Hot plug system and control method thereof

Abstract

The invention discloses a hot plug system and a control method thereof. The hot plug system comprises a main power supply, a hot plug circuit, a load circuit and a charging and discharging battery, the discharging end of the charging and discharging battery is electrically connected with the electric quantity input end of the hot plug circuit, and the charging end of the charging and discharging battery is electrically connected with the electric quantity output end of the hot plug circuit; the hot plug circuit is electrically connected with the load circuit; the hot plug circuit is used for receiving an auxiliary electric signal of the charging and discharging battery and starting work; when the main power supply is electrically connected with the hot plug circuit, the hot plug circuit is used for receiving a main electric signal of the main power supply to supply power to the load circuit; the main electric signal is also received to charge the charge-discharge battery. According to the technical scheme, the charging and discharging battery can continuously supply power to the hot plug circuit, the defects of voltage fluctuation, time sequence imbalance, weak interference resistance and the like are overcome, and the stability of a hot plug system is improved; and meanwhile, the main power supply can supply power to the charge-discharge battery, so that the service life and reliability of the charge-discharge battery are ensured.

Description

Technical Field

[0001] This invention relates to the field of hot-swap technology, and more particularly to a hot-swap system and its control method. Background Technology

[0002] Hot-swap technology refers to the safe insertion and removal of modules, components, or peripherals while the system or equipment is powered on, allowing for replacement or maintenance without downtime. This technology significantly improves system availability, maintainability, and fault tolerance, and is widely used in key areas such as servers, communication base stations, industrial control systems, and medical equipment.

[0003] During hot-swapping, the core challenge lies in preventing the surge current and voltage spikes during insertion and removal from impacting the module and system bus. Therefore, precise control is achieved through a hot-swapping control circuit. This circuit typically integrates functions such as soft-start control, overcurrent / overvoltage protection, and status detection. Its reliable operation directly depends on a stable auxiliary power supply—the auxiliary power supply provides the operating voltage for core components such as the controller, drive unit, and sampling circuit within the control circuit, serving as the "power source" for the execution of control logic.

[0004] In most existing solutions, the auxiliary power supply draws power directly from the system's main power bus. However, during hot-swapping, the main power bus voltage is prone to drastic fluctuations due to sudden load changes: when a module is inserted, the main power supply is instantly connected to the load, and the bus voltage may drop sharply, causing the auxiliary power supply voltage to drop synchronously, triggering a control circuit reset or functional failure; when a module is removed, the main power supply and the module are quickly disconnected, and the auxiliary power supply may lose power before the control circuit completes its protection action, causing the power switching transistor to fail to turn off in time, and residual energy to cause arcing or overvoltage surges. Summary of the Invention

[0005] This invention provides a hot-swap system and its control method to solve the problem of unstable power supply to the hot-swap circuit during the hot-swap process in the prior art, which leads to fluctuations or even failure.

[0006] According to one aspect of the present invention, a hot-swappable system is provided, comprising: a main power supply, a hot-swappable circuit, a load circuit, and a rechargeable battery;

[0007] The discharge terminal of the rechargeable battery is electrically connected to the power input terminal of the hot-swappable circuit, and the charging terminal of the rechargeable battery is electrically connected to the power output terminal of the hot-swappable circuit; the hot-swappable circuit is electrically connected to the load circuit.

[0008] The hot-swappable circuit is used to receive auxiliary electrical signals from the charging and discharging battery and to start operation;

[0009] When the main power supply and the hot-swappable circuit are electrically connected, the hot-swappable circuit is used to receive the main power signal from the main power supply to power the load circuit; it is also used to receive the main power signal to charge the battery.

[0010] Optionally, the main power supply includes power pins and signal line pins; the length of the power pins is greater than the length of the signal line pins; the power pins are used to input main electrical signals to the hot-swap circuit; the signal line pins are used to input sensing signals to the hot-swap circuit.

[0011] When both the power supply pins and signal line pins are electrically connected to the hot-swappable circuit, the hot-swappable circuit is used to receive induction signals and main power signals to power the load circuit.

[0012] During the insertion of the hot-swappable circuit, when the signal line pins are not electrically connected to the hot-swappable circuit but the power supply pins are electrically connected to the hot-swappable circuit, the hot-swappable circuit is used to receive the main power signal and does not receive the induction signal.

