High-precision power supply based on digital control and regulation method

Abstract

The application relates to the technical field of digital power supply, and discloses a high-precision power supply body design and regulation and control technology based on digital control, which comprises a shell, a control panel is arranged at the front of the shell, an electric core is arranged on the inner wall of the shell, the electric core is electrically connected with the control panel, and a spreading mechanism is arranged on the inner wall of the shell; the spreading mechanism comprises a motor, the motor is fixedly connected with the inner wall of the shell, a connecting ring is fixedly connected on the driving shaft of the motor, an inner thread sleeve is fixedly connected on the outer arc surface of the connecting ring, a top rod is threadedly connected on the inner wall of the inner thread sleeve, a guide frame is fixedly connected on the inner wall of the shell, and the top rod is slidably connected with the inner wall of the guide frame. In the application, the spreading mechanism is arranged, so that the power supply can automatically open the active heat dissipation mechanism under a high-load state, the active heat dissipation mechanism is spread, and the heat dissipation grid is matched to cool and dissipate heat of the power supply under the high-load state.

Description

Technical Field

[0001] This invention relates to the field of digital power supply technology, specifically to a high-precision power supply and control method based on digital control. Background Technology

[0002] Digital power supplies are a new type of power system based on digital signal processing (DSP) and microcontroller (MCU) technologies, implementing power management and control through software programming, unlike the hardware circuit control methods of traditional analog power supplies. At its core, an analog-to-digital converter (ADC) collects output voltage, current, and other parameters in real time. After processing by a digital controller, pulse width modulation (PWM) and other technologies are used to adjust the operating state of power devices (such as MOSFETs and IGBTs), achieving functions such as voltage / current regulation, dynamic response optimization, and fault protection. Digital power supplies are widely used in data centers, communication base stations, industrial automation, and new energy fields. Especially in scenarios requiring precise power management, multi-mode switching, or intelligent monitoring, they have become the mainstream choice to replace traditional analog power supplies, driving the development of power technology towards higher efficiency, intelligence, and networking.

[0003] Existing digital power supplies rely heavily on integrated heat dissipation structures for cooling during operation. When the device enters high-speed charging and discharging mode, the heat generated per unit time increases exponentially. However, the heat conduction path of the integrated heat dissipation structure is long and the heat dissipation area is limited, resulting in heat dissipation efficiency that cannot match the heat generation power. This thermal imbalance causes heat to accumulate continuously inside the power supply, causing the temperature of core components to exceed the safety threshold. Under high temperature conditions, the on-resistance of semiconductor devices increases and their lifespan is shortened. The electrolyte of passive components such as capacitors evaporates more quickly, which may even cause physical damage such as PCB carbonization and solder joint cracking. At the same time, heat accumulation can also trigger the power supply's overheat protection mechanism, leading to output power derating or frequent shutdowns, which seriously affects the continuity and reliability of the equipment and may even cause systemic safety accidents. To address these issues, we propose a high-precision power supply and control method based on digital control. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a high-precision power supply and regulation method based on digital control. This solves the problem that existing digital power supplies can accumulate heat, trigger overheat protection mechanisms, and cause output power derating or frequent shutdowns, which seriously affect the continuity and reliability of equipment and may lead to systemic safety accidents.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a high-precision power supply and control method based on digital control, including a housing, a control panel installed at the front of the housing, a battery cell installed on the inner wall of the housing, the battery cell being electrically connected to the control panel, and an unfolding mechanism provided on the inner wall of the housing;

[0008] The unfolding mechanism includes a motor, which is fixedly connected to the inner wall of the outer shell. A connecting ring is fixedly connected to the drive shaft of the motor. An internally threaded sleeve is fixedly connected to the outer arc surface of the connecting ring. A push rod is threadedly connected to the inner wall of the internally threaded sleeve. A guide frame is fixedly connected to the inner wall of the outer shell. The push rod is slidably connected to the inner wall of the guide frame. A grating sensor is fixedly connected to the inner wall of the guide frame. A groove is formed on the outer arc surface of the push rod. A grating ruler adapted to the grating sensor is fixedly connected to the inner wall of the groove on the push rod.

[0009] The upper surface of the top rod is provided with an active heat dissipation mechanism for cooling the battery cell. The inner wall of the outer shell is fixedly connected with a temperature sensor for monitoring the battery cell temperature. The battery cell temperature collected by the temperature sensor is converted into a digital signal by an ADC and then input to the PID adjustment module of the digital controller together with the output signal of the current sensor. The controller optimizes the PWM duty cycle to ensure the accuracy of the output voltage while suppressing the problem of increased device loss caused by high temperature.

