Reinforced power box capable of supplying power uninterruptedly
By combining UPS power modules, servo power modules, inertial power modules, and programmable power modules, the problem of uninterrupted power supply in the event of a fault in traditional power boxes is solved, achieving the stability and reliability of the power box and ensuring continuous power output and normal operation of the load equipment.
Patent Information
- Application Number
- CN202411520561.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-02-11
AI Technical Summary
Traditional power supply boxes cannot handle input power failures in a timely manner, resulting in uninterrupted power supply, unstable output power, inability to effectively isolate different functional units, and inability to handle power output fluctuations caused by interference.
The system employs a combined design of UPS power modules, servo power modules, inertial power modules, and programmable power modules, integrating filtering and redundant circuits to ensure power stability and reliability. The servo power modules reduce power ripple, the inertial power modules provide stable power output, and the programmable power modules acquire voltage parameters and provide controlled power.
It achieves stability and reliability of the power supply box, ensuring a continuous and stable power output when the external power is disconnected, preventing current backflow, protecting the load equipment, and improving system reliability.
Smart Images
Figure CN119420147A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of customized reinforced power supplies, and in particular to a reinforced power supply box for uninterrupted power supply. Background Art
[0002] With the rapid development of science and technology and the growing demand for energy, the stability and reliability of power systems have become the focus of attention in various industries. Especially in areas such as data centers and communication base stations that have extremely high requirements for power supply, the importance of uninterruptible power supply systems (UPS) is self-evident. Traditional air-cooled power boxes have the disadvantages of low heat dissipation efficiency, uneven temperature distribution, high energy consumption, and high noise. Liquid cooling technology, as an advanced heat dissipation method, has higher heat dissipation efficiency and lower noise levels. At the same time, it can more effectively reduce the operating temperature of the equipment and improve the stability and service life of the equipment.
[0003] At present, if the input power of the power box fails, it cannot be processed in time, uninterrupted power supply cannot be achieved, efficient power supply of the power box cannot be achieved, the stability and reliability of the output power of the power box cannot be ensured, the different functional units inside the power box cannot be effectively isolated, and the problem of power output fluctuation caused by interference cannot be handled. Summary of the invention
[0004] In order to solve the above technical problems, a reinforced power supply box with uninterrupted power supply is provided. The technical solution solves the problems raised in the above background technology that if the input power supply fails, it cannot be processed in time, uninterrupted power supply cannot be achieved, efficient power supply of the power box cannot be achieved, the stability and reliability of the power supply output of the power box cannot be ensured, the different functional units inside the power box cannot be effectively isolated, and the power output fluctuations caused by interference cannot be handled.
[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A reinforced power supply box for uninterruptible power supply, comprising a UPS power supply module, a servo power supply module, an inertial power supply module and a program-controlled power supply module; The input end of the servo power module is electrically connected to the output end of the UPS power module to provide DC60V power output. The servo power module includes a servo power module 1 and a servo power module 2. The servo power module 1 and the servo power module 2 are two identical power modules. The servo power module is integrated with an input filter circuit and an output filter circuit to reduce power ripple, enhance the protection against power switch noise and electromagnetic interference, and optimize the power output performance quality. The input end of the inertial power module is electrically connected to the output end of the UPS power module. The inertial power module integrates two sets of DC-DC circuits to provide stable DC24V power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the system. The input end of the programmable power module is electrically connected to the output end of the UPS power module, and is electrically connected to the servo power module and the inertial power module, so as to provide two controlled DC24V outputs and collect voltage parameter information of the servo power module and the inertial power module.
[0006] Preferably, the UPS power module is electrically connected to an external AC220V input power source after filtering, and the UPS power module includes a UPS power control unit and a UPS power battery unit. The UPS power control unit is used to convert external AC power into DC as the DC input of the servo power module, the inertial power module and the programmable power module. When the external power is disconnected, the UPS power module automatically switches to battery mode, and the UPS power battery unit supplies power to the servo power, the inertial power and the programmable power. In the battery power supply mode, the buzzer of the UPS power module alarms. The UPS power battery unit can provide uninterrupted power supply for not less than 30 minutes when fully charged, and the power supply power is not less than 400W. After the external power is restored, the buzzer stops alarming and automatically switches to the external power mode, and the UPS power control unit charges the battery.
