Electronic expansion valve opening control device, assembling method and vehicle

Abstract

The invention provides an electronic expansion valve opening control device, an assembling method and a vehicle. The electronic expansion valve opening control device comprises an upper shell, a lower shell, a plug-in assembly, a PCB assembly and at least two coil assemblies. The upper shell is connected with the lower shell, and an installation space is formed; the coil assembly is installed in the installation space and can be connected with the valve element. The PCB assembly is mounted in the mounting space and is connected with the coil assembly; and the plug-in assembly is arranged on the upper shell and / or the lower shell, and is connected with the PCB assembly. By reducing the number of parts of the electronic expansion valve opening control device, cost can be reduced, assembly actions can be reduced, and working hours can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle electronic expansion valve opening degree control, in particular to an electronic expansion valve opening degree control device, an assembling method and a vehicle. BACKGROUND

[0002] The electronic expansion valve in the new energy vehicle is usually used to adjust the refrigerant flow, so as to realize the refrigerating capacity distribution.

[0003] At present, the electronic expansion valve usually controls its opening degree through a coil. However, the number of electronic expansion valves of the vehicle is usually large, and each electronic expansion valve needs to be equipped with a PCB board, a coil, a shell, a waterproof support, a waterproof O-ring and a plug-in, so that the number of parts is relatively large, the cost is high, and the repetitive assembly actions are many, which wastes the working hours.

[0004] Therefore, it is necessary to develop an electronic expansion valve opening degree control device, an assembling method and a vehicle, so as to reduce the number of parts of the electronic expansion valve opening degree control device, reduce the cost, reduce the assembly actions and save the working hours. SUMMARY

[0005] The purpose of the present application is to provide an electronic expansion valve opening degree control device, an assembling method and a vehicle, so as to solve the problem that the number of parts of the existing electronic expansion valve opening degree control device is large, thereby causing high cost and long assembly time.

[0006] To solve the above technical problems, the present application provides an electronic expansion valve opening degree control device, which comprises an upper shell, a lower shell, a plug-in assembly, a PCB board assembly and at least two coil assemblies; the upper shell is connected with the lower shell and forms a mounting space; the coil assembly is installed in the mounting space and can be connected with a valve core; the PCB board assembly is installed in the mounting space and is connected with the coil assembly; the plug-in assembly is installed on the upper shell and / or the lower shell and is connected with the PCB board assembly.

[0007] Optionally, the lower shell comprises a coil mounting groove and a mounting boss, the coil mounting groove is in the form of a circular ring, a mounting through hole is formed in the circular ring of the coil mounting groove, and the mounting boss extends from the bottom of the mounting groove to the direction of the slot opening.

[0008] Optionally, the lower shell is further provided with an anti-rotation rib corresponding to the coil assembly, the coil assembly has an anti-rotation convex rib, and the anti-rotation rib is used to cooperate with the anti-rotation convex rib on the coil assembly to limit the rotation of the coil assembly.

[0009] Optionally, at least two of the coil assemblies include at least one small-diameter electronic expansion valve coil and / or at least one large-diameter electronic expansion valve coil, the small-diameter electronic expansion valve coil is installed on the lower shell and has a first gap with the upper shell, the large-diameter electronic expansion valve coil is installed on the lower shell and has a second gap with the upper shell, and the second gap is smaller than the first gap.

[0010] Optionally, further comprising a pressing block connected with the lower shell, for pressing the small-diameter electronic expansion valve coil on the lower shell to prevent displacement of the small-diameter electronic expansion valve coil.

[0011] Optionally, the coil assembly includes a main body shell, a terminal fixing block, a wire harness, a terminal pin, a plug-in row, a coil framework, a copper winding, and a magnetic pole cover plate, the magnetic pole cover plate is arranged on the main body shell and forms a containing space, the coil framework and the copper winding are arranged in the containing space, the copper winding is wound on the coil framework, one end of the wire harness is connected with the coil framework, the other end of the wire harness extends out of the containing space and is connected with the plug-in row, the terminal pin is installed on the plug-in row, and the terminal pin is used for connecting with a PCB assembly.

[0012] Optionally, a limiting groove is formed on the PCB assembly, and a limiting boss is arranged on the lower shell, and the limiting groove and the limiting boss are matched to limit displacement of the PCB assembly.

