A New Type of DC-DC Secondary Power Converter

Abstract

The present invention discloses a novel DC-DC secondary power converter, which relates to the technical field of electric power equipment, and includes a housing, wherein the housing includes a mounting bottom shell, the mounting bottom shell is set to be open on the left side, a PCB circuit board is fixedly installed inside the mounting bottom shell, a control panel and a junction box are fixedly installed on the front and rear sides of the mounting bottom shell respectively, a heat dissipation component is fixedly installed on the right side of the mounting bottom shell, and a dust screen is movably installed on the outside of the heat dissipation component. When the housing needs to be opened for inspection and maintenance, the present invention can be opened by twisting two hand screws located on the upper right side of the mounting bottom shell, and the hand screws are unscrewed from the fixing holes to disengage the upper cover from the engagement boss, and the upper cover is rotated to the left side to open by rotating it outward along the connecting axis, so as to facilitate the exposure of the electrical components inside the mounting bottom shell, thereby facilitating the opening and closing of the upper cover, while expanding the operable space to facilitate inspection and maintenance work.

Description

Technical Field

[0001] The invention relates to the technical field of power equipment, and in particular to a novel DC-DC secondary power converter. Background Art

[0002] A DC / DC secondary power converter is a voltage converter that effectively outputs a fixed voltage after converting the input voltage. It uses a switching power supply chip, which utilizes the energy storage characteristics of capacitors and inductors, and performs high-frequency switching through a controllable switch (MOSFET, etc.) to store the input electrical energy in the capacitor (inductor). When the switch is disconnected, the electrical energy is released to the load to provide energy.

[0003] The existing new DC-DC secondary power converter usually installs various electronic components in a shell for use. The shell is usually fixed with bolts. During maintenance, all bolts need to be removed to remove the shell cover, which is troublesome and inconvenient. At the same time, the DC-DC secondary power converter usually dissipates heat through an internal cooling fan when in use, and blocks external dust by setting a dustproof net. However, dust is easily attached to the dustproof net after long-term use, affecting the air intake, and the heat dissipation effect of only using the cooling fan is not good. Summary of the invention

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A novel DC-DC secondary power converter comprises a shell, wherein the shell comprises a mounting bottom shell, the mounting bottom shell is set with an opening on the left side, a PCB circuit board is fixedly mounted inside the mounting bottom shell, a control panel and a junction box are fixedly mounted on the front and rear sides of the mounting bottom shell respectively, a heat dissipation component is fixedly mounted on the right side of the mounting bottom shell, a dust screen is movably mounted on the outer side of the heat dissipation component, a connecting shaft is movably mounted on the left side of the mounting bottom shell, an upper cover is movably hinged on the outer side of the connecting shaft, a clamping boss is fixedly connected to the right side of the top of the mounting bottom shell, corresponding fixing holes are opened inside the clamping boss and the upper cover, and a hand screw located in the fixing hole is threadedly mounted on the outer side of the upper cover.

[0006] A further improvement of the technical solution of the present invention is that: the heat dissipation assembly includes a frame, the frame is fixedly installed on the right side of the inside of the installation bottom shell, an intake fan is fixedly installed inside the frame, a guide groove is opened on the upper side of the outer side of the frame, a rotating shaft is rotatably installed inside the frame, a reciprocating screw is rotatably installed inside the guide groove, the rear ends of the rotating shaft and the reciprocating screw are fixedly connected to a synchronous wheel located inside the frame, a synchronous belt is movably installed outside the synchronous wheel, a transmission gear is fixedly installed outside the rotating shaft and the output shaft of the intake fan, a cooling air duct is fixedly installed on the inner side of the frame, and the outer side of the reciprocating screw is threadedly connected to a movable rod located outside the dustproof net.

[0007] A further improvement of the technical solution of the present invention is that the cooling air duct includes a channel body, a through groove is opened inside the channel body, a semiconductor refrigeration plate and a heat-conducting metal plate attached to the front side of the semiconductor refrigeration plate are fixedly installed on the rear side of the channel body, and a partition is fixedly connected to the inside of the channel body.