[0010] The active heat dissipation mechanism includes a cover plate, which is installed on the upper surface of the top rod. An air duct is fixedly connected to the lower surface of the cover plate. A bracket is fixedly connected to the inner wall of the air duct. A cooling fan is fixedly connected to the surface of the bracket. The power supply for the cooling fan is directly provided by the auxiliary power module of the power supply (such as a 5V / 12V linear regulator). The PWM control signal of the drive motor and the PWM signal of the main circuit share the same vehicle clock source to ensure that the heat dissipation intensity adjustment is synchronized with the power conversion rhythm. An isolation frame is fixedly connected to the inner wall of the air duct, and a partition is fixedly connected to the surface of the isolation frame.

[0011] The upper surface of the battery cell is fixedly connected to a heat dissipation fin, the inner wall of the air duct is fixedly connected to a power supply contact one, and the inner wall of the outer shell is fixedly connected to a power supply contact two that is compatible with the power supply contact one. The heat dissipation fin can guide the heat generated by the battery cell, thereby improving the heat dissipation effect of the cooling fan on the battery cell and enhancing the power supply's temperature control of the battery cell under high-speed charging and discharging conditions.

[0012] Preferably, the lower surface of the housing is fixedly connected to a support foot, and heat dissipation grilles are provided on both the left and right sides of the housing. The heat dissipation grilles are connected to the interior of the housing. The heat dissipation grilles enable the device to dissipate heat independently, so that the device can dissipate heat using its integrated heat dissipation structure under normal temperature conditions, thus ensuring the safety of the power supply in non-high-speed charging and discharging states.

[0013] Preferably, a positioning plate is fixedly connected to the inner wall of the outer shell, and the positioning plate is fixedly connected to the upper surface of the motor. A sliding groove is opened on the surface of the push rod, and a protrusion adapted to the sliding groove is provided on the inner wall of the guide frame. By using the cooperation of the sliding groove and the protrusion, the movement direction of the push rod can be guided, and the problem of the push rod not being able to unfold normally due to the synchronous rotation of the push rod with the internal threaded sleeve can be avoided, thereby ensuring the normal use of the push rod.

[0014] Preferably, the motor control panel is electrically connected, the grating sensor is electrically connected to the control panel, and the internal threaded sleeve is rotatably connected to the lower surface of the connecting ring. By using the cooperation of the grating sensor and the grating ruler, the movement distance of the push rod can be detected, so that the push rod can stop moving when it lifts the cover plate to a specified height, thereby ensuring that the upper air outlet of the air duct driven by the push rod is aligned with the heat dissipation fins.

[0015] Preferably, there are two air ducts, which are mirror images of each other with the transverse axis of the cover plate as the mirror axis. The air ducts are located inside the outer shell. By using the cooperation of the air ducts and the isolation frame, the airflow generated by the cooling fan can be separated and guided, so that the airflow can use the upper and lower air outlets to cool different areas.

[0016] Preferably, the partition is fixedly connected to the inner wall of the air duct, the cooling fan is electrically connected to power supply contact one, and power supply contact two is electrically connected to the control panel. The partition can separate the upper flow channel isolated by the isolation frame and the air duct, so that each cooling fan can use a separate flow channel, guide the airflow through the upper air outlet, and reduce the mutual interference between airflows.

[0017] Preferably, the inner wall of the top rod is provided with a locking mechanism, the locking mechanism including a pin, the pin being inserted into the inner wall of the top rod, the pin penetrating the lower surface of the cover plate, a limit frame being fixedly connected to the upper surface of the pin, the limit frame abutting against the upper surface of the cover plate, an installation cavity being formed on the upper surface of the pin, a connecting plate being slidably connected to the pin on the inner wall of the installation cavity, a locking pin being fixedly connected to the side surface of the connecting plate, a locking groove being formed on the inner wall of the top rod, and the locking pin being inserted into the inner wall of the locking groove;

[0018] A spring is fixedly connected to the side of the connecting plate away from the locking pin. The spring is fixedly connected to the inner wall of the mounting cavity. A pressure post is slidably connected to the inner wall of the mounting cavity. A pressing frame is fixedly connected to the lower surface of the pressure post. The pressing frame abuts against the upper surface of the connecting plate. A pressing block is fixedly connected to the upper surface of the pressure post. The pressing block is slidably connected to the inner wall of the mounting cavity and to the inner wall of the limiting frame. The elasticity of the spring can restrict the position of the connecting plate, so that the connecting plate can restrict the position of the locking pin under non-external force conditions and ensure that the locking pin can be stably inserted into the slot, thus locking the position of the locking pin.

