Power module heat dissipation device of vehicle-mounted bidirectional charger

Abstract

The utility model belongs to the technical field of heat dissipation of vehicle-mounted chargers, and discloses a power module heat dissipation device of a vehicle-mounted bidirectional charger, which comprises a charger shell, a heat dissipation assembly, a first fan and a dustproof assembly, and is characterized in that the upper side and the lower side of the charger shell are respectively provided with a top heat dissipation fin and a bottom heat dissipation fin; ventilation openings are formed in the left side and the right side of the charger shell, a second fan is installed at the ventilation opening in one side, the heat dissipation assembly comprises a heat dissipation base, a water inlet, a water outlet and a heat conduction pipe, and the first fan is fixed to top heat dissipation fins. The heat exchange area is maximized, core heat can be rapidly taken away through flowing of liquid in the heat conduction pipe, meanwhile, the first draught fan and the second draught fan form three-dimensional airflow circulation, heat dissipation of the surface and the inner space of the shell is considered, the working temperature of the power module is effectively reduced, the heat dissipation efficiency of the vehicle-mounted charger is improved, and the vehicle-mounted charger is adaptive to the high-load working environment of the vehicle-mounted charger.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the heat dissipation technical field of vehicle charger, specifically a kind of power module heat sink device of vehicle bidirectional charger. BACKGROUND

[0002] The current new energy vehicle faces a big problem, the charging speed, increase the power of charger to improve the charging speed, the big restriction of power promotion is the increase of power consumption, and power consumption increase will inevitably generate a lot of heat. If electronic components cannot be effectively cooled, it will affect the output power, or even cause product failure and fire.

[0003] The heat dissipation device of high-power vehicle charger simultaneously disclosed (announced) as CN 215042156 U, including connecting plate, the lower side of connecting plate is the fin connecting surface, the upper side is the vehicle charger mounting surface, the fin is connected with fin connecting surface, the fin is multiple, and is arranged on the fin connecting surface with interval, the adjacent fins form a heat dissipation channel, the upper side of vehicle charger mounting surface is equipped with shell, and shell and vehicle charger mounting surface form a sealed space, the lower side of fin connecting surface is equipped with baffle except one side of heat dissipation channel, and the baffle on the other side of heat dissipation channel is equipped with fan, and the direction of fan is towards heat dissipation channel;

[0004] The heat dissipation device of high-power vehicle charger in the above-mentioned process, adopts single heat dissipation mode, and the heat exchange area is limited and the heat dissipation uniformity is poor, it is difficult to quickly reduce the core temperature, and cannot adapt to the demand of vehicle high load work;The dust, silt in vehicle environment is easy to enter the shell through the air vent, not only affects the heat dissipation efficiency, but also leads to the increase of failure rate, and affects the reliability and service life of charger.

[0005] Therefore, a kind of power module heat sink device of vehicle bidirectional charger is provided for the above-mentioned problems. Utility model content

[0006] To solve the problems presented in the above background art, the utility model provides a kind of power module heat sink device of vehicle bidirectional charger, with the three-dimensional air circulation formed by heat dissipation assembly and top, second fan, improve the heat dissipation efficiency of vehicle charger to adapt to high load working condition, simultaneously realize the sealing protection of air vent by the help of double-shaft motor driving dustproof cover plate overturning, block impurities to enter the shell interior, reduce the failure rate.

[0007] To achieve the above object, the utility model provides the following technical scheme: a power module heat abstractor of vehicle-mounted bidirectional charger, including charger shell, heat abstractor component, first fan and dustproof component, the upside and downside of charger shell is provided with top heat dissipation fin and bottom heat dissipation fin respectively, the left and right sides of charger shell are provided with air vent, and one side air vent is installed with second fan, heat abstractor component includes heat dissipation base, water inlet, water outlet and heat pipe, first fan is fixed on top heat dissipation fin, dustproof component includes connecting shell, double -shaft motor, drive rod, rotary rod and dustproof cover.

[0008] Preferably, the heat dissipation base is fixed on the bottom of the charger shell by bolts, the heat pipe is arranged in the heat dissipation base, and the two ends of the heat pipe pass through the heat dissipation base and are connected with the water inlet and the water outlet respectively.