[0013] During the removal process of the hot-swap circuit, when the signal line pins are not electrically connected to the hot-swap circuit but the power supply pins are electrically connected to the hot-swap circuit, the hot-swap circuit is used to receive the main power signal, does not receive the induction signal, and controls the main power supply to stop supplying power to the load circuit.

[0014] Optionally, the hot-swappable circuitry includes a power switch;

[0015] The power supply switch is installed on the connection loop between the main power supply and the load circuit. It is used to control the power supply switch to close when an induction signal is received, and to control the power supply switch to open when no induction signal is received.

[0016] Optionally, a discharge circuit may also be included;

[0017] The discharge circuit includes a discharge control terminal, a discharge terminal, and a ground terminal; the discharge control terminal is electrically connected to the hot-swappable circuit, and the discharge terminal is electrically connected to the main power supply through the hot-swappable circuit.

[0018] During the removal process of the hot-swap circuit, when the signal line pins are not electrically connected to the hot-swap circuit but the power supply pins are electrically connected to the hot-swap circuit, the hot-swap circuit is used to control the operation of the bleeder circuit when no sensing signal is received.

[0019] Optionally, a discharge control switch may also be included;

[0020] The discharge control switch is located between the charging / discharging battery and the power input terminal, and is electrically connected to both the charging / discharging battery and the power input terminal respectively. It is used to control the opening or closing of the connection circuit between the charging / discharging battery and the power input terminal.

[0021] Optionally, it may also include charge / discharge management circuitry;

[0022] The charge / discharge management circuit is located between the charge / discharge battery and the hot-swappable circuit, and is electrically connected to both the charge / discharge battery and the hot-swappable circuit, respectively, to manage the charging and discharging processes of the charge / discharge battery.

[0023] Optionally, the first voltage stabilizing chip and the second voltage stabilizing chip are further included;

[0024] The first voltage stabilizing chip is arranged between the charge-discharge management circuit and the power input end and is electrically connected with the charge-discharge management circuit and the power input end respectively.

[0025] The second voltage stabilizing chip is arranged between the charge-discharge management circuit and the power output end and is electrically connected with the charge-discharge management circuit and the power output end respectively.

[0026] According to another aspect of the present application, a control method of a hot plug system is provided, which is applied to the hot plug system.

[0027] The control method comprises:

[0028] receiving an auxiliary power signal of the charge-discharge battery and starting working;

[0029] when the main power source is electrically connected with the hot plug circuit, receiving a main power signal of the main power source to supply power to the load circuit and charge the charge-discharge battery.

[0030] Optionally, the main power source comprises a power source pin and a signal line pin; the length of the power source pin is greater than the length of the signal line pin.

[0031] when the main power source is electrically connected with the hot plug circuit, receiving a main power signal of the main power source to supply power to the load circuit, which comprises:

[0032] when the power source pin and the signal line pin are both electrically connected with the hot plug circuit, receiving the sensing signal and the main power signal to supply power to the load circuit.

[0033] in the process of plugging in the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power source pin is electrically connected with the hot plug circuit, receiving the main power signal and not receiving the sensing signal.

[0034] in the process of unplugging the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power source pin is electrically connected with the hot plug circuit, receiving the main power signal, not receiving the sensing signal and controlling the main power source to stop supplying power to the load circuit.

[0035] Optionally, the hot plug system further comprises a bleeder circuit.

[0036] The bleeder circuit comprises a bleeder control end, a bleeder end and a grounding end; the bleeder control end is electrically connected with the hot plug circuit and the bleeder end is electrically connected with the main power source through the hot plug circuit.

[0037] receiving the main power signal, not receiving the sensing signal and controlling the main power source to stop supplying power to the load circuit, which comprises:

[0038] Receive the main signal, do not receive the induction signal, control the main power supply to stop supplying power to the load circuit, control the discharge circuit to work.

[0039] The technical scheme of the present application sets the charge-discharge battery, electrically connects the discharge end of the charge-discharge battery with the power input end of the hot plug circuit, and electrically connects the charge end of the charge-discharge battery with the power output end of the hot plug circuit, so that the charge-discharge battery can continuously supply power to the hot plug circuit, overcoming defects such as voltage fluctuation, timing misalignment, weak anti-interference, etc., and improving the stability of the hot plug system; at the same time, when the hot plug circuit is electrically connected with the main power supply, the main power supply can also supply power to the charge-discharge battery, so that the activity of the charge-discharge battery is in the best state, ensuring the service life and reliability of the charge-discharge battery.

