CN220855623U - Power management system - Google Patents

Abstract

The utility model provides a power management system applied to a chassis, which is provided with a plurality of working boards, wherein the power management system comprises a power management board, the power management board is connected between a power supply module and the working boards, and the power management board can delay working power supplied by the power supply module for a preset time and then electrify the working boards. According to the power management system, the power management plate is arranged, the working power provided by the power supply module is delayed for the preset time and then output to the working board card, namely, the working power is powered on the working board card after being stabilized by the preset time of the working power delay, so that the risk of damaging the working board card by large transient voltage and impact current can be eliminated, and the power-on safety of the working board card is improved.

Description

Power management system

Technical Field

The utility model relates to the technical field of power management, in particular to a power management system.

Background

At present, the power supply scheme of the chassis has a plurality of design defects, and reliability problems are easy to generate. The power supply framework of the chassis mainly comprises a plurality of AC-DC power supply modules, 220V alternating current is converted into 24V direct current, +/-15V direct current, 5V direct current and the like, and the direct current is directly connected to the backboard of the chassis by using a cable, so that power is supplied to the board card inserted on the backboard. The problem of direct connection power supply of the power supply through the cable is that when the board card is electrified or the chassis power supply is plugged in and out, uncertain factors such as transient increase of voltage amplitude of direct current, impact current and the like can be caused, and damage of components of the board card in the chassis is caused. In addition, the monitoring means of the power supply of the chassis is lacking, and the state of the power supply of the chassis cannot be known in real time. In addition, the power supply monitoring of each board card in the case is processed by the current board card, and then the monitored information is uploaded through the no-interaction channel of the case, so that the current power supply state of the board card cannot be known when the board card fails or the no-interaction channel fails.

Disclosure of utility model

The utility model aims to provide a power management system which is used for solving the problem that the board card in a chassis is damaged due to uncertain factors such as transient increase of voltage amplitude, impact current and the like which are easily caused when the board card in the chassis is directly powered in the prior art.

In order to solve the technical problems, the utility model provides a power management system applied to a chassis, wherein the chassis is provided with a plurality of working boards, and the power management system is characterized by comprising a power management board, wherein the power management board is used for being connected between a power supply module and the working boards, and the power management board can delay working power supplied by the power supply module for a preset time and then electrify the working boards.

Optionally, the power management board card includes a main control module and a first power management module, where the first power management module includes a first driving unit and a first switch unit, an input end of the first switch unit is used to connect with the power supply module, an output end of the first switch unit is used to connect with the working board card, and the first driving unit is used to connect with the main control module, a control end of the first switch unit, the power supply module and the working board card; the main control module is used for driving the first switch unit to be conducted between the input end and the output end through the first drive unit after the first drive unit obtains the voltage of the working power supply to reach the preset voltage and the time for obtaining the working power supply reaches the preset time.

Optionally, the first switching unit includes a first switching tube and a second switching tube connected in parallel, an input end of the first switching tube and an input end of the second switching tube are used together as an input end of the first switching unit, and an output end of the first switching tube and an output end of the second switching tube are used together as an output end of the first switching unit; the control end of the first switching tube and the control end of the second switching tube are connected with the first driving unit; the first driving unit is provided with a double driving pin and is used for driving the first switching tube and the second switching tube to be simultaneously turned on or off.

Optionally, the first driving unit includes a hot plug controller, and the first switching tube and the second switching tube are both MOS tubes or all triodes.

Optionally, the power management system includes at least two first power management modules, and the at least two first power management modules respectively correspond to different working power supplies.

Optionally, the power management system includes a second power management module corresponding to the working boards one by one, and the second power management module adjusts the power-on sequence of the working boards of different working power supplies to be different.

Optionally, the second power management module includes second drive unit and third switch tube, the input of third switch tube is connected first power management module, the output of third switch tube is connected work integrated circuit board, the control end of third switch tube is connected second drive unit, second drive unit still with main control module is connected, main control module still is used for order about second drive unit will third switch tube switches on or cuts off.

