Power supply circuit and server

Abstract

The invention relates to the technical field of power electronics, and discloses a power supply circuit and a server, the power supply circuit is used for supplying power to a board card in the server, the power supply circuit comprises a rechargeable power supply and an intelligent management system, and the charging end of the rechargeable power supply is connected with the power supply output end of the server; the output end of the rechargeable power supply is connected with the first end of the intelligent management system; the second end of the intelligent management system is connected with the power supply output end of the server, and the first output end of the intelligent management system is connected with the power supply end of the equipment on the board card; when the server normally outputs the power supply voltage, the intelligent management system transmits the power supply voltage to the equipment on the board card and controls the power supply voltage to charge the rechargeable power supply; and when the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge so as to supply power to equipment on the board card. Dual power supply can be provided for the board card by using the server and the rechargeable power supply, the reliability and stability of power supply of the board card are improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronics, and in particular to a power supply circuit and a server. Background Art

[0002] The server crystal oscillator is usually powered by a button battery in the event of a power outage. However, the capacity of the button battery is relatively small and its battery life is limited. In the event of a long power outage, it may not be able to continuously provide a stable power supply to the crystal oscillator, thus affecting the accuracy and stability of the server's clock. Secondly, the button battery is not rechargeable and needs to be replaced regularly. Servers are usually deployed in key locations such as data centers, and there are a large number of them. When the button battery suddenly fails to supply power, the operator cannot find the power-off battery in time for replacement, which consumes a lot of manpower and time costs, thereby increasing maintenance costs. The server may also fail at a critical moment due to untimely replacement. In addition, the performance of the button battery will gradually decline over time, and changes in its voltage and capacity may have an adverse effect on the operation of the crystal oscillator. On-site personnel cannot obtain the battery's working information in advance, such as the remaining power, and cannot take preventive measures in advance, further increasing the risk of server failure. Summary of the invention

[0003] In view of this, the present invention provides a power supply circuit and a server to solve the problem of insufficient endurance of a crystal oscillator power supply circuit of a server power supply circuit.

[0004] In a first aspect, the present invention provides a power supply circuit for supplying power to a board inside a server, the power supply circuit comprising: a rechargeable power supply and an intelligent management system, wherein a charging end of the rechargeable power supply is connected to a power supply output end of the server, and an output end of the rechargeable power supply is connected to a first end of the intelligent management system; a second end of the intelligent management system is connected to a power supply output end of the server, and a first output end of the intelligent management system is connected to a power supply end of a device on the board; when the server outputs a power supply voltage normally, the intelligent management system transmits the power supply voltage to the device on the board, and controls the power supply voltage to charge the rechargeable power supply; when the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge to supply power to the device on the board.

[0005] The power supply circuit provided by the present invention can, on the one hand, enable the server board to be powered by the power supply voltage output by the server system, and on the other hand, when the server cannot output the power supply voltage, the board can also be powered by a rechargeable power supply, thereby providing stable power supply for the devices on the board when the server is powered off, solving the problem of low power supply reliability of the server board, reducing the cost of replacing the power supply and the maintenance of the power supply, and reducing the risk of power off of the board.

[0006] In an optional embodiment, the rechargeable power supply includes: a plurality of rechargeable batteries connected in parallel, wherein the input end of each rechargeable battery is connected to the power supply output end of the server, and the output end of each rechargeable battery is connected to the first end of the intelligent management system; when the server outputs the power supply voltage normally, the intelligent management system controls the power supply voltage to charge each rechargeable battery; when the server stops outputting the power supply voltage, the intelligent management system controls any rechargeable battery to discharge to power the device on the board; when any rechargeable battery fails, any remaining normal rechargeable battery powers the device on the board.

[0007] The power supply circuit provided by the present invention has multiple rechargeable batteries that provide redundant power supply for board devices to increase the total battery capacity and improve power supply stability; the batteries are connected in parallel to ensure that when one battery fails, any of the remaining batteries can continue to supply power to the devices on the board, thereby improving power supply reliability.

