Power supply system and control method

Abstract

The invention provides a power supply system and a control method, and the power supply system comprises a first circuit module which is connected with a first power supply and is used for transmitting a first voltage to a second circuit module, and the first voltage is determined based on the voltage inputted by the first power supply, electrical isolation exists between the first circuit module and the second circuit module; the second circuit module is connected with the first circuit module, obtains a second voltage when the first circuit module is in a power-off state, and transmits the second voltage to a target circuit module, and the second voltage is determined based on a voltage input by a second power supply; and the target circuit module transmits a third voltage to the first circuit module based on the second voltage, so that the first circuit module operates based on the third voltage.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power supply, in particular to a power supply system and a control method. BACKGROUND

[0002] The power supply of a computer system includes a first circuit module connected to an input power grid and a second circuit module for powering a load. When the power grid is powered off or the first circuit module fails, the power supply inside is also powered off, causing the computer to shut down. The current solution includes powering the second circuit module of the power supply through a backup redundant power supply. However, this solution cannot make the system continue to obtain the state of the powered-off power supply and the first circuit module, resulting in the loss of system functions and a large security risk. SUMMARY

[0003] The present disclosure provides a power supply system and a control method to at least solve the above technical problems in the prior art.

[0004] According to a first aspect of the present disclosure, a power supply system is provided, comprising:

[0005] a first circuit module connected to a first power supply, for transmitting a first voltage to a second circuit module, the first voltage being determined based on the voltage input by the first power supply, and there being electrical isolation between the first circuit module and the second circuit module;

[0006] the second circuit module being connected to the first circuit module, for obtaining a second voltage when the first circuit module is in a powered-off state, and transmitting the second voltage to a target circuit module, the second voltage being determined based on the voltage input by a second power supply;

[0007] the target circuit module transmitting a third voltage to the first circuit module based on the second voltage, so that the first circuit module operates based on the third voltage.

[0008] In an implementation, the power supply system further comprises:

[0009] a first isolation module connected to the first circuit module and the second circuit module respectively, for transmitting a first voltage signal of the first circuit module to the second circuit module, the first voltage signal representing the operating state of the first power supply and the first circuit module, wherein if the first voltage signal is high, it represents that the first power supply and the first circuit module are in a powered-on state, and if the first voltage signal is low or high impedance, it represents that the first circuit module is in a powered-off state, the powered-off state being caused by a fault of the first power supply and / or the first circuit module resulting in the first voltage being 0V.

[0010] In an implementation, the second circuit module is configured to send a control signal to the target circuit module if the first circuit module is in a power-off state;

[0011] The target circuit module is configured to transmit a third voltage to the first circuit module according to the control signal, so that the first circuit module operates based on the third voltage.

[0012] In an implementation, the target circuit module comprises a first control module, a second isolation module, a first voltage conversion module, and a first feedback module, wherein the first control module is connected with the second isolation module and the first voltage conversion module respectively.

[0013] The first control module is configured to control the first voltage conversion module to convert the second voltage into the third voltage and transmit the third voltage to the first circuit module to power at least part of the first circuit module.

[0014] The first feedback module is configured to obtain a first feedback voltage transmitted by the first circuit module and transmit the first feedback voltage to the second isolation module, wherein the first feedback voltage is in proportional relationship with the third voltage.

[0015] The second isolation module is configured to transmit the first feedback voltage to the first control module.

[0016] The first control module is further configured to adjust a voltage conversion parameter of the first voltage conversion module based on the first feedback voltage, so that the first feedback voltage is equal to a preset voltage.

[0017] In an implementation, the target circuit module further comprises a first switch tube, wherein the first switch tube is connected with the first voltage conversion module and the first control module respectively.

[0018] The second isolation module is connected with the first control module and the first feedback module respectively.

[0019] In an implementation, the target circuit module comprises a circuit conversion module, a second voltage conversion module, a second control module, and a second feedback module.

[0020] The circuit conversion module is connected with the second voltage conversion module and is configured to convert positive and negative power of the second voltage conversion module.

[0021] The second control module is connected with the second voltage conversion module through the circuit conversion module and is configured to control the second voltage conversion module to convert the second voltage into the third voltage and transmit the third voltage to the first circuit module to power at least part of the first circuit module.

[0022] In an implementation, the second feedback module is configured to acquire a second feedback voltage transmitted by the first circuit module, and transmit the second feedback voltage to the first isolation module; wherein the second feedback voltage is in proportional relationship with the third voltage.

[0023] The first isolation module is further configured to transmit the second feedback voltage to the second control module.

[0024] The second control module is further configured to adjust a voltage conversion parameter of the second voltage conversion module based on the second feedback voltage, so that the second feedback voltage is equal to a preset voltage.

[0025] In an implementation, the first circuit module is further configured to, when it is monitored that the first power supply and the first circuit module are in a power supply state, control the first voltage to delay power supply to the second circuit module, and transmit a high-level first voltage signal to the first isolation module.

[0026] The first isolation module is further configured to transmit the high-level first voltage signal to the second circuit module.

[0027] The second circuit module is further configured to convert positive and negative power of the second voltage conversion module according to the high-level first voltage signal, and cut off the connection between the second voltage conversion module and the second control module.

[0028] In an implementation, the circuit conversion module comprises a first normally closed contact, a second normally closed contact, a first normally open contact and a second normally open contact, wherein a common end of the first normally closed contact and the first normally open contact is connected with a positive electrode of the second voltage conversion module, and a common end of the second normally closed contact and the second normally open contact is connected with a negative electrode of the second voltage conversion module.