Optionally, the second driving unit includes a hot plug controller, and the third switch tube is a MOS tube or a triode.

Optionally, the second power management module includes a power system management chip and a DCDC unit, an input end of the DCDC unit is connected with the first power management module, an output end of the DCDC unit is connected with the work board card, and the power system management chip drives the DCDC unit to be turned on or turned off.

Optionally, the power management system further includes a communication module, the communication module includes a first communication unit and a second communication unit, the second power management module collects power information of a corresponding working board card and then transmits the power information to the main control module through the second communication unit, and the main control module transmits the power information of the working board card to the server through the first communication unit.

Optionally, the power management system further includes a status indication module, where the status indication module has different indication states, and different indication states correspond to different operation states of the working power supply.

Optionally, the power management system further includes a temperature acquisition module, where the temperature acquisition module is configured to acquire a temperature of a power path of the working power supply conveyed by the first power management module, and generate a warning signal when the acquired temperature is greater than a temperature threshold.

According to the power management system, the working power provided by the power supply module can be delayed for the preset time and then output to the working board card through the power management board card, namely, the working power is stably powered on the working board card after being delayed for the preset time, so that the risk of damaging the working board card by large transient voltage and impact current can be eliminated, and the power-on safety of the working board card is improved.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the utility model and do not constitute any limitation on the scope of the utility model. Wherein:

FIG. 1 is a schematic diagram of a power management system according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of a power management board of a power management system according to an embodiment of the utility model;

FIG. 3 is a schematic diagram of a second power management module according to an embodiment of the utility model;

Fig. 4 is another schematic diagram of a second power management module according to an embodiment of the utility model.

In the accompanying drawings:

100-a power management board card;

10-a first power management module; s-a first switch unit; q1-a first switching tube; q2-a second switching tube; u1-a first driving unit;

20-a second power management module; q3-a third switching tube; u2-a second driving unit; a U3-DCDC unit; u4-power system management chip;

30-a main control module;

41-a first communication unit; 42-a second communication unit;

A 50-status indication module;

60-a temperature acquisition module;

70-a memory module;

80-a power module;

90-server;

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.

As used in this disclosure, the singular forms "a," "an," and "the" include plural referents, the term "or" are generally used in the sense of comprising "and/or" and the term "several" are generally used in the sense of comprising "at least one," the term "at least two" are generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of features indicated. Thus, a feature defining "first," "second," "third," or "third" may explicitly or implicitly include one or at least two such features, with "one end" and "another end" and "proximal end" and "distal end" generally referring to the respective two portions, including not only the endpoints, but also the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either a fixed connection, a removable connection, or as being integral therewith; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this disclosure, an element disposed on another element generally only refers to a connection, coupling, cooperation or transmission between two elements, and the connection, coupling, cooperation or transmission between two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below, or on one side, of the other element unless the context clearly indicates otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

FIG. 1 is a schematic diagram of a power management system according to an embodiment of the utility model. As shown in fig. 1, the present utility model provides a power management system applied to a chassis, where the chassis has a plurality of working boards, and generally, a back board is disposed inside the chassis, and the plurality of working boards are inserted and mounted on the back board. The power management system includes a power management board 100 and a plurality of second power management modules 20, where the power management board 100 and the second power management modules 20 can perform information interaction, for example, information interaction can be performed through an IIC bus disposed on a back board of the chassis, and the power management board 100 can perform information interaction with the server 90, for example, information interaction can be implemented through ethernet. The second power management module 20 is typically provided separately from the power management board 100, and the second power management module 20 is typically provided on a work board, with the power management board 100 being provided as separate hardware. Fig. 2 is a schematic diagram of a power management board 100 of a power management system according to an embodiment of the utility model, specifically, referring to fig. 2, the power management board 100 has a communication module, the communication module includes a first communication unit 41 and a second communication unit 42, the power management board 100 has a first power management module 10 and a main control module 30, the first power management module 10 is connected between the power supply module and a working board, the main control module 30 is connected with the first power management module 10, the second power management module 20 can transmit power information of the corresponding working board to the main control module 30 through the second communication unit 42 after collecting power information of the working board, and the main control module 30 can transmit the power information of the working board to the server 90 through the first communication unit 41. The first communication unit 41 may be an ethernet, and the second communication unit 42 may be an IIC bus. The communication module configured in this embodiment is used to implement data interaction between the server 90 and the power board card and data interaction between the power board card and the second power management module 20, and is not dependent on the original data interaction channel of the chassis, and may be considered as an independent data interaction link, so that even when the data interaction channel of the chassis fails, information data of the working power source may still be interacted, thereby improving security.