[0019] Preferably, a constraint frame is fixedly connected to the surface of the pressure column, and the constraint frame is slidably connected to the inner wall of the mounting cavity. The surface of the locking pin is provided with a storage groove that is adapted to the pressing part of the pressing frame. The upper surface of the connecting plate is provided with a chamfer, and the lower surface of the pressing frame is provided with a chamfer. The constraint frame can be used to limit the movement distance of the constraint frame to ensure that the movement space of the pressure column is located within the mounting cavity.

[0020] Preferably, in step S1, when using a power supply, remove the connecting cable, insert one end of the connecting cable into the control panel connector, and the other end into the connector of the device to be powered. After completing the connection, turn on the switch on the control panel. After the switch is turned on, the battery cell supplies power to the device to be powered through the voltage regulator integrated on the control panel and the connecting cable. At the same time, the remaining battery cell power will be displayed on the display screen of the control panel. When the power supply is depleted and charging is required, insert the charging cable into the charging port on the control panel and insert the charging head into the power strip. Then, under the power supply of the power strip, the battery cell can be charged.

[0021] S2. During the charging and discharging process of the battery cell, the temperature sensor located inside the casing monitors the temperature of the battery cell in real time. When the detected battery cell temperature reaches the set threshold ±2℃, the temperature sensor, in conjunction with the control panel, controls the motor to work. The motor is powered on and rotates the connecting ring. The connecting ring rotates the internal threaded sleeve. The internal threaded sleeve engages with the push rod through the thread. Under the action of the guide frame, the push rod drives the grating ruler to move upward and pushes the cover plate. During the movement, the grating ruler, in conjunction with the grating sensor, measures the moving distance of the push rod. When the moving distance of the push rod reaches the designed spacing, the grating sensor, in conjunction with the control panel, shuts off the motor. At the same time, the connecting ring stops driving the internal threaded sleeve, the internal threaded sleeve stops engaging with the push rod, the push rod stops moving, and with the assistance of the internal threaded sleeve, the position of the unfolded cover plate is locked.

[0022] S3. When the cover plate moves, it pulls the air duct upwards, causing the cooling fan and power supply contact one to move. During this movement, power supply contact one comes into contact with power supply contact two. After power supply contact one and power supply contact two connect, power supply contact two, in conjunction with power supply contact one, supplies power to the cooling fan. The cooling fan then blows air into the air duct. Simultaneously, using the digital controller on the power supply unit, the output power is automatically reduced by Y% and the cooling fan speed is increased proportionally for every X°C increase in temperature. The air blown into the air duct is guided by the isolation frame and discharged from the two air outlets of the air duct. The airflow in the upper air outlet, under the action of the partition, passes through an independent channel. The airflow is guided by the air duct and blows towards the heat sink fins to cool the battery cell. The airflow in the lower exhaust vent blows directly onto the battery cell through the air duct to cool the battery cell in conjunction with the heat sink fins and the upper exhaust vent. When the temperature sensor detects that the battery cell temperature has dropped to the safe threshold ±2℃, the control panel controls the motor to work. The motor drives the connecting ring in reverse so that the internal threaded sleeve drives the push rod to reset through the thread. During the reset, the push rod pulls the cover plate to reset. The cover plate is forced to push the air duct, which pushes the cooling fan and power supply contact one. Power supply contact one moves away from power supply contact two and stops supplying power to the cooling fan. The cooling fan stops working and is retracted into the casing.

[0023] In summary, the technical effects and advantages of this invention are as follows:

[0024] 1. In this invention, by setting an unfolding mechanism, the power supply can automatically open the active heat dissipation mechanism under high load conditions, so that the active heat dissipation mechanism unfolds and works with the heat dissipation grille to cool down the power supply under high load conditions.

[0025] 2. In this invention, by setting an active heat dissipation mechanism, the power supply can cool its high-temperature area with the help of an additional heat dissipation structure under high load conditions. At the same time, by using an openable shielding structure, the contact area between the internal structure of the power supply and the external gas can be increased, effectively improving the temperature control effect of the power supply under high load conditions.

[0026] 3. In this invention, by setting a locking mechanism, users can quickly disassemble and install the active heat dissipation mechanism, making it convenient for users to disassemble and maintain the active heat dissipation mechanism. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the high-precision power supply and control method based on digital control of the present invention.

[0028] Figure 2 This is a front view of the high-precision power supply and control method based on digital control according to the present invention.

[0029] Figure 3This is a schematic diagram of the active heat dissipation unfolded state structure of the high-precision power supply and regulation method based on digital control of the present invention.

[0030] Figure 4 This is a partial structural schematic diagram of the high-precision power supply and control method based on digital control according to the present invention.

[0031] Figure 5 This is a schematic diagram of the internal structure of the high-precision power supply and regulation method based on digital control according to the present invention;

[0032] Figure 6 This is a schematic diagram of the unfolding mechanism of the high-precision power supply and control method based on digital control of the present invention.

