Motor controller shell and motor controller

Abstract

The utility model provides a motor controller housing and a motor controller. The motor controller housing comprises: an upper cover; the lower shell and the upper cover are oppositely arranged, the lower shell and the upper cover are connected through a fastener, and two layers of sealing grooves are formed in the lower shell; the first sealing ring and the second sealing ring are arranged in the sealing groove, and the first sealing ring is close to the inner wall of the motor controller shell; and the second sealing ring is close to the outer wall of the motor controller shell. The motor controller shell can effectively block erosion of external dust and chemical substances, has the advantage of being good in sealing effect, and can improve durability and stability of a motor controller.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor controller technical field especially relates to a motor controller casing and motor controller. BACKGROUND

[0002] The motor controller obtains the demand of the whole vehicle from the whole vehicle controller, obtains the electric energy from the vehicle-mounted power battery, obtains the current and voltage required by the motor control through the modulation of the inverter, provides the motor, so that the motor and the rotation speed and torque meet the requirements of the whole vehicle. The sealing design of the motor controller casing is very important. The motor controller needs to have reliable sealing performance during operation. When the use environment is bad, the internal devices of the controller can be effectively protected from damage.

[0003] In the prior art, a sealing ring mounting groove is arranged on the motor controller casing, and the sealing ring is arranged in the sealing ring mounting groove.

[0004] In the implementation of the utility model, the inventor finds that at least the following problems exist in the prior art: the motor controller casing with only one sealing ring will cause sealing failure due to damage of the sealing ring in harsh environments such as water, dust, salt spray, and high altitude, and water vapor or other substances will enter the motor controller, causing operation failure of the motor controller. UTILITY MODEL CONTENTS

[0005] The utility model aims to at least solve one of the technical problems in the related art to some extent.

[0006] Therefore, the utility model aims to provide a motor controller casing and a motor controller with good sealing effect.

[0007] To achieve the above-mentioned purpose, the utility model provides a motor controller casing in the first aspect, which comprises:

[0008] An upper cover;

[0009] A lower casing, which is arranged opposite to the upper cover and connected to the upper cover by fasteners, and two layers of sealing grooves are arranged on the lower casing;

[0010] A first sealing ring and a second sealing ring are arranged in the sealing groove, the first sealing ring is close to the inner wall of the motor controller casing, and the second sealing ring is close to the outer wall of the motor controller casing.

[0011] According to the motor controller shell, the second sealing ring located at the inner layer is made of high-elasticity material, liquid or moisture can be effectively prevented from penetrating, and the waterproof performance of the motor controller is improved; the first sealing ring sealing element located at the outer layer is made of high-temperature-resistant and corrosion-resistant material, can effectively prevent external dust and chemical substances from eroding, has the advantages of good sealing effect, and can improve the durability and stability of the motor controller.

[0012] According to one embodiment of the utility model, the top surface of lower shell is divided into first top surface and second top surface from outside to inside, the first top surface is downwardly inclined and has an angle with the second top surface, the gap between the first top surface and the bottom surface of upper cover forms a drainage port.

[0013] According to one embodiment of the utility model, a plurality of drainage grooves are arranged on the first top surface, and the drainage grooves are communicated with the sealing grooves close to the outer wall of the motor controller shell.

[0014] According to one embodiment of the utility model, the cross section of the drainage groove is rectangular, the bottom surface of the drainage groove is a first bottom surface, and the first bottom surface has an angle with the second top surface.

[0015] According to one embodiment of the utility model, the angle between the first bottom surface and the second top surface is greater than the angle between the first top surface and the second top surface.

[0016] According to one embodiment of the utility model, the cross section of the sealing groove is rectangular, and the angle between the first bottom surface and the side surface of the sealing groove is 90 to 150 degrees.

[0017] According to one embodiment of the utility model, the cross sections of the first sealing ring and the second sealing ring are circular or rectangular.

[0018] According to one embodiment of the utility model, the cross sections of the first sealing ring and the second sealing ring are the same.

[0019] The utility model discloses a second aspect of motor controller, including the motor controller shell of the utility model first aspect.

[0020] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the present inventive subject matter thereto. Like reference numerals have been used throughout the drawings to denote like parts. Among other things:

[0022] Figure 1 is a structural schematic diagram of a motor controller shell according to an embodiment of the present application.

