Motor controller anti-condensation device, motor controller and electric vehicle

Abstract

The utility model discloses a motor controller anti-condensation device, a motor controller and an electric vehicle, the motor controller anti-condensation device comprises a waterproof ventilation valve and a drying assembly, the waterproof ventilation valve is arranged outside the motor controller; the drying assembly comprises a shell and a moisture absorption part arranged in the shell, the shell is detachably clamped between the waterproof ventilation valve and the motor controller in a sealed mode, and the shell communicates with the waterproof ventilation valve and the motor controller. The motor controller can effectively ensure that air in the motor controller is dry, and is high in maintainability, simple in structure, small in size, light in weight and low in processing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-condensation of motor controllers, in particular to an anti-condensation device of a motor controller, a motor controller and an electric vehicle. Background Art

[0002] In the related technology, condensation will occur in the motor controller during operation. When the motor controller stops working, the water channel and the side wall of the motor controller box will form a cold wall surface. The hot air inside the motor controller will form small condensed water droplets when encountering the cold wall surface. The water droplets produced by condensation will corrode the PCB board circuit inside the motor controller, causing a short circuit, and will also cause the electrical clearance of the high-voltage components to decrease, resulting in ignition failure and other hazards.

[0003] At present, the anti-condensation technology of motor controllers has the following defects: First, hygroscopic materials are placed inside the motor controller to absorb moisture in the air to prevent condensation. This solution requires regular opening of the cover to replace the hygroscopic materials, and the maintainability is poor; Second, an anti-condensation channel is designed on the outside of the motor controller, and hygroscopic materials are placed in the channel so that the air entering the motor controller is dry enough to inhibit the occurrence of condensation. This design will increase the lateral size and weight of the controller and increase the complexity of the design; Third, heat-dissipating materials are applied or pasted inside the motor controller housing to disperse heat, avoid heat concentration, reduce the temperature difference inside the controller, and thus inhibit the generation of condensation. However, heat-dissipating materials are expensive and will increase the application and pasting process, which will increase the cost of the motor controller to a certain extent. Utility Model Content

[0004] In view of this, the utility model aims to propose an anti-condensation device for a motor controller, which can effectively ensure dry air in the motor controller, has high maintainability, simple structure, small size, light weight and low processing cost.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A motor controller anti-condensation device, comprising:

[0007] A waterproof and breathable valve, wherein the waterproof and breathable valve is arranged outside the motor controller;

[0008] The drying component comprises a shell and a moisture absorbing component arranged in the shell. The shell is detachably and sealingly clamped between the waterproof breathable valve and the motor controller, and the shell is respectively connected to the waterproof breathable valve and the motor controller.

[0009] The anti-condensation device of the motor controller of the embodiment of the utility model is mainly composed of the waterproof breathable valve and the drying component. The overall structure is simple, does not occupy the internal space of the controller and does not increase the external dimensions. It is small in size, light in weight, low in processing cost, and easy to install and replace.

[0010] According to the anti-condensation device for the motor controller of the embodiment of the utility model, the working principle is as follows: the external air first enters the waterproof breathable valve, the moisture in the air is first preliminarily filtered through the waterproof breathable valve, the air after the preliminarily filtration then enters the housing, and the moisture in the air is absorbed by the moisture absorbent, thereby effectively ensuring that the air in the motor controller is kept dry and condensation can be prevented. The moisture absorbent can evaporate its own moisture through the waterproof breathable valve in a dry environment to achieve the effect of repeated use, or the moisture absorbent can be replaced from time to time.

[0011] In summary, the anti-condensation device for the motor controller of the embodiment of the utility model can effectively ensure dry air in the motor controller, has high maintainability, simple structure, small size, light weight and low processing cost.

[0012] In some embodiments, the hygroscopic member is a desiccant.