[0033] Figure 7 This is a schematic diagram of the active heat dissipation mechanism structure of the high-precision power supply and regulation method based on digital control of the present invention.

[0034] Figure 8 This invention relates to a high-precision power supply and control method based on digital control. Figure 7 Schematic diagram of the structure at point A in the middle;

[0035] Figure 9 This is a schematic diagram of the active heat dissipation mechanism of the high-precision power supply and regulation method based on digital control of the present invention.

[0036] Figure 10 This is a schematic diagram of the locking mechanism structure of the high-precision power supply and regulation method based on digital control of the present invention.

[0037] Figure 11 This is a cross-sectional schematic diagram of the locking mechanism of the high-precision power supply and control method based on digital control of the present invention.

[0038] Figure 12 This invention relates to a high-precision power supply and control method based on digital control. Figure 11 Side view;

[0039] Figure 13 This is a flowchart of the high-precision power supply and control method based on digital control according to the present invention.

[0040] In the diagram: 1. Outer casing; 2. Control panel; 3. Support feet; 4. Heat dissipation grille; 5. Battery cell;

[0041] 6. Deployment mechanism; 61. Motor; 62. Positioning plate; 63. Connecting ring; 64. Internal threaded sleeve; 65. Push rod; 66. Guide frame; 67. Grating sensor; 68. Grating ruler; 69. Slide groove;

[0042] 7. Active cooling mechanism; 71. Cover plate; 72. Air duct; 73. Bracket; 74. Cooling fan; 75. Isolation frame; 76. Partition; 77. Heat dissipation fins; 78. Power supply contact one; 79. Power supply contact two;

[0043] 8. Locking mechanism; 81. Pin; 82. Limiting bracket; 83. Connecting plate; 84. Locking pin; 85. Spring; 86. Pressure column; 87. Pressing bracket; 88. Press block; 89. Constraint bracket;

[0044] 9. Temperature sensor. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] refer to Figures 1-13 The high-precision power supply and regulation method based on digital control shown includes a housing 1, a control panel 2 installed at the front of the housing 1, a battery cell 5 installed on the inner wall of the housing 1, the battery cell 5 being electrically connected to the control panel 2, and an unfolding mechanism 6 provided on the inner wall of the housing 1.

[0047] The unfolding mechanism 6 includes a motor 61, which is fixedly connected to the inner wall of the outer shell 1. A connecting ring 63 is fixedly connected to the drive shaft of the motor 61. An internally threaded sleeve 64 is fixedly connected to the outer arc surface of the connecting ring 63. A push rod 65 is threadedly connected to the inner wall of the internally threaded sleeve 64. A guide frame 66 is fixedly connected to the inner wall of the outer shell 1. The push rod 65 is slidably connected to the inner wall of the guide frame 66. A grating sensor 67 is fixedly connected to the inner wall of the guide frame 66. A groove is opened on the outer arc surface of the push rod 65. A grating ruler 68 adapted to the grating sensor 67 is fixedly connected to the inner wall of the groove of the push rod 65.

[0048] An active heat dissipation mechanism 7 for cooling the battery cell 5 is provided on the upper surface of the top rod 65. A temperature sensor 9 for monitoring the temperature of the battery cell 5 is fixedly connected to the inner wall of the outer shell 1. The temperature of the battery cell 5 collected by the temperature sensor 9 is converted into a digital signal by the ADC and input to the PID adjustment module of the digital controller together with the output signal of the current sensor. The controller optimizes the PWM duty cycle to ensure the accuracy of the output voltage while suppressing the problem of increased device loss caused by high temperature.

[0049] The active cooling mechanism 7 includes a cover plate 71, which is installed on the upper surface of the top rod 65. An air duct 72 is fixedly connected to the lower surface of the cover plate 71. A bracket 73 is fixedly connected to the inner wall of the air duct 72. A cooling fan 74 is fixedly connected to the surface of the bracket 73. The power supply of the cooling fan 74 is directly provided by the auxiliary power module of the power supply, such as a 5V / 12V linear regulator. The PWM control signal of the drive motor 61 and the PWM signal of the main circuit share the same vehicle clock source to ensure that the heat dissipation intensity adjustment and the power conversion rhythm are synchronized. An isolation frame 75 is fixedly connected to the inner wall of the air duct 72. A partition plate 76 is fixedly connected to the surface of the isolation frame 75.

