Vehicle-mounted phase-shifted full-bridge resonant converter

Abstract

The invention discloses a vehicle-mounted phase-shifted full-bridge resonant converter, and relates to the technical field of vehicle-mounted converters. Fins are installed on the top of the vehicle-mounted converter, a heat conduction aluminum plate is arranged in the vehicle-mounted converter, components of the vehicle-mounted converter are arranged on the inner side of the heat conduction aluminum plate, a gap is reserved between the heat conduction aluminum plate and the vehicle-mounted converter, and a ventilation opening is formed in one end of a bottom plate of each fin and communicated with the gap. The heat conduction aluminum plate is matched with the fins, the heat conduction aluminum plate rapidly conducts heat of components, the airflow grooves in the two sides of the heat conduction aluminum plate are matched with the air holes in the bottoms of the fins, cooling airflow evenly covers the peripheries of the components, the vortex-shaped flow guide plates extend the airflow path, the heat dissipation efficiency is improved, and the heat dissipation efficiency is improved. And the cold flow mechanism is matched to cool the airflow, so that the heat dissipation effect is further enhanced.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted converter technology, specifically to a vehicle-mounted phase-shifting full-bridge resonant converter. Background Technology

[0002] With the rapid development of the electric vehicle industry, the on-board phase-shifting full-bridge resonant converter, as a core component of the power system, is used to achieve efficient voltage conversion for on-board components. During the frequent voltage conversion process, and given the limited space in the on-board environment, the on-board phase-shifting full-bridge resonant converter will experience high-temperature heating. The existing heat dissipation method used in vehicle-mounted phase-shifted full-bridge resonant converters is mainly to install fins on the converter. This passive heat dissipation method is relatively simple. In addition, the fins are usually installed on the top of the vehicle-mounted phase-shifted full-bridge resonant converter, which leads to uneven heat dissipation.

[0003] To address the aforementioned problems, the inventors proposed an on-board phase-shifting full-bridge resonant converter. Summary of the Invention

[0004] To address the problem of overly simplistic heat dissipation in existing vehicle-mounted phase-shifted full-bridge resonant converters, the present invention aims to provide a vehicle-mounted phase-shifted full-bridge resonant converter.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a vehicle-mounted phase-shifting full-bridge resonant converter, including a vehicle-mounted converter and fins, wherein the fins are mounted on the top of the vehicle-mounted converter, a heat-conducting aluminum plate is disposed inside the vehicle-mounted converter, the components of the vehicle-mounted converter are disposed on the inner side of the heat-conducting aluminum plate, and a gap is left between the heat-conducting aluminum plate and the vehicle-mounted converter; The bottom plate of the fin has a ventilation opening at one end that communicates with the gap, and an exhaust port at the other end of the bottom plate of the fin. An airflow channel is connected between the ventilation opening and the exhaust port. A flow control mechanism is installed at the bottom of the vehicle-mounted converter. A temperature sensor is installed between the flow control mechanism and the inside of the vehicle-mounted converter. The flow control mechanism extends to the inside of the gap. One end of the flow control mechanism is connected to a vortex guide plate, and a cooling flow mechanism adapted to it is provided on the inner side of the vortex guide plate. The cooling flow mechanism is used to cool the airflow, and an air intake mechanism is connected to the outer wall of the vortex guide plate.

[0006] Preferably, a filter screen is connected to the inner wall of the airflow channel of several fins, and the filter screen is inclined on the inner wall of the exhaust port.

[0007] Preferably, the outer walls on both sides of the thermally conductive aluminum plate are provided with a plurality of airflow grooves.

[0008] Preferably, the air intake mechanism includes a rectangular shell, a micro motor, and a fan. The rectangular shell is fixedly connected to the bottom of the vehicle-mounted converter and communicates with a vortex guide plate. The micro motor is mounted on the central support of the rectangular shell, and the fan is connected to the output shaft of the micro motor.

[0009] Preferably, the bottom of the rectangular shell is connected to a pipe, and the inner side of the pipe is provided with a plurality of annular plates and arc-shaped ring filter screens. The plurality of annular plates and the plurality of arc-shaped ring filter screens are stacked and staggered to form a movable conical filter screen, wherein the annular plates are fixedly connected to the inner wall of the pipe.

