Double-sided heat dissipation parking air conditioner controller

Abstract

The utility model belongs to the technical field of parking air conditioner controllers, and particularly relates to a double-face heat dissipation parking air conditioner controller which comprises a lower heat conduction shell, a circuit substrate and an upper heat conduction shell are sequentially positioned and connected to the lower heat conduction shell in a sleeved mode, and the outer side of the circuit substrate is connected with a plurality of MOS tubes through conductive pins. The inner side of the upper heat conduction shell and the inner side of the lower heat conduction shell are provided with heat conduction bosses corresponding to the MOS tubes, the MOS tubes are attached and fixed between the heat conduction bosses on the upper side and the heat conduction bosses on the lower side, and the circuit substrate is further electrically connected with a battery input interface and a battery output interface. According to the parking air conditioner controller, a double-face efficient heat dissipation mechanism is arranged for the heating element, the temperature rise of the heating element is greatly reduced, the equipment performance can be improved, the service life can be prolonged, and the parking air conditioner controller is compact in size and convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of parking air conditioner controller, specifically, relates to double -sided heat dissipation parking air conditioner controller. BACKGROUND

[0002] The working voltage of the parking air conditioner of the truck, the motor home and other vehicles on the market is generally 12V and 24V, and when the 1KW controller conversion drive air conditioner fan runs, the working current needs 40-80A. Such low-voltage large-current brushless controller must use multiple tubes in parallel, and because of high heat, a large radiator is needed.

[0003] In the patent file with the patent number CN202022231386.0 and the name "controller for parking air conditioner", the controller for parking air conditioner is disclosed, the heat transfer block is arranged on the other side of the PCB opposite to the heat generating device, and the heat transfer body is arranged between the heat transfer block and the inner wall of the shell, so that the heat of the heat generating device is transmitted to the shell through the heat transfer block and the heat transfer body, without arranging a large metal radiator on the side of the PCB where the heat generating device is installed, so that the occupied space thickness of the whole circuit board is reduced, and the volume of the shell is reduced, and the large metal radiator is saved.

[0004] Although the heat generating device of the above-mentioned parking air conditioner controller directly dissipates heat through the bottom shell, effectively reducing the occupied volume of the equipment, there are a large number of other devices on the PCB around the heat generating device, and the space is relatively closed, which can easily cause heat accumulation when the equipment runs for a long time under high load, accelerate the aging of electronic components, and even cause overheating damage.

[0005] In addition, the PCB needs to be installed and fixed by screwing the shell and the threaded hole, which is not convenient to assemble. UTILITY MODEL CONTENTS

[0006] In order to solve the problem of low heat dissipation efficiency of the heat generating device of the existing parking air conditioner controller, heat accumulation after long-time operation of the equipment, reduction of service life of electronic components on the circuit board, even overheating damage, and poor assembly of the circuit board and the controller shell, a double-sided heat dissipation parking air conditioner controller is provided.

[0007] The double-sided heat dissipation parking air conditioner controller comprises a lower heat conduction shell, a circuit board is sequentially positioned and connected on the lower heat conduction shell, and an upper heat conduction shell is sequentially positioned and connected on the circuit board, a plurality of MOS tubes are connected to the outer side of the circuit board through conductive pins, heat conduction bosses are arranged on the inner side of the upper heat conduction shell and the lower heat conduction shell corresponding to the MOS tubes, the MOS tubes are fixed between the upper and lower heat conduction bosses, and a battery input interface and an output interface are electrically connected on the circuit board.

[0008] Further, the circuit substrate is provided with an element power supply circuit, an MCU chip, a power circuit and a compressor driving circuit which are electrically connected with each other, the input end of the element power supply circuit is electrically connected with the battery input interface, the power circuit and the compressor driving circuit are electrically connected with the MOS tube through the conductive pin, and the output end of the compressor driving circuit is electrically connected with the output interface.

[0009] Further, the circuit substrate is provided with a communication module which is electrically connected with the element power supply circuit, the MCU chip and the communication interface.

[0010] Further, the battery input interface, the output interface and the communication interface are all mounted on the top outer side of the upper heat-conducting shell.

[0011] Further, a plurality of positioning holes are formed around the outer side of the circuit substrate, and a plurality of positioning columns which can be sleeved into the positioning holes are arranged on the inner top of the lower heat-conducting shell.

[0012] Further, a sleeving clamping seat is arranged on the top of the lower heat-conducting shell corresponding to the outer periphery of the upper heat-conducting shell, and the upper heat-conducting shell is mounted in the sleeving clamping seat.

