High-reliability plug-in power supply

Abstract

The invention discloses a high-reliability plug-in power supply, which comprises a power module, a main control module, a signal module and an interface module, and is characterized in that the power module comprises a power output unit 1, a power output unit 2 and an auxiliary power supply unit; the signal module comprises a voltage sampling unit, a current sampling unit, a temperature sampling unit and an I2C isolation unit. The master control module adopts a single-chip microcomputer, and peripherals comprise an ADC unit, an I2C communication unit and a GPIO unit. The source logic function is clear, modular design is facilitated, module reuse is facilitated, and the number of functional modules can be increased or decreased or fault units can be rapidly replaced for maintenance in actual work.

Description

Technical Field

[0001] The invention relates to power conversion equipment, in particular to a high-reliability plug-in power supply. Background Art

[0002] In the field of power conversion, due to the variety of equipment working scenarios, there are many demands for customized plug-in power supplies. However, the diversity of demands often leads to the diversity of designs, which further leads to different types of plug-in power supplies, which is not convenient for product management and iteration, and causes failures to often present complex and diverse states, making inspection and maintenance difficult. Based on the above, how to improve the versatility of power supply design and facilitate quick troubleshooting is a technical problem that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a plug-in power supply with high reliability.

[0004] The technical solution to achieve the purpose of the present invention is: a high-reliability plug-in power supply, including a power module, a main control module, a signal module and an interface module, wherein: The power module includes power output unit 1, power output unit 2 and auxiliary power supply unit. Power output unit 1 converts 48V DC power into 12V DC power, outputs it as the first channel after filtering, and connects to output voltage 1 of the interface module; power output unit 2 converts 48V DC power into 3.3V DC power, outputs it as the second channel after filtering, and connects to output voltage 2 of the interface module; auxiliary power supply unit converts 48V DC power into 5V DC power to supply power to the main control module and signal module; The signal module includes a voltage sampling unit, a current sampling unit, a temperature sampling unit and an I2C isolation unit. The voltage sampling unit samples the output voltage values ​​of the power output unit 1 and the power output unit 2; the current sampling unit samples the output current values ​​of the power output unit 1 and the power output unit 2; the temperature sampling unit samples the working environment temperature value of the power supply; the I2C isolation unit isolates and transmits the I2C signals of the main control module and the interface module; The main control module adopts a single-chip microcomputer, and the peripherals include an ADC unit, an I2C communication unit and a GPIO unit. The ADC unit receives the analog signals of the voltage value, current value and temperature value obtained by the signal module and converts them into discrete digital values; the I2C communication unit receives the host computer instructions and sends the various digital values ​​processed by the ADC unit and the power supply working status information to the host computer; the GPIO unit detects the communication address code and switch remote control instructions of the interface module, enables power output unit 1 and power output unit 2, and connects to the interface module to display the fault alarm and panel indication status of the power supply.

[0005] Furthermore, the main control module is provided with I2C communication unit 1 and I2C communication unit 2, the signal module is provided with I2C isolation unit 1 and I2C isolation unit 2, and the interface module is provided with communication channel 1 and communication channel 2, wherein I2C communication unit 1 is connected to I2C isolation unit 1, and I2C isolation unit 1 is connected to communication channel 1; I2C communication unit 2 is connected to I2C isolation unit 2, and I2C isolation unit 2 is connected to communication channel 2.

[0006] Furthermore, communication channel 1 and communication channel 2 are used as external message interfaces reserved for the power supply, and the two groups of interfaces back up each other.

[0007] Furthermore, the return message defaults and is transmitted to the host computer via communication channel 1. However, when only one communication channel receives the message, the corresponding channel should return the message value and attach communication failure alarm information.

[0008] High reliability plug-in power supply, the working process is: Input DC 48V to power on, the auxiliary power supply unit outputs DC 5V to the main control module, and the main control module works; The GPIO unit of the main control module detects the level signal of the switch remote control in the interface module, enables the corresponding power output unit, and outputs the corresponding channel voltage; The sampling unit of the signal module detects the analog values ​​of the voltage, current and temperature of the power supply and sends them to the ADC unit of the main control module. After being processed by the software filtering algorithm, they are compared with the preset parameter values ​​in the single-chip microcomputer to determine whether the working status of the power supply is normal, realize real-time monitoring of the working status, and issue an alarm through the interface module; The GPIO unit of the main control unit detects the communication address in the interface module to obtain the communication address of the power supply. After receiving the query command from the host computer, the voltage value, current value, temperature value and working status information are reported to the host computer through the I2C isolation unit of the signal module.

[0009] Compared with the prior art, the present invention has the following significant advantages: 1) The power supply logic function is clear, which facilitates modular design and module reuse, and is beneficial to increasing or decreasing the number of functional modules in actual work or quickly replacing faulty units for maintenance; 2) The health management of the power supply adopts redundant communication backup to further increase reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the functional logic block diagram of the power system; DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0012] The present invention provides a high reliability plug-in power supply, the overall topology is as follows Figure 1 As shown, it includes a power module, a main control module, a signal module and an interface module.

[0013] The power module includes power output unit 1, power output unit 2 and auxiliary power supply unit. The main function of power output unit 1 is to convert 48V DC into 12V DC, which is output as the first channel after filtering and connected to the output voltage 1 of the interface module; the main function of power output unit 2 is to convert 48V DC into 3.3V DC, which is output as the second channel after filtering and connected to the output voltage 2 of the interface module; the main function of the auxiliary power supply unit is to convert 48V DC into 5V DC to power the main control module and the signal module.