[0010] Preferably, the top of the conical filter screen is rotatably connected to a rotating shaft, a first sphere is connected to the outer wall of the rotating shaft, and a plurality of second spheres are fixedly connected to the top of the conical filter screen. The second spheres collide and cooperate with the first spheres, and the rotating shaft is connected to a fan.

[0011] Preferably, the cooling mechanism includes a vortex hose and a micro pump. The vortex hose is disposed inside the vortex guide plate, the output end of the micro pump is connected to both ends of the vortex hose, and one end of the vortex hose extends to the outside of the vehicle-mounted converter.

[0012] Preferably, the flow control mechanism includes a ventilation duct, an electric telescopic rod, and a valve plate. One end of the ventilation duct is connected to the gap of the vehicle-mounted transducer, and the other end of the ventilation duct is connected to the vortex guide plate. The electric telescopic rod is installed at the bottom of the vehicle-mounted transducer. The valve plate is rotatably connected to the corner of the ventilation duct, and the output end of the electric telescopic rod is rotatably connected to one end of the valve plate.

[0013] Preferably, the bottom of the fin has a plurality of air holes, which are connected between the airflow channel and the inner side of the heat-conducting aluminum plate.

[0014] Preferably, the cooling flow mechanism is located at the bottom of the vehicle-mounted converter, and a partition is provided between the cooling flow mechanism and the components of the vehicle-mounted converter, with the cooling flow mechanism located below the partition.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes the combination of a heat-conducting aluminum plate and fins. The heat-conducting aluminum plate rapidly conducts heat from the components, while the airflow grooves on both sides, combined with the air holes at the bottom of the fins, ensure that the cooling airflow evenly covers the area around the components, avoiding any heat dissipation blind spots. The vortex guide plate extends the airflow path and, together with the cooling mechanism, cools the airflow, further enhancing the heat dissipation effect.

[0016] 2. This invention monitors the internal temperature of the converter in real time using a temperature sensor. The flow control mechanism adjusts the valve opening via an electric telescopic rod to change the ventilation volume. The output power of the micro motor and fan is converted based on the real-time monitoring of the converter's internal temperature by the temperature sensor. When the temperature is low, the air volume is reduced to save energy, and when the temperature is high, the air volume is increased to cool down quickly, thus balancing heat dissipation and energy efficiency.

[0017] 3. In this invention, airflow enters the vortex guide plate, the micro pump in the cooling mechanism is activated, and coolant is pre-injected into the vortex hose. The micro pump drives the coolant inside the vortex hose to circulate. The vortex hose is located inside the vortex guide plate, and the airflow is cooled through heat exchange, thereby reducing the airflow temperature and improving heat dissipation efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the fin structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the fins in this invention.

[0022] Figure 4 This is a schematic diagram of the vehicle-mounted converter and air intake mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the thermally conductive aluminum plate structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the vortex guide plate, cooling flow mechanism and flow control mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the air intake mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the micro motor and fan structure of the present invention.

[0027] Figure 9 This is a schematic diagram of the vortex guide plate and flow control mechanism of the present invention.

[0028] Figure 10 For the present invention Figure 9 A schematic diagram of the structure at point A in the middle.

[0029] Figure 11 This is a schematic diagram of the cold flow mechanism of the present invention.

[0030] Figure 12 This is a cross-sectional view of the arc-shaped ring filter screen of the present invention.

[0031] In the diagram: 1. Vehicle-mounted transducer; 2. Fins; 21. Vent; 22. Air hole; 23. Exhaust vent; 3. Intake mechanism; 31. Pipe; 32. Arc-shaped ring filter; 33. Rotating shaft; 34. First sphere; 35. Second sphere; 36. Annular plate; 37. Rectangular shell; 38. Micro motor; 39. Fan; 4. Filter; 5. Thermally conductive aluminum plate; 6. Vortex guide plate; 7. Cooling mechanism; 71. Vortex hose; 72. Micro pump; 8. Flow control mechanism; 81. Ventilation channel; 82. Electric telescopic rod; 83. Valve plate. Detailed Implementation

[0032] 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.