[0050] A heat dissipation fin 77 is fixedly connected to the upper surface of the battery cell 5. A power supply contact 78 is fixedly connected to the inner wall of the air duct 72. A power supply contact 79 adapted to the power supply contact 78 is fixedly connected to the inner wall of the outer casing 1. The heat dissipation fin 77 can guide the heat generated by the battery cell 5, thereby improving the heat dissipation effect of the cooling fan 74 on the battery cell 5, so as to enhance the power supply's temperature control of the battery cell 5 under high-speed charging and discharging conditions.

[0051] The lower surface of the outer shell 1 is fixedly connected with a support foot 3, and heat dissipation grilles 4 are provided on both the left and right sides of the outer shell 1. The heat dissipation grilles 4 are connected to the interior of the outer shell 1. The heat dissipation grilles 4 can realize the device's independent heat dissipation, so that the device can dissipate heat using its integrated heat dissipation structure under normal heat rise conditions, ensuring the safety of the power supply in non-high-speed charging and discharging states.

[0052] The inner wall of the outer casing 1 is fixedly connected to a positioning plate 62, which is fixedly connected to the upper surface of the motor 61. The surface of the push rod 65 is provided with a sliding groove 69, and the inner wall of the guide frame 66 is provided with a protrusion that matches the sliding groove 69. By using the cooperation of the sliding groove 69 and the protrusion, the movement direction of the push rod 65 can be guided, and the problem of the push rod 65 not being able to unfold properly is avoided by rotating synchronously with the internal threaded sleeve 64. This ensures the normal use of the push rod 65.

[0053] The motor 61 is electrically connected to the control panel 2, the grating sensor 67 is electrically connected to the control panel 2, and the internal threaded sleeve 64 is rotatably connected to the lower surface of the connecting ring 63. With the cooperation of the grating sensor 67 and the grating ruler 68, the movement distance of the push rod 65 can be detected so that the push rod 65 can stop moving when it lifts the cover plate 71 to a specified height, thereby ensuring that the upper air outlet of the air duct 72 driven by the push rod 65 is aligned with the heat dissipation fins 77.

[0054] There are two air ducts 72. The two air ducts 72 are set in a mirror image with the transverse axis of the cover plate 71 as the mirror axis. The air ducts 72 are located inside the outer shell 1. By using the cooperation of the air ducts 72 and the isolation frame 75, the airflow generated by the cooling fan 74 can be separated and guided, so that the airflow can use the upper and lower air outlets to cool different areas.

[0055] The partition 76 is fixedly connected to the inner wall of the air duct 72, the cooling fan 74 is electrically connected to the power supply contact 1 78, and the power supply contact 2 79 is electrically connected to the control panel 2. The partition 76 can separate the upper flow channel isolated by the isolation frame 75 and the air duct 72, so that each cooling fan 74 can use a separate flow channel to guide the airflow through the upper air outlet and reduce the mutual interference between airflows.

[0056] The inner wall of the top rod 65 is provided with a locking mechanism 8, which includes a pin 81. The pin 81 is inserted into the inner wall of the top rod 65 and passes through the lower surface of the cover plate 71. The upper surface of the pin 81 is fixedly connected to a limit frame 82, which abuts against the upper surface of the cover plate 71. The upper surface of the pin 81 has an installation cavity. The pin 81 is slidably connected to a connecting plate 83 on the inner wall of the installation cavity. The side surface of the connecting plate 83 is fixedly connected to a locking pin 84. The inner wall of the top rod 65 has a locking groove, and the locking pin 84 is inserted into the inner wall of the locking groove.

[0057] A spring 85 is fixedly connected to the side of the connecting plate 83 away from the locking pin 84. The spring 85 is fixedly connected to the inner wall of the mounting cavity. The pin 81 is slidably connected to the pressure column 86 on the inner wall of the mounting cavity. The lower surface of the pressure column 86 is fixedly connected to the compression frame 87, which abuts against the upper surface of the connecting plate 83. The upper surface of the pressure column 86 is fixedly connected to the push block 88, which is slidably connected to the inner wall of the mounting cavity and to the inner wall of the limiting frame 82. The elasticity of the spring 85 can restrict the position of the connecting plate 83, so that the connecting plate 83 can restrict the position of the locking pin 84 under non-external force conditions, and ensure that the locking pin 84 can be stably inserted into the slot to lock the position of the pin 81.

[0058] Among them, the surface of the pressure column 86 is fixedly connected to the constraint frame 89, the constraint frame 89 is slidably connected to the inner wall of the mounting cavity, the surface of the locking pin 84 is provided with a storage groove that is adapted to the extrusion part of the extrusion frame 87, the upper surface of the connecting plate 83 is provided with a chamfer, the lower surface of the extrusion frame 87 is provided with a chamfer, and the movement distance of the constraint frame 89 can be limited by the constraint frame 89 to ensure that the movement space of the pressure column 86 is all within the mounting cavity.

