Power driving system with output delay function and delay-adjustable delay device

Abstract

The utility model relates to a power supply driving system with an output delay function and a delay-adjustable delay device, the delay-adjustable delay device comprises a delay module and a power supply module, the delay module comprises a three-terminal voltage stabilizing element, a relay, a second electrolytic capacitor, a first divider resistor and a second divider resistor; the delay module is used for adjusting delay time of power supply of the load end to the load through the second electrolytic capacitor and controlling the relay to work through the three-end voltage stabilizing element; the power module is used for providing working voltage for the relay and the three-terminal voltage stabilizing element, the input end of the power module is connected with the power end, and the output end of the power module is connected with the time delay module. According to the time-delay-adjustable time-delay device, the three-terminal voltage-stabilizing element, the relay, the second electrolytic capacitor, the first divider resistor and the second divider resistor form the time-delay module which is relatively low in cost, safe and reliable, so that the time-delay-adjustable time-delay device has the characteristics that the time-delay time is adjustable, and the output power of a load end does not need to be improved.

Description

Technical Field

[0001] This application belongs to the field of power supply technology, and in particular relates to a power drive system with output delay function and a delay device with adjustable delay. Background Technology

[0002] With the rapid development of technology and the improvement of people's living standards, the perfection and technological iteration of the Internet of Things (IoT), the popularization of Industry 4.0, and the transformation of factories into intelligent manufacturing, a large number of intelligent automated production tools, intelligent consumer products, and health and physiotherapy auxiliary products have emerged. These products all have high capacitive or high inductive load structures, characterized by high power, high reliability, and high starting current. Therefore, the power supplies adapted to them need to meet the requirements of high capacitive and high inductive loads to ensure that the power supply does not overpower during startup or cause damage. This necessitates increasing the power supply's output power and reliability. To ensure the power supply does not shut down or fail during device startup, the instantaneous power of the product needs to be increased. However, this increases the cost of the power supply or reduces its energy efficiency, which in turn reduces the product's reliability, making it difficult to meet the actual operating requirements of the products.

[0003] Currently, two main approaches are used: First, power supplies with power control chips featuring PEAK LOAD functionality. These chips utilize internal current detection and delay functions to provide a soft-start effect, preventing the instantaneous voltage pulse and the device's power-on load from overlapping and causing the power supply to fail to boot or become damaged. However, this delay time is fixed and cannot be adjusted for different devices. Second, larger energy storage capacitors and high-AE value high-frequency transformers are used to increase the total output power of the power supply. However, this significantly increases costs and reduces power supply efficiency. Utility Model Content

[0004] One embodiment of this application provides a power drive system with output delay function and a delay device with adjustable delay, to solve the problem that the delay time of existing power supplies is fixed or cannot be adjusted according to the load.

[0005] In a first aspect, one embodiment of this application provides a delay device with adjustable delay, comprising:

[0006] A delay module, used for connection to a load terminal, includes a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. The first terminal of the three-terminal voltage regulator is connected to the first terminal of the relay coil. The second terminal of the three-terminal voltage regulator is connected to the positive terminal of the second electrolytic capacitor, the second terminal of the first voltage divider resistor, and the first terminal of the second voltage divider resistor. The second terminal of the first voltage divider resistor is connected to the second terminal of the relay coil. The contact point of the relay is connected to the load terminal. The second terminal of the second voltage divider resistor, the negative terminal of the second electrolytic capacitor, and the third terminal of the three-terminal voltage regulator are all grounded. The delay module is used to adjust the delay time of power supply from the load terminal to the load via the second electrolytic capacitor, and to control the operation of the relay via the three-terminal voltage regulator.

[0007] The power supply module is used to provide operating voltage to the relay and the three-terminal voltage regulator. The input terminal of the power supply module is connected to the power supply terminal, and the output terminal of the power supply module is connected to the delay module.