[0033] like Figure 1 - Figure 12 As shown, the present invention provides an on-board phase-shifting full-bridge resonant converter, including an on-board converter 1 and fins 2. The fins 2 are mounted on the top of the on-board converter 1. A heat-conducting aluminum plate 5 is disposed inside the on-board converter 1. The components of the on-board converter 1 are disposed on the inner side of the heat-conducting aluminum plate 5. A gap is left between the heat-conducting aluminum plate 5 and the on-board converter 1. The heat-conducting aluminum plate 5 conducts heat to the components, and the gap is used for external airflow to enter and circulate, and to exchange heat with the heat-conducting aluminum plate 5. A ventilation opening 21 is provided at one end of the bottom plate of the fin 2, which is connected to the gap. An exhaust port 23 is provided at the other end of the bottom plate of the fin 2. An airflow channel is connected between the ventilation opening 21 and the exhaust port 23. A flow control mechanism 8 is installed at the bottom of the vehicle-mounted converter 1. A temperature sensor is installed between the flow control mechanism 8 and the interior of the vehicle-mounted converter 1 to detect the internal temperature of the vehicle-mounted converter 1. The temperature sensor adopts an existing product that is compatible with the vehicle-mounted converter 1. The flow control mechanism 8 extends to the inside of the gap for flow control of external air entering. One end of the flow control mechanism 8 is connected to a vortex guide plate 6. A cooling flow mechanism 7 adapted to the inner side of the vortex guide plate 6 is provided. The cooling flow mechanism 7 is used to cool the airflow. An air intake mechanism 3 is connected to the outer wall of the vortex guide plate 6 for pumping gas into the interior of the vehicle-mounted converter 1.

[0034] Combination Figure 2 As shown, a filter screen 4 is connected to the inner wall of the airflow channel of several fins 2, and the filter screen 4 is inclined on the inner wall of the port of the exhaust port 23. The purpose of this design is to prevent external airflow and dust from entering through the port of the exhaust vent 23. The filter screen 4 is inclined on the inner wall of the port of the exhaust vent 23, forming an inclination angle and tilting inward. When the vehicle-mounted converter 1 is not working, it can effectively intercept external dust and reduce the amount of external dust adhering to the filter screen 4, thereby preventing dust from entering the interior of the vehicle-mounted converter 1.

[0035] Combination Figure 5 As shown, several airflow grooves are provided on the outer walls of both sides of the heat-conducting aluminum plate 5 to increase the heat exchange area.

[0036] Combination Figure 6 and Figure 8 As shown, the air intake mechanism 3 includes a rectangular shell 37, a micro motor 38, and a fan 39. The rectangular shell 37 is fixedly connected to the bottom of the vehicle-mounted converter 1. The rectangular shell 37 is connected to the vortex guide plate 6. The micro motor 38 is mounted on the middle bracket of the rectangular shell 37. The fan 39 is connected to the output shaft of the micro motor 38. The purpose of this configuration is that the output shaft of the micro motor 38 drives the fan 39 to rotate, thereby introducing external airflow into the interior of the vehicle-mounted converter 1. The rectangular housing 37 is used to support the micro motor 38 and the fan 39, and to guide the airflow.

[0037] Combination Figure 6 and Figure 7 As shown, the bottom of the rectangular shell 37 is connected to a pipe 31. Several annular plates 36 and arc-shaped ring filter screens 32 are arranged on the inner side of the pipe 31. The arc-shaped ring filter screens 32 are made of deformable material. Several annular plates 36 and several arc-shaped ring filter screens 32 are stacked and staggered to form a movable conical filter screen. The annular plates 36 are fixedly connected to the inner wall of the pipe 31. The purpose of this design is that the arc-shaped ring filter 32 filters dust from the airflow, while the movable cone filter allows the external airflow to converge and concentrate, and at the same time, it can move and shake.