[0029] When the first power supply and the first circuit module are in a power supply state, the first normally closed contact and the second normally closed contact are connected, so that the positive electrode of the second voltage conversion module is connected with the first rectifier filter module and the negative electrode is grounded.

[0030] When the first circuit module is in a power-off state, the first normally closed contact and the second normally closed contact are disconnected, and the first normally open contact and the second normally open contact are connected, so that the second control module is connected with the second voltage conversion module.

[0031] According to a second aspect of the present disclosure, a control method is provided, which is applied to a target circuit module of a power supply system, the power supply system further comprising a first circuit module and a second circuit module, and the method comprises:

[0032] monitoring a first voltage transmitted by the first circuit module to the second circuit module;

[0033] transmitting a third voltage to the first circuit module based on a second voltage when the first circuit module is in a power-off state, so that the first circuit module operates based on the third voltage;

[0034] The first circuit module and the second circuit module are electrically isolated, and the second voltage is a voltage input by the second circuit module to the target circuit module.

[0035] The power supply system and the control method of the present disclosure can transmit a third voltage from the second circuit module to the first circuit module through a target circuit module when the first circuit module is in a power-off state, so that the first circuit module can operate based on the third voltage. After the first circuit module operates again, some circuit state information of the first circuit module can be transmitted to the second circuit module, and then to the main controller, so that the main controller knows the state of the first circuit module for state adjustment.

[0036] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0038] In the drawings, the same or corresponding reference numerals refer to the same or corresponding parts.

[0039] Figure 1 Structure block of power supply system provided for the embodiment of the present disclosure Figure 1 ;

[0040] Figure 2 Detailed structure diagram of power supply system provided for the first embodiment of the present disclosure Figure 1 ;

[0041] Figure 3 Detailed structure diagram of power supply system provided for the first embodiment of the present disclosure Figure 2 ;

[0042] Figure 4 Detailed structure diagram of power supply system provided for the first embodiment of the present disclosure Figure 3 ;

[0043] Figure 5Structure block of power supply system provided by the embodiment of the present disclosure Figure 2 ;

[0044] Figure 6 Structure block of power supply system provided by the embodiment of the present disclosure Figure 3 ;

[0045] Figure 7 Detailed structure diagram of power supply system provided by the first embodiment of the present disclosure Figure 4 ;

[0046] Figure 8 Detailed structure diagram of power supply system provided by the first embodiment of the present disclosure Figure 5 ;

[0047] Figure 9 Detailed structure diagram of power supply system provided by the second embodiment of the present disclosure Figure 1 ;

[0048] Figure 10 Detailed structure diagram of power supply system provided by the second embodiment of the present disclosure Figure 2 ;

[0049] Figure 11 Detailed structure diagram of power supply system provided by the second embodiment of the present disclosure Figure 3 ;

[0050] Figure 12 Detailed structure diagram of power supply system provided by the second embodiment of the present disclosure Figure 4 ;

[0051] Figure 13 Detailed structure diagram of power supply system provided by the second embodiment of the present disclosure Figure 5 ;

[0052] Figure 14 Structure diagram of target circuit module in the second embodiment of the present disclosure Figure 1 ;

[0053] Figure 15 Structure diagram of target circuit module in the second embodiment of the present disclosure Figure 2 .

[0054] Reference signs:

[0055] 11, first power supply; 12, second power supply;

[0056] 20, first circuit module; 21, correction module; 22, input detection module; 23, first controller; 24, first power supply module; 25, second rectification and filtering module;

[0057] 30, second circuit module; 31, third rectification filter module; 32, first rectification filter module; 33, second power supply module; 34, second controller; 35, fan;

[0058] 40, target circuit module; 41, first processing module; 42, second isolation module; 43, first voltage conversion module; 44, first switch tube; 45, first feedback module; 46, circuit conversion module; 461, first normally closed contact; 462, second normally closed contact; 463, first normally open contact; 464, second normally open contact; 465, conversion driving circuit; 47, second processing module; 48, second feedback module; 49, second switch tube;

[0059] 50, first isolation module;

[0060] 61, third voltage conversion module; 62, second voltage conversion module;

[0061] 70, main controller. DETAILED DESCRIPTION

[0062] To make the objectives, characteristics and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0063] The embodiments of the present disclosure provide a power supply system, Figure 1 The structure of the power supply system provided by the embodiments of the present disclosure is shown in Figure 1 . As shown in Figure 2 , the power supply system comprises:

[0064] The first circuit module 20 is connected with the first power supply 11, and is used to transmit a first voltage to the second circuit module 30. The first voltage is determined based on the voltage input by the first power supply 11. There is electrical isolation between the first circuit module 20 and the second circuit module 30.

[0065] The second circuit module 30 is connected with the first circuit module 20. When the first circuit module 20 is in a power-off state, the second circuit module 30 acquires a second voltage and transmits the second voltage to the target circuit module 40. The second voltage is determined based on the voltage input by the second power supply 12.

[0066] The target circuit module 40 transmits a third voltage to the first circuit module 20 based on the second voltage, so that the first circuit module 20 operates based on the third voltage.

[0067] Figure 1Detailed structure diagram of power supply system provided by embodiment one of the present disclosure Figure 2 .

[0068] As shown in Figure 2 , the entire power supply system is divided into two parts by dashed line A-A', the upper and lower parts of dashed line A-A' are both power supply units (PSU), among them, the upper part of dashed line A-A' is first power supply unit PSU1, and the lower part is second power supply unit PSU2. PSU2 is the standby power supply of PSU1, which can provide power supply for the second circuit module 30 of PSU1 when the first circuit module 20 of PSU1 is in power-off state, so that the second circuit module 30 can normally operate.