[0013] In some embodiments, a first through hole is provided on the outer shell; a first snap-fit ​​structure is provided on the waterproof breathable valve, the first snap-fit ​​structure has a first external protruding hook portion, the first snap-fit ​​structure is inserted into the first through hole and the first external protruding hook portion is snapped onto the inner edge wall of the first through hole, and the outer shell is connected to the waterproof breathable valve through the first through hole.

[0014] In some embodiments, the drying component further includes a first sealing member, which is sealed at a gap between the housing and the waterproof breathable valve.

[0015] In some embodiments, a second through hole is provided on the outer shell, a second snap-fit ​​structure is provided on the outer wall of the second through hole, and the second snap-fit ​​structure has a second external hook; a mounting hole is provided on the shell of the motor controller, the second snap-fit ​​structure is inserted into the mounting hole and the second external hook is snapped onto the inner wall of the mounting hole, and the outer shell is connected to the interior of the motor controller through the second through hole and the mounting hole.

[0016] In some embodiments, the drying component further includes a second seal, which seals a gap between the housing of the motor controller and the casing.

[0017] In some embodiments, the drying component further includes an air permeable member, which is located in the housing and covers the second through hole.

[0018] In some embodiments, the housing of the waterproof breathable valve and the outer shell of the drying component are both injection molded parts.

[0019] Another object of the present invention is to provide a motor controller, wherein the motor controller includes the motor controller anti-condensation device according to the embodiment of the present invention.

[0020] Compared with the prior art, the advantages of the motor controller described in the utility model are the same as the advantages of the motor controller anti-condensation device, which will not be repeated here.

[0021] Another object of the present invention is to provide an electric vehicle, which includes the motor controller according to the embodiment of the present invention.

[0022] Compared with the prior art, the advantages of the electric vehicle of the present invention are the same as those of the motor controller, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 is a schematic diagram of the appearance of a motor controller anti-condensation device according to an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A schematic cross-sectional view at AA of FIG.

[0026] Figure 3 is an exploded three-dimensional schematic diagram of an anti-condensation device for a motor controller according to an embodiment of the utility model;

[0027] Figure 4 It is a schematic exploded side view of the anti-condensation device of the motor controller according to the embodiment of the utility model.

[0028] Description of reference numerals:

[0029] Waterproof breathable valve 1; breathable valve body 101; boss 1011; hook 10111; first buckle structure 1012; first outer protruding hook portion 10121; first annular portion 10122; breathable valve cover 102; convex annular portion 1021; slot 10211; first waterproof breathable membrane 103; drying component 2; housing 201; first through hole 2011; second through hole 2012; second buckle structure 2013; second outer protruding hook portion 20131; second annular portion 20132; moisture absorbent member 202; first sealing member 203; second sealing member 204; breathable member 205. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] The following will refer to Figure 1-Figure 4 The utility model is described in detail in conjunction with the embodiments.

[0032] like Figures 1 to 4 As shown, the anti-condensation device of the motor controller according to the embodiment of the utility model includes a waterproof breathable valve 1 and a drying component 2.

[0033] Specifically, the waterproof breathable valve 1 includes a breathable valve body 101, a breathable valve cover 102 and a first waterproof breathable membrane 103; one end of the breathable valve body 101 has a boss 1011 with a hole, and the first waterproof breathable membrane 103 is pasted on the boss 1011 to play a waterproof and breathable role; the breathable valve body 101 and the breathable valve cover 102 are detachably clamped and fixed, for example, the breathable valve body 101 is circumferentially spaced apart at the periphery of the boss 1011 The vent valve cover 102 is provided with a hook 10111 extending outward, the edge of one side of the vent valve cover 102 has a convex ring portion 1021, the inner side of the convex ring portion 1021 has a slot 10211, and the boss 1011 is engaged with the slot 10211 of the vent valve cover 102 through the hook 10111, so as to achieve detachable engagement and fixation, thereby protecting the first waterproof breathable membrane 103, and at the same time, it is also convenient to replace the first waterproof breathable membrane 103 during later maintenance. The waterproof breathable valve 1 is arranged outside the motor controller (not shown in the figure), and is not directly connected to the motor controller, but is indirectly connected to the motor controller through the drying component 2. In this way, the external air needs to pass through the waterproof breathable valve 1 and then the drying component 2 before entering the motor controller. Therefore, the waterproof breathable valve 1 can preliminarily filter the moisture in the air through the first waterproof breathable membrane 103. It should be noted that the waterproof breathable valve 1 can adopt the waterproof breathable valve on the original motor controller.