With continued reference to fig. 2, the power management board 100 may delay the working power provided by the power supply module for a preset time and then power up the working board, and specifically, the main control module 30 may drive the first power management module 10 to delay the working power provided by the power supply module for a preset time and then power up the working board, so that the working board is started and works. So, through setting up first power management module 10 and main control module 30 on power management integrated circuit board 100, can export the work integrated circuit board after the working power supply time delay that power supply module provided presets time, namely make working power supply stable back power on the work integrated circuit board promptly, can eliminate great transient voltage and impact current and damage the risk of work integrated circuit board, promote the security of work integrated circuit board power on. The main control module 30 may be a CPU or FPGA chip. Referring to fig. 2, the first power management module 10 has an input IN1 and an output OUT1 with respect to the operating power.

Further, the first power management module 10 includes a first driving unit U1 and a first switching unit S, an input end of the first switching unit S is connected to the power supply module, an output end of the first switching unit S is used for connecting with the working board card, the first driving unit U1 is communicatively connected to the main control module 30, and the first driving unit U1 is also connected to a control end of the switching unit, the power supply module and the working board card; the main control module 30 conducts between the input end and the output end of the first switch unit S through the first driving unit U1 after the voltage of the working power supply acquired by the first driving unit U1 reaches the preset voltage and the time of the working power supply acquired by the first driving unit U1 reaches the preset time, so that the working power supply provided by the power supply module is output to the working board card, and the working board card is enabled to be electrically started to work.

Further, the first switching unit S includes a first switching tube Q1 and a second switching tube Q2 connected in parallel, the input end of the first switching tube Q1 and the input end of the second switching tube Q2 are used together as the input end of the first switching unit S, the output end of the first switching tube Q1 and the output end of the second switching tube Q2 are used together as the output end of the first switching unit S, and the control end of the first switching tube Q1 and the control end of the second switching tube Q2 are connected with the first driving unit U1; the first driving unit U1 has a dual driving pin for driving the first switching tube Q1 and the second switching tube Q2 to be simultaneously turned on or simultaneously turned off. The first switching tube Q1 and the second switching tube Q2 may be power switching tubes, which may limit the input current, avoid overcurrent, and may be MOS tubes and triodes, and may not limit the types of the MOS tubes and the triodes, and the types of the power switching tubes of the first switching tube Q1 and the second switching tube Q2 are preferably the same.