[0013] Further, waterproof rubber strips are arranged on the outer side of the joint of the sleeving clamping seat, the battery input interface and the output interface.

[0014] Further, insulating heat-conducting soft pads are arranged between the MOS tube and the heat-conducting bosses on the upper and lower sides.

[0015] Further, a breathable hole is formed through the bottom of the lower heat-conducting shell, the breathable hole is communicated with a downward protruding horizontal air passage, and a shielding piece is arranged on the bottom of the horizontal air passage.

[0016] Further, a plurality of heat dissipation fins are arranged on the surfaces of the upper heat-conducting shell and the lower heat-conducting shell, and the upper heat-conducting shell and the lower heat-conducting shell are integrally formed with the heat-conducting bosses thereof.

[0017] The utility model discloses the advantages are in:

[0018] 1, the upper and lower sides of MOS tube are adhered heat dissipation mechanism, can inhibit element temperature rise greatly, improve the performance and operating stability of equipment.

[0019] 2, the main heating element is arranged on the outer side of the circuit substrate, and the influence on other circuit elements on the circuit substrate is small, so that overheating failure and damage of equipment elements can be avoided.

[0020] 3, directly use the shell as the heat dissipation element, and the equipment is small in size and low in manufacturing cost.

[0021] 4. The circuit board and the upper and lower shells can be directly buckled and fixed, so that the assembly is quick and convenient.

[0022] 5. The waterproof rubber strip at the top and the air vent hole at the bottom consider both the sealing performance and the air permeability. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Fig. 1 It is a structure diagram of the double-sided heat dissipation parking air conditioner controller;

[0025] Fig. 2 It is a structure diagram of the bottom of the double-sided heat dissipation parking air conditioner controller;

[0026] Fig. 3 It is an exploded structure diagram of the double-sided heat dissipation parking air conditioner controller;

[0027] Fig. 4 It is a vertical sectional structure diagram of the MOS tube of the double-sided heat dissipation parking air conditioner controller;

[0028] Fig. 5 It is a circuit principle diagram of the element power supply circuit and the MCU chip;

[0029] Fig. 6 It is a circuit principle diagram of the power circuit and the communication module;

[0030] Fig. 7 It is a circuit principle diagram of the compressor driving circuit.

[0031] IDENTIFICATION OF DRAWINGS

[0032] 1. The upper heat-conducting shell; 101, the battery input interface; 102, the output interface; 103, the communication interface; 2, the lower heat-conducting shell; 201, the positioning column; 202, the sleeve joint seat; 203, the air vent hole; 204, the horizontal air vent groove; 3, the circuit board; 301, the element power supply circuit; 302, the MCU chip; 303, the power circuit; 304, the compressor driving circuit; 305, the communication module; 306, the positioning hole; 4, the conductive pin; 5, the MOS tube; 6, the heat-conducting boss; 7, the waterproof rubber strip; 8, the insulating heat-conducting soft pad; 9, the heat dissipation fin. DETAILED DESCRIPTION

[0033] In order to solve the problem of the existing parking air conditioner controller, the heat dissipation structure of the heating device is not high in efficiency, heat accumulation is easy to cause after long time running of the equipment, the service life of the electronic elements on the circuit board is reduced, even overheating damage, the operation stability of the equipment needs to be improved, and the assembly of the circuit board and the controller shell is inconvenient, a double-sided heat dissipation parking air conditioner controller is provided.

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0035] It should be explained that the terms such as "inner", "middle" and "one" cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model. The change or adjustment of the relative relationship is also considered as the scope of the utility model without substantial change of the technical content, and it is described in advance.

[0036] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] As Figs. 1 to 7As shown, the embodiment provides a double-sided heat dissipation parking air conditioner controller, which comprises a lower heat-conducting shell 2, a circuit board 3 and an upper heat-conducting shell 1 are sequentially positioned on the lower heat-conducting shell 2, a plurality of MOS tubes 5 are connected to the outer side of the circuit board 3 through conductive pins 4, heat-conducting bosses 6 corresponding to the MOS tubes 5 are arranged on the inner sides of the upper heat-conducting shell 1 and the lower heat-conducting shell 2, the MOS tubes 5 are fixed between the heat-conducting bosses 6 on the upper and lower sides, and a battery input interface 101 and an output interface 102 are further electrically connected to the circuit board 3.

[0038] When the device is assembled, the circuit board 3 and the upper heat-conducting shell 1 are only needed to be assembled on the lower heat-conducting shell 2 from bottom to top, which is convenient and fast and can effectively save production cost.