[0008] A further improvement of the technical solution of the present invention is that a slot is provided on the top of the mounting bottom shell, and a sealing strip is movably connected inside the slot.

[0009] A further improvement of the technical solution of the present invention is that: the dustproof net is fixedly installed on the outside of the frame, and the movable rod is arranged on the outside of the dustproof net.

[0010] A further improvement of the technical solution of the present invention is that a sponge brush that fits the outside of the dustproof net is fixedly installed on the inner side of the movable rod.

[0011] A further improvement of the technical solution of the present invention is that: an opening corresponding to the semiconductor refrigeration plate is arranged on the rear side of the installation bottom shell, and the rear side of the semiconductor refrigeration plate is arranged outside the installation bottom shell.

[0012] A further improvement of the technical solution of the present invention is that the temperature-conducting metal plate is arranged inside the channel body.

[0013] A further improvement of the technical solution of the present invention is that the partition is arranged in a "V" shape, and the front side of the channel body is arranged to be open toward the PCB circuit board.

[0014] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0015] 1. The present invention provides a novel DC-DC secondary power converter. When the shell needs to be opened for inspection and maintenance, the upper cover is disconnected from the engaging boss by screwing two hand screws located on the upper right side of the mounting bottom shell and unscrewing the hand screws from the fixing holes. The upper cover is rotated outward along the connecting axis to the left side to open the upper cover, so that the electrical components inside the mounting bottom shell are exposed, and the opening and closing of the upper cover are facilitated. At the same time, the operable space is expanded, which is convenient for inspection and maintenance work.

[0016] 2. The present invention provides a novel DC-DC secondary power converter, in which a transmission gear meshing with a rotating shaft rotatably installed in a frame is arranged outside the output shaft of the air inlet fan to drive the rotating shaft to rotate, and the reciprocating screw is driven to rotate by a synchronous wheel and a synchronous belt at the end of the rotating shaft and the reciprocating screw. The rotation of the reciprocating screw drives the movable rod to slide back and forth in the guide groove to sweep away the dust attached to the outside of the dustproof net, thereby avoiding the dust attached to the outside of the dustproof net for a long time and affecting the air intake, thereby ensuring the heat dissipation effect.

[0017] 3. The present invention provides a novel DC-DC secondary power converter, which sucks air into the channel body through an inlet fan, and a powered semiconductor refrigeration plate adheres to one side of the channel body to generate cold air, which is evenly heated by a heat-conducting metal plate. The air enters the channel body, is guided by a partition, blows through the surface of the heat-conducting metal plate to cool down, and then is blown into the installation base shell through an opening on the front side of the channel body toward the PCB circuit board part to perform heat exchange and neutralize the temperature and dissipate heat, thereby improving the heat dissipation effect on the components in the installation base shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a novel DC-DC secondary power converter of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the housing of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the fixing hole of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure explosion of the heat dissipation assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure explosion of the cooling air duct of the present invention;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the cooling air duct of the present invention.

[0024] In the figure: 1. shell; 11. installation base shell; 12. connecting shaft; 13. upper cover; 14. slot; 15. sealing strip; 16. snap-fit ​​boss; 17. fixing hole; 18. hand screw; 2. PCB circuit board; 3. control panel; 4. junction box; 5. heat dissipation component; 51. frame; 52. air inlet fan; 53. guide groove; 54. rotating shaft; 55. reciprocating screw; 56. synchronous wheel; 57. synchronous belt; 58. transmission gear; 59. cooling air duct; 591. channel body; 592. through groove; 593. semiconductor refrigeration plate; 594. thermal conductive metal plate; 595. partition; 510. movable rod; 6. dustproof net. DETAILED DESCRIPTION

[0025] like Figures 1 to 6 As shown, the present invention provides a novel DC-DC secondary power converter, including a shell 1, the shell 1 includes a mounting bottom shell 11, the mounting bottom shell 11 is set to be open on the left side, a PCB circuit board 2 is fixedly installed inside the mounting bottom shell 11, a control panel 3 and a junction box 4 are fixedly installed on the front and rear sides of the mounting bottom shell 11 respectively, a heat dissipation component 5 is fixedly installed on the right side of the mounting bottom shell 11, a dustproof net 6 is movably installed on the outer side of the heat dissipation component 5, a connecting shaft 12 is movably installed on the left side of the mounting bottom shell 11, an upper cover 13 is movably hinged on the outer side of the connecting shaft 12, a clamping boss 16 is fixedly connected to the right side of the top of the mounting bottom shell 11, and corresponding fixing holes 17 are opened inside the clamping boss 16 and the upper cover 13, and a hand screw 18 located in the fixing hole 17 is threadedly installed on the outer side of the upper cover 13.