The first switching tube Q1 and the second switching tube Q2 are NMOS tubes, the source of the first switching tube Q1 and the source connection of the second switching tube Q2 are commonly used as the input end of the first switching unit S, the drain of the first switching tube Q1 and the drain connection of the second switching tube Q2 are commonly used as the output end of the first switching unit S, the gate of the first switching tube Q1 is connected to one of the driving pins of the first driving unit U1, and the gate of the second switching tube Q2 is connected to the other driving pin of the first driving unit U1. The first switching tube Q1 and the second switching tube Q2 are PMOS tubes, the drain electrode of the first switching tube Q1 and the drain electrode of the second switching tube Q2 are connected together to serve as the input end of the first switching unit S, the source electrode of the first switching tube Q1 and the source electrode of the second switching tube Q2 are connected together to serve as the output end of the first switching unit S, the grid electrode of the first switching tube Q1 is connected with one driving pin of the first driving unit U1, and the grid electrode of the second switching tube Q2 is connected with the other driving pin of the first driving unit U1. The first switching tube Q1 and the second switching tube Q2 are NPN type triodes, the collector of the first switching tube Q1 and the collector of the second switching tube Q2 are connected together to serve as the input end of the first switching unit S, the emitter of the first switching tube Q1 and the emitter of the second switching tube Q2 are connected together to serve as the output end of the first switching unit S, the base of the first switching tube Q1 is connected with one driving pin of the first driving unit U1, and the base of the second switching tube Q2 is connected with the other driving pin of the first driving unit U1. The first switching tube Q1 and the second switching tube Q2 are PNP type triodes, the emitter of the first switching tube Q1 and the emitter of the second switching tube Q2 are connected together to serve as the input end of the first switching unit S, the collector of the first switching tube Q1 and the collector of the second switching tube Q2 are connected together to serve as the output end of the first switching unit S, the base of the first switching tube Q1 is connected with one driving pin of the first driving unit U1, and the base of the second switching tube Q2 is connected with the other driving pin of the first driving unit U1.

Preferably, the first driving unit U1 may further detect the current and the voltage of the loop that transmits the working power to the working board card after the first switching unit S is closed, so as to monitor the current and the voltage of the working power, and ensure the safety during the power-on process. The first driving unit U1 may be, for example, a hot plug controller, where the hot plug controller has a wide range of operating voltage and power monitoring functions, can detect the current and voltage of the loop, has an IIC communication interface, and can perform data interaction with the main control module 30.

In general, the working power supplies required by different working boards may be different, for example, one working board requires 5.0V voltage, another working board requires 12V voltage, and another working board requires 24V voltage, preferably, the power management board 100 of the present embodiment has at least two first power management modules 10 (for example, two first power management modules 10 are exemplified in fig. 2), and each of the at least two first power management modules 10 corresponds to a different working power supply, for example, one of the first power management modules corresponds to a working power supply with 5.0V voltage, and the other one corresponds to a working power supply with 12V voltage, so as to meet the power-up requirement of the board requiring a different working power supply. It should be noted that, the same first power management module 10 may be shared by the two working boards with the same level of voltage for power up, or one first power management module 10 may be used for power up, for example, two working boards each need a working power source with a voltage of 5.0V, and then the two working boards may use the same first power management module 10 for power up with a voltage of 5.0V. For a specific application, for a work board card that needs different levels of voltage, multiple first power management modules 10 may be configured based on multiple hot plug controllers and MOSs. In addition, for the working power supply with larger current, the current and the voltage on the loop can be monitored and controlled based on a plurality of hot plug controllers and a plurality of first power management modules 10 configured by MOS tubes, so as to reduce the heating value.

In this embodiment, the second power management modules 20 are in one-to-one correspondence with the working boards, and the second power management modules 20 are connected to the first power management modules 10 of the power management boards 100, so that the power-on sequences of the working boards of different working power supplies can be adjusted to be different. It should be noted that, the input of the second power management module 20 with respect to the operating power is IN2, and the output is OUT2. For example, a part of the working boards need 5.0V voltage and another part of the working boards need 12V voltage, the main control module 30 may drive the second power management module 20 corresponding to the 5.0V voltage to power up the part of the working boards that need 5.0V voltage first, and then drive the second power management module 20 corresponding to the 12V voltage to power up the part of the working boards that need 12V voltage. Therefore, the working boards which need different levels of voltage are powered on sequentially according to the sequence, and larger current impact caused by the simultaneous power on of all the working boards can be avoided.