[0008] In an optional embodiment, the intelligent management system includes: a battery management circuit, a status detection circuit and an intelligent switching circuit, wherein the input end of the battery management circuit is connected to the output end of the rechargeable power supply, the output end of the battery management circuit is connected to the first end of the status detection circuit, and the battery management circuit is used to manage the charging and discharging process of the rechargeable power supply; the second end of the status detection circuit is connected to the first end of the intelligent switching circuit, the third end of the status detection circuit is wirelessly connected to the user terminal, and the status detection circuit is used to detect the working state of the rechargeable power supply and send the working state of the rechargeable power supply to the user terminal; the second end of the intelligent switching circuit is connected to the power supply output end of the server, and the third end of the intelligent switching circuit is connected to the power supply end of the device on the board; when the server outputs the power supply voltage normally, the intelligent switching circuit transmits the power supply voltage to the device on the board; when the server stops outputting the power supply voltage, the intelligent switching circuit switches the switch state so that the rechargeable power supply discharges to power the device on the board.

[0009] The power supply circuit provided by the present invention has a battery management circuit that is responsible for managing the charging and discharging process of the rechargeable power supply to ensure the safety and life of the power supply; the intelligent switching circuit can intelligently switch between rechargeable batteries or between the rechargeable power supply and the server power supply system according to the power supply status (such as remaining power, health status, etc.) obtained by the status monitoring device to ensure that the server board card obtains power supply continuously and stably, thereby realizing optimized management of the power supply of the server board card; the status detection circuit can monitor the parameters such as the power, voltage, and temperature of the rechargeable battery in real time.

[0010] In an optional embodiment, the intelligent switching circuit includes: a first switch circuit, a second switch circuit and a control unit, wherein the first end of the first switch circuit is connected to the power supply output end of the server, the second end of the first switch circuit is connected to the first end of the second switch circuit and the charging end of the rechargeable power supply, and the control end of the first switch circuit is connected to the first end of the control unit and then grounded; the second end of the second switch circuit is connected to the positive output end of the rechargeable power supply and the second end of the control unit, and the control end of the second switch circuit is connected to the third end of the control unit; the fourth end of the control unit is connected to the negative output end of the rechargeable power supply; when the control unit determines that the server normally outputs the power supply voltage, the control unit controls the first switch circuit to turn on and the second switch circuit to turn off, so that the power supply voltage is delivered to the device on the board; when the control unit determines that the server stops outputting the power supply voltage, the control unit controls the first switch circuit to turn off and the second switch circuit to turn on, so that the rechargeable power supply discharges to power the device on the board.

[0011] In an optional embodiment, the power supply circuit also includes: a charging circuit, wherein the input end of the charging circuit is connected to the power supply output end of the server, the output end of the charging circuit is connected to the input end of the rechargeable power supply, and the charging circuit is used to control the charging process of the rechargeable power supply.

[0012] In an optional embodiment, the charging circuit includes: a charging control unit, a current limiting unit and a first filtering unit, wherein the input end of the charging control unit is connected to the power supply output end of the server, the output end of the charging control unit is connected to the first end of the first filtering unit and the charging end of the rechargeable power supply, the communication end of the charging control unit is connected to the first end of the current limiting unit, and the charging control unit is used to control the charging process of the rechargeable power supply; the second end of the current limiting unit is connected to the external power supply, and the current limiting unit is used to limit the current size of the communication end of the control unit; the second end of the first filtering unit is grounded, and the first filtering unit is used to filter out interference at the charging end of the rechargeable power supply.

[0013] In an optional embodiment, the power supply circuit also includes: a battery management chip, wherein the first end of the battery management chip is connected to the third end of the intelligent management system, the second end of the battery management chip is wirelessly connected to the user terminal, and the third end of the battery management chip is connected to the communication end of the charging circuit, and the battery management chip is used to send the working status of the rechargeable power supply and the charging circuit to the user terminal.

[0014] The power supply circuit provided by the present invention uses a battery management chip to promptly send alarm information to terminals such as a server management system when the battery status is abnormal, so that management personnel can take preventive measures in a timely manner, thereby improving the battery management level and the overall stability of the server and reducing the risk of power failure of devices on the server board due to power failure.