[0069] Figure 2 Dashed line B-B' in divides the entire power supply system into primary side and secondary side. When the first power supply 11 and the first circuit module 20 are in power-on state, the first circuit module 20 on the left side of dashed line B-B' is the primary side, and the second circuit module 30 on the right side of dashed line B-B' is the secondary side; when the first circuit module 20 is in power-off state, the target circuit module 40 on the right side of dashed line B-B' becomes the primary side, and the first circuit module 20 on the left side of dashed line B-B' becomes the secondary side, so that the first circuit module 20 is powered by the target circuit module 40; the transformation module and the isolation module are connected between the primary side and the secondary side.

[0070] As shown in Figure 3 , the first circuit module 20 includes a correction module 21, an input detection module 22, a first controller 23, a first power supply module 24 and a second rectification filter module 25. Among them, the correction module 21 can be a PFC (Power Factor Correction) circuit, the first controller 23 can include a DSP (Digital Signal Processing) chip or an MCU (Micro Controller Unit) chip, and the first power supply module 24 provides power supply voltage for other load modules of the first circuit module 20.

[0071] The second circuit module 30 includes a third rectification filter module 31, a first rectification filter module 32, a second power supply module 33, a second controller 34 and a fan 35. Among them, the second controller 34 can include a DSP chip or an MCU chip, and the second power supply module 33 provides power supply voltage for other load modules of the second circuit module 30, and also provides power supply voltage for the first isolation module 50 connected between the primary side and the secondary side.

[0072] Figure 2 Detailed structure diagram of power supply system provided by embodiment one of the present disclosureFigure 3 , Figure 3 The working flow of the power supply system when the first power supply and the first circuit module are in the power supply state is shown.

[0073] As shown in Figure 4 , when the first power supply 11 and the first circuit module 20 are in the power supply state, the first power supply 11 can provide 220Vac alternating voltage, which enters the first circuit module 20 and then enters the input detection module 22. The input detection module 22 detects the voltage input by the first power supply 11 to determine whether the first power supply 11 is operating normally. At the same time, the input detection module 22 also detects whether the Bulk voltage of the first circuit module 20 is normal, whether the PFC circuit is operating normally, the temperature sensor data of the first circuit module 20, the voltage / current data of the related circuit, the FW (Firmware, firmware) version, and other circuit state information of the first circuit module 20, and transmits the detection results to the first controller 23. The first controller 23 transmits these information to the second controller 34 through the first isolation module 50, and the second controller 34 transmits the information to the main controller 70. The main controller 70 can timely obtain the circuit state information of the first circuit module 20. The main controller 70 is a BMC (Baseboard management controller, mainboard management controller) chip.

[0074] When the first power supply 11 and the first circuit module 20 are in the power supply state, the voltage input by the first power supply 11 can also pass through the correction module 21 and output as the first voltage V1, which can be 400Vdc direct current. The first voltage V1 passes through the third transformation module 61 and the third rectification and filtering module 31 and outputs as the first output voltage Vout1, which can be 12V direct current. Vout1 supplies the Vout power bus to provide voltage for the system. It needs to be explained that because the first voltage V1 is a direct current voltage, it needs to be converted into an alternating voltage to be converted and output to the second circuit module 30 by the third transformation module 61. The conversion of the direct current voltage into the alternating voltage is completed by the power device connected with the third transformation module 61. The power device includes a PWM (Pulse Width Modulation, pulse width modulation) chip and a switch tube, and the PWM chip is connected with the third transformation module 61 through the switch tube. The PWM chip can output a series of high-level and low-level alternating pulses. The high-level pulse makes the switch tube open, and the low-level pulse makes the switch tube close, so that the alternating opening and closing of the switch tube converts the direct current into alternating current.

[0075] In other embodiments, the PWM chip can be replaced with a chip that can adjust the frequency.

[0076] The first voltage V1 can also pass through the second voltage conversion module 62 and output as a fourth voltage V4 after passing through the first rectification and filtering module 32, and the fourth voltage V4 is input into the second power supply module 33 to enable the second power supply module 33 to provide a power supply voltage for each load module, for example, to provide a power supply voltage for the second controller 34, the fan 35 and the first isolation module 50 in the second circuit module 30. Figure 3

[0077] Meanwhile, the first voltage V1 also passes through the second voltage conversion module 62 and is output to the second rectification and filtering module 32, and is output to the first power supply module 24 after rectification and filtering, and the first power supply module 24 provides a power supply voltage for each load of the first circuit module 20.

[0078] In an embodiment, the third voltage conversion module 61 and the second voltage conversion module 62 can be transformers.

[0079] In an embodiment, the first circuit module 20 is also configured to obtain a third feedback voltage Vc transmitted by the second circuit module 30, and the third feedback voltage Vc is in a proportional relationship with the fourth voltage V4.

[0080] The first controller 23 is configured to adjust a voltage conversion parameter of the second voltage conversion module 62 based on the third feedback voltage Vc, so that the third feedback voltage Vc is equal to a first preset voltage.

[0081] Specifically, for example, the proportional relationship between the fourth voltage V4 and the third feedback voltage Vc is 5:1, that is, when the fourth voltage V4 is 12V, the third feedback voltage Vc is 2.4V. Assuming that the value of the fourth voltage V4 in the present disclosure is 12V, the first preset voltage is 2.4V. If the fourth voltage V4 is 11.5V, the third feedback voltage Vc is 2.3V, which is less than the first preset voltage, and therefore the voltage conversion parameter of the second voltage conversion module 62 needs to be adjusted. The voltage conversion parameter of the second voltage conversion module 62 can be adjusted by a power device connected thereto. The voltage value of the fourth voltage V4 can be adjusted by changing the width of the high level of the PWM chip in the power device. For example, as mentioned above, if the fourth voltage V4 is 11.5V, the third feedback voltage Vc is 2.3V, which is less than the first preset voltage, and therefore the fourth voltage V4 needs to be increased to increase the third feedback voltage Vc, and at this time the width of the high level of the PWM chip needs to be increased to increase the fourth voltage V4. Conversely, if the third feedback voltage Vc is greater than the first preset voltage, the width of the high level of the PWM chip is reduced to reduce the fourth voltage V4.

