Motor inverter box body and motor inverter

Abstract

The utility model provides a motor inverter box body and a motor inverter, the motor inverter box body comprises a main box body, the main box body comprises a plurality of side walls and a bottom plate which are integrally formed, the side walls and the bottom plate enclose a cavity, and one side wall is provided with an opening; and the wiring cover is arranged opposite to the opening, and the wiring cover is detachably connected with the main box body. According to the motor inverter box body provided by the utility model, the box body is divided into two independent parts, namely the detachable main box body and the wiring cover, and the wiring covers with different wiring harness connection modes can be connected with the same main box body to form one motor inverter box body, so that the main box body based on the same inverter can be compatible with various wiring covers; the space layout of the motor inverter can be flexible, high-efficiency design, production, maintenance and other links are realized, and the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor control, in particular to a motor inverter box and a motor inverter. Background Art

[0002] The automotive motor inverter, commonly known as the electric vehicle inverter or electric vehicle inverter, is a key component in the electric vehicle power system. The main function of the inverter is to convert the DC power stored in the battery pack into the AC power required to drive the motor. This process is crucial for the efficient operation of electric vehicles.

[0003] In the prior art, for inverters of the same series but different power levels, the entire box needs to have the same external dimensions and the same installation and fixing points so as to be compatible with the same motor, frame, axle and other mechanisms that can be installed in the vehicle.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art: inverters of the same series but different power levels need to be compatible with wiring harness connection and high-voltage connector connection. If two different motor inverters are designed according to the two connection methods of wiring harness and high-voltage connector respectively, it will cause problems such as increased cost, complex design, and reduced production efficiency. Utility Model Content

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

[0006] To this end, the purpose of the utility model is to propose a motor inverter box and a motor inverter, which are based on the same inverter main box and can be compatible with a variety of matching wiring covers, and flexibly adjust the layout of the motor inverter to achieve the purpose of reducing costs and increasing efficiency.

[0007] In order to achieve the above-mentioned object, the first aspect of the utility model provides a motor inverter box, comprising:

[0008] A main box body, the main box body comprising a plurality of integrally formed side walls and a bottom plate, the side walls and the bottom plate enclosing a cavity, wherein one of the side walls is provided with an opening;

[0009] A wiring cover is arranged opposite to the opening, and the wiring cover is detachably connected to the main box body.

[0010] The motor inverter case of the utility model is divided into two independent parts, a detachable main case and a wiring cover. The wiring covers with different wiring harness connection methods can be connected to the same main case to form a motor inverter case, so that the same inverter main case can be compatible with a variety of wiring covers, and the motor inverter can be flexibly arranged in space, realizing high-efficiency design, production, maintenance and other links, thereby achieving the purpose of reducing costs and increasing efficiency.

[0011] According to an embodiment of the utility model, a plurality of threaded holes are arranged around the end surface of the side wall where the opening is located, and a plurality of through holes adapted to the threaded holes are provided on the wiring cover.

[0012] According to an embodiment of the utility model, two separated positioning pins are provided on the end surface of the side wall where the opening is located, and pin holes adapted to the positioning pins are provided on the wiring cover.

[0013] According to an embodiment of the utility model, a low-voltage connector hole and an AC harness hole are provided on another side wall opposite to the side wall where the opening is located.

[0014] According to an embodiment of the utility model, a positive wiring harness hole and a negative wiring harness hole are provided on the wiring cover.

[0015] According to an embodiment of the utility model, two opposite edges of the main box body are provided with lifting ears.

[0016] According to an embodiment of the utility model, the bottom plate is provided with a boss protruding upward, and the top surface of the boss is provided with copper row holes.

[0017] According to an embodiment of the utility model, the bottom plate is provided with a motor connection port, and the projection of the copper row hole on the bottom plate is located within the motor connection port.

[0018] According to an embodiment of the present utility model, the main box body extends outward to form a plurality of connecting parts, and mounting holes are provided in the connecting parts.

[0019] A second aspect of the present invention provides a motor inverter, comprising the motor inverter box as described in the first aspect.

[0020] The motor inverter of the utility model has the advantage of flexible and changeable space layout due to the use of the motor inverter box of the first aspect.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0023] Figure 1It is a structural schematic diagram of a main box of a motor inverter proposed in one embodiment of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the back side of the main box of the motor inverter according to one embodiment of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the bottom surface of the main box of the motor inverter according to one embodiment of the utility model.

[0026] Figure 4 It is a structural schematic diagram of a motor inverter box proposed in one embodiment of the utility model.

[0027] Figure 5 yes Figure 4 A schematic diagram of the structure of the wiring cover of the motor inverter box is involved.