[0015] In an optional embodiment, the status detection circuit includes: a monitoring chip and a second filtering unit, wherein the first end of the monitoring chip is connected to the first end of the battery management chip, the second end of the monitoring chip is connected to the power supply output end of the server, the third end of the monitoring chip is connected to the positive output end of the rechargeable power supply and the first end of the second filtering unit, the fourth end of the monitoring chip is connected to the negative output end of the rechargeable power supply and the second end of the second filtering unit and then grounded, the monitoring chip is used to obtain the working status of the rechargeable power supply and send the working status to the battery management chip; the second filtering unit is used to filter out interference at the third end of the monitoring chip.

[0016] In an optional implementation, when the working state of the rechargeable power source is abnormal, after the battery management chip allocates an IP address, the battery management chip sends an alarm message to the user terminal.

[0017] In a second aspect, the present invention provides a server, comprising: a server body, a board, a crystal oscillator and a power supply circuit according to the first aspect or any corresponding embodiment thereof, wherein the crystal oscillator is integrated on the board, and the board is arranged in the server body; a first output end of the intelligent management system is connected to a power supply end of the crystal oscillator on the board; when the server normally outputs a power supply voltage, the intelligent management system transmits the power supply voltage to the crystal oscillator on the board, and controls the power supply voltage to charge a rechargeable power supply; when the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge to power the crystal oscillator on the board.

[0018] In the server provided by the present invention, the server board can be powered by the power supply voltage output by the server system on the one hand, and on the other hand, when the server cannot output the power supply voltage, the board can also be powered by a rechargeable power supply, and can still provide stable power supply for the devices on the board when the server is powered off, thereby solving the problem of low power supply reliability of the server board, reducing the cost of replacing the power supply and the power supply maintenance, and reducing the risk of power off of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a composition diagram of a power supply circuit according to an embodiment of the present invention;

[0021] Figure 2 is another composition diagram of a power supply circuit according to an embodiment of the present invention;

[0022] Figure 3 is a specific circuit structure diagram of a rechargeable power supply according to an embodiment of the present invention;

[0023] Figure 4 is another composition diagram of a power supply circuit according to an embodiment of the present invention;

[0024] Figure 5 is a composition diagram of an intelligent switching circuit according to an embodiment of the present invention

[0025] Figure 6 is a specific circuit structure diagram of an intelligent switching circuit according to an embodiment of the present invention;

[0026] Figure 7 is another composition diagram of a power supply circuit according to an embodiment of the present invention;

[0027] Figure 8 is a specific circuit structure diagram of a charging circuit according to an embodiment of the present invention;

[0028] Fig. 9 is another composition diagram of a power supply circuit according to an embodiment of the present invention;

[0029] Fig.10 is a composition diagram of a state detection circuit according to an embodiment of the present invention;

[0030] Fig.11 is a specific circuit structure diagram of a state detection circuit according to an embodiment of the present invention;

[0031] Fig.12 is a composition diagram of a server according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] The crystal oscillator on the server board needs to ensure continuous power supply. In addition to using the server's power supply system to work, the crystal oscillator usually uses a button battery as a backup power source to continue working when the server is powered off. The traditional crystal oscillator power supply circuit has the following problems:

[0037] (1) Insufficient battery life: When the crystal oscillator is powered off for a long time, the button battery can only provide power for a short time and cannot continuously provide stable power to the crystal oscillator. This may cause the server to have problems such as inaccurate clock and abnormal system startup when power is restored due to the long power outage of the crystal oscillator.

[0038] (2) Non-rechargeable: Button batteries are non-rechargeable, which means that once they run out of power, they must be replaced. Servers are usually deployed in critical locations such as data centers, and there are a large number of them. Frequent replacement of button batteries not only requires a lot of manpower and time costs, but may also cause server failures due to untimely replacement.

[0039] (3) Unstable performance: The voltage and capacity of button batteries will gradually decrease over time, resulting in unstable power supply to the crystal oscillator, affecting the output frequency and clock accuracy of the crystal oscillator. The performance of button batteries is also easily affected by environmental factors such as temperature and humidity. In some extreme environments, the performance of button batteries may drop sharply, further affecting the stability of the server.

[0040] (4) Lack of intelligent management: In the existing technology, the power supply method of button batteries lacks intelligent management functions. Administrators cannot monitor the battery power, voltage and other status parameters in real time, nor can they dynamically adjust the power supply strategy according to the actual needs of the server. As a result, administrators cannot understand the status of the button batteries in a timely manner and cannot take preventive measures in advance, increasing the risk of server problems due to battery failure.