[0007] Preferably, the UPS power module includes a UPS power control unit and a UPS power battery unit, the UPS power control unit is integrated with an input protection circuit, an input lightning protection and transient voltage suppression circuit, an input filter circuit, an AC-DC power subunit, a surge suppression circuit, a DC-DC subunit and a DC output filter circuit, the UPS power battery unit includes a charging subunit, a battery subunit and a discharge subunit, the input end of the AC-DC power subunit is provided with a fuse, the surge suppression circuit is integrated with a varistor, and the varistor is used to clamp the voltage at a relatively fixed voltage value.
[0008] Preferably, the output end of the input lightning protection and transient voltage suppression circuit is electrically connected to the input end of the input filter circuit, the input end of the input filter circuit is electrically connected to the input end of the surge suppression circuit, the output end of the surge suppression circuit is electrically connected to the input end of the AC-DC power supply subunit, the output end of the DC-DC subunit is electrically connected to the input end of the DC output filter circuit and the input end of the charging subunit, the output end of the discharge subunit is electrically connected to the DC output filter circuit, and the output end of the DC output filter circuit is used to output DC28V power.
[0009] Preferably, the servo power supply module includes an input filter circuit, a first DC-DC unit, an output filter circuit and an external interface circuit. The filter circuit integrates a common-mode inductor, a common-mode capacitor and a Y capacitor to reduce power ripple and enhance the protection against power switch noise and electromagnetic interference. The rated voltage of the diode is 200V and the rated current is 20A. The diode is used to prevent current backflow when the power is turned off. The output end of the input filter circuit is electrically connected to the input end of the first DC-DC unit, and the output end of the first DC-DC unit is electrically connected to the input end of the output filter circuit.
[0010] Preferably, the inertial power supply module includes a second input filter circuit, a second DC-DC unit and a second output filter, the second DC-DC unit integrates two groups of identical DC-DC circuits, each group of DC-DC circuits can bear the maximum load of the power supply, the output ends of the two groups of DC-DC circuits are output in parallel through diodes for load power supply, and when one group of power supplies fails, the other group of power supplies can continue to provide stable power output.
[0011] Preferably, the programmable power supply module includes a programmable control unit and a power supply unit, the power supply unit is integrated with a third input filter circuit, a third DC-DC unit and a third output filter circuit, the programmable control unit is integrated with an isolated voltage acquisition circuit, and the isolated voltage acquisition circuit is used to collect voltage parameters of the servo power supply module, the inertial power supply module and the programmable power supply module.
[0012] Preferably, the data output end of the programmable control unit communicates and interacts with the isolated RS422 circuit, and the isolated voltage acquisition circuit integrates a high-reliability isolated voltage sampling amplifier and a digital isolator. The single-ended input signal range of the voltage sampling amplifier is 0.1V to 2V, and the fixed gain is 1.
[0013] Preferably, the main function of the power supply unit of the programmable power supply module is to provide two DC24V direct current outputs, the power supply unit includes a fourth input filter circuit, a third DC-DC sub-unit and an output filter circuit, the programmable power supply module is controlled to output, and the programmable power supply module is electrically connected to the optocoupler.
[0014] Preferably, the power supply unit of the programmable power supply module includes an auxiliary power supply sub-unit, which integrates a U20 chip and a U21 chip. The first and second pins of the U20 chip are connected in parallel with capacitors C84 and C85. The first and second pins of the U20 chip are electrically connected to an inductor L2 and are electrically connected to a 27V voltage input. The input voltage of the auxiliary power supply sub-unit is 9-40V, the output voltage is 5V, and the maximum output power is 6W.