[0014] The signal module includes a voltage sampling unit, a current sampling unit, a temperature sampling unit and an I2C isolation unit. The voltage sampling unit samples the output voltage values ​​of the power output unit 1 and the power output unit 2, the current sampling unit samples the output current values ​​of the power output unit 1 and the power output unit 2, the temperature sampling unit samples the working environment temperature value of the power supply, and the I2C isolation unit isolates and transmits the I2C signals of the main control module and the interface module to improve the stability of communication.

[0015] The core device of the main control module is a single-chip microcomputer, and the specific peripheral implementation includes an ADC unit, an I2C communication unit, and a GPIO unit. The ADC unit receives continuously changing analog signals such as voltage values, current values, and temperature values ​​obtained by the sampling unit in the signal module, and converts them into discrete digital values. The I2C communication unit receives instructions from the host computer and can send various digital values ​​processed by the ADC unit and power supply working status information to the host computer. The GPIO unit detects the communication address code and switch remote control instructions of the interface module, and enables power output unit 1 and power output unit 2. In addition, it is connected to the interface module to display the fault alarm and panel indication status of the power supply.

[0016] The detailed workflow is as follows: Input DC 48V to power on, the auxiliary power supply unit outputs DC 5V to the main control module, and the main control module works.

[0017] The main control module detects the level signal of the switch remote control in the interface module, and then enables the corresponding power output unit to output the corresponding channel voltage.

[0018] The sampling unit of the signal module detects the analog quantity of the power supply and sends it to the ADC unit of the main control module. After being processed by the software filtering algorithm, it is compared with the preset parameter values ​​in the microcontroller to further determine whether the working status of the power supply is normal, and realize real-time monitoring of the working status. Further, an alarm can be issued through the interface module.

[0019] The main control unit detects the communication address in the interface module to obtain the communication address of the power supply. After receiving the query command from the host computer, it can report information such as voltage value, current value, temperature value and working status to the host computer through the I2C isolation unit of the signal module.

[0020] I2C isolation unit 1 and I2C isolation unit 2, together with communication channel 1 and communication channel 2, are used as external message interfaces reserved for the power module, and the two groups of interfaces are backed up for each other. The return message is transmitted to the host computer by communication channel 1 by default, but when only one communication channel receives the message, the corresponding channel should return the message value and attach the communication fault alarm information to further ensure the stability of communication.

[0021] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0022] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A high reliability plug-in power supply, characterized in that: It includes power module, main control module, signal module and interface module, among which: The power module includes power output unit 1, power output unit 2 and auxiliary power supply unit. Power output unit 1 converts 48V DC power into 12V DC power, outputs it as the first channel after filtering, and connects to output voltage 1 of the interface module; power output unit 2 converts 48V DC power into 3.3V DC power, outputs it as the second channel after filtering, and connects to output voltage 2 of the interface module; auxiliary power supply unit converts 48V DC power into 5V DC power to supply power to the main control module and signal module; The signal module includes a voltage sampling unit, a current sampling unit, a temperature sampling unit and an I2C isolation unit. The voltage sampling unit samples the output voltage values ​​of the power output unit 1 and the power output unit 2; the current sampling unit samples the output current values ​​of the power output unit 1 and the power output unit 2; the temperature sampling unit samples the working environment temperature value of the power supply; the I2C isolation unit isolates and transmits the I2C signals of the main control module and the interface module; The main control module adopts a single-chip microcomputer, and the peripherals include an ADC unit, an I2C communication unit and a GPIO unit. The ADC unit receives the analog signals of the voltage value, current value and temperature value obtained by the signal module and converts them into discrete digital values; the I2C communication unit receives the host computer instructions and sends the various digital values ​​processed by the ADC unit and the power supply working status information to the host computer; the GPIO unit detects the communication address code and switch remote control instructions of the interface module, enables power output unit 1 and power output unit 2, and connects to the interface module to display the fault alarm and panel indication status of the power supply.

2. The high reliability plug-in power supply according to claim 1, characterized in that: The main control module is provided with I2C communication unit 1 and I2C communication unit 2, the signal module is provided with I2C isolation unit 1 and I2C isolation unit 2, and the interface module is provided with communication channel 1 and communication channel 2, wherein I2C communication unit 1 is connected to I2C isolation unit 1, and I2C isolation unit 1 is connected to communication channel 1; I2C communication unit 2 is connected to I2C isolation unit 2, and I2C isolation unit 2 is connected to communication channel 2.

3. The high reliability plug-in power supply according to claim 2, characterized in that: Communication channel 1 and communication channel 2 are reserved as external message interfaces for the power supply, and the two groups of interfaces back up each other.

4. The high reliability plug-in power supply according to claim 2, characterized in that: The return message is transmitted to the host computer by communication channel 1 by default. However, when only one communication channel receives the message, the corresponding channel should return the message value and attach the communication fault alarm information.

5. The high reliability plug-in power supply according to claim 1, characterized in that: The working process is: Input DC 48V to power on, the auxiliary power supply unit outputs DC 5V to the main control module, and the main control module works; The GPIO unit of the main control module detects the level signal of the switch remote control in the interface module, enables the corresponding power output unit, and outputs the corresponding channel voltage; The sampling unit of the signal module detects the analog values ​​of the voltage, current and temperature of the power supply and sends them to the ADC unit of the main control module. After being processed by the software filtering algorithm, they are compared with the preset parameter values ​​in the single-chip microcomputer to determine whether the working status of the power supply is normal, realize real-time monitoring of the working status, and issue an alarm through the interface module; The GPIO unit of the main control unit detects the communication address in the interface module to obtain the communication address of the power supply. After receiving the query command from the host computer, the voltage value, current value, temperature value and working status information are reported to the host computer through the I2C isolation unit of the signal module.

Images