[0041] To this end, this embodiment provides a power supply circuit, which is used to supply power to the board card inside the server, such as Figure 1 As shown, the power supply circuit includes: a rechargeable power supply 1 and an intelligent management system 2.

[0042] Figure 1 In the embodiment, the charging end of the rechargeable power supply 1 is connected to the power supply output end of the server to receive the power supply voltage of the server, and the output end of the rechargeable power supply 1 is connected to the first end of the intelligent management system 2; the second end of the intelligent management system 2 is connected to the power supply output end of the server to receive the power supply voltage of the server, and the first output end of the intelligent management system 2 is connected to the power supply end of the device on the board.

[0043] Specifically, Figure 1 In the example, the intelligent management system 2 is used to monitor the output voltage of the server in real time, and according to the output status of the server, control the power supply output terminal of the server to be connected to the power supply terminal of the board, or control the output terminal of the rechargeable power supply 1 to be connected to the power supply terminal of the board. When the server outputs the power supply voltage normally, the intelligent management system 2 transmits the power supply voltage to the device on the board to power the device, and controls the power supply voltage to charge the rechargeable power supply 1; when the server stops outputting the power supply voltage, the intelligent management system 2 controls the rechargeable power supply 1 to discharge to power the device on the board.

[0044] Optionally, the rechargeable power supply 1 includes a plurality of lithium batteries that can be repeatedly charged and discharged, and the plurality of lithium batteries are connected in series, in parallel, or in series and in parallel. The intelligent management system 2 can identify the remaining power of each lithium battery and control one or more of the lithium batteries to charge or discharge.

[0045] The power supply circuit provided in this embodiment is such that the server board can be powered by the power supply voltage output by the server system on the one hand, and on the other hand, when the server cannot output the power supply voltage, the board can also be powered by a rechargeable power supply, and can still provide stable power supply to the devices on the board when the server is powered off, thereby solving the problem of low power supply reliability of the server board, reducing the cost of replacing the power supply and power supply maintenance, and reducing the risk of power off of the board.

[0046] In some optional embodiments, such as Figure 2 As shown, the rechargeable power supply 1 includes: a plurality of rechargeable batteries 11 connected in parallel, wherein the input end of each rechargeable battery 11 is connected to the power supply output end of the server, and the output end of each rechargeable battery 11 is connected to the first end of the intelligent management system 2.

[0047] Specifically, Figure 2 In the embodiment, the intelligent management system 2 can monitor the working status and remaining power of each rechargeable battery 11. When the server outputs the power supply voltage normally, the intelligent management system 2 controls the power supply voltage to charge each rechargeable battery 11; when the server stops outputting the power supply voltage, the intelligent management system 2 controls any rechargeable battery 11 with sufficient power to discharge to power the device on the board; when any one or more rechargeable batteries 11 fail, any other normal rechargeable battery 11 powers the device on the board.

[0048] Optionally, the rechargeable battery 11 may be a battery with advantages such as high energy density, light weight, and low self-discharge rate, such as a nickel-hydrogen battery, a lithium battery, etc., which has good charge and discharge performance and cycle life. Figure 3 As shown, two TPS25942LRVCRs can be connected in parallel, and two Schottky diodes can be reserved as backup.

[0049] Optionally, considering factors such as heat dissipation, space utilization, and stability, a suitable location is selected inside the server to install the rechargeable battery 11. A special battery box or a fixing bracket can be used to fix the rechargeable battery 11 to ensure that the rechargeable battery 11 will not loosen or shift during the operation of the server. When connecting the rechargeable battery 11 to the circuit of the server, high-quality wires and connectors should be used to ensure reliable connection and low resistance. At the same time, interference with other electronic components can be avoided by reasonably wiring the connection lines.

[0050] In some optional embodiments, such as Figure 4As shown, the intelligent management system 2 includes: a battery management circuit 21, a state detection circuit 22 and an intelligent switching circuit 23, wherein the input end of the battery management circuit 21 is connected to the output end of the rechargeable power supply 1, and the output end of the battery management circuit 21 is connected to the first end of the state detection circuit 22; the second end of the state detection circuit 22 is connected to the first end of the intelligent switching circuit 23, and the third end of the state detection circuit 22 is wirelessly connected to the user terminal; the second end of the intelligent switching circuit 23 is connected to the power supply output end of the server to receive the power supply voltage of the server, and the third end of the intelligent switching circuit 23 is connected to the power supply end of the device on the board.