[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a reinforced power supply box with uninterruptible power supply, which reduces power ripple through the filtering circuit of the servo power module, enhances the protection capability against power switch noise and electromagnetic interference, optimizes the power output performance quality, prevents current backflow when the power is turned off through a series diode, and utilizes the reverse cutoff characteristic of the diode to have an anti-reverse connection effect, thereby protecting the load equipment and ensuring the stability of the power supply box. Through circuit redundancy design, it is ensured that when a group of power supplies fails, the other group of power supplies can continue to provide stable power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the power supply box. Through the uninterruptible power supply design, it can provide continuous and stable power output when the external power is disconnected, thereby ensuring the power supply reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural block diagram of a reinforced power supply box for uninterrupted power supply proposed by the present invention; Figure 2 This is a structural block diagram of a UPS power module in the present invention; Figure 3 It is a structural block diagram of the servo power supply module in the present invention; Figure 4 This is a circuit diagram of a servo power module in the present invention; Figure 5 This is a structural block diagram of the inertial power supply module in the present invention; Figure 6 This is a circuit diagram of the inertial power module in the present invention; Figure 7 This is a structural block diagram of the program-controlled power supply module in the present invention; Figure 8 and Fig. 9 Combined into a circuit diagram of a power supply unit in a program-controlled power supply module of the present invention; Fig.10 This is a circuit diagram of the single-chip microcomputer MCU of the program-controlled unit in the program-controlled power module of the present invention. DETAILED DESCRIPTION
[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0018] Reference Figure 1 As shown, a reinforced power supply box for uninterruptible power supply in an embodiment of the present invention includes a UPS power supply module, a servo power supply module, an inertial power supply module and a programmable power supply module; The UPS power module is electrically connected to an external AC220V input power source after filtering by a filter. The UPS power module includes a UPS power control unit and a UPS power battery unit. The UPS power control unit is used to convert the external AC power into DC as the DC input of the servo power module, the inertial power module and the programmable power module. Among them, when the external power is disconnected, the UPS power module automatically switches to battery mode, and the UPS power battery unit supplies power to the servo power supply, inertial power supply and program-controlled power supply. In the battery power supply mode, the buzzer of the UPS power module alarms. The UPS power battery unit can provide uninterrupted power supply for not less than 30 minutes when fully charged, and the power supply power is not less than 400W. After the external power is restored, the buzzer stops alarming and automatically switches to the external power mode, and the UPS power control unit charges the battery; The input end of the servo power module is electrically connected to the output end of the UPS power module to provide DC60V power output. The servo power module is integrated with an input filter circuit and an output filter circuit to reduce power ripple, enhance the protection against power switch noise and electromagnetic interference, and optimize the power output performance quality; The input end of the inertial power module is electrically connected to the output end of the UPS power module. The inertial power module integrates two sets of DC-DC circuits to provide stable DC24V power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the system. The input end of the programmable power module is electrically connected to the output end of the UPS power module, and is electrically connected to the servo power module and the inertial power module, so as to provide two controlled DC24V outputs and collect voltage parameter information of the servo power module and the inertial power module.
[0019] Reference Figure 2 As shown, the UPS power module includes a UPS power control unit and a UPS power battery unit. The UPS power control unit integrates an input protection circuit, an input lightning protection and transient voltage suppression circuit, an input filter circuit, an AC-DC power subunit, a surge suppression circuit, a DC-DC subunit and a DC output filter circuit. The UPS power battery unit includes a charging subunit, a battery subunit and a discharge subunit. The input end of the AC-DC power subunit is provided with a fuse. The surge suppression circuit integrates a varistor, and the varistor is used to clamp the voltage at a relatively fixed voltage value.
[0020] The output end of the input lightning protection and transient voltage suppression circuit is electrically connected to the input end of the input filter circuit, the input end of the input filter circuit is electrically connected to the input end of the surge suppression circuit, the output end of the surge suppression circuit is electrically connected to the input end of the AC-DC power supply subunit, the output end of the DC-DC subunit is electrically connected to the input end of the DC output filter circuit and the input end of the charging subunit, the output end of the discharge subunit is electrically connected to the DC output filter circuit, and the output end of the DC output filter circuit is used to output DC28V power.
[0021] When an abnormality occurs in the UPS power module, in order to protect the core components from damage, a fuse protection is set at the input end of the AC / DC power subunit, and a varistor is designed in the surge suppression circuit. The varistor is a voltage-limiting protection device. By utilizing the nonlinear characteristics of the varistor, when an overvoltage appears between the two stages of the varistor, the varistor can clamp the voltage at a relatively fixed voltage value, thereby protecting the subsequent circuit. A bidirectional TVS tube is designed at the AC input end to suppress the spike interference of the AC power grid.