[0034] The drying assembly 2 includes a housing 201 and a moisture absorbing member 202 (such as a desiccant) disposed in the housing 201; wherein the housing 201 serves to accommodate the absorbent member and allow air to pass therethrough, and the moisture absorbing member 202 serves to absorb moisture in the air entering the housing 201; the housing 201 is detachably and sealingly clamped between the waterproof breathable valve 1 and the motor controller, that is, the housing 201 and the waterproof breathable valve 1 are clamped and fixed and can be easily disassembled, and the gap between the housing 201 and the waterproof breathable valve 1 at the assembly is sealed to prevent external air from entering the housing 201 through the gap at the assembly between the housing 201 and the waterproof breathable valve 1; The housing 201 and the motor controller are fixed by snap-fitting and can be easily disassembled, and the gap between the housing 201 and the motor controller is sealed to prevent external air from entering the motor controller through the gap between the housing 201 and the motor controller; the housing 201 is connected to the waterproof breathable valve 1 and the motor controller respectively, so that external air can first enter the housing 201 through the waterproof breathable valve 1, and then enter the motor controller from the housing 201, wherein the moisture absorbent 202 in the housing 201 can effectively absorb moisture in the air entering the housing 201, ensuring that the air entering the motor controller is dry. Since the housing 201 is connected to the waterproof breathable valve 1 and the motor controller respectively by snap-fitting, disassembly and assembly are convenient, which is convenient for the maintenance of the anti-condensation device of the motor controller in the later stage.

[0035] The anti-condensation device of the motor controller of the embodiment of the utility model is mainly composed of a waterproof breathable valve 1 and a drying component 2. The overall structure is simple, does not occupy the internal space of the controller and does not increase the external dimensions. It is small in size, light in weight, low in processing cost, and easy to install and replace.

[0036] According to the anti-condensation device for the motor controller of the embodiment of the utility model, the working principle is as follows: the external air first enters the waterproof breathable valve 1, and the moisture in the air is first preliminarily filtered through the waterproof breathable valve 1, and the air after the preliminarily filtration enters the housing 201, and the moisture in the air is absorbed by the moisture absorbent 202, so that the air in the motor controller can be effectively kept dry and the condensation phenomenon can be prevented. The moisture absorbent 202 can evaporate its own moisture through the waterproof breathable valve 1 in a dry environment to achieve the effect of repeated use, or a new moisture absorbent 202 can be replaced from time to time.

[0037] In summary, the anti-condensation device for the motor controller of the embodiment of the utility model can effectively ensure dry air in the motor controller, has high maintainability, simple structure, small size, light weight and low processing cost.

[0038] In some embodiments, the moisture absorbing member 202 is a desiccant, which has a strong water absorption capacity and can effectively absorb moisture in the air before entering the motor controller to ensure that the air inside the motor controller is dry. In addition, the desiccant has a low cost.

[0039] In some embodiments, a first through hole 2011 is provided on the shell 201; a first snap-fit ​​structure 1012 is provided on the waterproof breathable valve 1, and the first snap-fit ​​structure 1012 is specifically arranged on the breathable valve body 101, and the first snap-fit ​​structure 1012 has a first external protruding hook 10121, the first snap-fit ​​structure 1012 is inserted into the first through hole 2011, and the first external protruding hook 10121 is snapped onto the inner edge wall of the first through hole 2011, thereby realizing the detachable fixation of the shell 201 and the waterproof breathable valve 1; the shell 201 is connected to the waterproof breathable valve 1 through the first through hole 2011, and the external air enters the shell 201 through the waterproof breathable valve 1 and the first through hole 2011 in sequence.