[0040] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0042] Figure 1 is a connection diagram of a first hot plug system according to an embodiment of the present application;

[0043] Figure 2 is a working diagram of a hot plug system according to an embodiment of the present application;

[0044] Figure 3 is a flowchart of a control method of a first hot plug system according to an embodiment of the present application;

[0045] Figure 4 is a flowchart of a control method of a second hot plug system according to an embodiment of the present application;

[0046] Figure 5 is a flowchart of a control method of a third hot plug system according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should belong to the scope of the present application.

[0048] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or device.

[0049] Figure 1 is a connection diagram of a first hot plug system provided according to an embodiment of the present application. As shown in Figure 1 , the hot plug system comprises:

[0050] a main power supply 1, a hot plug circuit 2, a load circuit 3, and a charge-discharge battery 4;

[0051] The discharge end of the charge-discharge battery 4 is electrically connected to the power input end of the hot plug circuit 2, and the charge end of the charge-discharge battery 4 is electrically connected to the power output end of the hot plug circuit 2; the hot plug circuit 2 is electrically connected to the load circuit 3;

[0052] The hot plug circuit 2 is configured to receive an auxiliary electric signal of the charge-discharge battery 4 and start working;

[0053] When the main power supply 1 is electrically connected to the hot plug circuit 2, the hot plug circuit 2 is configured to receive a main electric signal of the main power supply 1 to supply power to the load circuit 3, and is also configured to receive the main electric signal to charge the charge-discharge battery 4.

[0054] The hot plug circuit 2 can be used to avoid instantaneous inrush current and voltage peak during plugging and unplugging, and to stabilize the circuit. The hot plug circuit 2 can be arranged in a board card, and plugging and unplugging can be realized by using the board card, or can be in other forms.

[0055] The main power supply 1 can be used to supply power to the load circuit 3, the hot plug circuit 2 is electrically connected with the load circuit 3, the main power supply 1 is electrically connected with the load circuit 3 through insertion of the hot plug circuit 2, and the main power supply 1 is disconnected with the load circuit 3 through pulling out of the hot plug circuit 2.

[0056] The charge-discharge battery 4 can be used to supply power to the hot plug circuit 2. Since the hot plug circuit 2 plays a role in stabilizing the circuit, the hot plug circuit 2 includes a soft start control module, an overcurrent and overvoltage protection module, a state detection module and the like. The normal operation of the hot plug circuit 2 depends on the auxiliary power supply. Therefore, the charge-discharge battery 4 is arranged in the embodiment of the application. The discharge end of the charge-discharge battery 4 is electrically connected with the power input end of the hot plug circuit 2. The charge-discharge battery 4 can continuously output the auxiliary power signal to the hot plug circuit 2 to supply power to the hot plug circuit 2, so as to ensure the normal operation of each module in the hot plug circuit 2.

[0057] Specifically, Figure 2 is a working schematic diagram of a hot plug system according to the embodiment of the application, which is combined with Figure 1 and Figure 2 As shown in the figures, when the main power supply 1 is electrically connected with the hot plug circuit 2, it is illustrated that the board card 20 including the hot plug circuit 2 is inserted into the connector 10 where the main power supply 1 is located, so as to realize the electrical connection between the main power supply 1 and the hot plug circuit 2. At this time, the loop of the main power supply 1 and the load circuit 3 is connected, the main power supply 1 outputs the main power signal to the load circuit 3 to supply power to the load circuit 3. At the same time, the main power supply 1 can also be electrically connected with the power output end of the charge-discharge battery 4 through the hot plug circuit 2, so as to provide the main power signal to the charge-discharge battery 4 to charge it, and ensure that the charge-discharge battery 4 continuously supplies power to the hot plug circuit 2.