[0022] The charging subunit is based on the DC-DC constant voltage and constant current control chip H6218L produced by Dongguan Huihai Semiconductor Co., Ltd. The maximum output voltage is DC28V and the maximum output current is 3A. H6218L integrates soft start, overcurrent protection, overtemperature protection and output short circuit protection functions to improve the reliability of the system. According to the system requirements, the battery power supply time is greater than 0.5 hours when the rated load of the whole machine is 27V / 400W, that is, the minimum battery capacity is (400*0.5) / 27=7.41Ah. Since the maximum voltage of the charging power supply is 28V, according to the characteristics of the battery charge and discharge curve, the battery is in a floating charge state after charging to 90%. In order to ensure the battery life and reliability, a 12Ah lithium iron phosphate battery pack is selected. When charged with a current of 3A, the shortest charging time is 4 hours. The battery module is designed with functions such as overcharge protection, over-discharge protection, overcurrent protection, temperature protection, and battery balancing to protect the battery from damage under extreme working conditions and extend the battery life.
[0023] The design of the auxiliary control circuit draws on mature UPS design experience, including the power on / off control circuit, indicator light circuit, power indication circuit and buzzer alarm circuit to achieve interactive control with human-machine activities.
[0024] like Figure 3 - Figure 4As shown, the servo power supply module includes an input filter circuit, a first DC-DC unit, an output filter circuit and an external interface circuit, wherein the 60V output is formed by two 30V output circuits of the same model connected in series to meet the requirements of the electric energy index. The servo power supply module is a DC input. Considering the power supply EMI and EMC, it is necessary to design a filter and protection circuit. The output filter circuit is mainly composed of a common mode inductor, a common 0 mode capacitor, and a Y capacitor, which are used to reduce the power supply ripple, enhance the protection against power switch noise and electromagnetic interference, and optimize the power supply output performance quality; The output end of the input filter circuit is electrically connected to the input end of the first DC-DC unit, and the output end of the first DC-DC unit is electrically connected to the input end of the output filter circuit.
[0025] A diode is connected in series at the output end of the servo power module. The rated voltage of the diode is 200V and the rated current is 20A. The diode is used to prevent current backflow when the power is turned off. In this embodiment, the diode is a high-current Schottky diode MBR20200CD produced by Yangjie Electronics. The series diode design can prevent current backflow when the power is turned off. At the same time, the reverse cutoff characteristic of the diode is utilized to prevent reverse connection and protect the load equipment.
[0026] Reference Figure 5 - Figure 6 As shown, the inertial power supply module includes a second input filter circuit, a second DC-DC unit and a second output filter. The second DC-DC unit integrates two groups of identical DC-DC circuits. Each group of DC-DC circuits can bear the maximum load of the power supply. The output ends of the two groups of DC-DC circuits are output in parallel through diodes for load power supply. When one group of power supplies fails, the other group of power supplies can continue to provide stable power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the system.
[0027] Reference Figure 7 - Fig. 9 As shown, the program-controlled power supply module includes a program-controlled unit and a power supply unit, the power supply unit is integrated with a third input filter circuit, a third DC-DC unit and a third output filter circuit, and the program-controlled unit is integrated with an isolated voltage acquisition circuit, which is used to collect voltage parameters of the servo power supply module, the inertial power supply module and the program-controlled power supply module. The program-controlled unit is fully isolated, ESD protected and electromagnetically compatible, which enhances the anti-interference capability of the program-controlled part.
[0028] The main function of the power supply unit is to provide 2-way DC24V output, which is mainly composed of the third input filter circuit, the third DC-DC unit, and the third output filter circuit. The programmable power supply is controlled output, and the optical coupler APS1019-W is used to achieve electrical isolation between the control signal and the power module, and the control signal is low enabled. Common-mode inductors, common-mode capacitors, and differential-mode capacitors are used to design filter circuits at the input and output ends to enhance the protection against power switch noise and electromagnetic interference, and optimize the power output performance quality.