[0051] Specifically, Figure 4 In the embodiment, the battery management circuit 21 is used to manage the charging and discharging process of the rechargeable power source 1, monitor the charging and discharging current of the rechargeable power source 1 in real time, and shut down the input and output of the battery in time when the battery in the rechargeable power source 1 has a fault such as overcharging or overdischarging, so as to ensure the safety and life of the battery. The state detection circuit 22 is used to detect the working state of the rechargeable power source 1, such as the remaining power, health status, temperature and other parameters, and send the working state of the rechargeable power source 1 to the user terminal, so that the operator can remotely view the state of the rechargeable power source 1.

[0052] Specifically, Figure 4 In the embodiment, when the server outputs the power supply voltage normally, the intelligent switching circuit 23 switches the switch state, so that the power supply voltage is transmitted to the device on the board through the intelligent switching circuit 23 to power the device; when the server stops outputting the power supply voltage, the intelligent switching circuit 23 switches the switch state, so that the rechargeable power supply 1 discharges, and the discharge voltage is sequentially transmitted to the device on the board through the battery management circuit 21, the state detection circuit 22, and the intelligent switching circuit 23 to power the device.

[0053] In some optional embodiments, such as Figure 5 As shown, the intelligent switching circuit 23 includes: a first switch circuit 231, a second switch circuit 232 and a control unit 233, wherein a first end of the first switch circuit 231 is connected to the power supply output end of the server to receive the power supply voltage of the server, a second end of the first switch circuit 231 is connected to a first end of the second switch circuit 232 and a charging end of the rechargeable power supply 1, a control end of the first switch circuit 231 is connected to a first end of the control unit 233 and then grounded; a second end of the second switch circuit 232 is connected to a positive output end of the rechargeable power supply 1 and a second end of the control unit 233, a control end of the second switch circuit 232 is connected to a third end of the control unit 233; and a fourth end of the control unit 233 is connected to a negative output end of the rechargeable power supply.

[0054] Figure 5When the control unit 233 determines that the server outputs the power supply voltage normally, the control unit 233 controls the first switch circuit 231 to be turned on and the second switch circuit 232 to be turned off, so that the power supply voltage is delivered to the device on the board; when the control unit 233 determines that the server stops outputting the power supply voltage, the control unit 233 controls the first switch circuit 231 to be turned off and the second switch circuit 232 to be turned on, so that the rechargeable power supply discharges to power the device on the board.

[0055] Optionally, the control logic of the intelligent switching circuit 23 should ensure that the server can be switched to the rechargeable power supply 1 for power supply in time when the power is cut off, and can automatically switch back to the server power supply system when the server is restored. The intelligent switching circuit 23 can realize switching control by monitoring the voltage or current of the server power supply, or a special power monitoring chip can be used to complete the switching control function. The intelligent switching circuit 23 can be implemented by relays, field effect transistors or dedicated power switching chips. Relays have the advantages of high reliability and fast switching speed, but they are large in size and high in power consumption; field effect transistors are small in size and low in power consumption, but the control circuit is relatively complex; dedicated power switching chips have the advantages of high integration and stable performance, but they are more expensive. Those skilled in the art can select appropriate switching elements according to actual conditions and design reasonable control circuits.

[0056] Alternatively, if Figure 6 As shown, the intelligent switching circuit 23 can select the LTC4412 chip, and its specific control principle will not be repeated here.

[0057] In some optional embodiments, such as Figure 7 As shown, the power supply circuit also includes: a charging circuit 3, wherein the input end of the charging circuit 3 is connected to the power supply output end of the server to receive the server power supply voltage, and the output end of the charging circuit 3 is connected to the input end of the rechargeable power supply 1, and the charging circuit 3 is used to control the charging process of the rechargeable power supply 1.