[0082] It should be noted that the first output voltage Vout1 also corresponds to a feedback loop for adjusting the size of the first output voltage Vout1, and the adjustment process is the same as that of the fourth voltage V4, which will not be described here.​

[0083] The above process describes the operation of the first circuit module 20 and the second circuit module 30 when the first power supply 11 and the first circuit module 20 are in a powered state.

[0084] Figure 4 Detailed structural diagram of the power supply system provided in Embodiment 1 of this disclosure Figure 4 , Figure 5 The diagram illustrates the workflow of the second circuit module 30 based on the second power supply 12 when the first circuit module 20 is in a power-off state.

[0085] like Figure 2 As shown, when the first circuit module 20 is in a power-off state, the second circuit module 30 acquires the second voltage V2, which is determined based on the voltage input from the second power supply 12.

[0086] Specifically, when the first circuit module 20 is powered off, the second power supply 12, acting as a backup power supply, also outputs a first voltage after passing through the correction module. This first voltage, after passing through the transformer module and rectification and filtering, is output as the second output voltage Vout2. The second output voltage Vout2 is supplied separately to the Vout power bus to provide voltage to the system, and based on Vout2, a second voltage V2 is provided to the second circuit module 30. The second voltage V2 is input to the second power supply module 33, enabling it to re-supply voltage to the various loads of the second circuit module 30, ensuring the normal operation of the second circuit module 30. Simultaneously, the second voltage V2 can also provide power to the fan 35.

[0087] However, because there is electrical isolation between the first circuit module 20 and the second circuit module 30 (i.e., the first isolation module 50 and the second voltage V2 can ensure the normal operation of the second circuit module 30, but cannot supply power to the first circuit module 20), the circuit status information of the first circuit module 20 cannot be transmitted to the second circuit module 30, resulting in the second circuit module 30 being in a blind state regarding the circuit status information of the first circuit module 20. The following are some problems that will occur when the first circuit module 20 is in a power-off state:

[0088] 1. When the power system is performing a firmware upgrade on the first controller of the first circuit module, if the first circuit module is in a power-off state, the first power supply module of the first circuit module will become 0V, the first controller will not be able to continue to work, and the firmware upgrade will not be able to continue. The main controller will report a firmware upgrade failure, resulting in the loss of system functions.

[0089] 2. A power outage event in the first circuit module cannot be transmitted from the first circuit module to the second circuit module and then to the main controller. Currently, when a power outage or other fault in the first circuit module causes the first controller of the first circuit module to malfunction due to loss of power, the second circuit module is assumed not to receive information from the first circuit module, and the main controller uniformly reports a power outage. This is a passive and unavoidable handling method. If a circuit fault occurs in the first circuit module or communication between the first and second circuit modules is poor, it will still be falsely reported as a power outage.

[0090] 3. When the first circuit module is powered off, if the system has high power output, the high temperature generated by the heat accumulation in the first circuit module cannot be fed back to the second circuit module. The current improvement is to introduce operating voltage to the fan of the de-energized power supply from the Vout power bus. However, because the second circuit module cannot obtain the component temperature values ​​of the first circuit module, it cannot accurately adjust the fan speed. It can only passively adjust the fan speed to the maximum, without forming a detection-adjustment-feedback-calibration process, and thus cannot obtain an accurate fan speed, leading to customer complaints.

[0091] 4. Power information of the first circuit module, such as input voltage, current, PFC voltage and overvoltage protection status, cannot be transmitted to the second circuit module when the first circuit module is powered off, resulting in the second circuit module being in a blind state regarding the information of the first circuit module.

[0092] Therefore, this disclosure adds a target circuit module 40. When the first circuit module 20 is in a power-off state, the target circuit module 40 can transmit a third voltage from the second circuit module 30 to the first circuit module 20, enabling the first circuit module 20 to restart based on the third voltage. After restarting, the first circuit module 20 can transmit some circuit status information to the second circuit module 30, and then to the main controller 70, so that the main controller 70 knows the status of the first circuit module 20 and can make status adjustments. For example, it can enable the firmware upgrade of the first circuit module to continue; the circuit status information of the first circuit module can be detected normally and accurately reported to the second circuit module and transmitted to the main controller in real time; the temperature of the first circuit module can be normally transmitted to the second circuit module, enabling closed-loop control of the fan speed.

[0093] The working process of the power system with the added target circuit module will be described in detail below based on Embodiment 1 and Embodiment 2.

[0094] Example 1:

[0095] Figure 5 Structural framework of the power supply system provided in the embodiments of this disclosure Figure 6 .

[0096] As shown in Figure 3 The power supply system further comprises: a first isolation module 50 connected with the first circuit module 20 and the second circuit module 30 respectively; the first isolation module 50 is configured to transmit a first voltage signal of the first circuit module 20 to the second circuit module 30; the first voltage signal represents an operating state of the first power supply 11 and the first circuit module 20; if the first voltage signal is high, it indicates that the first power supply 11 and the first circuit module 20 are in a power supply state; if the first voltage signal is low or high impedance, it indicates that the first circuit module 20 is in a power-off state, and the power-off state is caused by a fault of the first power supply 11 and / or the first circuit module 20, resulting in the first voltage V1 being 0V.