[0026] When the shell 1 needs to be opened for inspection and maintenance, the two hand screws 18 located on the upper right side of the mounting base 11 are turned, and the hand screws 18 are unscrewed from the fixing holes 17 to disengage the upper cover 13 from the connection with the engaging boss 16. The upper cover 13 is rotated outward along the connecting shaft 12 to the left to open it, so that the electrical components inside the mounting base 11 are exposed, and the upper cover 13 is opened and closed, which expands the operable space and facilitates maintenance work.

[0027] like Figure 4As shown, the heat dissipation component 5 includes a frame 51, which is fixedly installed on the right side of the inside of the mounting bottom shell 11, an intake fan 52 is fixedly installed inside the frame 51, a guide groove 53 is opened on the upper part of the outer side of the frame 51, a rotating shaft 54 ​​is rotatably installed inside the frame 51, a reciprocating screw 55 is rotatably installed inside the guide groove 53, the rear ends of the rotating shaft 54 ​​and the reciprocating screw 55 are fixedly connected to a synchronous wheel 56 located on the inner side of the frame 51, a synchronous belt 57 is movably installed outside the synchronous wheel 56, a transmission gear 58 is fixedly installed outside the rotating shaft 54 ​​and the output shaft of the intake fan 52, a cooling air duct 59 is fixedly installed on the inner side of the frame 51, and the outer side of the reciprocating screw 55 is threadedly connected to a movable rod 510 located on the outer side of the dustproof net 6.

[0028] When the fan 52 rotates, a transmission gear 58 is arranged outside its output shaft and meshes with the rotating shaft 54 ​​rotatably installed in the frame 51 to drive the rotating shaft 54 ​​to rotate. The transmission gear 58 is arranged by a bevel gear, and the reciprocating screw 55 is driven to rotate through the synchronous wheel 56 and the synchronous belt 57 at the end of the rotating shaft 54 ​​and the reciprocating screw 55. The rotation of the reciprocating screw 55 drives the movable rod 510 to slide back and forth along the guide groove 53 to sweep away the dust attached to the outside of the dustproof net 6, thereby avoiding the dust attached to the outside of the dustproof net 6 for a long time and affecting the air intake, thereby ensuring the heat dissipation effect.

[0029] like Figure 5 and Figure 6 As shown, the cooling air duct 59 includes a channel body 591, a through groove 592 is opened inside the channel body 591, a semiconductor refrigeration plate 593 and a heat-conducting metal plate 594 attached to the front side of the semiconductor refrigeration plate 593 are fixedly installed on the rear side of the channel body 591, and a partition 595 is fixedly connected to the inside of the channel body 591.

[0030] The air is sucked into the channel body 591 through the air inlet fan 52 via the dustproof net 6 to filter out external dust, and the powered semiconductor refrigeration plate 593 is attached to one side of the channel body 591 to generate cold air, and the temperature is evenly distributed through the heat-conducting metal plate 594. The air enters the channel body 591, is guided by the partition 595, blows through the surface of the heat-conducting metal plate 594 to cool down, and then is blown into the installation base shell 11 through the opening on the front side of the channel body 591 toward the PCB circuit board 2 for heat exchange and temperature dissipation. The incoming air is cooled to improve the heat dissipation effect on the components in the installation base shell 11.

[0031] like Figure 2 As shown, a slot 14 is provided on the top of the mounting bottom shell 11 , and a sealing strip 15 is movably engaged inside the slot 14 .

[0032] The sealing strip 15 clamped in the clamping groove 14 is compressed and deformed when the upper cover 13 and the mounting bottom shell 11 are fixed to ensure the sealing effect.