[0028] Figure 6 It is a structural schematic diagram of a motor inverter box proposed in another embodiment of the utility model.

[0029] Figure 7 yes Figure 6 A schematic diagram of the structure of the wiring cover of the motor inverter box is involved.

[0030] Description of reference numerals:

[0031] 1-main box, 2-first wiring cover, 3-second wiring cover, 101-opening, 102-threaded hole, 103-locating pin, 104-mounting hole, 105-pressure relief hole, 106-low voltage connector hole, 107-lifting ear, 108-AC wiring harness hole, 109-reinforcement rib, 111-copper busbar hole, 112-motor connection port, 201-first positive wiring harness hole, 202-first negative wiring harness hole, 203-first pin hole, 204-first through hole, 205-first recessed portion, 301-second positive wiring harness hole, 302-second negative wiring harness hole, 303-second pin hole, 304-second through hole. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0033] Combination Figure 1-Figure 7 As shown, an embodiment of the utility model provides a motor inverter box, including a main box 1 and a wiring cover.

[0034] The main box body 1 comprises a plurality of integrally formed side walls and a bottom plate, the side walls and the bottom plate enclose a cavity, and one of the side walls is provided with an opening 101. The wiring cover (2; 3) is arranged opposite to the opening 101, and the wiring cover is detachably connected to the main box body 1.

[0035] The main box body 1 and the wiring cover (2; 3) can be made of the same material or different materials. Exemplarily, the main box body 1 and the wiring cover are made of ADC12 aluminum alloy. The number of side walls of the main box body is designed according to actual needs and is not limited to this. Exemplarily, the number of side walls is 4. The cavity can be used to install power modules, copper busbars and other components. The size of the opening is designed according to actual needs and is not specifically limited to this. The wiring cover is used to pass the DC wiring harness. The main box body 1 and the wiring cover can be connected by bolt fixing, snap fixing, etc. The fitting surface of the main box body 1 and the wiring cover is a sealed connection. Exemplarily, the fitting surface of the main box body 1 or the wiring cover is provided with a glue groove, and the glue groove is filled with sealing material.

[0036] The motor inverter case of the embodiment of the utility model is divided into two independent parts: a detachable main case and a wiring cover. The wiring covers with different wiring harness connection methods can be connected to the same main case to form a motor inverter case, thereby achieving compatibility with a variety of wiring covers based on the same inverter main case. Therefore, the motor inverter can flexibly adjust its spatial layout, realize high-efficiency design, production, maintenance and other links, and achieve the purpose of reducing costs and increasing efficiency.

[0037] In some embodiments, a plurality of threaded holes 102 are arranged around the end surface of the side wall where the opening 101 is located, and a plurality of through holes matching the threaded holes 102 are arranged on the wiring cover. Fasteners are passed through the through holes and threadedly connected to the threaded holes 102 to complete the connection between the wiring cover and the main box body 1.

[0038] In order to align and fix the wiring cover and the main box 1 and simplify the assembly process, the end surface of the side wall where the opening 101 is located is provided with two separated positioning pins 103, and the wiring cover is provided with pin holes adapted to the positioning pins 103.

[0039] A low-voltage connector hole 106 and an AC harness hole 108 are provided on the other side wall opposite to the side wall where the opening 101 is located. The low-voltage connector hole 106 is used to pass through the low-voltage connector, which is responsible for transmitting the low-voltage DC power in the battery pack to the motor inverter. The AC harness hole 108 is used to pass through the AC harness, which is mainly responsible for transmitting AC power to drive the motor. In one example, the AC harness hole 108 is located at the bottom of the low-voltage connector hole 106, which is conducive to saving space.

[0040] The wiring cover is provided with positive and negative wiring harness holes. The number and arrangement of the positive and negative wiring harness holes are designed according to the different wiring harness connection methods. The positive and negative wiring harness holes are used to pass through the DC wiring harness. The DC wiring harness is responsible for transmitting the DC power in the battery pack to the motor inverter. The connection between the DC wiring harness and the wiring cover should be properly sealed and protected to prevent moisture, dust and other contaminants from entering, protecting the electrical system from corrosion and short circuit risks.

[0041] Lifting ears 107 are provided on two opposite edges of the main housing 1. The lifting ears provide a firm fixing point, which facilitates moving the motor inverter to a specified position.

[0042] The bottom plate is provided with a boss protruding upward, and the top surface of the boss is provided with a copper busbar hole 111. The copper busbar hole 111 is used to pass through the AC copper busbar, which is a key component for power transmission, transmitting power from the motor controller to the drive motor. The bottom plate is provided with a motor connection port 112, and the projection of the copper busbar hole 111 on the bottom plate is located within the motor connection port 112. In other words, the AC copper busbar can pass through the copper busbar hole 111 and the motor connection port 112 and then be connected to the terminal on the top surface of the motor.