[0097] When the first power supply 11 fails, the first voltage V1 will decrease to 0V, and at this time the first circuit module 20 is in a power-off state; when the first circuit module 20 fails, according to the fault type, the first voltage V1 may be 0V, or it may not be 0V; when the correction module 21 in the first circuit module 20 short-circuits, the first voltage V1 will decrease to 0V, and at this time the first circuit module 20 is in a power-off state; when the first circuit module 20 fails due to other faults and does not cause the first voltage to decrease to 0V, the first circuit module 20 is not in a power-off state; when the first power supply 11 and the first circuit module 20 both fail, causing the first voltage V1 to decrease to 0V, at this time the first circuit module 20 is in a power-off state.

[0098] When the first circuit module 20 changes from a power supply state to a power-off state, the first voltage signal will change from high to low, but if the first circuit module 20 is in a power-off state for a long time, the first voltage signal will become high impedance.

[0099] Figure 6 The power supply system provided by the embodiment of the present disclosure Figure 7 .

[0100] As shown in Figure 4 If the first circuit module 20 is in a power-off state, the second circuit module 30 is configured to send a control signal to the target circuit module 40;

[0101] The target circuit module 40 transmits a third voltage to the first circuit module 20 according to the control signal, so that the first circuit module 20 operates based on the third voltage.

[0102] Figure 7 The detailed structure of the power supply system provided by the first embodiment of the present disclosure Figure 8 , Figure 5 The working process of the power supply system with the added target circuit module when the first circuit module is in a power-off state is shown.

[0103] Specifically, if the first power supply 11 and the first circuit module 20 are in the power supply state, the first power supply module 24 transmits the high-level first voltage signal Va to the first isolation module 50, and the first isolation module 50 transmits the high-level first voltage signal Va to the second controller 34 of the second circuit module 30, so that the entire power supply system is powered based on the first power supply 11.

[0104] If the first circuit module is in the power-off state, the first voltage signal Va changes from the high level to the low level or the high resistance state, the first isolation module 50 transmits the low level or the high resistance state of the first voltage signal Va to the second controller 34, and the second controller 34 sends a control signal to the first processing module 41 of the target circuit module 40. The first processing module 41 sends a processing signal to transmit the third voltage V3 to the first circuit module 20 through the target circuit module 40, so that the first circuit module 20 operates based on the third voltage V3.

[0105] In an embodiment, the target circuit module 40 comprises: a first control module, a second isolation module 42, a first voltage conversion module 43 and a first feedback module 45, and the first control module is connected with the second isolation module 42 and the first voltage conversion module 43 respectively.

[0106] The first control module is configured to control the first voltage conversion module 43 to convert the second voltage V2 into the third voltage V3 and transmit the third voltage V3 to the first circuit module 20 to power at least part of the first circuit module 20.

[0107] The first feedback module 45 is configured to obtain a first feedback voltage Vb transmitted by the first circuit module 20 and transmit the first feedback voltage Vb to the second isolation module 42, wherein the first feedback voltage Vb is in proportional relationship with the third voltage V3.

[0108] The second isolation module 42 is configured to transmit the first feedback voltage Vb to the first control module.

[0109] The first control module is further configured to adjust a voltage conversion parameter of the first voltage conversion module 43 based on the first feedback voltage Vb, so that the first feedback voltage Vb is equal to a preset voltage.

[0110] In an embodiment, the target circuit module 40 further comprises: a first switch tube 44 connected with the first voltage conversion module 43 and the first control module respectively.

[0111] The second isolation module is connected with the first control module and the first feedback module 45 respectively.

[0112] Figure 7 Detailed structure of the power supply system provided by the first embodiment of the present disclosure Figure 8 .

[0113] Specifically, the first control module can be a first processing module 41 and / or a second controller 34. For example... Figure 9 As shown, the first voltage signal Va transmitted from the first circuit module 20 can be transmitted to the second controller 34, which controls the first transformer 43 to operate. However, the second controller 34 needs to be equipped with a device that can convert DC power to AC power; that is, the first processing module 41 and the first switching transistor 44 can be physically understood as being integrated into the second controller 34. Figure 1 As shown, the first voltage signal Va transmitted from the first circuit module 20 can first be transmitted to the second controller 34, and then the second controller 34 sends a control signal to the first processing module 41; in other embodiments, the first voltage signal Va can also be directly transmitted to the first processing module 41. The first processing module 41 can be a PWM chip.

[0114] When the first circuit module 20 is powered off, the second power supply module 33 provides power to the first processing module 41, enabling the first processing module 41 to operate. Simultaneously, the second voltage V2 is also transmitted to the first transformer module 43, which converts the second voltage V2 into a third voltage V3. Furthermore, as mentioned earlier, when the first processing module 41 is a PWM chip, the magnitude of the voltage output through the transformer module can be adjusted by changing the width of the high-level signal in the PWM chip. Therefore, the magnitude of the output third voltage V3 can be controlled by the PWM chip.

[0115] For example, the ratio of the third voltage V3 to the first feedback voltage Vb is 4:1, meaning that when the third voltage is 4V, the first feedback voltage Vb is 1V. Assuming the required value of the third voltage V3 in this disclosure is 4V, the preset voltage is 1V. If the third voltage V3 output by the first transformer module 43 is 6V, then the first feedback voltage Vb is 1.5V, which is greater than the preset voltage. Therefore, the high-level bandwidth of the PWM chip needs to be reduced to decrease the third voltage V3. Conversely, if the first feedback voltage Vb is less than the preset voltage, the high-level bandwidth of the PWM chip needs to be increased to increase the third voltage V3.