[0058] Specifically, Figure 7 In the embodiment, the charging circuit 3 has an overcurrent protection function to prevent excessive charging current from damaging the rechargeable power source 1 and the components in the charging circuit 3. The charging circuit 3 adopts a combination of constant current charging and constant voltage charging. In the initial charging stage, constant current charging is adopted to quickly increase the power of the rechargeable power source 1; when the voltage of the rechargeable power source 1 is close to the set value, it is switched to constant voltage charging to ensure that the battery is fully charged and will not be overcharged. At the same time, according to the characteristics and capacity of the battery, the charging current and charging voltage and other parameters are reasonably set to improve the charging efficiency and extend the battery life.

[0059] Specifically, Figure 7As shown, the charging circuit 3 includes: a charging control unit 31, a current limiting unit 32 and a first filtering unit 33, wherein the input end of the charging control unit 31 is connected to the power supply output end of the server to receive the server power supply voltage, the output end of the charging control unit 31 is connected to the first end of the first filtering unit 33 and the charging end of the rechargeable power source 1, the communication end of the charging control unit 31 is connected to the first end of the current limiting unit 32, and the charging control unit 31 is used to control the charging process of the rechargeable power source 1; the second end of the current limiting unit 32 is connected to the external power supply, the current limiting unit 32 is used to limit the current size of the communication end of the control unit 31, and the current limiting unit 32 is also used to pull up the communication end level of the charging control unit 31 based on the external power supply, thereby improving the communication capability of the charging control unit 31; the second end of the first filtering unit 33 is grounded, and the first filtering unit 33 is used to filter out interference at the charging end of the rechargeable power source 1.

[0060] Optionally, the charging control unit 31 has the ability to automatically adjust the output, and it can monitor the size of the server power supply voltage, thereby adjusting the size of the charging current and charging voltage input to the charging power supply 1. When the server power supply voltage gradually decreases, indicating a power supply system failure of the server, the charging control unit 31 can increase the size of the output current by reducing the resistance of the internal output resistor and other means, and quickly charge the rechargeable power supply 1 to ensure that the rechargeable power supply 1 has sufficient power, and can provide redundant power supply for the board when the server system is powered off; when the server power supply voltage is relatively stable, the charging control unit 31 buffers the rechargeable power supply 1 by reducing the output current, reducing the impact on the rechargeable power supply 1 and increasing the life of the rechargeable power supply.

[0061] Alternatively, if Figure 8 As shown, the charging circuit 3 can select the BQ24295 chip, and its specific control principle will not be repeated here.

[0062] In some optional embodiments, such as Fig. 9 As shown, the power supply circuit also includes: a battery management chip 4, wherein the first end of the battery management chip 4 is connected to the third end of the intelligent management system 2, the second end of the battery management chip 4 is wirelessly connected to the user terminal, and the third end of the battery management chip 4 is connected to the communication end of the charging circuit 3, and the battery management chip 4 is used to send the working status of the rechargeable power supply 1 and the charging circuit 3 to the user terminal.

[0063] Specifically, Fig. 9In the embodiment, when the charge of the rechargeable power source 1 is too low, the voltage is abnormal, or the temperature is too high, or the charging current, charging voltage, or charging temperature of the charging circuit is abnormal, after the battery management chip 4 assigns an IP address, the battery management chip 4 directly sends an alarm message to the user terminal through the IPV4 or IPV6 network. The alarm message can be sent to the administrator's mailbox, mobile phone, or other devices through the server's network interface so that the administrator can receive it in time and take corresponding measures, such as charging or replacing the battery in time. At the same time, the battery status information can also be displayed on the display screen of the server, which is convenient for the administrator to check at any time and respond to the overcharge, over-discharge, short circuit, and other faults of the rechargeable power source 1 in time, effectively preventing the damage of the rechargeable power source 1 and the occurrence of safety accidents, thereby improving the safety of the rechargeable power source 1.

[0064] In some optional embodiments, such as Fig.10 As shown, the state detection circuit 22 includes: a monitoring chip 221 and a second filtering unit 222, wherein a first end of the monitoring chip 221 is connected to a first end of the battery management chip 4, a second end of the monitoring chip 221 is connected to a first end of the intelligent switching circuit 23, and receives a power supply voltage of the server, a third end of the monitoring chip 221 receives a voltage at a positive output end of the rechargeable power source 1, a third end of the monitoring chip 221 is also connected to a first end of the second filtering unit 222, a fourth end of the monitoring chip 221 receives a voltage at a negative output end of the rechargeable power source 1, and a fourth end of the monitoring chip 221 is also connected to a second end of the second filtering unit 222 and then grounded.