[0058] It can be understood that the auxiliary power supply in the prior art directly takes power from the bus of the main power supply 1. The disadvantage of this mode is that the bus voltage of the main power supply 1 will fluctuate sharply due to sudden change of load in the hot plug process, so as to cause power failure of the auxiliary power supply and failure of the modules in the hot plug circuit 2. In the embodiment of the application, the charge-discharge battery 4 is arranged, the discharge end of the charge-discharge battery 4 is electrically connected with the power input end of the hot plug circuit 2, and the charging end of the charge-discharge battery 4 is electrically connected with the power output end of the hot plug circuit 2, so that the charge-discharge battery 4 can continuously supply power to the hot plug circuit 2. At the same time, when the hot plug circuit 2 is electrically connected with the main power supply 1, the main power supply 1 can also supply power to the charge-discharge battery 4, so as to ensure the continuous operation of the charge-discharge battery 4, overcome the defects of voltage fluctuation, time sequence misalignment, weak anti-interference and the like, and improve the stability of the hot plug system. Compared with the prior art, the technical scheme of the embodiment of the application decouples the auxiliary power supply from the main power supply 1, so that the voltage range of the main power supply 1 is wide, can support 48V, 400V, 800V and higher voltage in the future, and can support hot plug of higher voltage in the future.

[0059] The technical scheme of the embodiment of the application is characterized in that a charge-discharge battery is arranged, a discharge end of the charge-discharge battery is electrically connected with an electric quantity input end of the hot plug circuit, and a charge end of the charge-discharge battery is electrically connected with an electric quantity output end of the hot plug circuit, so that the charge-discharge battery can continuously supply power to the hot plug circuit, and the defects of voltage fluctuation, time sequence misadjustment, weak anti-interference and the like are overcome, and the stability of the hot plug system is improved; meanwhile, when the hot plug circuit is electrically connected with the main power supply, the main power supply can also supply power to the charge-discharge battery, so that the activity of the charge-discharge battery is in the best state, and the service life and reliability of the charge-discharge battery are ensured.

[0060] Optionally, with reference to Figure 1 As shown in the figure, the main power supply 1 includes a power supply pin a and a signal line pin b; the length of the power supply pin a is greater than the length of the signal line pin b; the power supply pin a is used for inputting a main electric signal to the hot plug circuit 2; and the signal line pin b is used for inputting a sensing signal to the hot plug circuit 2.

[0061] When the power supply pin a and the signal line pin b are both electrically connected with the hot plug circuit 2, the hot plug circuit 2 is used for receiving the sensing signal and the main electric signal to supply power to the load circuit 3.

[0062] In the insertion process of the hot plug circuit 2, the signal line pin b is not electrically connected with the hot plug circuit 2 and the power supply pin a is electrically connected with the hot plug circuit 2, the hot plug circuit 2 is used for receiving the main electric signal and not receiving the sensing signal.

[0063] In the pulling-out process of the hot plug circuit 2, the signal line pin b is not electrically connected with the hot plug circuit 2 and the power supply pin a is electrically connected with the hot plug circuit 2, the hot plug circuit 2 is used for receiving the main electric signal, not receiving the sensing signal and controlling the main power supply 1 to stop supplying power to the load circuit 3.

[0064] In the insertion process of the hot plug circuit 2, the signal line pin b is not electrically connected with the hot plug circuit 2 and the power supply pin a is electrically connected with the hot plug circuit 2, the hot plug circuit 2 is used for receiving the main electric signal and not receiving the sensing signal.

[0065] Specifically, during the insertion of the hot-swappable circuit 2, it is first electrically connected to the power supply pin a. At this time, the power supply pin a is electrically connected to the hot-swappable circuit 2, while the signal line pin b is not electrically connected to the hot-swappable circuit 2. The hot-swappable circuit 2 can only receive the main power signal. At this time, the main power supply 1 starts soft-starting and does not control the main power supply 1 to supply power to the load circuit 3. After the hot-swappable circuit 2 is fully inserted, both the power supply pin a and the signal line pin b are electrically connected to the hot-swappable circuit 2. At this time, the hot-swappable circuit 2 receives the induction signal and conducts the loop between the main power supply 1 and the load circuit 3, thereby enabling the main power supply 1 to supply power to the load circuit 3 normally. During the removal of the hot-swappable circuit 2, the signal line pin b is first disconnected from the hot-swappable circuit 2. At this time, the hot-swappable circuit 2 stops receiving the induction signal and controls the main power supply 1 to stop supplying power to the load circuit 3.

[0066] The technical solution of this invention, by setting power supply pins and signal line pins of different lengths in the main power supply, enables the power supply state of the load circuit to be controlled according to the received induction signal during the insertion and removal of the hot-swappable circuit, effectively solving problems such as surge current and voltage spikes, and improving the stability of the hot-swappable system.