[0116] In other embodiments, the PWM chip can be replaced with a chip that can adjust the frequency.

[0117] In this disclosure, the first transformer module 43 can be either a boost module or a buck module, depending on the relationship between the third voltage V3 and the second voltage V2. If the third voltage V3 required by the first circuit module 20 is greater than the second voltage V2, a boost module is selected; if the third voltage V3 is less than the second voltage V2, a buck module is selected.

[0118] The third voltage V3 enters the first circuit module 20, first enters the second rectification and filtering module 25, enters the first power supply module 24 after rectification and filtering, so that the first power supply module 24 can provide power supply voltage for other loads of the first circuit module 20 again, and after the first circuit module 20 runs again, some circuit state information of the first circuit module 20 is transmitted to the second circuit module 30, so that the second circuit module 30 knows the state of the first circuit module 20, so as to adjust the state.

[0119] Embodiment two:

[0120] Figure 9 The detailed structure of the power supply system provided in embodiment two of the present disclosure is shown in Figure 10 . The connection relationship between the components in embodiment two is shown in Figure 2 .

[0121] Figure 10 The detailed structure of the power supply system provided in embodiment two of the present disclosure is shown in Figure 3 . Figure 11 The working process of the power supply system when the first power supply 11 and the first circuit module 20 are in a power supply state in embodiment two is shown, wherein the working process is the same as that of embodiment one shown in Figure 3 , which will not be described here.

[0122] Figure 4 The detailed structure of the power supply system provided in embodiment two of the present disclosure is shown in Figure 12 . Figure 4 The working process of the second circuit module 30 running again through the second voltage V2 when the first circuit module 20 is in a power-off state is shown, wherein the working process is the same as that of embodiment one shown in Figure 13 , which will not be described here.

[0123] Meanwhile, the process of transmitting the first voltage signal Va through the first isolation module 50 in embodiment two is the same as that of embodiment one, which will not be described here.

[0124] Figure 5 The detailed structure of the power supply system provided in embodiment two of the present disclosure is shown in Figure 12 .

[0125] The working process of the target circuit module in embodiment two will be described below.

[0126] In an embodiment, the target circuit module 40 includes: a circuit conversion module 46, a second voltage conversion module 62, a second control module, and a second feedback module 48;

[0127] The circuit conversion module 46 is connected with the second voltage conversion module 62, and is used for converting the positive and negative power of the second voltage conversion module 62.

[0128] The second control module is connected to the second transformer module 62 through the circuit conversion module 46. It is used to control the second transformer module 62, after converting the positive and negative power, to convert the second voltage V2 into the third voltage V3 and then transmit it to the first circuit module 20 to supply power to at least part of the first circuit module 20.

[0129] In one embodiment, the second feedback module 48 is used to acquire the second feedback voltage Vb transmitted by the first circuit module 20 and transmit the second feedback voltage Vb to the first isolation module 50; wherein the second feedback voltage Vb is proportional to the third voltage V3.

[0130] The first isolation module 50 is also used to transmit the second feedback voltage Vb to the second control module;

[0131] The second control module is also used to adjust the voltage conversion parameters of the second transformer module 62 based on the second feedback voltage Vb, so that the second feedback voltage Vb is equal to the preset voltage.

[0132] In the second embodiment, the original second transformer module 62 of the power supply system is used. When the first circuit module 20 is in a de-energized state, the second transformer module 62 is in an idle state. Therefore, the second transformer module 62 can be used to add a circuit conversion module 46 and a second control module. Other functional circuits use the original circuits of the power supply system as much as possible, thereby reducing the implementation cost.

[0133] Figure 13 Detailed structural diagram of the power supply system provided in Embodiment 2 of this disclosure Figure 14 .

[0134] Specifically, the first control module can be the second processing module 47 and / or the second controller 34. For example... Figure 1 As shown, the first voltage signal Va transmitted from the first circuit module 20 can be transmitted to the second controller 34, which controls the second transformer 62 to operate. However, the second controller 34 needs to be equipped with a device that can convert direct current to alternating current; for example... Figure 15 As shown, the first voltage signal Va transmitted from the first circuit module 20 can first be transmitted to the second controller 34, and then the second controller 34 sends a control signal to the second processing module 47; in other embodiments, the first voltage signal Va can also be directly transmitted to the second processing module 47. The second processing module 47 can be a PWM chip.

[0135] When the first circuit module 20 is powered off, the second power supply module 33 provides power to the second processing module 47 to enable it to operate. At this time, the circuit conversion module 46 converts the positive and negative power of the second transformer module 62, allowing it to be applied to the target circuit module 40. Simultaneously, the second voltage V2 is transmitted to the circuit conversion module 46 and then to the second transformer module 62, which converts it into a third voltage V3. Furthermore, as mentioned earlier, when the second processing module 47 is a PWM chip, the voltage output through the transformer module can be adjusted by changing the width of the high-level signal in the PWM chip; therefore, the magnitude of the output third voltage V3 can be controlled by the PWM chip.

[0136] For example, the ratio of the third voltage V3 to the second feedback voltage Vb is 4:1, meaning that when the third voltage is 4V, the second feedback voltage Vb is 1V. Assuming the required value of the third voltage V3 in this disclosure is 4V, the preset voltage is 1V. If the third voltage V3 output by the second transformer module 62 is 6V, then the second feedback voltage Vb is 1.5V, which is greater than the preset voltage. Therefore, the width of the high level in the PWM chip needs to be reduced to decrease the third voltage V3. Conversely, if the second feedback voltage Vb is less than the preset voltage, the width of the high level in the PWM chip needs to be increased to increase the third voltage V3.