[0013] Optionally, a locking boss is arranged on the upper shell, and the upper shell presses the PCB assembly on the lower shell through the locking boss.

[0014] The application further provides a vehicle comprising a vehicle VCU, a LIN line, an MCU, and the electronic expansion valve opening degree control device, the vehicle VCU is connected with the MCU through the LIN line, the MCU is connected with the electronic expansion valve opening degree control device.

[0015] The application further provides an assembling method of the electronic expansion valve opening degree control device, comprising the following steps: installing the coil assembly between the upper shell and the lower shell; installing the PCB assembly between the upper shell and the lower shell and connecting the coil assembly; installing the plug-in assembly on the upper shell and / or the lower shell and connecting the PCB assembly; and fixedly connecting the upper shell and the lower shell.

[0016] The electronic expansion valve opening degree control device, the assembling method and the vehicle have the following beneficial effects: By mounting multiple coil assemblies in the mounting space, integrating multiple original PCB boards on a PCB assembly, integrating multiple original plug-in components on a plug-in assembly, and setting multiple original housings into an upper housing and a lower housing, the number of parts can be reduced, the assembly process can be simplified, the assembly efficiency can be improved, the cost can be reduced, the electronic expansion valve opening control device is more concise, and the vehicle layout is more beautiful and neat. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic diagram of the electronic expansion valve opening control device in the embodiment of the present application after being mounted on the valve core; Figure 2 is a structure schematic diagram of the electronic expansion valve opening control device in the embodiment of the present application; Figure 3 is a cross-sectional structure schematic diagram of the electronic expansion valve opening control device in the embodiment of the present application; Figure 4 is a structure schematic diagram of a coil assembly of the electronic expansion valve opening control device in the embodiment of the present application; Figure 5 is a cross-sectional structure schematic diagram of the coil assembly of the electronic expansion valve opening control device in the embodiment of the present application; Figure 6 is a structure schematic diagram of a connection between the coil assembly and a PCB assembly of the electronic expansion valve opening control device in the embodiment of the present application; Figure 7 is a structure schematic diagram of a lower housing of the electronic expansion valve opening control device in the embodiment of the present application; Figure 8 is an assembly structure schematic diagram of a PCB assembly and the lower housing of the electronic expansion valve opening control device in the embodiment of the present application; Figure 9 is a vehicle thermal management integrated module control mode in the prior art; Figure 10 is a vehicle thermal management integrated module control mode in the embodiment of the present application.

[0018] Explanation of reference signs: 100-upper housing; 110-structure boss; 200-lower housing; 210-coil mounting groove; 220-mounting boss; 230-mounting through hole; 240-anti-rotation rib; 250-limiting boss; 260-pressing boss; 400-PCB assembly; 410-limiting groove; 500-coil assembly; 510-main body shell; 520-terminal fixing block; 530-wire harness; 540-terminal pin; 550-plug-in row; 560-coil framework; 570-copper wire; 580-magnetic pole cover plate; 590-anti-rotation rib; 600-pressing block. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0021] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Reference Figure 1、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , Figure 1 is a structural schematic diagram of the electronic expansion valve opening degree control device installed on the valve core in the embodiment of the present application, Figure 2 is a structural schematic diagram of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 3 is a sectional structural schematic diagram of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 4 is a structural schematic diagram of the coil assembly 500 of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 5 is a sectional structural schematic diagram of the coil assembly 500 of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 6 is a structural schematic diagram of the connection between the coil assembly 500 and the PCB assembly 400 of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 7 is a structural schematic diagram of the lower shell 200 of the electronic expansion valve opening degree control device in the embodiment of the present application, Figure 8 is a structural schematic diagram of the assembly of the PCB assembly 400 and the lower shell 200 of the electronic expansion valve opening degree control device in the embodiment of the present application, and the embodiment provides an electronic expansion valve opening degree control device, which comprises an upper shell 100, a lower shell 200, a plug assembly, a PCB assembly 400 and at least two coil assemblies 500; The upper shell 100 is connected with the lower shell 200 and forms a mounting space; The coil assembly 500 is installed in the mounting space and can be connected with the valve core; The PCB assembly 400 is installed in the mounting space and is connected with the coil assembly 500; The plug assembly is installed on the upper shell 100 and / or the lower shell 200 and is connected with the PCB assembly 400.