[0008] Optionally, the delay module further includes a first semiconductor element for discharging and a filter capacitor for filtering. The cathode of the first semiconductor element is connected to the second end of the coil of the relay, and the anode of the first semiconductor element is connected to the second end of the three-terminal voltage regulator and the first end of the filter capacitor. The second end of the filter capacitor is grounded.

[0009] Optionally, the power module includes a first electrolytic capacitor, a current-limiting resistor, a bias resistor, a first Zener diode, a first switching transistor, and an energy storage capacitor. The anode of the first electrolytic capacitor and the first terminal of the current-limiting resistor are both connected to the power supply terminal. The second terminal of the current-limiting resistor and the first terminal of the bias resistor are respectively connected to the first terminal of the first switching transistor. The second terminal of the first switching transistor is connected to the first terminal of the energy storage capacitor, and the connection point is used as the output terminal of the power module. The third terminal of the first switching transistor is respectively connected to the second terminal of the bias resistor and the cathode of the first Zener diode. The anode of the first Zener diode, the second terminal of the first electrolytic capacitor, and the second terminal of the energy storage capacitor are all grounded.

[0010] Optionally, a first resistor is connected in series between the first terminal of the three-terminal voltage regulator and the first terminal of the relay coil.

[0011] In a first aspect, one embodiment of this application provides a power drive system with an output delay function, including an input filtering and rectification module, a power boost module, a power conversion module and an output module connected in sequence. The output module is connected to the aforementioned delay-adjustable delay device to adjust the delay time of the output module's power supply to the load.

[0012] Optionally, the power drive system with output delay function includes a fast start module, the input terminal of which is connected to the output terminal of the input filter and rectifier module, and the output terminal of which is connected to the power boost module and the power conversion module respectively.

[0013] Optionally, the fast start module includes a second switch, a third switch, a second Zener diode, a second semiconductor element, and a second capacitor. The first terminal of the second switch is connected to the output terminal of the input filter and rectifier module, the cathode of the second Zener diode, and the third terminal of the third switch. The first terminal of the third switch is connected to the output terminal of the input filter and rectifier module. The second terminal of the second switch is connected to the power conversion module. The second terminal of the third switch is connected to the first terminal of the second semiconductor element. The second terminal of the second semiconductor element is connected to the first terminal of the second capacitor and the power boost module. The second terminal of the second capacitor, the anode of the second Zener diode, and the third terminal of the second switch are all grounded.

[0014] Optionally, the power boost module is used to boost the voltage output by the input filter and rectifier module to a first voltage. The power boost module includes a boost control chip, which is connected to both the input filter and rectifier module and the power conversion module.

[0015] Optionally, the power conversion module is used to convert the first voltage output by the power boost module. The power conversion module includes a power conversion chip and a transformer. The power conversion chip is connected to the power boost module and the transformer respectively, and the output terminal of the transformer is connected to the output module.

[0016] Optionally, the output module includes a connection terminal connected to the delay-adjustable delay device.

[0017] One embodiment of this application provides a power drive system with output delay function and an adjustable delay device. The adjustable delay device includes a delay module and a power module. The delay module is used to connect to the load terminal and includes a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. The first terminal of the three-terminal voltage regulator is connected to the first terminal of the relay coil. The second terminal of the three-terminal voltage regulator is connected to the positive terminal of the second electrolytic capacitor, the second terminal of the first voltage divider resistor, and the first terminal of the second voltage divider resistor. The second terminal of the first voltage divider resistor is connected to the second terminal of the relay coil. The contact point of the relay is connected to the load terminal. The second terminal of the second voltage divider resistor, the negative terminal of the second electrolytic capacitor, and the third terminal of the three-terminal voltage regulator are all grounded. The delay module is used to adjust the delay time of power supply from the load terminal to the load through the second electrolytic capacitor and to control the operation of the relay through the three-terminal voltage regulator. The power module is used to provide operating voltage to the relay and the three-terminal voltage regulator. The input terminal of the power module is connected to the power supply terminal, and the output terminal of the power module is connected to the delay module. This adjustable delay device is a low-cost and reliable delay module composed of a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. This allows the adjustable delay device to have an adjustable delay time without increasing the output power at the load end, thus solving the problem that the delay time of existing power supplies is fixed or cannot be adjusted according to the load. Attached Figure Description

[0018] To more clearly illustrate the technical solution in one embodiment of this application, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0020] Figure 1 A schematic diagram of a delay device with adjustable delay provided for one embodiment of this application.