[0137] In other embodiments, the PWM chip can be replaced with a chip that can adjust the frequency.

[0138] After the third voltage V3 enters the first circuit module 20, it first enters the second rectification and filtering module 25. After rectification and filtering, it enters the first power supply module 24, so that the first power supply module 24 can resume supplying power voltage to other loads of the first circuit module 20. After the first circuit module 20 restarts, it can transmit some circuit status information of the first circuit module 20 to the second circuit module 30, so that the second circuit module 30 knows the status of the first circuit module 20 and can make status adjustments.

[0139] In one embodiment, the first circuit module 20 is further configured to, when detecting that the first power supply 11 and the first circuit module 20 are in a power supply state, control the first voltage V1 to delay powering the second circuit module 30 and transmit a high-level first voltage signal Va to the first isolation module 50.

[0140] The first isolation module 50 is also used to transmit the high-level first voltage signal Va to the second circuit module 30;

[0141] The second circuit module 30 is also used to convert the positive and negative power of the second transformer module 62 according to the high-level first voltage signal Va, and to disconnect the connection between the second transformer module 62 and the second control module.

[0142] Specifically, after the fault of the first power supply 11 and / or the first circuit module 20 is resolved, and the first circuit module 20 is able to resume power supply to the second circuit module 30, it will control the first voltage V1 to supply power to the second circuit module 30 with a millisecond-level delay. This is because at this time, the target circuit module 40 is supplying power to the first circuit module 20 in reverse through the second transformer module 62. If the first voltage V1 is also transmitted from the second transformer module 62 to the second circuit module 30 at this time, it may cause a short circuit. Therefore, the first voltage V1 is delayed in starting, and the first circuit module 20 transmits a high-level first voltage signal Va to the second circuit module 30, letting the second circuit module 30 know that the first circuit module 20 has resumed normal operation and can provide power supply service. At this time, the second circuit module 30 re-converts the positive and negative power of the second transformer module 62 and disconnects the connection between the second transformer module 62 and the second control module, so that the second transformer module 62 can be reused in the power supply from the first circuit module 20 to the second circuit module 30.

[0143] Figure 2 This is a schematic diagram of the target circuit module in Embodiment 2 of this disclosure. Figure 14 , Figure 15 This is a schematic diagram of the target circuit module in Embodiment 2 of this disclosure. Figure 14 ,in, Figure 15 This illustrates the process of the first circuit module supplying power to the second circuit module. Figure 14 The process of the target circuit module supplying power to the first circuit module is shown.

[0144] like Figure 15 and Figures 1 to 15 As shown, the circuit conversion module 46 is the part circled by the dashed box in the figure.

[0145] In one embodiment, the circuit conversion module 46 includes a first normally closed contact 461, a second normally closed contact 462, a first normally open contact 463, and a second normally open contact 464, wherein the common terminal of the first normally closed contact 461 and the first normally open contact 463 is connected to the positive terminal of the second transformer module 62, and the common terminal of the second normally closed contact 462 and the second normally open contact 464 is connected to the negative terminal of the second transformer module 62.

[0146] When the first power supply 11 and the first circuit module 20 are in the power supply state, the first normally closed contact 461 and the second normally closed contact 462 are connected so that the positive terminal of the second transformer module 62 is connected to the first rectifier and filter module 32, and the negative terminal is grounded.

[0147] When the first circuit module 20 is in a power-off state, the first normally closed contact 461 and the second normally closed contact 462 are disconnected, and the first normally open contact 463 and the second normally open contact 464 are connected, so that the second control module is connected to the second transformer module 62.

[0148] Specifically, such as Figures 1 to 15 As shown, when the first power supply 11 and the first circuit module 20 are in the power supply state, the first normally closed contact 461 and the second normally closed contact 462 are connected by default. The positive terminal of the second transformer module 62 is connected to the first rectifier and filter module 32, and the negative terminal is grounded, so as to transmit the first voltage V1 to the second circuit module 20.

[0149] like Figures 1 to 15 As shown, when the first circuit module 20 is in a power-off state, the second controller 34 sends a conversion signal to switch the state of the conversion drive circuit 465 in the circuit conversion module 46 from a low level state to a high level state, thus turning on the conversion drive circuit 465. The second control module connects to the circuit conversion module 46, controlling the first normally closed contact 461 and the second normally closed contact 462 to open, and the first normally open contact 463 and the second normally open contact 464 to close. At this time, the second voltage V2 is transmitted to the positive terminal of the second transformer module 62, and the negative terminal of the second transformer module 62 is connected to the second control module through the second switching transistor 49. The second voltage V2 is converted into the third voltage V3 by the second transformer module 62.

[0150] In this disclosure, when the first circuit module 20 is in a de-energized state, the original primary side excitation coil of the second transformer module 62 no longer has excitation voltage. After judgment, control and conversion by the second circuit module 30, the original secondary side output coil becomes a new excitation coil, realizing reverse power supply. When the first power supply 11 and the first circuit module 20 are in a powered state, after judgment, control and conversion again, the original primary side excitation coil of the second transformer module 62 is connected to the excitation voltage again, and the original secondary side coil becomes the original output coil.

[0151] Under the opposite conditions of the first power supply and the first circuit module being powered on and the first circuit module being powered off, the circuit is converted and reorganized by the second transformer as the center through conversion control, forming two different circuit combinations and generating two completely different working modes, namely realizing two different power supply methods of forward and reverse, thereby solving the problem caused by the power failure of the first circuit module.

[0152] This disclosure also provides a control method applied to a target circuit module of a power supply system, the power supply system further including a first circuit module and a second circuit module, the method comprising:

[0153] Monitor the first voltage transmitted from the first circuit module to the second circuit module;

[0154] When the first circuit module is in a power-off state, a third voltage is transmitted to the first circuit module based on the second voltage so that the first circuit module can operate based on the third voltage.