[0067] Optionally, the hot-swappable circuitry includes a power switch; Figure 1 (Power switch not shown)

[0068] The power supply switch is installed on the connection loop between the main power supply and the load circuit. It is used to control the power supply switch to close when an induction signal is received, and to control the power supply switch to open when no induction signal is received.

[0069] The power supply switch is located on the connection loop between the main power supply and the load circuit. The hot-swap circuit controls the power supply switch to close by receiving an induction signal, thereby connecting the main power supply and the load circuit. When no induction signal is received, the power supply switch is controlled to open, shutting off the loop between the main power supply and the load circuit.

[0070] Specifically, after the hot-swap circuit is fully inserted, both the power supply pin and the signal line pin are electrically connected to the hot-swap circuit. At this time, the hot-swap circuit receives the induction signal and closes the power supply switch, thus connecting the main power supply and the load circuit, allowing the main power supply to normally supply power to the load circuit. During the process of removing the hot-swap circuit, the signal line pin is first disconnected from the hot-swap circuit. At this time, the hot-swap circuit stops receiving the induction signal and turns off the power supply switch, controlling the main power supply to stop supplying power to the load circuit.

[0071] The technical solution of this invention, by setting a power supply switch and controlling the conduction and cutoff of the power supply switch according to the received induction signal, effectively solves problems such as surge current and voltage spikes, and improves the stability of the hot-swap system.

[0072] Optional, continue to refer toFigure 1 as shown, further comprising a discharge circuit 4;

[0073] The discharge circuit 4 comprises a discharge control end, a discharge end and a ground end; the discharge control end is electrically connected with the hot plug circuit 2, and the discharge end is electrically connected with the main power supply 1 through the hot plug circuit 2;

[0074] In the process of pulling out the hot plug circuit 2, when the signal line pin b is not electrically connected with the hot plug circuit 2 and the power supply pin a is electrically connected with the hot plug circuit 2, the hot plug circuit 2 is used to control the discharge circuit 4 to work when no induction signal is received.

[0075] The discharge circuit 4 can be used to control the discharge rate of the main power supply 1. The discharge control end is electrically connected with the hot plug circuit 2, and the hot plug circuit 2 can control the working state of the discharge circuit 4 through the discharge control end. The discharge end is electrically connected with the main power supply 1 through the hot plug circuit 2, and is used to receive the main electric signal of the main power supply 1.

[0076] Specifically, in the process of pulling out the hot plug circuit 2, first, the signal line pin b is disconnected with the hot plug circuit 2, at this time the hot plug circuit 2 stops receiving the induction signal, controls the main power supply 1 to stop supplying power to the load circuit 3, and also controls the discharge circuit 4 to start working, so as to ensure that there is no residual electric signal in the hot plug circuit 2, and to avoid the phenomenon of sparking in the instant of pulling out.

[0077] The technical scheme of the embodiment of the application, by setting the discharge circuit, controls the discharge circuit to start working when the hot plug circuit stops receiving the induction signal, ensures that there is no residual electric signal in the hot plug circuit, avoids the phenomenon of sparking in the instant of pulling out, and improves the stability of the hot plug system.

[0078] Optionally, continuing to refer to Figure 1 as shown, further comprising a discharge control switch 5;

[0079] The discharge control switch 5 is arranged between the charge-discharge battery 4 and the electric quantity input end, and is electrically connected with the charge-discharge battery 4 and the electric quantity input end respectively, and is used to control the conduction or shutdown of the connection loop between the charge-discharge battery 4 and the electric quantity input end.

[0080] The discharge control switch 5 can be operated artificially, and the discharge control switch 5 is arranged between the charge-discharge management circuit and the electric quantity input end, and is electrically connected with the charge-discharge battery 4 and the electric quantity input end respectively, and can control the conduction and shutdown of the loop between the charge-discharge battery 4 and the hot plug circuit 2.

[0081] For example, when the hot plug circuit 2 is not electrically connected with the main power supply 1 for a long time, the continuous power supply of the charge-discharge battery 4 without charging will cause the charge-discharge battery 4 to run out of power, and affect the activity of the charge-discharge battery 4. Therefore, the discharge control switch 5 is arranged in series between the charge-discharge battery 4 and the power input end, so that when the hot plug circuit 2 is not electrically connected with the main power supply 1 for a long time, the discharge control switch 5 can be manually turned off, thereby ensuring the service life and reliability of the charge-discharge battery 4.