[0033] like Figure 4 As shown, the dustproof net 6 is fixedly installed on the outer side of the frame 51 , and the movable rod 510 is arranged on the outer side of the dustproof net 6 .

[0034] A sponge brush is fixedly mounted on the inner side of the movable rod 510 and is attached to the outside of the dustproof net 6 .

[0035] The dustproof net 6 is installed on the outside of the frame 51 and the movable rod 510 is located on the outside of the dustproof net 6. The movable rod 510 moves along the guide groove 53 to use a sponge brush to clean dust and impurities attached to the outside of the dustproof net 6 to ensure the air intake and heat dissipation effect.

[0036] like Figure 6 As shown, the rear side of the mounting bottom shell 11 is provided with an opening corresponding to the semiconductor refrigeration plate 593 , and the rear side of the semiconductor refrigeration plate 593 is located outside the mounting bottom shell 11 .

[0037] By installing the opening at the rear side of the bottom shell 11, the outer heating surface of the semiconductor refrigeration plate 593 is located outside the shell 1 to ensure heat dissipation.

[0038] The heat conducting metal plate 594 is disposed inside the channel body 591 .

[0039] The heat-conducting metal plate 594 is located inside the channel body 591, so that the incoming air contacts the heat-conducting metal plate 594. The cold energy generated by the semiconductor refrigeration plate 593 distributed by the heat-conducting metal plate 594 contacts the air for heat exchange to reduce the air temperature, and then is sent into the installation base shell 11 to improve the heat dissipation effect.

[0040] like Figure 6 As shown, the partition 595 is arranged in a "V" shape, and the front side of the channel body 591 is opened toward the PCB circuit board 2.

[0041] The "V"-shaped partition 595 can effectively guide the incoming air to contact the heat-conducting metal plate 594 for cooling. The opening on the front side of the channel body 591 facing the PCB circuit board 2 allows air to be blown toward the PCB circuit board 2 into the installation base 11, ensuring that the components on the PCB circuit board 2 are blown to dissipate heat.

[0042] The working principle of the new DC-DC secondary power converter is described in detail below.

[0043] like Figures 1 to 6As shown, the PCB circuit board 2, the control panel 3 and the junction box 4 are all installed inside the installation base shell 11 by using bolts, wherein the installation base shell 11 is provided with openings corresponding to the control panel 3 and the junction box 4 on the front and rear sides respectively so that they can be exposed to the outside of the installation base shell 11 for convenient operation, and the control is performed by operating the control panel 3, and an interface is provided behind the junction box 4 for convenient wiring, and the voltage conversion is performed by controlling the current or the current flow direction of the DC / DC converter element on the PCB circuit board 2, and the input signal is continuously digitally modulated by using the switching circuit technology to achieve an efficient voltage conversion effect, when it is necessary to open the shell 1 for inspection and maintenance, by screwing the two hand screws 18 located on the upper right side of the installation base shell 11, the hand screws 18 are unscrewed from the fixing holes 17, so that the upper cover 13 is disconnected from the engaging boss 16, and the upper cover 13 is rotated outward along the connecting shaft 12 so as to be rotated to the left to open, so that the electrical components inside the installation base shell 11 are conveniently exposed, the operable space is expanded, and the inspection work is convenient, and the components inside the shell 1 are opened when in use. The heat generated by the components needs to be dissipated. The air is sucked into the channel body 591 through the dustproof net 6 to filter out external dust, and the semiconductor refrigeration plate 593 is attached to one side of the channel body 591 to generate cold air. The temperature is evenly distributed through the heat-conducting metal plate 594. The air enters the channel body 591 and is guided by the partition 595 to blow through the surface of the heat-conducting metal plate 594 to cool down. After that, it is blown into the installation bottom shell 11 through the opening of the front side of the channel body 591 toward the PCB circuit board 2 for heat exchange and temperature dissipation. The heat dissipation fan installed on the inner side of the upper cover 13 is convenient for discharging hot air and improving the heat dissipation effect. When the air inlet fan 52 rotates, a transmission gear 58 is arranged outside its output shaft and meshes with the rotating shaft 54 ​​rotatably installed in the frame 51 to drive the rotating shaft 54 ​​to rotate. The rotating shaft 54 ​​and the synchronous wheel 56 and the synchronous belt 57 at the end of the reciprocating screw rod 55 drive the reciprocating screw rod 55 to rotate. The rotation of the reciprocating screw rod 55 drives the movable rod 510 to slide back and forth along the guide groove 53 to sweep away the dust attached to the outside of the dustproof net 6, thereby ensuring the air intake.