[0026] By installing a plurality of coil assemblies 500 in the mounting space, integrating a plurality of original PCBs on a PCB assembly 400, integrating a plurality of original plugs on a plug assembly, and setting a plurality of original shells into an upper shell 100 and a lower shell 200, the number of parts can be reduced, the assembly process can be simplified, the assembly efficiency can be improved, the cost can be reduced, the electronic expansion valve opening degree control device is more concise, and the vehicle layout is more beautiful and neat.

[0027] Preferably, the upper shell 100 and the lower shell 200 are connected by laser welding.

[0028] Preferably, the lower shell 200 comprises a coil mounting groove 210 and a mounting boss 220, the coil mounting groove 210 is in the form of a circular ring, a mounting through hole 230 is formed in the inner ring of the coil mounting groove 210, and the mounting boss 220 extends from the bottom of the mounting groove to the direction of the slot opening. In this way, the coil assembly 500 can be limited by the mounting groove and the mounting boss 220, which facilitates the automatic centering and alignment of the electronic expansion valve opening control device when it is installed on multiple valve cores, and avoids the problem that the electronic expansion valve opening control device cannot be installed on multiple valve cores due to size tolerance. After the coil assembly 500 is installed on the lower shell 200, the coil assembly 500 is partially inserted through the mounting through hole 230 and connected to the valve core.

[0029] Specifically, the lower shell 200 and the coil assembly 500 form a single-sided 1mm gap fit.

[0030] Further, the lower shell 200 is also provided with an anti-rotation rib 240, and the coil assembly 500 has an anti-rotation rib 590, which is used to cooperate with the anti-rotation rib 590 on the coil assembly 500 to limit the rotation of the coil assembly 500.

[0031] Preferably, at least two of the coil assemblies 500 include at least one small-diameter electronic expansion valve coil and / or at least one large-diameter electronic expansion valve coil, the small-diameter electronic expansion valve coil has a first gap with the upper shell 100 after being installed on the lower shell 200, the large-diameter electronic expansion valve coil has a second gap with the upper shell 100 after being installed on the lower shell 200, and the second gap is smaller than the first gap. That is, all of the coil assemblies 500 can be small-diameter electronic expansion valve coils, or all of the coil assemblies 500 can be large-diameter electronic expansion valve coils, or part of the coil assemblies 500 are small-diameter electronic expansion valve coils and the other part are large-diameter electronic expansion valve coils.

[0032] The lower shell 200 is provided with a pressing boss 260, and the electronic expansion valve opening control device further comprises a pressing block 600 connected with the pressing boss 260, which is used to press the small-diameter electronic expansion valve coil on the pressing boss 260 to prevent the small-diameter electronic expansion valve coil from shifting.

[0033] The pressing block 600 is installed on the lower surface of the PCB assembly 400, and the upper surface of the pressing block 600 has a 5mm gap with the PCB assembly 400.

[0034] The upper shell 100 is provided with a structure boss 110, and the upper shell 100 presses the large-diameter electronic expansion valve coil on the lower shell 200 through the structure boss 110.

[0035] Reference Figure 5 And Figure 6 The coil assembly 500 comprises a main body shell 510, a terminal fixing block 520, a wire harness 530, a terminal pin 540, a plug-in row 550, a coil framework 560, copper winding 570 and a magnetic pole cover plate 580, the magnetic pole cover plate 580 is arranged on the main body shell 510 and forms a containing space, the coil framework 560 and the copper winding 570 are arranged in the containing space, the copper winding 570 is arranged on the coil framework 560, one end of the wire harness 530 is connected with the coil framework 560, the other end of the wire harness 530 is connected with the plug-in row 550 and extends out of the containing space, the terminal pin 540 is installed on the plug-in row 550, and the terminal pin 540 is used for being connected with the PCB assembly 400. The wire harness 530 is connected with the plug-in row 550 on the other side, the terminal pin 540 is installed on the plug-in row 550, and the flexibility and ductility of the wire harness 530 are used to ensure that the terminal pin 540 can be smoothly inserted into the PCB coil terminal pin 540 hole of the PCB assembly 400.

[0036] Specifically, the specification of the copper winding 570 is 2.5 / 250, and the copper winding 570 is wound on the coil framework 560 according to the resistance value of 24.4Ω.