[0082] Optionally, continuing to refer to Figure 1 As shown in the figure, the hot plug system further comprises a charge-discharge management circuit 6;

[0083] The charge-discharge management circuit 6 is arranged between the charge-discharge battery 4 and the hot plug circuit 2, and is electrically connected with the charge-discharge battery 4 and the hot plug circuit 2 respectively, and is used for managing the charging process and the discharging process of the charge-discharge battery 4.

[0084] The charge-discharge management circuit 6 is used for managing the charging process and the discharging process of the charge-discharge battery 4, and can receive the auxiliary electric signal of the charge-discharge battery 4 and input the auxiliary electric signal into the hot plug circuit 2 after adaptive adjustment; and simultaneously receives the main electric signal and inputs the main electric signal into the charge-discharge battery 4 after adaptive adjustment, so as to charge the charge-discharge battery 4 and ensure the stability and reliability of the hot plug system.

[0085] Optionally, continuing to refer to Figure 1 As shown in the figure, the hot plug system further comprises a first voltage stabilizing chip 71 and a second voltage stabilizing chip 72;

[0086] The first voltage stabilizing chip 71 is arranged between the charge-discharge management circuit 6 and the power input end, and is electrically connected with the charge-discharge management circuit 6 and the power input end respectively;

[0087] The second voltage stabilizing chip 72 is arranged between the charge-discharge management circuit 6 and the power output end, and is electrically connected with the charge-discharge management circuit 6 and the power output end respectively.

[0088] The first voltage stabilizing chip 71 and the second voltage stabilizing chip 72 can both provide stable voltage. The first voltage stabilizing chip 71 is electrically connected with the charge-discharge management circuit 6 and the power input end respectively, and the second voltage stabilizing chip 72 is electrically connected with the charge-discharge management circuit 6 and the power output end respectively, thereby protecting the discharging process and the charging process of the charge-discharge battery 4 and ensuring the stability and reliability of the hot plug system.

[0089] Based on the same inventive concept, Figure 3 is a flow chart of a first control method of a hot plug system according to an embodiment of the present application, which is combined with Figure 1 and Figure 3 As shown in the figure, the present embodiment of the present application provides a control method of a hot plug system, which is applied to the hot plug system;

[0090] The control method comprises:

[0091] S10, receiving an auxiliary power signal of the charge-discharge battery and starting working.

[0092] S11, when the main power supply and the hot plug circuit are electrically connected, receiving a main power signal of the main power supply 1 to supply power to the load circuit and receiving the main power signal to charge the charge-discharge battery.

[0093] Specifically, the hot plug circuit 2 receives an auxiliary power signal of the charge-discharge battery 4 and starts working; the main power supply 1 is electrically connected with the hot plug circuit 2, at this time, the loop of the main power supply 1 and the load circuit 3 is connected, and the main power supply 1 outputs a main power signal to the load circuit 3 to supply power to the load circuit 3. At the same time, the main power supply 1 can also be electrically connected with the charge-discharge battery 4 through the hot plug circuit 2, and provide a main power signal to the charge-discharge battery 4 to charge it, so as to ensure that the charge-discharge battery 4 continuously supplies power to the hot plug circuit 2.

[0094] The technical scheme of the embodiment of the present application can continuously supply power to the hot plug circuit through the charge-discharge battery, overcome the defects of voltage fluctuation, time sequence misalignment, weak anti-interference, etc., and improve the stability of the hot plug system; at the same time, when the hot plug circuit and the main power supply are electrically connected, the main power supply can also supply power to the charge-discharge battery, so that the activity of the charge-discharge battery is in the best state, and the service life and reliability of the charge-discharge battery are ensured.

[0095] On the basis of the above-mentioned embodiment, Figure 4 is a flow chart of a second control method of a hot plug system according to the embodiment of the present application, which is combined with Figure 1 and Figure 4 It is shown that the main power supply 1 comprises a power supply pin a and a signal line pin b; the length of the power supply pin a is greater than the length of the signal line pin b. The control method comprises:

[0096] S20, receiving an auxiliary power signal of the charge-discharge battery and starting working.

[0097] S21, when the power supply pin and the signal line pin are both electrically connected with the hot plug circuit, receiving an induction signal and a main power signal to supply power to the load circuit and receiving the main power signal to charge the charge-discharge battery.