[0059] Working principle of this invention: When using a power supply, take out the connecting cable, insert one end of the connecting cable into the connector of the control panel 2, and the other end into the connector of the device to be powered. After the connection is completed, turn on the switch on the control panel 2. After the switch is turned on, the battery cell 5 supplies power to the device to be powered through the voltage regulator integrated on the control panel 2 and the connecting cable. At the same time, the remaining power of the battery cell 5 will be displayed on the display screen of the control panel 2. When the power supply is depleted and charging is required, insert the charging cable into the charging port of the control panel 2 and insert the charging head into the power strip. Then, under the power supply of the power strip, the battery cell 5 can be charged.

[0060] During the charging and discharging process of battery cell 5, temperature sensor 9 located inside casing 1 monitors the temperature of battery cell 5 in real time. When the detected temperature of battery cell 5 reaches the set threshold ±2℃, temperature sensor 9, in conjunction with control panel 2, controls motor 61 to operate. Motor 61 is energized to rotate connecting ring 63, which in turn rotates internal threaded sleeve 64. Internal threaded sleeve 64 engages with push rod 65 through threads. Under the action of guide frame 66, push rod 65 drives grating ruler 68 to move upward and pushes cover plate 71. During the movement, grating ruler 68, in conjunction with grating sensor 67, moves push rod 65. The distance is measured. When the moving distance of the push rod 65 reaches the designed spacing, the grating sensor 67, together with the control panel 2, shuts off the motor 61. At the same time, the connecting ring 63 stops driving the internal threaded sleeve 64. The internal threaded sleeve 64 stops meshing with the push rod 65, the push rod 65 stops moving, and with the assistance of the internal threaded sleeve 64, the position of the unfolded cover plate 71 is locked. By setting the unfolding mechanism 6, the power supply can automatically open the active heat dissipation mechanism 7 under high load conditions, so that the active heat dissipation mechanism 7 unfolds and works with the heat dissipation grille 4 to cool down the power supply under high load conditions.

[0061] When the cover plate 71 moves, it pulls the air duct 72 upwards. The air duct 72 drives the cooling fan 74 and power supply contact 78 to move. During the movement, power supply contact 78 contacts power supply contact 79. After power supply contact 78 and power supply contact 79 are connected, power supply contact 79, in conjunction with power supply contact 78, supplies power to the cooling fan 74. The cooling fan 74 is powered on and blows air into the air duct 72. At the same time, using the digital controller on the power supply body, when the temperature rises by X℃, the output power is automatically reduced by Y%, and the speed of the cooling fan 74 is increased proportionally. The air blown into the air duct 72 is guided by the isolation frame 75 and discharged from the two air outlets of the air duct 72. The airflow in the upper air outlet, under the action of the partition 76, is guided by an independent channel to the heat sink fins 77, and works with the heat sink fins 77 to cool the battery cell 5. The airflow in the lower air outlet is directly blown to the battery cell 5 through the air duct 72 to cooperate with the cooling fins 77. The heat sink fins 77 and the upper air outlet cool the battery cell 5. When the temperature sensor 9 detects that the temperature of the battery cell 5 has dropped to the safe threshold ±2℃, the control panel 2 controls the motor 61 to work. The motor 61 drives the connecting ring 63 in reverse so that the internal threaded sleeve 64 drives the push rod 65 to reset through the thread. During the reset, the push rod 65 pulls the cover plate 71 to reset. The cover plate 71 is forced to push the air duct 72. The air duct 72 pushes the cooling fan 74 and the power supply contact 1 78. The power supply contact 1 78 moves away from the power supply contact 2 79 and stops supplying power to the cooling fan 74. The cooling fan 74 stops working and is retracted into the outer casing 1. By setting the active heat dissipation mechanism 7, the power supply can cool its own high-temperature area with the help of the additional heat dissipation structure under high load. At the same time, the openable shielding structure can increase the contact area between the internal structure of the power supply and the external air, effectively improving the temperature control effect of the power supply under high load.

[0062] When the user needs to disassemble and maintain the active cooling mechanism 7, hook the constraint frame 89 with your finger and push the button 88 downwards. The button 88, in conjunction with the pressure column 86, pushes the compression frame 87. Under the action of the compression part, the compression frame 87 pushes the connecting plate 83. The connecting plate 83 compresses the spring 85, and the spring 85 is deformed by compression. As the connecting plate 83 moves, it pulls the locking pin 84, and the locking pin 84 disengages from the slot. When the user can no longer push the button 88 downwards, the locking pin 84 completely disengages from the slot. Then, while keeping the button 88 pressed down, pull the constraint upwards. The bracket 89, with its restraint bracket 89 pulling the pin 81, gradually disengages from the top rod 65 under the user's operation. Then, following the above steps, the pins 81 are removed one by one. After all the pins 81 have been removed, the cover plate 71 is pulled upwards. The cover plate 71 can then cooperate with the air duct 72 to bring the cooling fan 74 and other components out of the outer casing 1. When the active cooling mechanism 7 is completely removed, it can be disassembled and maintained. By setting the locking mechanism 8, the user can quickly disassemble and install the active cooling mechanism 7, making it convenient for the user to disassemble and maintain the active cooling mechanism 7.