[0021] Figure 2 A circuit diagram of an adjustable delay device provided for one embodiment of this application.

[0022] Figure 3 A schematic diagram of the framework of a power drive system with output delay function provided for an embodiment of this application.

[0023] Figure 4A circuit diagram of a power drive system with output delay function provided in one embodiment of this application. Detailed Implementation

[0024] The technical solution of one embodiment of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] One embodiment of this application provides a power drive system with output delay function and a delay device with adjustable delay, to solve the problem that the delay time of existing power supplies is fixed or cannot be adjusted according to the load.

[0026] Example 1:

[0027] One embodiment of this application provides an adjustable delay device; for example, please refer to [link to relevant documentation]. Figure 1 , Figure 1 A schematic diagram of a frame of an adjustable delay device provided for one embodiment of this application. Figure 2 A circuit diagram of an adjustable delay device provided for one embodiment of this application.

[0028] like Figure 1 As shown, this utility model application provides a delay device with adjustable delay, including a delay module 10 and a power module 20 connected to the delay module 10.

[0029] like Figure 2As shown in the embodiment of this utility model, the delay module 10 is used to connect to the load terminal LOAD-IN / LOAD-OUT. The delay module 10 includes a three-terminal voltage regulator U101, a relay RL101, a second electrolytic capacitor CE2, a first voltage divider resistor R103, and a second voltage divider resistor R104. The first terminal of the three-terminal voltage regulator U101 is connected to the first terminal of the coil of the relay RL101. The second terminal of the three-terminal voltage regulator U101 is connected to the positive terminal of the second electrolytic capacitor CE2, the second terminal of the first voltage divider resistor R103, and the second terminal of the second voltage divider resistor R104. One end is connected to the second end of the first voltage divider resistor R103, which is connected to the second end of the coil of relay RL101. The contact point of relay RL101 is connected to the load terminal LOAD-IN / LOAD-OUT. The second end of the second voltage divider resistor R104, the negative terminal of the second electrolytic capacitor CE2, and the third end of the three-terminal voltage regulator U101 are all grounded. The delay module 10 is used to adjust the delay time of the load terminal LOAD-IN / LOAD-OUT supplying power to the load through the second electrolytic capacitor CE2, and to control the operation of relay RL101 through the three-terminal voltage regulator U101. The power supply module 20 is used to provide operating voltage to relay RL101 and three-terminal voltage regulator U101. The input terminal of power supply module 20 is connected to the power supply terminal VDD, and the output terminal of power supply module 20 is connected to delay module 10.

[0030] To further clarify, the three-terminal voltage regulator U101 can be selected as a three-terminal Zener diode. The voltage at the power supply terminal VDD is divided by the first voltage divider resistor R103 and the second voltage divider resistor R104 and then connected to the voltage comparator input terminal of the three-terminal voltage regulator U101. In this example, the regulated voltage of the selected three-terminal voltage regulator is 2.5V. The voltage divider resistors after the first voltage divider resistor R103 and the second voltage divider resistor R104 need to be higher than the 2.5V reference power supply, thereby increasing the current flowing between the first and third terminals of the three-terminal voltage regulator U101, enabling the relay RL101 and the three-terminal voltage regulator U101 to form a current loop and operate. The delay device with adjustable delay can select the capacitance value of the second electrolytic capacitor CE2 to adjust the delay time; for example, the larger the capacitance of the second electrolytic capacitor CE2, the longer it takes for the charging voltage of the second electrolytic capacitor CE2 to reach the reference voltage of 2.5V or above; conversely, the smaller the capacitance of the second electrolytic capacitor CE2, the shorter it takes for the charging voltage of the second electrolytic capacitor CE2 to reach the reference voltage of 2.5V or above.