[0040] Specifically, the first through hole 2011 is a conical hole, and the outer end diameter of the first through hole 2011 is larger than the inner end diameter of the first through hole 2011. This is conducive to the first snap structure 1012 being easily inserted into the first through hole 2011 and the first outer hook 10121 being snapped onto the inner wall surface of the first through hole 2011.

[0041] In some embodiments, the drying component 2 also includes a first seal 203, which seals the gap between the outer shell 201 and the waterproof breathable valve 1, that is, the first seal 203 is used to seal the gap between the outer shell 201 and the waterproof breathable valve 1 to prevent external air from entering the outer shell 201 through the gap between the outer shell 201 and the waterproof breathable valve 1.

[0042] Specifically, the first through hole 2011 is a conical hole, the outer end diameter of the first through hole 2011 is larger than the inner end diameter of the first through hole 2011, the root of the first snap structure 1012 is the first annular portion 10122, the first sealing member 203 is a first elastic sealing ring, the first sealing member 203 is sleeved on the first annular portion 10122 and is located in the first through hole 2011, that is, the first sealing member 203 is squeezed between the hole wall of the first through hole 2011 and the first annular portion 10122, thereby preventing external air from entering the shell 201 from the gap between the shell 201 and the waterproof breathable valve 1.

[0043] In some embodiments, a second through hole 2012 is provided on the outer shell 201, a second snap-fit ​​structure 2013 is provided on the outer wall of the second through hole 2012, and a second outer hook portion 20131 is provided on the second snap-fit ​​structure 2013; a mounting hole (not shown in the figure) is provided on the shell of the motor controller, the second snap-fit ​​structure 2013 is inserted into the mounting hole and the second outer hook portion 20131 is snapped onto the inner wall of the mounting hole, thereby realizing detachable fixation of the shell 201 and the shell of the motor controller; the shell 201 is connected to the interior of the motor controller through the second through hole 2012 and the mounting hole, so that the air in the shell 201 can enter the motor air vent from the second through hole 2012.

[0044] In some embodiments, the first through hole 2011 and the second through hole 2012 are arranged on opposite sides of the housing 201. Preferably, the first through hole 2011 and the second through hole 2012 are directly opposite to each other. This is conducive to the air passing through the moisture absorbent member 202 and then entering the motor controller. The moisture in the air is effectively absorbed by the absorbent member, thereby ensuring that the air in the motor controller is dry.

[0045] In some embodiments, the drying component 2 also includes a second seal 204, which seals the gap between the shell of the motor controller and the outer shell 201, that is, the second seal 204 is used to seal the gap between the outer shell 201 and the motor controller at the assembly point to prevent external air from entering the motor controller through the gap between the outer shell 201 and the motor controller.

[0046] Specifically, the mounting hole is a cylindrical hole, the root of the second snap-fit ​​structure 2013 is the second annular portion 20132, the second sealing member 204 is a second elastic sealing ring, and the second sealing member 204 is sleeved on the second annular portion 20132 and is located outside the mounting hole, that is, the second sealing member 204 is squeezed between the outer wall of the mounting hole and the outer shell 201, thereby preventing external air from entering the motor controller from the gap between the outer shell 201 and the motor controller.

[0047] Or the mounting hole is a conical hole, the aperture of the outer end of the mounting hole is larger than the aperture of the inner end of the mounting hole, the root of the second snap-fit ​​structure 2013 is the second annular portion 20132, the second sealing member 204 is a second elastic sealing ring, the second sealing member 204 is sleeved on the second annular portion 20132 and is located in the mounting hole, that is, the second sealing member 204 is squeezed between the hole wall of the mounting hole and the second annular portion 20132, thereby preventing external air from entering the motor controller from the gap between the outer shell 201 and the motor controller.