[0039] When the device is running, the battery input interface 101 is connected to the vehicle-mounted battery (not marked in the figure), and the output interface 102 is connected to the vehicle-mounted air conditioner compressor (not marked in the figure), and the output interface 102 in the embodiment is a three-phase direct-current motor interface. When the MOS tubes 5 convert the power provided by the vehicle-mounted battery into 12V or 24V large-current power used by the air conditioner compressor, the heat generated by the MOS tubes 5 is conducted to the upper heat-conducting shell 1 and the lower heat-conducting shell 2 through the heat-conducting bosses 6 on the upper and lower sides and quickly dissipated to the outside, thereby achieving a strong heat dissipation effect.

[0040] It is worth mentioning that the upper heat-conducting shell 1, the lower heat-conducting shell 2 and the heat-conducting bosses 6 in the embodiment are all made of aluminum alloy for heat dissipation, which takes into account the structural strength and heat dissipation efficiency.

[0041] The circuit board 3 is provided with an element power supply circuit 301, an MCU chip 302, a power circuit 303 and a compressor driving circuit 304 which are electrically connected to each other, the input end of the element power supply circuit 301 is electrically connected to the battery input interface 101, the power circuit 303 and the compressor driving circuit 304 are electrically connected to the MOS tubes 5 through the conductive pins 4, and the output end of the compressor driving circuit 304 is electrically connected to the output interface 102.

[0042] In the embodiment, the element power supply circuit 301 uses U3213 and 78L05 in cooperation with peripheral elements to convert the power provided by the vehicle-mounted battery and supply it to other circuit elements for operation.

[0043] The MCU chip 302 can provide a center-aligned PWM signal output to the power circuit 303 to control the operation of the MOS tubes 5.

[0044] The half-bridge driving chip FD2103 on the power circuit 303 provides complementary symmetrical PWM driving waveforms.

[0045] The compressor driving circuit 304 further processes the current output by the power circuit 303 and then outputs it to the air conditioner compressor for operation.

[0046] The circuit board 3 is provided with a communication module 305, which is electrically connected to the element power supply circuit 301, the MCU chip 302 and the communication interface 103.

[0047] In this embodiment, the communication module 305 and the communication interface 103 adopt the commonly used RS485 format on the market, which is used for communication control between the MCU chip 302 and the control terminal such as the vehicle-mounted computer. The D-TVS on the communication module 305 can provide surge protection for the 485 bus.

[0048] The battery input interface 101, the output interface 102 and the communication interface 103 are all installed on the top outer side of the upper heat-conducting shell 1. The wiring port arranged on the top facilitates disassembly and maintenance. In this embodiment, the outer side of the joint between each interface and the upper heat-conducting shell 1 is provided with a waterproof rubber strip 7, which can prevent water droplets and other foreign matters from entering the circuit board 3 and causing equipment failure.

[0049] A plurality of positioning holes 306 are arranged around the outer side of the circuit board 3, and the inner top of the lower heat-conducting shell 2 is provided with a plurality of positioning columns 201 which can be sleeved into the positioning holes 306. The design of the positioning holes 306 cooperating with the positioning columns 201 can quickly butt joint the lower heat-conducting shell 2 and the circuit board 3 without parts, thereby reducing the difficulty of equipment assembly.

[0050] The top of the lower heat-conducting shell 2 is provided with a sleeving card seat 202 corresponding to the outer periphery of the upper heat-conducting shell 1, and the upper heat-conducting shell 1 is installed in the sleeving card seat 202. The upper heat-conducting shell 1 and the lower heat-conducting shell 2 also adopt the sleeving design without parts.

[0051] The outer side of the joint between the sleeving card seat 202, the battery input interface 101 and the output interface 102 is provided with a waterproof rubber strip 7. In this embodiment, the waterproof rubber strip 7 is uniformly and simultaneously applied to each joint on the upper side of the equipment, which can improve the connection stability and waterproof sealing performance, and has high assembly efficiency.

[0052] The MOS tube 5 and the heat-conducting bosses 6 on the upper and lower sides are both provided with insulating heat-conducting soft pads 8. Due to the dimensional tolerance of components, the material of elements and other factors, the MOS tube 5 and the heat-conducting bosses 6 often cannot be closely attached, and the heat-conducting bosses 6 made of metal material have the risk of electric conduction and leakage. Therefore, it is necessary to set the insulating heat-conducting soft pads 8 made of heat-conducting silica gel, imine film and other materials. In this embodiment, the MOS tube 5 is padded with heat-conducting silica gel and elastic silica gel on the top, so as to fill the gap and make the MOS tube 5 and the heat-conducting bosses 6 closely attached, and is padded with imine film on the bottom, so as to avoid direct hard contact between the bottom of the MOS tube 5 and the heat-conducting bosses 6 and wear and provide insulating heat-conducting effect. In addition, the upper heat-conducting shell 1 and the lower heat-conducting shell 2 are also connected by screws in this embodiment, so as to further press the MOS tube 5 and the heat-conducting bosses 6.