[0098] Among them, after the hot plug circuit 2 is completely inserted, the power supply pin a and the signal line pin b are both electrically connected with the hot plug circuit 2, at this time, the hot plug circuit 2 receives the induction signal and turns on the loop between the main power supply 1 and the load circuit 3, so as to make the main power supply 1 normally supply power to the load circuit 3.

[0099] S22, during the insertion process of the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, receiving the main power signal and not receiving the induction signal.

[0100] In the insertion process of the hot plug circuit 2, first, the power pin a is electrically connected, at this time, the power pin a is electrically connected with the hot plug circuit 2, the signal line pin b is not electrically connected with the hot plug circuit 2, the hot plug circuit 2 can only receive the main electric signal, at this time, the main power supply 1 starts soft start, and the main power supply 1 does not control the power supply to the load circuit 3.

[0101] S23, in the process of pulling out the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power pin is electrically connected with the hot plug circuit, the main electric signal is received, the induction signal is not received, and the main power supply stops supplying power to the load circuit.

[0102] In the insertion process of the hot plug circuit 2, first, the signal line pin b is disconnected with the hot plug circuit 2, at this time, the hot plug circuit 2 stops receiving the induction signal, and controls the main power supply 1 to stop supplying power to the load circuit 3.

[0103] The technical scheme of the embodiment of the application combines the power pins and the signal line pins with different lengths, so that the power supply state of the load circuit 3 is controlled according to the received induction signal in the insertion and pulling-out process of the hot plug circuit, the problems of inrush current and voltage peak are effectively solved, and the stability of the hot plug system is improved.

[0104] On the basis of the above embodiment, Figure 5 is a flow chart of a third control method of a hot plug system provided by the embodiment of the application, which combines Figure 1 and Figure 5 As shown in the figures, the main power supply 1 includes a power pin a and a signal line pin b; the length of the power pin a is greater than that of the signal line pin b. The hot plug system further includes a discharge circuit 4; the discharge circuit 4 includes a discharge control end, a discharge end and a ground end; the discharge control end is electrically connected with the hot plug circuit 2, and the discharge end is electrically connected with the main power supply 1 through the hot plug circuit 2. The control method includes:

[0105] S30, receiving the auxiliary electric signal of the charge-discharge battery and starting work.

[0106] S31, when the power pin and the signal line pin are both electrically connected with the hot plug circuit, receiving the induction signal and the main electric signal to supply power to the load circuit and receiving the main electric signal to charge the charge-discharge battery.

[0107] S32, in the insertion process of the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power pin is electrically connected with the hot plug circuit, the main electric signal is received, and the induction signal is not received.

[0108] S33, in the process of pulling out the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power pin is electrically connected with the hot plug circuit, the main signal is received, the induction signal is not received, the main power supply is controlled to stop supplying power to the load circuit, and the bleeding circuit is controlled to work.

[0109] Specifically, in the process of pulling out the hot plug circuit 2, first, the signal line pin b is disconnected with the hot plug circuit 2, at this time, the hot plug circuit 2 stops receiving the induction signal, controls the main power supply 1 to stop supplying power to the load circuit 3, and controls the bleeding circuit 4 to work, so as to ensure that there is no residual electric signal in the hot plug circuit 2 and avoid the phenomenon of sparking in the instant of pulling out.

[0110] The technical scheme of the embodiment of the present application controls the bleeding circuit to work when the hot plug circuit stops receiving the induction signal, ensures that there is no residual electric signal in the hot plug circuit, avoids the phenomenon of sparking in the instant of pulling out, and improves the stability of the hot plug system.

[0111] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical scheme of the present application can be achieved, which is not limited herein.

[0112] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A hot plug system, characterized by, The application relates to a power supply device, which comprises a main power supply, a hot plug circuit, a load circuit and a charge-discharge battery. The discharge end of the charge-discharge battery is electrically connected with the electric quantity input end of the hot plug circuit, the charge end of the charge-discharge battery is electrically connected with the electric quantity output end of the hot plug circuit, the hot plug circuit is electrically connected with the load circuit. The hot plug circuit is used for receiving an auxiliary electric signal of the charge-discharge battery and starting work. When the main power supply is electrically connected with the hot plug circuit, the hot plug circuit is used for receiving a main electric signal of the main power supply to supply power to the load circuit, and is also used for receiving the main electric signal to charge the charge-discharge battery. The main power supply comprises a power supply pin and a signal line pin, the length of the power supply pin is greater than the length of the signal line pin, the power supply pin is used for inputting the main electric signal to the hot plug circuit, and the signal line pin is used for inputting a sensing signal to the hot plug circuit.