[0038] Combination Figure 6 , Figure 7 and Figure 12As shown, a rotating shaft 33 is rotatably connected to the top of the conical filter screen, a first ball 34 is connected to the outer wall of the rotating shaft 33, and several second balls 35 are fixedly connected to the top of the conical filter screen. The second balls 35 collide and cooperate with the first balls 34, and the rotating shaft 33 is connected to the fan 39. The purpose of this arrangement is that when the fan 39 rotates, the fan 39 drives the rotating shaft 33 and the first ball 34 to rotate. The first ball 34 and the second ball 35 collide intermittently, shaking the conical filter screen, thereby enabling the conical filter screen to be shaken and cleaned, preventing clogging.

[0039] Combination Figure 11 and Figure 6 As shown, the cooling mechanism 7 includes a vortex hose 71 and a micro pump 72. The vortex hose 71 is disposed inside the vortex guide plate 6. The output end of the micro pump 72 is connected to both ends of the vortex hose 71. One end of the vortex hose 71 extends to the outside of the vehicle-mounted converter 1. The purpose of this configuration is to drive the vortex hose 71 to circulate through the output end of the micro pump 72.

[0040] Combination Figure 10 As shown, the flow control mechanism 8 includes a ventilation channel 81, an electric telescopic rod 82, and a valve plate 83. One end of the ventilation channel 81 is connected to the gap of the vehicle-mounted transducer 1, and the other end of the ventilation channel 81 is connected to the vortex guide plate 6. The electric telescopic rod 82 is installed at the bottom of the vehicle-mounted transducer 1. The valve plate 83 is rotatably connected to the corner of the ventilation channel 81. The output end of the electric telescopic rod 82 is rotatably connected to one end of the valve plate 83. The purpose of this configuration is that the output end of the electric telescopic rod 82 drives the valve plate 83 to rotate, thereby adjusting the flow rate of the ventilation channel 81.

[0041] Combination Figure 2 , Figure 3 , Figure 5 As shown, the bottom of the fin 2 has several air holes 22, which are connected between the airflow channel and the inner side of the heat-conducting aluminum plate 5. The purpose of this arrangement is that several vents 22 are used to allow heat to circulate through the inner side of the heat-conducting aluminum plate 5, and the fins 2 can quickly carry away heat when air circulates inside.

[0042] The cooling mechanism 7 is located at the bottom of the vehicle-mounted converter 1. A partition is provided between the cooling mechanism 7 and the components of the vehicle-mounted converter 1. The cooling mechanism 7 is located below the partition. This is to cool and dissipate heat from the bottom of the vehicle-mounted converter 1.

[0043] Working principle: During the operation of the vehicle-mounted converter 1, the internal workings of the vehicle-mounted converter 1 are detected by a temperature sensor. The temperature sensor adopts an existing product that is compatible with the vehicle-mounted converter 1 to control whether the intake mechanism 3 and the flow control mechanism 8 are working, and to control the power used by the intake mechanism 3, thereby taking into account heat dissipation efficiency and energy saving. At the same time, this process plays a role in maintaining an appropriate internal working temperature of the vehicle-mounted converter 1, thereby preventing the operation of the vehicle-mounted converter 1 from being affected by excessively low temperature. When the operating temperature is low, the heat dissipation inside the vehicle converter 1 is achieved through the fins 2 and the heat-conducting aluminum plate 5, and several air holes 22 are used to allow heat to flow through the inside of the heat-conducting aluminum plate 5. When the temperature rises due to prolonged operation, the output shaft of the micro motor 38 drives the fan 39 to rotate, drawing external airflow into the interior of the vehicle-mounted converter 1. The rectangular shell 37 supports the micro motor 38 and the fan 39 and guides the airflow. The output end of the micro pump 72 drives the vortex hose 71 to circulate. The airflow and the vortex hose 71 exchange heat on the inner side of the vortex guide plate 6, cooling the incoming external air and thus improving the cooling effect. The output end of the electric telescopic rod 82 drives the valve plate 83 to rotate, thereby adjusting the flow rate of the ventilation channel 81. The output end of the electric telescopic rod 82 and the power of the micro motor 38 are adjusted. The internal temperature of the vehicle-mounted converter 1 is detected by the temperature sensor, and further adjustments are made accordingly. Those skilled in the art can understand and apply the use and installation of the temperature sensor of this invention and the vehicle-mounted converter 1.