[0023] Figure 2 is an exploded structural schematic diagram of a motor controller shell according to an embodiment of the present application.

[0024] Figure 3 is a side view of a lower shell according to an embodiment of the present application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1 - upper cover, 2 - lower shell, 3 - first sealing ring, 4 - second sealing ring, 5 - drain port, 6 - drain groove, 7 - sealing groove, 21 - first top surface, 22 - second top surface, 61 - first bottom surface. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the drawing figures to designating the same or like components. The embodiments described below are exemplary and are not intended to limit the present inventive subject matter, as the present inventive subject matter is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.

[0028] Reference will now be made to Figures 1 to 3 , which describes a motor controller shell according to embodiments of the present application.

[0029] In conjunction with Figures 1 to 3 , a motor controller shell according to embodiments of the present application is provided, which includes: an upper cover 1, a lower shell 2, a first sealing ring 3, and a second sealing ring 4. The lower shell 2 is arranged opposite to the upper cover 1, and the lower shell 2 and the upper cover 1 are connected by fasteners. The lower shell 2 is provided with two layers of sealing grooves 7. The first sealing ring 3 and the second sealing ring 4 are arranged in the sealing grooves 7, the first sealing ring 3 is close to the inner wall of the motor controller shell, and the second sealing ring 4 is close to the outer wall of the motor controller shell.

[0030] The upper cover 1 and the lower shell 2 provide a physical barrier for the devices inside the motor controller. The specific type of the upper cover 1 and the lower shell 2 is set according to actual needs, and is not limited, for example, the lower shell 2 can be approximately cuboid in shape, and the lower shell 2 includes a plurality of plate bodies, which can be connected by welding, bolting, buckling or the like to form the lower shell 2 with a cavity inside.

[0031] It should be noted that, Figures 1 to 3 The motor controller shell shown in the figure is only a part of the entire motor controller shell for intuitive display. The first sealing ring 3 and the second sealing ring 4 are designed independently of each other and are responsible for different sealing functions, aiming to provide double protection. The double-layer sealing ring provides a redundancy mechanism, so that even if one layer of sealing fails, the other layer can still maintain the sealing effect and more effectively block the passage of liquid or gas. The first sealing ring 3 on the inner side is made of high-elasticity material, which can effectively prevent liquid or moisture from penetrating and improve the waterproof performance of the controller. The second sealing ring 4 on the outer side is made of high-temperature-resistant and corrosion-resistant material, which can effectively block the erosion of external dust and chemicals and improve the durability and stability of the motor controller.

[0032] The cross-sectional shape of the sealing groove 7 is set according to actual needs and can be semicircular or rectangular. For example, the cross-section of the sealing groove 7 is rectangular, which is convenient to process.

[0033] The specific type of the first sealing ring 3 and the second sealing ring 4 is set according to actual needs, and is not limited. For example, the cross-section of the first sealing ring 3 and the second sealing ring 4 is circular or rectangular, which is easy to install and has low cost. In one example, the cross-sectional shape of the first sealing ring 3 and the second sealing ring 4 is the same, which is cost-effective and has good durability. The material of the first sealing ring 3 and the second sealing ring 4 is set according to actual needs, and is not limited. For example, the first sealing ring 3 can be made of AEM (ethylene-acrylic ester rubber), fluorosilicone rubber, etc.; and the second sealing ring 4 can be made of EPDM (ethylene-propylene-diene rubber) or other rubber materials.

[0034] According to the motor controller shell of the embodiment of the utility model, by adopting the double-layer sealing design, the second sealing ring on the inner layer is made of high-elasticity material, which can effectively prevent liquid or moisture from penetrating and improve the waterproof performance of the motor controller; and the first sealing ring on the outer layer is made of high-temperature-resistant and corrosion-resistant material, which can effectively block the erosion of external dust and chemicals, has the advantages of good sealing effect, and can improve the durability and stability of the motor controller.

[0035] For example, Figure 2As shown, in some embodiments, the top surface of the lower housing 2 is divided into a first top surface 21 and a second top surface 22 from the outside to the inside. The first top surface 21 slopes downward and forms an angle with the second top surface 22. The gap between the first top surface 21 and the bottom surface of the upper cover 1 forms a drain outlet 5. The downward slope of the first top surface 21 can effectively prevent the retention of water and steam, and promote their rapid discharge.