[0065] Specifically, Fig.10 In the embodiment, the monitoring chip 221 is used to obtain the working state of the rechargeable power source 1 and send the working state to the battery management chip 4; the second filtering unit 222 is used to filter out the interference of the third terminal of the monitoring chip 221.

[0066] Alternatively, if Fig.11 As shown, the monitoring chip 221 can select the BQ27220 chip, and its specific control principle will not be repeated here.

[0067] This example provides a server such as Fig.12 As shown, it includes: a server body, a board, a crystal oscillator and a power supply circuit of the above embodiment or any corresponding implementation method thereof, wherein the crystal oscillator is integrated on the board, and the board is arranged in the server body; the first output end of the intelligent management system is connected to the power supply end of the crystal oscillator on the board; when the server outputs the power supply voltage normally, the intelligent management system transmits the power supply voltage to the crystal oscillator on the board, and controls the power supply voltage to charge the rechargeable power supply; when the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge to power the crystal oscillator on the board.

[0068] Optionally, the server in this embodiment can be applied to the following scenarios:

[0069] (1) Small network devices: such as routers and switches, ensure the accuracy of device clocks in the event of a power outage and maintain basic configuration information and operating status records.

[0070] (2) Embedded systems: Some embedded devices that require clock accuracy, such as controllers and sensor nodes in industrial control systems, can ensure that the system time synchronization is not destroyed when a power failure occurs.

[0071] (3) Medical equipment: Some medical equipment requires precise clock signals to record data and perform timing operations. Using this patented solution during a power outage can ensure the normal operation of the equipment and the accuracy of the data.

[0072] (4) Security monitoring system: Ensure that the clock of the monitoring equipment is accurate during a power outage so that there is a correct time reference when reviewing video and event records later.

[0073] In the server provided in this embodiment, the server board can be powered by the power supply voltage output by the server system on the one hand, and on the other hand, when the server cannot output the power supply voltage, the board can also be powered by a rechargeable power supply. When the server is powered off, it can still provide stable power supply for the devices on the board, thereby solving the problem of low power supply reliability of the server board, reducing the cost of replacing the power supply and power supply maintenance, and reducing the risk of power off of the board.

[0074] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A power supply circuit, characterized in that: It is used to power the board inside the server. The power supply circuit includes: a rechargeable power supply and an intelligent management system, wherein: The charging end of the rechargeable power source is connected to the power supply output end of the server, and the output end of the rechargeable power source is connected to the first end of the intelligent management system; The second end of the intelligent management system is connected to the power supply output end of the server, and the first output end of the intelligent management system is connected to the power supply end of the device on the board; When the server outputs the power supply voltage normally, the intelligent management system transmits the power supply voltage to the device on the board, and controls the power supply voltage to charge the rechargeable power source; When the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge to supply power to the device on the board.

2. The power supply circuit according to claim 1, characterized in that: The rechargeable power source comprises: a plurality of rechargeable batteries connected in parallel, wherein: The input end of each rechargeable battery is connected to the power supply output end of the server, and the output end of each rechargeable battery is connected to the first end of the intelligent management system; When the server outputs the power supply voltage normally, the intelligent management system controls the power supply voltage to charge each of the rechargeable batteries; When the server stops outputting the power supply voltage, the intelligent management system controls any of the rechargeable batteries to discharge to supply power to the device on the board; When any of the rechargeable batteries fails, any other normal rechargeable battery supplies power to the devices on the board.

3. The power supply circuit according to claim 1, characterized in that: The intelligent management system includes: a battery management circuit, a state detection circuit and an intelligent switching circuit, wherein: The input end of the battery management circuit is connected to the output end of the rechargeable power supply, the output end of the battery management circuit is connected to the first end of the state detection circuit, and the battery management circuit is used to manage the charging and discharging process of the rechargeable power supply; The second end of the state detection circuit is connected to the first end of the intelligent switching circuit, and the third end of the state detection circuit is wirelessly connected to the user terminal. The state detection circuit is used to detect the working state of the rechargeable power source and send the working state of the rechargeable power source to the user terminal; The second end of the intelligent switching circuit is connected to the power supply output end of the server, and the third end of the intelligent switching circuit is connected to the power supply end of the device on the board; When the server outputs the power supply voltage normally, the intelligent switching circuit transmits the power supply voltage to the device on the board; When the server stops outputting the power supply voltage, the intelligent switching circuit switches the switch state so that the rechargeable power supply discharges to supply power to the device on the board.