[0044] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An on-board phase-shifting full-bridge resonant converter, comprising an on-board converter (1) and fins (2), characterized in that: The fins (2) are installed on the top of the vehicle-mounted converter (1). A heat-conducting aluminum plate (5) is provided inside the vehicle-mounted converter (1). The components of the vehicle-mounted converter (1) are located on the inner side of the heat-conducting aluminum plate (5). A gap is left between the heat-conducting aluminum plate (5) and the vehicle-mounted converter (1). The bottom plate of the fin (2) has a ventilation opening (21) at one end, which communicates with the gap. The bottom plate of the fin (2) has an exhaust port (23) at the other end. An airflow channel is connected between the ventilation opening (21) and the exhaust port (23). A flow control mechanism (8) is installed at the bottom of the vehicle-mounted converter (1). A temperature sensor is provided between the flow control mechanism (8) and the interior of the vehicle-mounted converter (1). The flow control mechanism (8) extends to the inside of the gap. One end of the flow control mechanism (8) is connected to a vortex guide plate (6), and a cooling flow mechanism (7) adapted to it is provided on the inner side of the vortex guide plate (6). The cooling flow mechanism (7) is used to cool the airflow, and an air intake mechanism (3) is connected to the outer wall of the vortex guide plate (6).

2. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, A filter screen (4) is connected to the inner wall of the airflow channel of several fins (2), and the filter screen (4) is inclined on the inner wall of the port of the exhaust port (23).

3. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, Several airflow grooves are provided on the outer walls of both sides of the thermally conductive aluminum plate (5).

4. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, The air intake mechanism (3) includes a rectangular shell (37), a micro motor (38) and a fan (39). The rectangular shell (37) is fixedly connected to the bottom of the vehicle converter (1). The rectangular shell (37) is connected to the vortex guide plate (6). The micro motor (38) is mounted on the middle bracket of the rectangular shell (37). The fan (39) is connected to the output shaft of the micro motor (38).

5. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 4, characterized in that, The bottom of the rectangular shell (37) is connected to a pipe (31). The inner side of the pipe (31) is provided with a number of annular plates (36) and arc-shaped ring filters (32). The number of annular plates (36) and arc-shaped ring filters (32) are stacked and staggered to form a movable conical filter. The annular plates (36) are fixedly connected to the inner wall of the pipe (31).

6. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 5, characterized in that, The top of the conical filter is rotatably connected to a rotating shaft (33), and a first sphere (34) is connected to the outer wall of the rotating shaft (33). Several second spheres (35) are fixedly connected to the top of the conical filter. The second spheres (35) collide with the first spheres (34). The rotating shaft (33) is connected to a fan (39).

7. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, The cooling mechanism (7) includes a vortex hose (71) and a micro pump (72). The vortex hose (71) is located inside the vortex guide plate (6). The output end of the micro pump (72) is connected to both ends of the vortex hose (71). One end of the vortex hose (71) extends to the outside of the vehicle-mounted converter (1).

8. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, The flow control mechanism (8) includes a ventilation channel (81), an electric telescopic rod (82), and a valve plate (83). One end of the ventilation channel (81) is connected to the gap of the vehicle-mounted converter (1), and the other end of the ventilation channel (81) is connected to the vortex guide plate (6). The electric telescopic rod (82) is installed at the bottom of the vehicle-mounted converter (1). The valve plate (83) is rotatably connected to the corner of the ventilation channel (81). The output end of the electric telescopic rod (82) is rotatably connected to the valve plate (83) at one end.

9. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, The bottom of the fin (2) is provided with a number of air holes (22), which are connected between the airflow channel and the inner side of the heat-conducting aluminum plate (5).

10. The vehicle-mounted phase-shifting full-bridge resonant converter as described in claim 1, characterized in that, The cooling flow mechanism (7) is located at the bottom of the vehicle-mounted converter (1). A partition is provided between the cooling flow mechanism (7) and the components of the vehicle-mounted converter (1). The cooling flow mechanism (7) is located below the partition.

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