[0053] The bottom of the lower heat-conducting shell 2 is provided with a gas-permeable hole 203, which is communicated with a downwardly protruding horizontal air passage 204, and the bottom of the horizontal air passage 204 is provided with a shielding sheet (not shown in the figure). Since the gas-permeable hole 203 is downward, foreign matter can be prevented from entering while providing the gas-permeable performance, and the shielding sheet can be a label paper, achieving the dual effects of identification and folding the gas-permeable hole 203. The horizontal air passage 204 can prevent the gas-permeable hole 203 from being blocked by the shielding sheet.

[0054] The surfaces of the upper heat-conducting shell 1 and the lower heat-conducting shell 2 are provided with a plurality of heat-dissipating fins 9, and the upper heat-conducting shell 1 and the lower heat-conducting shell 2 are integrally formed with the heat-conducting bosses 6. The heat-dissipating fins 9 can effectively increase the surface area of the shell, thereby improving the heat-dissipating efficiency. The heat-conducting bosses 6 integrally formed in the shell have high heat-conducting efficiency.

[0055] The above is a further detailed description of the present application in combination with the specific preferred embodiments, and the specific implementation of the present application should not be limited to these descriptions. Any equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present application.

Claims

1. A dual-sided heat sinked parking air conditioner controller, characterized by, The device comprises a lower heat-conducting shell, on which a circuit substrate and an upper heat-conducting shell are sequentially positioned and sleeved. The outer side of the circuit substrate is connected to multiple MOS tubes through conductive pins. The inner sides of the upper and lower heat-conducting shells are both provided with heat-conducting bosses corresponding to the MOS tubes. The MOS tubes are fitted and fixed between the heat-conducting bosses on the upper and lower sides. The circuit substrate is also electrically connected to a battery input interface and an output interface.

2. The dual-sided heat sink PAVAC controller of claim 1, wherein, The circuit substrate is provided with a component power supply circuit, an MCU chip, a power circuit and a compressor drive circuit that are electrically connected to each other. The input end of the component power supply circuit is electrically connected to the battery input interface, the power circuit and the compressor drive circuit are electrically connected to the MOS tube through conductive pins, and the output end of the compressor drive circuit is electrically connected to the output interface.

3. The dual-sided heat sink PAVAC controller of claim 2, wherein, A communication module is provided on the circuit substrate, and the communication module is electrically connected to the component power supply circuit, the MCU chip and the communication interface.

4. The dual-sided heat sink PAVAC controller of claim 3, wherein, The battery input interface, output interface and communication interface are all installed on the top outer side of the upper heat-conducting shell.

5. The dual-sided heat sink PAVAC controller of claim 1, wherein, A plurality of positioning holes are provided around the outer side of the circuit substrate, and a plurality of positioning posts which can be inserted into the positioning holes are provided on the inner top of the lower heat-conducting shell.

6. The dual-sided heat sink PAVAC controller of claim 1, wherein, A socket seat is provided on the top of the lower heat-conducting shell corresponding to the outer periphery of the upper heat-conducting shell, and the upper heat-conducting shell is installed in the socket seat.

7. The dual-sided heat sink PAVAC controller of claim 6, wherein, Waterproof adhesive strips are provided on the outside of the joints between the socket, the battery input interface and the output interface.

8. The dual-sided heat dissipating parking air conditioner controller of claim 1, wherein, Insulating heat-conducting pads are provided between the MOS tube and the heat-conducting bosses on the upper and lower sides.

9. The dual-sided heat dissipating parking air conditioner controller of claim 1, wherein, An air vent is provided through the bottom of the lower heat-conducting shell. The air vent is connected to a downwardly protruding transverse air vent. A shielding piece is provided at the bottom of the transverse air vent.

10. The dual-sided heat dissipating parking air conditioner controller of claim 1, wherein, The surfaces of the upper heat-conducting shell and the lower heat-conducting shell are both provided with a plurality of heat dissipation fins, and the upper heat-conducting shell and the lower heat-conducting shell are respectively formed integrally with the heat-conducting bosses.

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