[0031] In the embodiments of this utility model, the adjustable delay device, composed of delay module 10 and power module 20, can adapt to power supplies with capacitive and inductive loads. When this adjustable delay device is applied to a power supply, the power supply first meets the power-on state, and the power output is controlled by the switching action of relay RL101 to avoid current spikes during startup of capacitive and inductive loads. In particular, this adjustable delay device is also suitable for power supplies in medium to high power applications. The use of relay RL101 as the control switch in this adjustable delay device ensures high reliability.

[0032] Furthermore, the adjustable delay device is composed of a low-cost and reliable delay module 10 consisting of a three-terminal voltage regulator U101, a relay RL101, a second electrolytic capacitor CE2, a first voltage divider resistor R103, and a second voltage divider resistor R104. This allows the adjustable delay device to have an adjustable delay time without needing to increase the output power at the load end.

[0033] An embodiment of this application provides an adjustable delay device, including a delay module and a power supply module. The delay module is used to connect to a load terminal and includes a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. The first terminal of the three-terminal voltage regulator is connected to the first terminal of the relay coil, and the second terminal of the three-terminal voltage regulator is connected to the positive terminal of the second electrolytic capacitor, the second terminal of the first voltage divider resistor, and the first terminal of the second voltage divider resistor. The second terminal of the first voltage divider resistor is connected to the second terminal of the relay coil, and the relay contact is connected to the load terminal. The second terminal of the second voltage divider resistor, the negative terminal of the second electrolytic capacitor, and the third terminal of the three-terminal voltage regulator are all grounded. The delay module is used to adjust the delay time of power supply from the load terminal to the load through the second electrolytic capacitor and to control the operation of the relay through the three-terminal voltage regulator. The power supply module is used to provide operating voltage to the relay and the three-terminal voltage regulator. The input terminal of the power supply module is connected to the power supply terminal, and the output terminal of the power supply module is connected to the delay module. This adjustable delay device is a low-cost and reliable delay module composed of a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. This allows the adjustable delay device to have an adjustable delay time without increasing the output power at the load end, thus solving the problem that the delay time of existing power supplies is fixed or cannot be adjusted according to the load.

[0034] It should be noted that the adjustable delay device is connected to the load terminal LOAD-IN / LOAD-OUT, so that the power supply connected to the load terminal LOAD-IN / LOAD-OUT is always in standby mode. This avoids the instantaneous power when the load is connected and the instantaneous peak current when the power supply is turned on, which would cause the power supply to fail to turn on or be damaged.

[0035] like Figure 2 As shown, in one embodiment of the present invention, the delay module 10 further includes a first semiconductor element D101 for discharging and a filter capacitor C102 for filtering. The cathode of the first semiconductor element D101 is connected to the second end of the coil of the relay RL101, and the anode of the first semiconductor element D101 is connected to the second end of the three-terminal voltage regulator U101 and the first end of the filter capacitor C102. The second end of the filter capacitor C102 is grounded.

[0036] Furthermore, the first semiconductor element D101 can be a diode. This adjustable delay device uses the second voltage divider resistor R104 as the discharge resistor for the second electrolytic capacitor CE2, and the first semiconductor element D101 as the discharge path for both the second electrolytic capacitor CE2 and the relay coil, preventing unstable operation of the relay RL101 coil. A filter capacitor C102 is used to filter noise interference in the delay module 10 filter circuit, improving the reliability and stability of the adjustable delay device.