[0037] The number of the coil framework 560 is two, and the two coil frameworks 560 are oppositely arranged.

[0038] One side of the four wire harnesses 530 is fixed on the coil framework 560 by means of small bolts.

[0039] The terminal pin 540 is about 3mm higher than the PCB assembly 400, and the final connection between the terminal pin 540 and the PCB assembly 400 is realized by means of tin soldering.

[0040] All components of the coil assembly 500 are fixed by means of plastic packaging, the coil assembly 500 is placed in the corresponding installation groove of the lower shell 200, and the coil assembly 500 is limited by the installation boss 220.

[0041] The limiting groove 410 is arranged on the PCB assembly 400, the limiting boss 250 is arranged on the lower shell 200, and the limiting groove 410 and the limiting boss 250 are matched to limit the displacement of the PCB assembly 400.

[0042] Specifically, the limiting groove 410 is a rectangular limiting groove 410. For example, it is a 2mm×2mm rectangular groove.

[0043] Further, the upper shell 100 is provided with a locking boss, and the upper shell 100 is used to press the PCB plate assembly 400 on the lower shell 200 through the locking boss.

[0044] The maximum element on the PCB plate assembly 400 and the minimum gap N inside the upper shell 100 are greater than or equal to 5 mm, and the distance L between the coil assembly 500 and the lower surface of the upper shell 100 is greater than or equal to 20 mm.

[0045] The plug-in assembly is installed on the upper shell 100 through a plastic sealing process and a key groove connection method.

[0046] The entire electronic expansion valve opening control device is fastened on the corresponding agent side flow channel plate through M6x16 combination bolts.

[0047] In the electronic expansion valve opening control device in the embodiment, four coils, four waterproof supports, four waterproof O-rings, and four plug-ins are simplified to one upper shell 100, one lower shell 200, one PCB plate assembly 400, one plug-in assembly, and four coils, thereby simplifying the assembly process and reducing the assembly time.

[0048] The assembly process of the electronic expansion valve opening control device in the embodiment is as follows: First, the coil assembly 500 is placed in the corresponding mounting groove of the lower shell 200, the small hole on the main body shell 510 of the coil assembly 500 is inserted through the mounting boss 220 of the lower shell 200, the coil assembly 500 is accurately positioned, the anti-rotation boss 590 is placed against the anti-rotation boss 240 of the lower shell 200, and the coil assembly 500 is placed.

[0049] Second, the compression block 600 is pressed on the small-diameter electronic expansion valve coil, the two holes are centered, and the fastening bolt is used to press and fix the small-diameter electronic expansion valve coil.

[0050] Third, the PCB plate assembly 400 is placed on the installed components, and the terminal pins 540 on the four coil assemblies 500 are inserted into the corresponding terminal pin 540 holes of the PCB plate assembly 400.

[0051] Then, the PCB plate limiting groove 410 on the pre-connected PCB plate assembly 400 is clamped at the limiting boss 250 of the lower shell 200, the terminal pins 540 and the PCB plate assembly 400 are tin soldered, and the soft connection of the coil and the PCB plate assembly 400 is completed.

[0052] Then, the upper shell 100 is installed on the lower shell 200, the structure boss 110 on the upper shell 100 is placed on the large-diameter electronic expansion valve coil, the upper and lower shells 200 are fastened through the bolts, and the upper shell 100 and the lower shell 200 are laser welded at the joint surface line.

[0053] Reference Figure 9 and Figure 10 , Figure 9 is a vehicle thermal management integrated module control method in the prior art, Figure 10 is a vehicle thermal management integrated module control method in the embodiment of the present application, and the embodiment also provides a vehicle comprising a vehicle VCU (Vehicle Control Unit), a LIN line, an MCU (Microcontroller Unit), and the electronic expansion valve opening degree control device in the above embodiment. The vehicle VCU is connected with the MCU through the LIN line, the MCU is connected with the electronic expansion valve opening degree control device (plug-in assembly), and the vehicle VCU directly controls four electric drives through four LIN lines in the prior art, and the four electric drives control expansion valve cores respectively. In the embodiment, the vehicle VCU controls four coil assemblies 500 through one LIN line and one MCU, and then controls the expansion valve core. The embodiment saves three power chips, three LIN transceivers, and three MCUs, realizes mechanical and electronic decoupling, and greatly reduces the integrated premium of the supplier mechatronics.