[0036] Combination Figure 2 and Figure 3 As shown, to further improve the drainage speed of accumulated liquid, multiple drainage channels 6 are provided on the first top surface 21. The drainage channels 6 are connected to the sealing groove 7 near the outer wall of the motor controller housing. When there is a large amount of accumulated liquid at the drain outlet 5, the accumulated liquid can be discharged from both the drain outlet 5 and the drainage channels 6 simultaneously. The number and cross-sectional shape of the drainage channels 6 are set according to actual needs and are not limited thereto. In one example, the cross-section of the drainage channel 6 is rectangular, and the bottom surface of the drainage channel 6 is the first bottom surface 61, which forms an angle with the second top surface 22. The angle between the first bottom surface 61 and the second top surface 22 is greater than the angle between the first top surface 21 and the second top surface 22, which not only accelerates the flow rate of the accumulated liquid and improves the drainage efficiency, but also prevents dust accumulation, facilitating later cleaning and maintenance.

[0037] like Figure 3 As shown, the angle between the first bottom surface 61 and the side of the sealing groove 7 is set according to actual needs. For example, the angle between the first bottom surface 61 and the side of the sealing groove 7 is 90 to 150 degrees.

[0038] This utility model embodiment also proposes a motor controller, including a motor controller housing as described in this utility model embodiment.

[0039] The motor controller of this invention uses a double-layer sealing design, which has a higher level of sealing effect compared to a single sealing structure. It can effectively protect the internal components of the motor controller from damage or functional failure caused by harsh environments, or even complete failure. At the same time, this invention is designed with an effective drainage structure to prevent liquid accumulation. When the external liquid pressure is too high and the outer sealing ring fails, the inner sealing ring can also effectively protect the internal parts and components of the motor controller from being affected, and can maintain effective operation in harsh environments.

[0040] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through the intermediate medium, can be the communication of two elements or the interaction of two elements, unless another definite limitation.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.

[0042] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium.Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0043] In the description of the utility model, the orientation or position relationship indicated by the terms "left", "right", "front", "back" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0044] Any process or method descriptions in the flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing specific logic functions or steps, and the various embodiments of the utility model include additional implementation in which the functions are performed in a different order, including substantially simultaneously, or in reverse order, as will be understood by those skilled in the art of the embodiments to which the utility model pertains.

[0045] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" 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 illustrative description of the above terms does not necessarily refer to the same embodiment or example.Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An electric machine controller housing characterized by, The motor controller housing comprises: an upper cover (1); a lower shell (2) disposed opposite to the upper cover (1), the lower shell (2) is connected with the upper cover (1) by fasteners, and two layers of sealing grooves (7) are arranged on the lower shell (2); a first sealing ring (3) and a second sealing ring (4) arranged in the sealing groove (7), the first sealing ring (3) is close to the inner wall of the motor controller housing, and the second sealing ring (4) is close to the outer wall of the motor controller housing.

2. The motor controller housing of claim 1, wherein, The top surface of the lower shell (2) is divided into a first top surface (21) and a second top surface (22) from outside to inside, the first top surface (21) is inclined downward and has an included angle with the second top surface (22), and the gap between the first top surface (21) and the bottom surface of the upper cover (1) forms a drainage port (5).

3. The motor controller housing of claim 2, wherein, A plurality of drainage grooves (6) are arranged on the first top surface (21), and the drainage grooves (6) are communicated with the sealing grooves (7) close to the outer wall of the motor controller housing.

4. The motor controller housing of claim 3, wherein, The cross section of the drainage groove (6) is rectangular, the bottom surface of the drainage groove (6) is a first bottom surface (61), and the first bottom surface (61) has an included angle with the second top surface (22).

5. The motor controller housing of claim 4, wherein, The included angle between the first bottom surface (61) and the second top surface (22) is greater than the included angle between the first top surface (21) and the second top surface (22).

6. The motor controller housing of claim 5, wherein, The cross section of the sealing groove (7) is rectangular, and the included angle between the first bottom surface (61) and the side surface of the sealing groove (7) is 90-150 degrees.

7. The motor controller housing of claim 1, wherein, The cross section of the first sealing ring (3) and the second sealing ring (4) is circular or rectangular.

8. The motor controller housing of claim 7, wherein, The cross sections of the first sealing ring (3) and the second sealing ring (4) are the same.

9. An electric machine controller characterized by The motor controller housing of any one of claims 1-8 is included.

Images