[0009] Preferably, the heat dissipation base is wrapped outside the bottom heat dissipation fin, and a sealing washer is arranged at the connection between the heat dissipation base and the charger shell.

[0010] Preferably, the bottom heat dissipation fin is provided with a plug hole matched with the heat pipe, and the heat pipe is arranged in the plug hole in a serpentine shape.

[0011] Preferably, the connecting shell is fixed on one side of the charger shell, the double-shaft motor is installed at the middle position of the inner cavity of the connecting shell, the two ends of the double-shaft motor are connected with the drive rod, the rotary rod is connected to the charger shell at a position corresponding to above the air vent, and one end of the dustproof cover is fixed on the rotary rod.

[0012] Preferably, the charger shell is provided with a mounting seat matched with the rotary rod, the rotary rod is rotatably connected in the mounting seat, and a driven gear is connected to the outside of the mounting seat at one end of the rotary rod.

[0013] Preferably, a driving gear is fixed to one end of the drive rod close to the rotary rod, and the drive rod is connected with the driven gear of the rotary rod through the driving gear.

[0014] Preferably, the dustproof cover is attached to the outside of the air vent, and the size of the dustproof cover is matched with the air vent.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] 1. The utility model discloses a serpentine heat pipe and the design of the plug-in of the bottom fin maximize the heat exchange area, the flow of the liquid in the heat pipe can quickly take away the core heat, and the first fan and the second fan form a three-dimensional air circulation, which takes into account the shell surface and the internal space heat dissipation, effectively reduces the working temperature of the power module, improves the heat dissipation efficiency of the vehicle-mounted charger, and adapts to the high-load working environment of the vehicle-mounted charger.

[0017] 2、The utility model discloses a double -shaft motor cooperation drive rod drives the rotation rod and dustproof cover plate to carry out the overturning, can carry out the sealing protection to the air vent when the charger stops using, prevents the impurity such as dust, silt and enters the inside of charger shell to cause the influence to internal circuit, reduces the failure incidence. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is charger shell structure schematic diagram of the utility model;

[0020] Figure 3 It is heat dissipation subassembly structure schematic diagram of the utility model;

[0021] Figure 4 It is dustproof subassembly structure schematic diagram of the utility model;

[0022] Figure 5 It is drive rod and rotation rod connection structure diagram of the utility model.

[0023] In the drawing: 1, charger shell;

[0024] 2, heat dissipation subassembly;21, heat dissipation base;22, water inlet;23, water outlet;24, heat pipe;

[0025] 3, first fan;

[0026] 4, dustproof subassembly;41, connecting shell;42, double -shaft motor;43, drive rod;44, rotation rod;45, dustproof cover plate;

[0027] 5, top heat dissipation fin;6, bottom heat dissipation fin;7, air vent;8, second fan;9, mounting seat;10, driven gear;11, driving gear. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] The embodiments of the utility model will be described below according to the whole structure.

[0030] As Figures 1 to 5As shown, the utility model provides a kind of power module heat sink of vehicle-mounted bidirectional charger, including charger shell 1, heat dissipation component 2, first fan 3 and dustproof component 4, and the upper and lower sides of charger shell 1 are respectively provided with top heat dissipation fin 5 and bottom heat dissipation fin 6, and fin is closely attached to the surface of charger shell 1 to realize heat conduction, and the left and right sides of charger shell 1 are provided with air vent 7, as air convection passage between inside and outside charger shell 1, and second fan 8 is installed at one side air vent 7, to provide power for air circulation, heat dissipation component 2 includes heat dissipation base 21, water inlet 22, water outlet 23 and heat pipe 24, first fan 3 is fixed on top heat dissipation fin 5, accelerates the air flow around top heat dissipation fin 5, and quickly carries away the heat on the surface of top heat dissipation fin 5, and dustproof component 4 includes connecting shell 41, double-shaft motor 42, drive rod 43, rotating rod 44 and dustproof cover plate 45, realizes air vent 7 protection when stopping.