[0037] like Figure 2 As shown, in one embodiment of the present invention, the power module 20 includes a first electrolytic capacitor CE1, a current-limiting resistor R101, a bias resistor R103, a first Zener diode ZD101, a first switching transistor Q101, and an energy storage capacitor C101. The anode of the first electrolytic capacitor CE1 and the first terminal of the current-limiting resistor R101 are both connected to the power supply terminal VDD. The second terminal of the current-limiting resistor R101 and the first terminal of the bias resistor R103 are respectively connected to the first terminal of the first switching transistor Q101. The second terminal of the first switching transistor Q101 is connected to the first terminal of the energy storage capacitor C101, and the connection point is used as the output terminal of the power module 20. The third terminal of the first switching transistor Q101 is connected to the second terminal of the bias resistor R103 and the cathode of the first Zener diode ZD101. The anode of the first Zener diode ZD101, the second terminal of the first electrolytic capacitor CE1, and the second terminal of the energy storage capacitor C101 are all grounded.

[0038] Furthermore, the first switching transistor Q101 can be selected as a MOSFET, with the drain of the MOSFET serving as the first terminal of Q101, the source of the MOSFET serving as the second terminal, and the gate of the MOSFET serving as the third terminal. This adjustable delay device provides operating voltage to the relay RL101 and the three-terminal voltage regulator U101 via the power supply module 20. In this embodiment, the power supply module 20 is typically used when the voltage at the power supply terminal VDD is higher than the 36VDC output. Utilizing the reverse breakdown characteristic of the first Zener diode ZD101, and by selecting appropriate parameters for the first Zener diode ZD101, the relay RL101 and the three-terminal voltage regulator U101 operate within a safe voltage range.

[0039] like Figure 2 As shown, in one embodiment of the present invention, a first resistor R105 is connected in series between the first terminal of the three-terminal voltage regulator U101 and the first terminal of the coil of the relay RL101.

[0040] To further explain, the first resistor R105 is connected between the relay RL101 and the first terminal (e.g., the negative terminal) of the three-terminal voltage regulator U101. By selecting the resistance value of the first resistor R105, the operating current between the first terminal of the three-terminal voltage regulator U101 and the first terminal of the coil of the relay RL101 can be adjusted, ensuring the reliable operation of the three-terminal voltage regulator U101. In this embodiment, the power supply terminal VDD passes through the current loop formed by the current-limiting resistor R101, the first switching transistor Q101, the relay RL101, the first resistor R105, and the three-terminal voltage regulator U101. The coil current of the relay RL101 flows through the relay and triggers the contact switch of the relay RL101, completing the switching of the main output load terminal LOAD-IN / LOAD-OUT.

[0041] Example 2:

[0042] One embodiment of this application provides a power drive system with output delay function; for example, please refer to [link to relevant documentation]. Figure 3 , Figure 3 A schematic diagram of the framework of a power supply drive system with output delay function provided in one embodiment of this application. Figure 4 A circuit diagram of a power drive system with output delay function provided in one embodiment of this application.

[0043] like Figure 3As shown, this utility model provides a power drive system with output delay function, including an input filtering and rectification module 100, a power boost module 200, a power conversion module 300 and an output module 400 connected in sequence. The output module 400 is connected to the aforementioned delay-adjustable delay device to adjust the delay time of the output power from the output module to the load.

[0044] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the power drive system with output delay function includes a fast start module 500. The input terminal of the fast start module 500 is connected to the output terminal of the input filter and rectifier module 100, and the output terminal of the fast start module 500 is connected to the power boost module 200 and the power conversion module 300, respectively. The fast start module 500 includes a second switch Q4, a third switch Q5, a second Zener diode ZD1, a second semiconductor element D3, and a second capacitor C2. The first terminal of the second switch Q4 is connected to the output terminal of the input filter and rectifier module 100, the cathode of the second Zener diode ZD1, and the third terminal of the third switch Q5. The first terminal of the third switch Q5 is connected to the output terminal of the input filter and rectifier module 100. The second terminal of the second switch Q4 is connected to the power conversion module 300. The second terminal of the third switch Q5 is connected to the first terminal of the second semiconductor element D3. The second terminal of the second semiconductor element D3 is connected to the first terminal of the second capacitor C2 and the power boost module 200. The second terminal of the second capacitor C2, the anode of the second Zener diode ZD1, and the third terminal of the second switch Q4 are all grounded.