Fig. 3 is a schematic diagram of a second power management module 20 of the power management system according to an embodiment of the utility model. In an embodiment, referring to fig. 3, when the power supply module is a module in the chassis, that is, when the provided working power is the power supply of the chassis, the configuration of the second power management module 20 includes a second driving unit U2 and a third switching tube Q3, an input end of the third switching tube Q3 is connected to the first power management module 10, an output end of the third switching tube Q3 is connected to a corresponding working board card, a control end of the third switching tube Q3 is connected to the second driving unit U2, the second driving unit U2 is further connected to the main control module 30, and the main control module 30 drives the second driving unit U2 to turn on or off the third switching tube Q3. The third switching transistor Q3 is a MOS transistor or a triode, such as an NMOS transistor, a PMOS transistor, an NPN transistor or a PNP transistor, and the detailed description of the first switching transistor Q1 and the second switching transistor Q2 is omitted herein. Preferably, the second driving unit U2 includes a hot plug controller, and the hot plug controller can monitor and control the current and voltage of the working power supply input to the working board card, and in particular, the hot plug controller can transmit the power information about the working power supply on the working board card to the main control module 30, as described above with reference to the hot plug controller.

Fig. 4 is another schematic diagram of the second power management module 20 of the power management system according to an embodiment of the utility model. In another embodiment, referring to fig. 4, if the working board card in the chassis needs to perform voltage processing on the working power supply and then power the working power supply, the second power management module 20 includes a power system management chip U4 and a DCDC unit U3, the DCDC unit U3 may perform direct current boosting or direct current stepping down processing on the working power supply, so as to ensure stability of the voltage input to the working board card, an input end of the DCDC unit U3 is connected to the first power management module 10, an output end of the DCDC unit U3 is connected to the working board card, and the main control module 30 drives the power system management chip U4 to turn on or off the DCDC unit U3, and performs boosting or stepping down processing when the DCDC unit U3 is turned on, and stops boosting or stepping down when the DCDC unit U3 is turned off. Preferably, the power system management chip U4 may detect the voltage and current input by the DCDC unit U3, and may detect the voltage and current output by the DCDC unit U3, so as to monitor the input and output of the DCDC unit U3, and the power system management chip U4 may transmit the monitored power information to the main control module 30 of the power management board 100 through the IIC bus link disposed on the back board.

Preferably, the power management board 100 further has a status indication module 50, where the status indication module 50 has different indication states, and the different indication states correspond to different operation states of the working power supply, for example, the indication states may reflect whether the working power supply is successful in powering on the corresponding working board, whether an overcurrent condition is generated in a loop for powering on the working board, and so on. In an embodiment, the status indication module 50 may be a plurality of indicator lamps (LED lamps), each LED corresponds to an operating power source with a voltage level, and the running status of the corresponding operating power source can be reflected by the color change of the indicator lamp, the flashing frequency of the light, and so on.

Preferably, the power board further includes a temperature acquisition module 60, where the temperature acquisition module 60 is configured to acquire a temperature of a power path through which the first power management module 10 delivers the working power, and generate a warning signal when the acquired temperature is greater than a temperature threshold. The temperature acquisition module 60 may be a temperature acquisition chip, a temperature sensor, or the like. The temperature collection module 60 is configured to collect the temperature of the power management board 100, specifically, distribute the temperature collection module 60 near the main loop of each power channel, collect the temperature of the loop on which the power board walks with large current (i.e. the loop in which the first power management module 10 carries current), and generate a warning signal when the collected temperature is greater than a temperature threshold value, so as to prompt an operator that the power management board 100 generates an overheat condition. The warning signal may be, for example, a visual signal, an audible signal, or an audio-visual signal in combination of both.

Further, the power management board 100 further has a storage module 70, where the storage module 70 is configured to store the power data information about the working power supply on the corresponding board fed back by the second power management module 20, and can synchronously upload the stored information to the server 90, so as to facilitate remote checking and data analysis by an operator. The memory module 70 may be an EEPROM chip, but due to the limited amount of memory space of the EEPROM chip, the EEPROM chip may still store power data for a period of time when the data is stored fully and then the original data is covered, and when the ethernet to the server 90 fails.