[0054] The embodiment also provides an assembling method of the electronic expansion valve opening degree control device in the above embodiment, which comprises the following steps: installing the coil assembly 500 between the upper shell 100 and the lower shell 200; installing the PCB board assembly 400 between the upper shell 100 and the lower shell 200, and connecting the coil assembly 500; installing the plug-in assembly on the upper shell 100 and / or the lower shell 200, and connecting the plug-in assembly with the PCB board assembly 400; fixedly connecting the upper shell 100 and the lower shell 200.

[0055] The above description is only a description of the preferred embodiment of the present application, and does not limit the scope of the present application in any way. Any modification or modification of the present application by a person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. An electronic expansion valve opening degree control device characterized by comprising: The electronic expansion valve opening degree control device comprises an upper shell, a lower shell, a plug assembly, a PCB assembly and at least two coil assemblies; The upper shell is connected with the lower shell and forms a mounting space; The coil assembly is mounted in the mounting space and can be connected with a valve core; The PCB assembly is mounted in the mounting space and is connected with the coil assembly; The plug assembly is mounted on the upper shell and / or the lower shell and is connected with the PCB assembly.

2. The electronic expansion valve opening degree control device according to claim 1, wherein The lower shell comprises a coil mounting groove and a mounting boss, the coil mounting groove is in a circular ring shape, an installation through hole is formed in the circular ring of the coil mounting groove, and the mounting boss extends from the bottom of the mounting groove to the direction of the slot opening.

3. The electronic expansion valve opening degree control device according to claim 1, wherein The lower shell is further provided with an anti-rotation rib corresponding to the coil assembly, the coil assembly has an anti-rotation convex rib, and the anti-rotation rib is used to cooperate with the anti-rotation convex rib on the coil assembly to limit the rotation of the coil assembly.

4. The electronic expansion valve opening degree control device according to claim 1, wherein At least one small-bore electronic expansion valve coil and / or at least one large-bore electronic expansion valve coil are included in the at least two coil assemblies, the small-bore electronic expansion valve coil has a first gap with the upper shell after being mounted on the lower shell, the large-bore electronic expansion valve coil has a second gap with the upper shell after being mounted on the lower shell, and the second gap is smaller than the first gap.

5. The electronic expansion valve opening degree control device according to claim 4, wherein A pressing block is further included, which is connected with the lower shell and is used to press the small-bore electronic expansion valve coil on the lower shell to prevent displacement of the small-bore electronic expansion valve coil.

6. The electronic expansion valve opening degree control device according to claim 1, wherein The coil assembly comprises a main body shell, a terminal fixing block, a wire harness, a terminal pin, a plug strip, a coil framework, a copper winding and a magnetic pole cover plate, the magnetic pole cover plate is arranged on the main body shell and forms a containing space, the coil framework and the copper winding are arranged in the containing space, the copper winding is wound on the coil framework, one end of the wire harness is connected with the coil framework, the other end of the wire harness extends out of the containing space and is connected with the plug strip, the terminal pin is mounted on the plug strip, and the terminal pin is used to be connected with the PCB assembly.

7. The electronic expansion valve opening degree control device according to claim 1, wherein A limiting groove is formed on the PCB assembly, a limiting boss is arranged on the lower shell, and the limiting groove and the limiting boss are matched to limit displacement of the PCB assembly.

8. The electronic expansion valve opening degree control device according to claim 7, wherein A locking boss is arranged on the upper shell, and the upper shell presses the PCB assembly on the lower shell through the locking boss.

9. A vehicle characterized by comprising: The electronic expansion valve opening degree control device comprises a whole vehicle VCU, a LIN line, an MCU and the electronic expansion valve opening degree control device according to any one of claims 1-8, the whole vehicle VCU is connected with the MCU through the LIN line, and the MCU is connected with the electronic expansion valve opening degree control device.

10. An assembling method of the electronic expansion valve opening degree control device according to any one of claims 1 to 8, characterized by, The electronic expansion valve opening degree control device comprises: The coil assembly is mounted between the upper shell and the lower shell; The PCB assembly is mounted between the upper shell and the lower shell and is connected with the coil assembly; The plug assembly is mounted on the upper shell and / or the lower shell and is connected with the PCB assembly; The upper shell and the lower shell are fixedly connected.

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