4. The power supply circuit according to claim 3, characterized in that: The intelligent switching circuit comprises: a first switch circuit, a second switch circuit and a control unit, wherein: The first end of the first switch circuit is connected to the power supply output end of the server, the second end of the first switch circuit is connected to the first end of the second switch circuit and the charging end of the rechargeable power supply, and the control end of the first switch circuit is connected to the first end of the control unit and then grounded; The second end of the second switch circuit is connected to the positive output end of the rechargeable power supply and the second end of the control unit, and the control end of the second switch circuit is connected to the third end of the control unit; The fourth terminal of the control unit is connected to the negative output terminal of the rechargeable power source; When the control unit determines that the server outputs the power supply voltage normally, the control unit controls the first switch circuit to be turned on and the second switch circuit to be turned off, so that the power supply voltage is delivered to the device on the board; When the control unit determines that the server stops outputting the power supply voltage, the control unit controls the first switch circuit to be turned off and the second switch circuit to be turned on, so that the rechargeable power supply discharges to supply power to the device on the board.

5. The power supply circuit according to claim 3, characterized in that: Also includes: Charging circuit, where The input end of the charging circuit is connected to the power supply output end of the server, the output end of the charging circuit is connected to the input end of the rechargeable power supply, and the charging circuit is used to control the charging process of the rechargeable power supply.

6. The power supply circuit according to claim 5, characterized in that: The charging circuit comprises: a charging control unit, a current limiting unit and a first filtering unit, wherein: The input end of the charging control unit is connected to the power supply output end of the server, the output end of the charging control unit is connected to the first end of the first filtering unit and the charging end of the rechargeable power supply, the communication end of the charging control unit is connected to the first end of the current limiting unit, and the charging control unit is used to control the charging process of the rechargeable power supply; The second end of the current limiting unit is connected to an external power source, and the current limiting unit is used to limit the current size of the communication end of the control unit; The second end of the first filter unit is grounded, and the first filter unit is used to filter out interference at the charging end of the rechargeable power source.

7. The power supply circuit according to claim 5, characterized in that: Also includes: Battery management chip, including: The first end of the battery management chip is connected to the third end of the intelligent management system, the second end of the battery management chip is wirelessly connected to the user terminal, and the third end of the battery management chip is connected to the communication end of the charging circuit. The battery management chip is used to send the working status of the rechargeable power supply and the charging circuit to the user terminal.

8. The power supply circuit according to claim 7, characterized in that: The state detection circuit includes: a monitoring chip and a second filtering unit, wherein: The first end of the monitoring chip is connected to the first end of the battery management chip, the second end of the monitoring chip is connected to the power supply output end of the server, the third end of the monitoring chip is connected to the positive output end of the rechargeable power supply and the first end of the second filtering unit, the fourth end of the monitoring chip is connected to the negative output end of the rechargeable power supply and the second end of the second filtering unit and then grounded, and the monitoring chip is used to obtain the working state of the rechargeable power supply and send the working state to the battery management chip; The second filtering unit is used to filter out interference at the third end of the monitoring chip.

9. The power supply circuit according to claim 7, characterized in that: When the working state of the rechargeable power source is abnormal, after the battery management chip allocates an IP address, the battery management chip sends an alarm message to the user terminal.

10. A server, characterized in that: include: A server body, a board, a crystal oscillator, and a power supply circuit as claimed in any one of claims 1 to 9, wherein: The crystal oscillator is integrated on the board, and the board is arranged in the server body; The first output terminal of the intelligent management system is connected to the power supply terminal of the crystal oscillator on the board; When the server outputs the power supply voltage normally, the intelligent management system transmits the power supply voltage to the crystal oscillator on the board, and controls the power supply voltage to charge the rechargeable power source; When the server stops outputting the power supply voltage, the intelligent management system controls the rechargeable power supply to discharge to supply power to the crystal oscillator on the board.

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