Further, the power management system further includes a power module 80, and the power module 80 is used for supplying power to each functional module on the power board card, so as to ensure that each functional module operates normally. The power module 80 is preferably a power source already in the chassis, which reduces resource allocation.

While the utility model has been described in terms of preferred embodiments, the above embodiments are not intended to limit the utility model. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art without departing from the scope of the technology, or the technology can be modified to be equivalent. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims (12)

1. The power management system is applied to a case, and the case is provided with a plurality of working boards, and is characterized by comprising a power management board which is used for being connected between a power supply module and the working boards, wherein the power management board can delay working power supplied by the power supply module for a preset time and then electrifies the working boards.

2. The power management system of claim 1, wherein the power management board comprises a main control module and a first power management module, the first power management module comprises a first driving unit and a first switch unit, an input end of the first switch unit is used for being connected with the power supply module, an output end of the first switch unit is used for being connected with the working board, and the first driving unit is used for being connected with the main control module, a control end of the first switch unit, the power supply module and the working board; the main control module is used for driving the first switch unit to be conducted between the input end and the output end through the first drive unit after the first drive unit obtains the voltage of the working power supply to reach the preset voltage and the time for obtaining the working power supply reaches the preset time.

3. The power management system according to claim 2, wherein the first switching unit includes a first switching tube and a second switching tube connected in parallel, an input terminal of the first switching tube and an input terminal of the second switching tube are used together as an input terminal of the first switching unit, and an output terminal of the first switching tube and an output terminal of the second switching tube are used together as an output terminal of the first switching unit; the control end of the first switching tube and the control end of the second switching tube are connected with the first driving unit; the first driving unit is provided with a double driving pin and is used for driving the first switching tube and the second switching tube to be simultaneously turned on or off.

4. The power management system of claim 3, wherein the first drive unit comprises a hot plug controller, and the first switching tube and the second switching tube are both MOS tubes or are both triodes.

5. The power management system of claim 2, wherein the power management system comprises at least two of the first power management modules, and wherein at least two of the first power management modules each correspond to a different one of the operating power sources.

6. The power management system of claim 5, wherein the power management system comprises a second power management module in one-to-one correspondence with the work boards, the second power management module adjusting different power-up sequences of the work boards of different work power supplies.

7. The power management system of claim 6, wherein the second power management module comprises a second driving unit and a third switching tube, an input end of the third switching tube is connected with the first power management module, an output end of the third switching tube is connected with the working board card, a control end of the third switching tube is connected with the second driving unit, the second driving unit is further connected with the main control module, and the main control module is further used for driving the second driving unit to turn on or off the third switching tube.

8. The power management system of claim 7, wherein the second driving unit comprises a hot plug controller, and the third switching transistor is a MOS transistor or a triode.

9. The power management system of claim 6, wherein the second power management module comprises a power system management chip and a DCDC unit, an input of the DCDC unit is connected to the first power management module, an output of the DCDC unit is connected to the work board card, and the power system management chip drives the DCDC unit to be turned on or off.

10. The power management system of claim 6, further comprising a communication module, wherein the communication module comprises a first communication unit and a second communication unit, the second power management module can transmit the power information of the corresponding work board card to the main control module through the second communication unit after collecting the power information of the corresponding work board card, and the main control module can transmit the power information of the work board card to the server through the first communication unit.

11. The power management system of claim 5, further comprising a status indication module, the status indication module having different indication states, different ones of the indication states corresponding to different ones of the operating states of the operating power supply.

12. The power management system of claim 1, further comprising a temperature acquisition module for acquiring a temperature of a power path through which the power management board delivers the operating power and generating an alert signal when the acquired temperature is greater than a temperature threshold.