[0155] There is electrical isolation between the first circuit module and the second circuit module, and the second voltage is the voltage input from the second circuit module to the target circuit module.

[0156] It should be noted here that the above description of the control method embodiments is consistent with the foregoing ​ The product embodiments shown are described similarly and have the same characteristics as described above. ​ The beneficial effects of the product embodiments shown are similar, and therefore will not be repeated. For technical details not disclosed in the control method embodiments of this disclosure, please refer to the foregoing of this disclosure. ​ The product embodiments shown are for illustrative purposes only and will not be described in detail here for brevity.

[0157] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0158] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A power supply system, comprising: A first circuit module is connected to a first power supply and is used to transmit a first voltage to a second circuit module. The first voltage is determined based on the voltage input to the first power supply. There is electrical isolation between the first circuit module and the second circuit module. The second circuit module is connected to the first circuit module. When the first circuit module is in a power-off state, it acquires a second voltage and transmits the second voltage to the target circuit module. The second voltage is determined based on the voltage of the second power supply input. The target circuit module transmits a third voltage to the first circuit module based on the second voltage, so that the first circuit module operates based on the third voltage.

2. The power supply system according to claim 1, further comprising: The first isolation module is connected to the first circuit module and the second circuit module respectively; The first voltage signal of the first circuit module is used to transmit the first voltage signal of the first circuit module to the second circuit module; the first voltage signal represents the operating state of the first power supply and the first circuit module; wherein, if the first voltage signal is high, it represents that the first power supply and the first circuit module are in a power supply state; if the first voltage signal is low or high impedance, it represents that the first circuit module is in a power-off state, and the power-off state is caused by a fault in the first power supply and / or the first circuit module, resulting in the first voltage being 0V.

3. The power supply system according to claim 2, If the first circuit module is in a power-off state, the second circuit module is used to send a control signal to the target circuit module; The target circuit module transmits a third voltage to the first circuit module according to the control signal, so that the first circuit module operates based on the third voltage.

4. The power supply system according to claim 1, The target circuit module includes: The system comprises a first control module, a second isolation module, a first transformer module, and a first feedback module, wherein the first control module is connected to the second isolation module and the first transformer module, respectively. The first control module is used to control the first transformer module to convert the second voltage into the third voltage and transmit it to the first circuit module to supply power to at least a portion of the first circuit module; The first feedback module is used to acquire the first feedback voltage transmitted by the first circuit module and transmit the first feedback voltage to the second isolation module; wherein the first feedback voltage is proportional to the third voltage; The second isolation module is used to transmit the first feedback voltage to the first control module; The first control module is further configured to adjust the voltage conversion parameters of the first transformer module based on the first feedback voltage, so that the first feedback voltage is equal to a preset voltage.

5. The power supply system according to claim 4, The target circuit module also includes: The first switching transistor is connected to the first transformer module and the first control module respectively; The second isolation module is connected to the first control module and the first feedback module, respectively.

6. The power supply system according to claim 2, The target circuit module includes: Circuit conversion module, second transformer module, second control module, and second feedback module; The circuit conversion module is connected to the second transformer module and is used to convert the positive and negative power of the second transformer module; The second control module is connected to the second transformer module through the circuit conversion module, and is used to control the second transformer module, after converting the positive and negative power, to convert the second voltage into a third voltage and transmit it to the first circuit module to supply power to at least part of the first circuit module.

7. The power supply system according to claim 6, The second feedback module is used to acquire the second feedback voltage transmitted by the first circuit module and transmit the second feedback voltage to the first isolation module; wherein, The second feedback voltage is proportional to the third voltage; The first isolation module is further configured to transmit the second feedback voltage to the second control module; The second control module is further configured to adjust the voltage conversion parameters of the second transformer module based on the second feedback voltage, so that the second feedback voltage is equal to a preset voltage.

8. The power supply system according to claim 6, The first circuit module is further configured to, when detecting that the first power supply and the first circuit module are in a power supply state, control the first voltage delay to supply power to the second circuit module and transmit a high-level first voltage signal to the first isolation module; The first isolation module is also used to transmit the high-level first voltage signal to the second circuit module; The second circuit module is further configured to convert the positive and negative power of the second transformer module according to the high-level first voltage signal, and to disconnect the connection between the second transformer module and the second control module.

9. The power supply system according to claim 6, The circuit conversion module includes a first normally closed contact, a second normally closed contact, a first normally open contact, and a second normally open contact, wherein... The common terminal of the first normally closed contact and the first normally open contact is connected to the positive terminal of the second transformer module, and the common terminal of the second normally closed contact and the second normally open contact is connected to the negative terminal of the second transformer module. When the first power supply and the first circuit module are in a power supply state, the first normally closed contact and the second normally closed contact are connected so that the positive terminal of the second transformer module is connected to the first rectifier and filter module, and the negative terminal is grounded. When the first circuit module is in a power-off state, the first normally closed contact and the second normally closed contact are disconnected, and the first normally open contact and the second normally open contact are connected, so that the second control module is connected to the second transformer module.

10. A control method applied to a target circuit module of a power supply system, the power supply system further comprising a first circuit module and a second circuit module, the method comprising: Monitor the first voltage transmitted from the first circuit module to the second circuit module; When the first circuit module is in a power-off state, a third voltage is transmitted to the first circuit module based on the second voltage, so that the first circuit module operates based on the third voltage; There is electrical isolation between the first circuit module and the second circuit module, and the second voltage is the voltage input by the second circuit module to the target circuit module.

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