[0029] Reference Fig.10 As shown, the program control unit includes a single-chip microcomputer MCU. In this embodiment, the MCU adopts GD32F103C8T6 of GigaDevice, with a main frequency of 108M, 37 IO ports, 3 serial ports, 1 CAN port, 2 IIC ports, 2 SPI ports, and 10 12 ADC channels. The MCU is responsible for completing functions such as voltage status detection, power-on control, and RS422 communication; The programmable control unit has an RS422 interface and control circuit, and has the function of communicating with an external host computer. The two DC channels of the programmable power supply module can be output or standby according to the RS422 serial port instructions. At the same time, the power supply has a voltage detection function, which can realize the collection and detection of the output voltage of servo power supply 1, servo power supply 2, inertia power supply and programmable power supply, and forward the collected voltage data to external equipment through isolated RS422.
[0030] The voltage detection circuit is designed using high-reliability isolated voltage sampling amplifiers, digital isolators, and op amps. The voltage sampling amplifier uses Suzhou Naxin Microelectronics' Nsi1311-DSWR, which is a high-performance isolation amplifier with a single-ended input signal range of 0.1V to 2V, a fixed gain of 1, and provides differential analog outputs. Low offset and gain drift ensure accuracy over the entire temperature range, and high common-mode transient immunity ensures that the chip can provide accurate and reliable measurement results even in the presence of high-power switches. The isolated power supply uses Naxin Microelectronics' NsiP8942W1-DSWR, which supports 4500Vrms insulation voltage, while providing high electromagnetic immunity and low radiation, and provides 5V to 5V, 5V to 3.3V, and 3.3V to 5V isolated voltage conversion.
[0031] Auxiliary power supply design, the programmable power supply control part completes the functions of voltage acquisition, data processing, enable control and external communication. This part is electrically isolated from the power part and starts working when powered on. An isolated auxiliary power supply is designed, and GLM06WAE24S05H is selected. This power module is a wide-range, highly reliable, and highly efficient single-channel output isolated DC / DC converter. The input voltage of this module is 9-40V, the output voltage is 5V, and the maximum output power is 6W. It has functions such as input undervoltage protection, output overvoltage protection, overcurrent protection, and short-circuit protection. BL1117-33CX is selected to convert 5V to 3.3 to provide auxiliary power for the control circuit.
[0032] To sum up, the advantages of the present invention are: reducing power ripple through the filtering circuit of the servo power module, enhancing the protection capability against power switch noise and electromagnetic interference, optimizing the power output performance quality, preventing current backflow when the power is turned off by connecting a diode in series, and utilizing the reverse cutoff characteristics of the diode to have an anti-reverse connection effect, thereby protecting the load equipment and ensuring the stability of the power supply box; through circuit redundancy design, ensuring that when one group of power supplies fails, the other group of power supplies can continue to provide stable power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the power supply box; and through the uninterruptible power supply design, being able to provide continuous and stable power output when the external power is disconnected, thereby ensuring power supply reliability.
[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A reinforced power supply box with uninterrupted power supply, characterized in that: Including UPS power module, servo power module, inertial power module and programmable power module; The input end of the servo power module is electrically connected to the output end of the UPS power module to provide DC60V power output. The servo power module includes a servo power module 1 and a servo power module 2. The servo power module 1 and the servo power module 2 are two identical power modules. The servo power module is integrated with an input filter circuit and an output filter circuit to reduce power ripple, enhance the protection against power switch noise and electromagnetic interference, and optimize the power output performance quality. The input end of the inertial power module is electrically connected to the output end of the UPS power module. The inertial power module integrates two sets of DC-DC circuits to provide stable DC24V power output without interrupting the normal operation of the load equipment, thereby improving the reliability of the system. The input end of the programmable power module is electrically connected to the output end of the UPS power module, and is electrically connected to the servo power module and the inertial power module, so as to provide two controlled DC24V outputs and collect voltage parameter information of the servo power module and the inertial power module.
2. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The UPS power module is electrically connected to an external AC220V input power source that has been filtered by a filter. The UPS power module includes a UPS power control unit and a UPS power battery unit. The UPS power control unit is used to convert external AC power into DC power as the DC input of the servo power module, the inertial power module and the programmable power module. When the external power is disconnected, the UPS power module automatically switches to battery mode, and the UPS power battery unit supplies power to the servo power, the inertial power and the programmable power. In the battery power supply mode, the buzzer of the UPS power module alarms. When fully charged, the UPS power battery unit can provide uninterrupted power supply for not less than 30 minutes, and the power supply power is not less than 400W. After the external power is restored, the buzzer stops alarming and automatically switches to the external power mode, and the UPS power control unit charges the battery.
3. The uninterruptible power supply reinforced power supply box according to claim 2, characterized in that: The UPS power module includes a UPS power control unit and a UPS power battery unit. The UPS power control unit integrates an input protection circuit, an input lightning protection and transient voltage suppression circuit, an input filter circuit, an AC-DC power subunit, a surge suppression circuit, a DC-DC subunit and a DC output filter circuit. The UPS power battery unit includes a charging subunit, a battery subunit and a discharge subunit. A fuse is provided at the input end of the AC-DC power subunit. The surge suppression circuit integrates a varistor, and the varistor is used to clamp the voltage at a relatively fixed voltage value.
4. The uninterruptible power supply reinforced power supply box according to claim 2, characterized in that: The output end of the input lightning protection and transient voltage suppression circuit is electrically connected to the input end of the input filter circuit, the input end of the input filter circuit is electrically connected to the input end of the surge suppression circuit, the output end of the surge suppression circuit is electrically connected to the input end of the AC-DC power supply subunit, the output end of the DC-DC subunit is electrically connected to the input end of the DC output filter circuit and the input end of the charging subunit, the output end of the discharge subunit is electrically connected to the DC output filter circuit, and the output end of the DC output filter circuit is used to output DC28V power.
5. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The servo power supply module includes an input filter circuit, a first DC-DC unit, an output filter circuit and an external interface circuit. The filter circuit integrates a common-mode inductor, a common-mode capacitor and a Y capacitor to reduce power ripple and enhance the protection against power switch noise and electromagnetic interference. A diode is connected in series at the output end of the servo power supply module. The rated voltage of the diode is 200V and the rated current is 20A. The diode is used to prevent current backflow when the power is turned off. The output end of the input filter circuit is electrically connected to the input end of the first DC-DC unit, and the output end of the first DC-DC unit is electrically connected to the input end of the output filter circuit.
6. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The inertial power supply module includes a second input filter circuit, a second DC-DC unit and a second output filter. The second DC-DC unit integrates two groups of identical DC-DC circuits. Each group of DC-DC circuits can bear the maximum load of the power supply. The output ends of the two groups of DC-DC circuits are output in parallel through diodes for load power supply. When one group of power supplies fails, the other group of power supplies can continue to provide stable power output.
7. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The programmable power supply module includes a programmable control unit and a power supply unit, the power supply unit is integrated with a third input filter circuit, a third DC-DC unit and a third output filter circuit, the programmable control unit is integrated with an isolated voltage acquisition circuit, and the isolated voltage acquisition circuit is used to collect voltage parameters of the servo power supply module, the inertial power supply module and the programmable power supply module.
8. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The data output end of the programmable control unit communicates and interacts with the isolated RS422 circuit. The isolated voltage acquisition circuit integrates a high-reliability isolated voltage sampling amplifier and a digital isolator. The single-ended input signal range of the voltage sampling amplifier is 0.1V to 2V, and the fixed gain is 1.
9. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The power supply unit of the programmable power supply module mainly functions to provide 2-way DC24V direct current output, the programmable power supply module is output-controlled, and the programmable power supply module is electrically connected to the optocoupler.
10. The uninterruptible power supply reinforced power supply box according to claim 1, characterized in that: The power supply unit of the programmable power supply module includes an auxiliary power supply sub-unit, which integrates a U20 chip and a U21 chip. The first and second pins of the U20 chip are connected in parallel with capacitors C84 and C85. The first and second pins of the U20 chip are electrically connected to an inductor L2 and are electrically connected to a 27V voltage input. The input voltage of the auxiliary power supply sub-unit is 9-40V, the output voltage is 5V, and the maximum output power is 6W.