[0063] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. High precision power supply based on digital control, comprising a casing (1), characterized in that: The front of the shell (1) is provided with a control panel (2), the inner wall of the shell (1) is provided with an electric core (5), the electric core (5) is electrically connected with the control panel (2), and the inner wall of the shell (1) is provided with an unfolding mechanism (6). The unfolding mechanism (6) comprises a motor (61), the motor (61) is fixedly connected with the inner wall of the shell (1), a connecting ring (63) is fixedly connected on the driving shaft of the motor (61), an internally threaded sleeve (64) is fixedly connected on the outer arc surface of the connecting ring (63), a top rod (65) is threadedly connected on the inner wall of the internally threaded sleeve (64), a guide frame (66) is fixedly connected on the inner wall of the shell (1), the top rod (65) is slidably connected with the inner wall of the guide frame (66), an optical grating sensor (67) is fixedly connected on the inner wall of the guide frame (66), a recess is formed on the outer arc surface of the top rod (65), and an optical grating ruler (68) matched with the optical grating sensor (67) is fixedly connected on the inner wall of the recess. The top rod (65) is provided with an active heat dissipation mechanism (7) for cooling the electric core (5), and the inner wall of the shell (1) is fixedly connected with a temperature sensor (9) for monitoring the temperature of the electric core (5). The active heat dissipation mechanism (7) comprises a cover plate (71), the cover plate (71) is mounted on the upper surface of the top rod (65), the lower surface of the cover plate (71) is fixedly connected with an air duct (72), the inner wall of the air duct (72) is fixedly connected with a support (73), the surface of the support (73) is fixedly connected with a heat dissipation fan (74), the inner wall of the air duct (72) is fixedly connected with an isolation frame (75), and the surface of the isolation frame (75) is fixedly connected with a partition plate (76). The upper surface of the electric core (5) is fixedly connected with a heat dissipation fin (77), the inner wall of the air duct (72) is fixedly connected with a power supply contact one (78), and the inner wall of the shell (1) is fixedly connected with a power supply contact two (79) matched with the power supply contact one (78).

2. The digitally controlled, high precision power supply of claim 1, wherein: The lower surface of the shell (1) is fixedly connected with a supporting leg (3), the left and right sides of the shell (1) are both provided with a heat dissipation grille (4), and the heat dissipation grille (4) is communicated with the inside of the shell (1).

3. The digitally controlled, high precision power supply of claim 1, wherein: The inner wall of the shell (1) is fixedly connected with a positioning plate (62), the positioning plate (62) is fixedly connected with the upper surface of the motor (61), the surface of the top rod (65) is provided with a sliding groove (69), and the inner wall of the guide frame (66) is provided with a protruding block matched with the sliding groove (69).

4. The digitally controlled, high precision power supply of claim 1, wherein: The motor (61) is electrically connected with the control panel (2), the optical grating sensor (67) is electrically connected with the control panel (2), and the internally threaded sleeve (64) is rotatably connected with the lower surface of the connecting ring (63).

5. The digitally controlled, high precision power supply of claim 1, wherein: The number of the air ducts (72) is two, the two air ducts (72) are mirror image arranged with the transverse axis of the cover plate (71) as the mirror axis, and the air ducts (72) are located in the inside of the shell (1).

6. The digitally controlled, high precision power supply of claim 1, wherein: The partition plate (76) is fixedly connected with the inner wall of the air duct (72), the heat dissipation fan (74) is electrically connected with the first power supply contact (78), and the second power supply contact (79) is electrically connected with the control panel (2).