[0048] In some embodiments, the drying assembly 2 further comprises a breathable member 205, which is located in the housing 201 and covers the second through hole 2012. By providing the breathable member 205 at the second through hole 2012, an absorbent such as a desiccant can be prevented from entering the motor controller.

[0049] Specifically, the breathable member 205 is a second waterproof breathable membrane or a mesh member, wherein the second waterproof breathable membrane can not only prevent absorbents such as desiccant from entering the motor controller, but also prevent moisture in the housing 201 from entering the motor controller.

[0050] In some embodiments, the housing of the waterproof breathable valve 1 (such as the breathable valve cover 102 and the breathable valve body 101) and the housing 201 of the drying component 2 are both injection molded parts, which are easy to process, have low processing costs and are light in weight.

[0051] The utility model also proposes a new motor controller, which comprises the motor controller anti-condensation device of any one of the above embodiments.

[0052] Compared with the prior art, the advantages of the motor controller of the utility model are the same as those of the anti-condensation device of the motor controller, which will not be described in detail here.

[0053] The utility model also provides an electric vehicle, which comprises the motor controller of the above embodiment.

[0054] Compared with the prior art, the advantages of the electric vehicle of the present invention are the same as those of the motor controller, which will not be described in detail here.

[0055] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor controller anti-condensation device, characterized in that: include: A waterproof breathable valve (1), wherein the waterproof breathable valve (1) is arranged outside the motor controller; A drying component (2), the drying component (2) comprising a housing (201) and a moisture absorbing member (202) arranged in the housing (201), the housing (201) being detachably and sealingly clamped between the waterproof breathable valve (1) and the motor controller, and the housing (201) being respectively connected to the waterproof breathable valve (1) and the motor controller.

2. The motor controller anti-condensation device according to claim 1, characterized in that: The moisture absorbing component (202) is a desiccant.

3. The motor controller anti-condensation device according to claim 1 or 2, characterized in that: The shell (201) is provided with a first through hole (2011); the waterproof breathable valve (1) is provided with a first snap-fit ​​structure (1012), the first snap-fit ​​structure (1012) has a first external protruding hook portion (10121), the first snap-fit ​​structure (1012) is inserted into the first through hole (2011) and the first external protruding hook portion (10121) is snapped onto the inner wall surface of the first through hole (2011), and the shell (201) is connected to the waterproof breathable valve (1) through the first through hole (2011).

4. The motor controller anti-condensation device according to claim 3, characterized in that: The drying component (2) further comprises a first sealing member (203), wherein the first sealing member (203) seals a gap between the housing (201) and the waterproof breathable valve (1).

5. The motor controller anti-condensation device according to claim 1 or 2, characterized in that: The outer shell (201) is provided with a second through hole (2012), the outer wall surface of the second through hole (2012) is provided with a second snap-fit ​​structure (2013), and the second snap-fit ​​structure (2013) has a second external protruding hook portion (20131); a housing of the motor controller is provided with a mounting hole, the second snap-fit ​​structure (2013) is inserted into the mounting hole and the second external protruding hook portion (20131) is snapped onto the inner wall surface of the mounting hole, and the outer shell (201) is connected to the interior of the motor controller through the second through hole (2012) and the mounting hole.

6. The motor controller anti-condensation device according to claim 5, characterized in that: The drying component (2) further comprises a second sealing member (204), wherein the second sealing member (204) seals a gap between the housing of the motor controller and the casing (201).

7. The motor controller anti-condensation device according to claim 5, characterized in that: The drying component (2) further comprises an air-permeable member (205), wherein the air-permeable member (205) is located inside the housing (201) and covers the second through hole (2012).

8. The motor controller anti-condensation device according to claim 1 or 2, characterized in that: The housing of the waterproof breathable valve (1) and the outer shell (201) of the drying component (2) are both injection-molded parts.

9. A motor controller, characterized in that: It comprises an anti-condensation device for a motor controller according to any one of claims 1-8.

10. An electric vehicle, characterized in that: Comprising a motor controller according to claim 9.

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