[0043] In addition, the main box body 1 extends outward to form a plurality of connection parts, and a mounting hole 104 is provided in the connection part. The mounting hole 104 is used to connect to the drive motor. A side wall of the main box body 1 is also provided with a reinforcing rib 109, which can improve the rigidity and strength of the box body. In one example, the reinforcing rib 109 is designed as a hexagonal honeycomb structure, which helps to reduce noise and vibration caused by external impact or vibration. A side wall of the main box body 1 is also provided with a pressure relief hole 105, in which a pressure relief valve can be installed. The pressure relief valve has a sensitive pressure sensing mechanism and a rapid response capability. It can be opened in a short time and discharge the internal high-pressure gas to ensure safety in use.

[0044] Based on the above purpose, an embodiment of the utility model further provides a motor inverter, including the above motor inverter box.

[0045] The motor inverter of the embodiment of the utility model has the advantage of flexible and changeable spatial layout.

[0046] Two specific embodiments are given below to further illustrate the above implementation mode:

[0047] Example 1

[0048] Combination Figure 4 , Figure 5As shown, this embodiment proposes a motor inverter case, including a main case 1 and a first wiring cover 2. Two first positive wiring harness holes 201 and two first negative wiring harness holes 202 are provided on the first wiring cover 2. The two first positive wiring harness holes 201 are arranged side by side, and the two first negative wiring harness holes 202 are arranged side by side, and are located below the first positive wiring harness holes 201. The first wiring cover 2 has a cylinder at the position of the first positive wiring harness hole 201 and the first negative wiring harness hole 202. These cylinders can be connected together by reinforcing ribs, and the structure of the cylinder is connected to the DC wiring harness through a connector in the form of a gland. The main function of the gland is to provide a seal to ensure that the wiring harness hole does not become an entrance for moisture and contaminants.

[0049] The first wiring cover 2 has a first pin hole 203 and a first through hole 204 at its edge for positioning and connecting with the main box 1. The first wiring cover 2 has a first recess 205 at one side close to the main box 1 for mounting a magnetic ring.

[0050] Example 2

[0051] Combination Figure 6 , Figure 7 As shown, this embodiment provides a motor inverter box, including a main box 1 and a second wiring cover 3. The difference from the first embodiment is that the second wiring cover 3 is provided with two second positive wiring harness holes 301 and two second negative wiring harness holes 302 arranged in a line. The second positive wiring harness hole 301 and the second negative wiring harness hole 302 are surrounded by threaded holes for installing high-voltage connectors.

[0052] A second pin hole 303 and a second through hole 304 are provided on the edge of the second wiring cover 3 for positioning and connecting with the main box body 1 .

[0053] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0057] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0058] In the description of this specification, the description with reference to 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 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.

[0059] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A motor inverter box, characterized in that: include: A main box body (1), the main box body (1) comprising a plurality of integrally formed side walls and a bottom plate, the side walls and the bottom plate enclosing a cavity, wherein one of the side walls is provided with an opening (101); A wiring cover is arranged opposite to the opening (101), and the wiring cover is detachably connected to the main box body (1).

2. The motor inverter box according to claim 1, characterized in that: A plurality of threaded holes (102) are arranged around the end surface of the side wall where the opening (101) is located, and a plurality of through holes matching the threaded holes (102) are provided on the wiring cover.

3. The motor inverter box according to claim 1, characterized in that: The end surface of the side wall where the opening (101) is located is provided with two separated positioning pins (103), and the wiring cover is provided with pin holes adapted to the positioning pins (103).

4. The motor inverter box according to claim 1, characterized in that: A low-voltage connector hole (106) and an AC harness hole (108) are provided on another side wall opposite to the side wall where the opening (101) is located.

5. The motor inverter box according to claim 1, characterized in that: The wiring cover is provided with a positive wiring harness hole and a negative wiring harness hole.

6. The motor inverter box according to claim 1, characterized in that: Two opposite edges of the main box body (1) are provided with lifting ears (107).

7. The motor inverter box according to claim 1, characterized in that: The bottom plate is provided with a boss protruding upwards, and the top surface of the boss is provided with a copper row hole (111).

8. The motor inverter box according to claim 7, characterized in that: The bottom plate is provided with a motor connection port (112), and the projection of the copper row hole (111) on the bottom plate is located within the motor connection port (112).

9. The motor inverter box according to any one of claims 1 to 8, characterized in that: The main box body (1) extends outward to form a plurality of connection parts, and mounting holes (104) are provided in the connection parts.

10. A motor inverter, characterized in that: A motor inverter box comprising any one of claims 1 to 9.

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