[0045] Furthermore, the second semiconductor element D3 can be a diode. The second switch Q4 can be a transistor, with its collector serving as the first terminal, its base as the second terminal, and its emitter as the third terminal. The third switch Q5 can be a MOSFET, with its drain as the first terminal, its source as the second terminal, and its gate as the third terminal. In this embodiment, resistors R14, R15, and R16 are connected in series between the first terminal of the second switch Q4 and the output terminal of the input filter and rectification module 100, and resistors R17, R18, and R19 are connected in series between the first terminal of the third switch Q5 and the output terminal of the input filter and rectification module 100. Specifically, when the power drive system with output delay function is working, the DC voltage output from the input filter and rectifier module 100 is applied to the first terminal of the third switch Q5 through resistors R17, R18, and R19. The voltage at the third terminal of the third switch Q5, after passing through resistors R14, R15, and R16 to obtain the startup voltage, turns on the third switch Q5. After being charged by the second semiconductor element D3 and the second capacitor C2 to meet the startup voltage of the power boost module 200, the initial startup is completed. Simultaneously, the voltage at the second terminal of the second switch Q4 rises, and the current at the second terminal of the second switch Q4 continuously increases. After the second switch Q4 enters saturation, the voltage at the first terminal of the second switch Q4 is clamped due to the action of the second Zener diode ZD1. The second terminal of the third switch Q5 is connected to the second capacitor C2 through the second semiconductor element D3. At this time, the voltage at the third terminal of the third switch Q5 is equal to the voltage of the second capacitor C2, and the third switch Q5 is turned off.

[0046] like Figure 4 As shown in the embodiment of the present utility model, the power boost module 200 is used to boost the voltage output by the input filter rectifier module 100 to a first voltage. The power boost module 200 includes a boost control chip U1, which is connected to the input filter rectifier module 100 and the power conversion module 300 respectively.

[0047] Furthermore, the first voltage can be between 360VDC and 420VDC. The boost control chip U1 can be selected as the OB6566MP model power factor correction and boost circuit control chip U1. In this embodiment, the boost control chip U1 boosts the voltage after rectification by the input filter and rectifier module 100 to between 360VDC and 420VDC, and the boost voltage value is determined by the external resistor parameters of the boost control chip U1.

[0048] like Figure 4As shown in the embodiment of the present utility model, the power conversion module 300 is used to convert the first voltage output by the power boost module 200. The power conversion module 300 includes a power conversion chip U2 and a transformer T2. The power conversion chip U2 is connected to the power boost module 200 and the transformer T2 respectively. The output terminal of the transformer T2 is connected to the output module 400.

[0049] Furthermore, the power conversion chip U2 can be selected as the OBB2362IMP control chip U2. In this embodiment, the voltage boosted by the power boost module 200 is converted by the power conversion chip U2 and the high-frequency transformer T2 and then sent to the output module 400.

[0050] like Figure 4 As shown, in an embodiment of the present utility model, the output module 400 includes a connection terminal LOAD-IN / LOAD-OUT connected to a delay device with adjustable delay.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0052] In the description of this application, 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, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0053] The above provides a detailed description of an adjustable delay device according to an embodiment of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A delay device with adjustable delay, characterized in that, include: A delay module, used for connection to a load terminal, includes a three-terminal voltage regulator, a relay, a second electrolytic capacitor, a first voltage divider resistor, and a second voltage divider resistor. The first terminal of the three-terminal voltage regulator is connected to the first terminal of the relay coil. The second terminal of the three-terminal voltage regulator is connected to the positive terminal of the second electrolytic capacitor, the second terminal of the first voltage divider resistor, and the first terminal of the second voltage divider resistor. The second terminal of the first voltage divider resistor is connected to the second terminal of the relay coil. The contact point of the relay is connected to the load terminal. The second terminal of the second voltage divider resistor, the negative terminal of the second electrolytic capacitor, and the third terminal of the three-terminal voltage regulator are all grounded. The delay module is used to adjust the delay time of power supply from the load terminal to the load via the second electrolytic capacitor, and to control the operation of the relay via the three-terminal voltage regulator. The power supply module is used to provide operating voltage to the relay and the three-terminal voltage regulator. The input terminal of the power supply module is connected to the power supply terminal, and the output terminal of the power supply module is connected to the delay module.