[0031] Further in the embodiment, heat dissipation base 21 is fixed on the bottom of charger shell 1 by bolt, heat pipe 24 is arranged in heat dissipation base 21, and the two ends of heat pipe 24 pass through heat dissipation base 21 and are connected with water inlet 22 and water outlet 23 respectively, so that heat pipe 24 and heat dissipation base 21 can be maintained and repaired later.

[0032] Heat dissipation base 21 is wrapped outside bottom heat dissipation fin 6, sealing washer is arranged at the connecting place of heat dissipation base 21 and charger shell 1, plug hole matched with heat pipe 24 is formed on bottom heat dissipation fin 6, heat pipe 24 is arranged in plug hole in a serpentine mode, heat pipe 24 arranged in heat dissipation base 21 in a serpentine mode is inserted in the matched plug hole of bottom heat dissipation fin 6, the contact area of heat pipe 24 and bottom heat dissipation fin 6 is greatly increased, external cooling medium enters heat pipe 24 through water inlet 22, absorbs the heat conducted by bottom heat dissipation fin 6 in the flowing process along serpentine path, and then flows out from water outlet 23, to take out heat from the device, to form liquid cooling heat dissipation loop.

[0033] Connecting shell 41 is fixed on one side of charger shell 1, double-shaft motor 42 is installed at the middle position of the inner cavity of connecting shell 41, the two ends of double-shaft motor 42 are connected with drive rod 43, rotating rod 44 is connected on charger shell 1 at the position corresponding to the upper side of air vent 7, one end of dustproof cover plate 45 is fixed on rotating rod 44, rotating rod 44 is installed on charger shell 1 through bearing, and the installation position corresponds to the upper side of air vent 7.

[0034] The charging machine shell 1 is provided with a mounting seat 9 matched with the rotating rod 44, the rotating rod 44 is rotationally connected in the mounting seat 9, one end of the rotating rod 44 extends to the outside of the mounting seat 9 and is connected with a driven gear 10, one end of the driving rod 43 close to the rotating rod 44 is fixed with a driving gear 11, the driving rod 43 is meshed and connected with the driven gear 10 of the rotating rod 44 through the driving gear 11, after the double-shaft motor 42 is started, the driving rod 43 connected at both ends is synchronously rotated, the motor power is transmitted through the gear to drive the rotating rod 44 to rotate, the dust cover 45 is turned up and opened upward, the air vent 7 is exposed, and the airflow is ensured to pass smoothly.

[0035] The dust cover 45 is attached to the outside of the air vent 7, the dust cover 45 is matched with the size of the air vent 7, the inner surface of the dust cover 45 is closely attached to the outer edge of the air vent 7, and dust, sand, water vapor and other impurities in the vehicle-mounted environment are effectively blocked from entering the inside of the charging machine shell 1.

[0036] The working principle and process of the power module heat dissipation device of the vehicle-mounted bidirectional charging machine are as follows: the heat generated by the power module working in the charging machine is first transmitted to the charging machine shell 1, the charging machine shell 1 expands the heat dissipation area through the top heat dissipation fins 5 and the bottom heat dissipation fins 6 on the upper and lower sides, preliminarily diffuses the heat, reduces the surface temperature of the shell, and the heat dissipation base 21 fixed at the bottom of the charging machine shell 1 covers the bottom heat dissipation fins 6, the heat-conducting pipe 24 arranged in a serpentine shape in the inside of the heat dissipation base 21 is inserted into the matching insertion hole of the bottom heat dissipation fins 6, the contact area of the heat-conducting pipe 24 and the bottom heat dissipation fins 6 is greatly increased, the external cooling medium enters the heat-conducting pipe 24 through the water inlet 22, fully absorbs the heat conducted by the bottom heat dissipation fins 6 during the flowing process along the serpentine path, and then flows out from the water outlet 23, so as to take out the heat from the device and form a liquid cooling heat dissipation loop; after the first fan 3 fixed on the top heat dissipation fins 5 is started, the air flow around the top heat dissipation fins 5 is accelerated, the heat on the surface of the top heat dissipation fins 5 is quickly taken away, and the top heat dissipation efficiency is improved; meanwhile, the second fan 8 at the air vent 7 on one side of the charging machine shell 1 is started, a directional airflow is formed, the heat in the inside of the charging machine shell 1 is discharged through the air vent 7, the internal heat accumulation is avoided, the dustproof assembly 4 realizes the automatic opening and closing of the dust cover 45 through the gear transmission structure driven by the double-shaft motor 42, and the ventilation demand and dustproof function are considered; when the device starts heat dissipation and needs ventilation, after the double-shaft motor 42 is started, the driving rod 43 connected at both ends is synchronously rotated, the motor power is transmitted through the gear to drive the rotating rod 44 to rotate, the dust cover 45 is turned up and opened upward, the air vent 7 is exposed, and the airflow is ensured to pass smoothly; when the device stops working, the double-shaft motor 42 is reversed, the dust cover 45 is turned down and closed, is attached to the outside of the air vent 7, and blocks the dust and sundries from entering the inside of the shell, so as to protect the internal components.