2. The hot plug system of claim 1, wherein, When the power supply pin and the signal line pin are both electrically connected with the hot plug circuit, the hot plug circuit is used for receiving the sensing signal and the main electric signal to supply power to the load circuit. In the process of plugging in the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, the hot plug circuit is used for receiving the main electric signal and not receiving the sensing signal. In the process of unplugging the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, the hot plug circuit is used for receiving the main electric signal, not receiving the sensing signal and controlling the main power supply to stop supplying power to the load circuit. The hot plug circuit comprises a power supply switch.

3. The hot plug system of claim 2, wherein, The power supply switch is arranged on a connection loop of the main power supply and the load circuit, is used for controlling the power supply switch to be closed when the sensing signal is received, and is used for controlling the power supply switch to be opened when the sensing signal is not received. The application further comprises a bleeder circuit.

4. The hot plug system of claim 2, wherein, The bleeder circuit comprises a bleeder control end, a bleeder end and a grounding end, the bleeder control end is electrically connected with the hot plug circuit, and the bleeder end is electrically connected with the main power supply through the hot plug circuit. In the process of unplugging the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, the hot plug circuit is used for controlling the bleeder circuit to work when the sensing signal is not received. The application further comprises a discharge control switch.

5. The hot plug system of claim 1, wherein, The discharge control switch is arranged between the charge-discharge battery and the electric quantity input end, is electrically connected with the charge-discharge battery and the electric quantity input end respectively, and is used for controlling the connection loop between the charge-discharge battery and the electric quantity input end to be conducted or turned off. The application further comprises a charge-discharge management circuit.

6. The hot plug system of claim 1, wherein, The charge-discharge management circuit is arranged between the charge-discharge battery and the hot plug circuit, is electrically connected with the charge-discharge battery and the hot plug circuit respectively, and is used for managing the charging process and the discharging process of the charge-discharge battery. The application further comprises a first voltage stabilizing chip and a second voltage stabilizing chip.

7. The hot plug system of claim 6, wherein, ​ The first voltage stabilizing chip is arranged between the charge-discharge management circuit and the power input end and is electrically connected with the charge-discharge management circuit and the power input end respectively. The second voltage stabilizing chip is arranged between the charge-discharge management circuit and the power output end and is electrically connected with the charge-discharge management circuit and the power output end respectively.

8. A control method of a hot plug system, characterized by, The hot plug system is applied to any one of claims 1-7; The control method comprises: Receiving an auxiliary electric signal of the charge-discharge battery and starting working; When the main power supply is electrically connected with the hot plug circuit, receiving a main electric signal of the main power supply to supply power to the load circuit and receiving the main electric signal to charge the charge-discharge battery.

9. The control method according to claim 8, characterized by, The main power supply comprises a power supply pin and a signal line pin; the length of the power supply pin is greater than the length of the signal line pin; When the main power supply is electrically connected with the hot plug circuit, receiving a main electric signal of the main power supply to supply power to the load circuit, comprising: When the power supply pin and the signal line pin are both electrically connected with the hot plug circuit, receiving the sensing signal and the main electric signal to supply power to the load circuit; During the insertion process of the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, receiving the main electric signal and not receiving the sensing signal; During the extraction process of the hot plug circuit, when the signal line pin is not electrically connected with the hot plug circuit and the power supply pin is electrically connected with the hot plug circuit, receiving the main electric signal, not receiving the sensing signal and controlling the main power supply to stop supplying power to the load circuit.

10. The control method according to claim 9, characterized by The hot plug system further comprises a bleed circuit; The bleed circuit comprises a bleed control end, a bleed end and a ground end; the bleed control end is electrically connected with the hot plug circuit, and the bleed end is electrically connected with the main power supply through the hot plug circuit; Receiving the main electric signal, not receiving the sensing signal and controlling the main power supply to stop supplying power to the load circuit, comprising: Receiving the main electric signal, not receiving the sensing signal, controlling the main power supply to stop supplying power to the load circuit and controlling the bleed circuit to work.

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