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A novel DC-DC secondary power converter, comprising a housing (1), characterized in that: The housing (1) comprises a mounting base shell (11), the mounting base shell (11) is open on the left side, a PCB circuit board (2) is fixedly mounted inside the mounting base shell (11), a control panel (3) and a junction box (4) are fixedly mounted on the front and rear sides of the mounting base shell (11), a heat dissipation component (5) is fixedly mounted on the right side of the mounting base shell (11), a dust screen (6) is movably mounted on the outer side of the heat dissipation component (5), a connecting shaft (12) is movably mounted on the left side of the mounting base shell (11), an upper cover (13) is movably hinged on the outer side of the connecting shaft (12), a locking boss (16) is fixedly connected on the right side of the top of the mounting base shell (11), corresponding fixing holes (17) are opened inside the locking boss (16) and the upper cover (13), and a hand screw (18) located in the fixing hole (17) is threadedly mounted on the outer side of the upper cover (13).

2. A novel DC-DC secondary power converter according to claim 1, characterized in that: The heat dissipation assembly (5) comprises a frame (51), the frame (51) is fixedly mounted on the right side of the inside of the mounting bottom shell (11), an inlet fan (52) is fixedly mounted inside the frame (51), a guide groove (53) is provided above the outer side of the frame (51), a rotating shaft (54) is rotatably mounted inside the frame (51), a reciprocating screw rod (55) is rotatably mounted inside the guide groove (53), the rotating shaft (54) and the reciprocating screw rod The rear end of the (55) is fixedly connected to a synchronous wheel (56) located on the inner side of the frame (51), and a synchronous belt (57) is movably installed on the outside of the synchronous wheel (56). A transmission gear (58) is fixedly installed on the outside of the rotating shaft (54) and the output shaft of the air inlet fan (52). A cooling air duct (59) is fixedly installed on the inner side of the frame (51), and the outer side of the reciprocating screw rod (55) is threadedly connected to a movable rod (510) located on the outer side of the dustproof net (6).

3. A novel DC-DC secondary power converter according to claim 2, characterized in that: The cooling air duct (59) includes a channel body (591), a through groove (592) is opened inside the channel body (591), a semiconductor refrigeration plate (593) and a heat-conducting metal plate (594) attached to the front side of the semiconductor refrigeration plate (593) are fixedly installed on the rear side of the channel body (591), and a partition (595) is fixedly connected to the inside of the channel body (591).

4. The novel DC-DC secondary power converter according to claim 1 is characterized in that: A slot (14) is provided on the top of the installation bottom shell (11), and a sealing strip (15) is movably engaged inside the slot (14).

5. A novel DC-DC secondary power converter according to claim 2, characterized in that: The dustproof net (6) is fixedly mounted on the outside of the frame (51), and the movable rod (510) is arranged on the outside of the dustproof net (6).

6. A novel DC-DC secondary power converter according to claim 5, characterized in that: A sponge brush that fits the outside of the dustproof net (6) is fixedly mounted on the inner side of the movable rod (510).

7. The novel DC-DC secondary power converter according to claim 3 is characterized in that: An opening corresponding to the semiconductor refrigeration plate (593) is arranged on the rear side of the installation base shell (11), and the rear side of the semiconductor refrigeration plate (593) is arranged outside the installation base shell (11).

8. The novel DC-DC secondary power converter according to claim 3 is characterized in that: The temperature-conducting metal plate (594) is disposed inside the channel body (591).

9. The novel DC-DC secondary power converter according to claim 3 is characterized in that: The partition (595) is arranged in a "V" shape, and the front side of the channel body (591) is arranged to be open toward the PCB circuit board (2).

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