the temperature detection signal, and the third capacitor C3 acts as a filter. The analog-to-digital converter chip U1 converts the input analog signal into a digital signal output. Thus, this embodiment can acquire a relatively accurate ambient temperature.

[0099] This utility model also proposes a power supply device, which includes a power supply hot backup control component. The specific structure of the power supply hot backup control component is as described in the above embodiments. Since this power supply device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0100] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A power supply hot backup control component, characterized in that, Includes AC input terminal, communication circuit, multiple power supply modules, detection and control circuit and main control circuit; The power input terminals of the multiple power modules are connected to the AC input terminal, and the power output terminals of the multiple power modules are used to connect to the load. The plurality of power modules are used to convert AC power into DC power output; wherein the plurality of power modules include at least one main power module and at least one auxiliary power module; The detection and control circuit is connected to the multiple power modules one by one through the communication circuit; the detection and control circuit is used to acquire multiple operating status information of the multiple power modules, and control the power module to turn on / off according to the operating status information. The main control circuit is connected to each of the power modules one by one through the communication circuit, and the main control circuit is also connected to the detection and control circuit; the main control circuit is used to control the output power of the power modules according to the multiple operating status information and preset power requirements.

2. The power supply hot backup control component as described in claim 1, characterized in that, The power module includes: A power input interface, one end of which is connected to the AC input terminal; A power output interface, one end of which is used for connecting the load; A signal interaction interface, one end of which is connected to the communication circuit; A switching circuit, one end of which is connected to the other end of the power input interface; the switching circuit is used to control the connection / deactivation of the AC power supply. A voltage conversion circuit, wherein the input terminal of the voltage conversion circuit is connected to the other end of the switching circuit, and the output terminal of the voltage conversion circuit is connected to the other end of the power output interface, the voltage conversion circuit being used to convert the AC power supply into DC power output; A power control circuit is provided, which is connected to the controlled terminal of the switching circuit, the controlled terminal of the voltage conversion circuit, and the other end of the signal interaction interface; the power control circuit is used to control the operation of the switching circuit and the voltage conversion circuit.

3. The power supply hot backup control component as described in claim 2, characterized in that, The power module also includes: A voltage detection circuit is provided, wherein the detection terminal of the voltage detection circuit is connected to the output terminal of the voltage conversion circuit, and the voltage detection circuit is used to detect the output voltage value of the voltage conversion circuit and output a corresponding voltage detection signal. A current detection circuit is connected in series between the output terminal of the voltage conversion circuit and the other end of the power output interface. The current detection circuit is used to detect the output current value of the voltage conversion circuit and output a corresponding current detection signal. The power control circuit is also used to control the operation of the switching circuit and the voltage conversion circuit according to the voltage detection signal and the current detection signal, and to output the operating status information based on the voltage detection signal and the current detection signal.

4. The power supply hot backup control component as described in claim 2, characterized in that, The AC power supply is a three-phase AC power supply; the voltage conversion circuit includes: A three-phase rectifier, wherein the input terminal of the three-phase rectifier is connected to the other end of the switching circuit, and the controlled terminal of the three-phase rectifier is connected to the power control circuit, and the three-phase rectifier is used to convert the three-phase AC power supply into DC power output; A transformer, the input end of which is connected to the output end of the three-phase rectifier, the output end of which is connected to the other end of the power output interface, and the controlled end of which is connected to the power control circuit, the transformer being used to transform the power output from the three-phase rectifier before outputting it.

5. The power supply hot backup control component as described in claim 2, characterized in that, The switching circuit includes a circuit breaker, one end of which is connected to the other end of the power input interface, the other end of which is connected to the input terminal of the voltage conversion circuit, and the controlled terminal of the circuit breaker is connected to the power control circuit.

6. The power supply hot backup control component as described in claim 2, characterized in that, The power module also includes an overcurrent protection circuit, which is connected in series between the other end of the power input interface and one end of the switching circuit. The overcurrent protection circuit is used to disconnect the connection between the AC input terminal and the switching circuit when the current value of the input AC power is greater than a preset current value.

7. The power supply hot backup control component as described in claim 1, characterized in that, Also includes: fan; A temperature detection circuit is provided, the signal output terminal of which is connected to the main control circuit. The temperature detection circuit is used to detect the ambient temperature of multiple power modules and output corresponding temperature detection signals. A fan drive circuit, wherein the power supply terminal of the fan drive circuit is connected to the AC input terminal, the drive output terminal of the fan drive circuit is connected to the fan, and the controlled terminal of the fan drive circuit is connected to the main control circuit; The main control circuit is also used to control the operation of the fan drive circuit based on the temperature detection signal.

8. The power hot backup control component as described in claim 7, characterized in that, The temperature detection circuit includes: A temperature sensor is used to collect the ambient temperature of multiple power modules and output a corresponding temperature detection signal. A signal modulation circuit is connected to the temperature sensor, and the signal modulation circuit is used to amplify and filter the temperature detection signal before outputting it. An analog-to-digital converter circuit is provided, which is connected to the signal modulation circuit. The analog-to-digital converter circuit is used to convert the temperature detection signal into a digital signal and then output it.

9. The power supply hot backup control component as described in claim 8, characterized in that, The signal modulation circuit includes a first amplifier, a first resistor, a first capacitor, a second resistor, and a second capacitor; the analog-to-digital conversion circuit includes a third resistor, a fourth resistor, a third capacitor, and an analog-to-digital conversion chip. In this configuration, the inverting input terminal of the first amplifier, one end of the first capacitor, and one end of the first resistor are connected to the signal output terminal of the temperature sensor. The output terminal of the first amplifier, the other end of the first capacitor, and the other end of the first resistor are connected to one end of the second resistor. The other end of the second resistor and one end of the second capacitor are connected to one end of the third resistor. The other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are connected to the input terminal of the analog-to-digital converter chip. The non-inverting input terminal of the first amplifier, the other end of the second capacitor, the other end of the fourth resistor, and the other end of the third capacitor are grounded. The output terminal of the analog-to-digital converter chip is connected to the main control circuit.

10. A power supply device, characterized in that, Includes the power hot backup control component as described in any one of claims 1 to 9.

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