[0037] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A power module heat dissipation device for an on-board bidirectional charger, comprising a charger housing (1), a heat dissipation component (2), a first fan (3), and a dustproof component (4), characterized in that: The charger housing (1) is provided with top heat dissipation fins (5) and bottom heat dissipation fins (6) on the upper and lower sides respectively. Ventilation openings (7) are provided on the left and right sides of the charger housing (1), and a second fan (8) is installed at one side of the ventilation opening (7). The heat dissipation assembly (2) includes a heat dissipation base (21), a water inlet (22), a water outlet (23) and a heat pipe (24). The first fan (3) is fixed on the top heat dissipation fins (5). The dustproof assembly (4) includes a connecting housing (41), a dual-axis motor (42), a drive rod (43), a rotating rod (44) and a dustproof cover plate (45).

2. The power module heat dissipation device for an on-board bidirectional charger according to claim 1, characterized in that: The heat dissipation base (21) is fixed to the bottom of the charger housing (1) by bolts. The heat conduction pipe (24) is set inside the heat dissipation base (21). The two ends of the heat conduction pipe (24) pass through the heat dissipation base (21) and are connected to the water inlet (22) and the water outlet (23) respectively.

3. The power module heat dissipation device for an on-board bidirectional charger according to claim 2, characterized in that: The heat dissipation base (21) covers the outside of the bottom heat dissipation fins (6), and a sealing gasket is provided at the connection between the heat dissipation base (21) and the charger housing (1).

4. The power module heat dissipation device for an on-board bidirectional charger according to claim 3, characterized in that: The bottom heat dissipation fins (6) are provided with insertion holes that match the heat pipes (24), and the heat pipes (24) are arranged in a serpentine pattern inside the insertion holes.

5. The power module heat dissipation device for an on-board bidirectional charger according to claim 4, characterized in that: The connecting housing (41) is fixed on one side of the charger housing (1). The dual-axis motor (42) is installed in the middle of the inner cavity of the connecting housing (41). The two ends of the dual-axis motor (42) are connected to the drive rod (43). The rotating rod (44) is connected to the charger housing (1) at the position corresponding to the vent (7). One end of the dust cover (45) is fixed on the rotating rod (44).

6. The power module heat dissipation device for an on-board bidirectional charger according to claim 5, characterized in that: The charger housing (1) is provided with a mounting base (9) that matches the rotating rod (44). The rotating rod (44) is rotatably connected in the mounting base (9). One end of the rotating rod (44) extends to the outside of the mounting base (9) and is connected to a driven gear (10).

7. The power module heat dissipation device for an on-board bidirectional charger according to claim 6, characterized in that: The drive rod (43) has a drive gear (11) fixed at one end near the rotating rod (44), and the drive rod (43) is meshed with the driven gear (10) of the rotating rod (44) through the drive gear (11).

8. The power module heat dissipation device for an on-board bidirectional charger according to claim 7, characterized in that: The dust cover (45) is attached to the outside of the vent (7), and the size of the dust cover (45) is adapted to the vent (7).

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