7. The digitally controlled, high precision power supply of claim 1, wherein: The inner wall of the top rod (65) is provided with a locking mechanism (8), the locking mechanism (8) comprises a latch (81), the latch (81) is inserted in the inner wall of the top rod (65), the latch (81) penetrates the lower surface of the cover plate (71), the upper surface of the latch (81) is fixedly connected with a limiting frame (82), the limiting frame (82) abuts with the upper surface of the cover plate (71), the upper surface of the latch (81) is provided with a mounting cavity, the inner wall of the mounting cavity is slidably connected with a connecting plate (83), the side surface of the connecting plate (83) is fixedly connected with a clamping pin (84), the inner wall of the top rod (65) is provided with a clamping groove, and the clamping pin (84) is inserted into the inner wall of the clamping groove; The side, away from the clamping pin (84), of the connecting plate (83) is fixedly connected with a spring (85), the spring (85) is fixedly connected with the inner wall of the mounting cavity, the inner wall of the mounting cavity is slidably connected with a pressing column (86), the lower surface of the pressing column (86) is fixedly connected with a pressing frame (87), the pressing frame (87) abuts with the upper surface of the connecting plate (83), the upper surface of the pressing column (86) is fixedly connected with a pressing block (88), the pressing block (88) is slidably connected with the inner wall of the mounting cavity, and the pressing block (88) is slidably connected with the inner wall of the limiting frame (82).

8. The digitally controlled, high precision power supply of claim 7, wherein: The surface of the pressing column (86) is fixedly connected with a constraint frame (89), the constraint frame (89) is slidably connected with the inner wall of the mounting cavity, the surface of the clamping pin (84) is provided with a receiving groove matched with the pressing part of the pressing frame (87), the upper surface of the connecting plate (83) is provided with a chamfer, and the lower surface of the pressing frame (87) is provided with a chamfer.

9. A control method based on the digital control-based high-precision power supply according to any one of claims 1-8, characterized in that: S1, when using the power supply to supply power, taking out the connecting line, inserting one end of the connecting line into the connector of the control panel (2), and the other end into the connector of the device to be powered, after connection, turning on the switch on the control panel (2), the battery (5) is connected to the device to be powered through the integrated voltage stabilizing mainboard on the control panel (2) and the connecting line, and the remaining power of the battery (5) is displayed on the display screen of the control panel (2); when the power supply is out of power and needs to be charged, insert the charging line into the charging port of the control panel (2), and insert the charging head into the power supply socket, then the battery (5) can be charged under the power supply of the socket. S2, during the charging and discharging of the battery cell (5), the temperature sensor (9) located in the shell (1) will monitor the temperature of the battery cell (5) in real time, when the detected temperature of the battery cell (5) reaches the set threshold ± 2℃, the temperature sensor (9) cooperates with the control panel (2) to control the motor (61) to work, the motor (61) is energized to rotate the adapter ring (63), the adapter ring (63) rotates the inner threaded sleeve (64), the inner threaded sleeve (64) is engaged with the top rod (65) through the thread, the top rod (65) drives the grating ruler (68) to move upward under the action of the guide frame (66), and pushes the cover plate (71), the grating ruler (68) moves in the process of cooperation with the grating sensor (67) to measure the moving distance of the top rod (65), when the moving distance of the top rod (65) reaches the designed interval, the grating sensor (67) cooperates with the control panel (2) to close the motor (61), at the same time, the adapter ring (63) stops driving the inner threaded sleeve (64), the inner threaded sleeve (64) stops engaging with the top rod (65), the top rod (65) stops moving, and the position of the unfolded cover plate (71) is locked under the assistance of the inner threaded sleeve (64); S3, when the cover plate (71) moves, the cover plate (71) pulls the air duct (72) upward, the air duct (72) drives the cooling fan (74) and the power supply contact one (78) to move, the power supply contact one (78) contacts the power supply contact two (79) in the process of moving, after the power supply contact one (78) and the power supply contact two (79) are connected, the power supply contact two (79) cooperates with the power supply contact one (78) to power the cooling fan (74), the cooling fan (74) is energized to work to blow air into the air duct (72), at the same time, the digital controller of the power supply body basis automatically reduces the output power by Y% and increases the rotating speed of the cooling fan (74) in proportion when the temperature increases by X℃; The air blown into the air duct (72) is guided by the isolation frame (75) and discharged from the two air outlets of the air duct (72), the airflow in the upper air outlet is guided to the cooling fin (77) through the independent channel under the action of the partition (76), and cooperates with the cooling fin (77) to cool the battery cell (5), the airflow in the lower air outlet directly blows to the battery cell (5) through the air duct (72), to cooperate with the cooling fin (77) and the upper air outlet to cool the battery cell (5); When the temperature sensor (9) detects that the temperature of the battery cell (5) is reduced to the safety threshold ± 2℃, the control panel (2) controls the motor (61) to work, the motor (61) drives the adapter ring (63) in reverse, so that the inner threaded sleeve (64) drives the top rod (65) to reset through the thread, the top rod (65) pulls the cover plate (71) to reset in the reset, the cover plate (71) is forced to push the air duct (72), the air duct (72) pushes the cooling fan (74) and the power supply contact one (78), the power supply contact one (78) moves away from the power supply contact two (79), and stops powering the cooling fan (74), the cooling fan (74) stops working and is retracted into the shell (1).

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