2. The delay-adjustable delay device according to claim 1, characterized in that, The delay module further includes a first semiconductor element for discharging and a filter capacitor for filtering. The cathode of the first semiconductor element is connected to the second end of the coil of the relay, and the anode of the first semiconductor element is connected to the second end of the three-terminal voltage regulator and the first end of the filter capacitor. The second end of the filter capacitor is grounded.

3. The delay-adjustable delay device according to claim 1, characterized in that, The power module includes a first electrolytic capacitor, a current-limiting resistor, a bias resistor, a first Zener diode, a first switching transistor, and an energy storage capacitor. The anode of the first electrolytic capacitor and the first terminal of the current-limiting resistor are both connected to the power supply terminal. The second terminal of the current-limiting resistor and the first terminal of the bias resistor are respectively connected to the first terminal of the first switching transistor. The second terminal of the first switching transistor is connected to the first terminal of the energy storage capacitor, and the connection point is used as the output terminal of the power module. The third terminal of the first switching transistor is connected to the second terminal of the bias resistor and the cathode of the first Zener diode. The anode of the first Zener diode, the second terminal of the first electrolytic capacitor, and the second terminal of the energy storage capacitor are all grounded.

4. The time-adjustable delay device according to any one of claims 1-3, characterized in that, A first resistor is connected in series between the first terminal of the three-terminal voltage regulator and the first terminal of the relay coil.

5. A power supply drive system with output delay function, comprising an input filtering and rectification module, a power boost module, a power conversion module, and an output module connected in sequence, characterized in that, The output module is connected to the delay-adjustable delay device as described in any one of claims 1-4 to adjust the delay time of the output module's power supply to the load.

6. The power supply drive system with output delay function according to claim 5, characterized in that, It includes a fast start module, the input of which is connected to the output of the input filter and rectifier module, and the output of which is connected to the power boost module and the power conversion module.

7. The power supply drive system with output delay function according to claim 6, characterized in that, The fast-start module includes a second switching transistor, a third switching transistor, a second Zener diode, a second semiconductor element, and a second capacitor. The first terminal of the second switching transistor is connected to the output terminal of the input filter and rectifier module, the cathode of the second Zener diode, and the third terminal of the third switching transistor. The first terminal of the third switching transistor is connected to the output terminal of the input filter and rectifier module. The second terminal of the second switching transistor is connected to the power conversion module. The second terminal of the third switching transistor is connected to the first terminal of the second semiconductor element. The second terminal of the second semiconductor element is connected to the first terminal of the second capacitor and the power boost module. The second terminal of the second capacitor, the anode of the second Zener diode, and the third terminal of the second switching transistor are all grounded.

8. The power supply drive system with output delay function according to claim 5, characterized in that, The power boost module is used to boost the voltage output by the input filter and rectifier module to a first voltage. The power boost module includes a boost control chip, which is connected to both the input filter and rectifier module and the power conversion module.

9. The power supply drive system with output delay function according to claim 5, characterized in that, The power conversion module is used to convert the first voltage output by the power boost module. The power conversion module includes a power conversion chip and a transformer. The power conversion chip is connected to the power boost module and the transformer respectively. The output terminal of the transformer is connected to the output module.

10. The power supply drive system with output delay function according to claim 5, characterized in that, The output module includes a connection terminal that is connected to the delay-adjustable delay device.

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