Wiring unit of compressor

Abstract

Proposed is a wiring unit of a compressor, the wiring unit comprising: a connection terminal electrically connecting an inverter and a motor of the compressor; a busbar frame positioned between the connection terminal and the motor, having a coupling part to which the connection terminal is coupled, and having a linear connection part extending from the coupling part; and a power terminal having one end seated on the coupling part to be assembled to the connection terminal, and the other end extending from the one end along the connection part, the power terminal being coupled to the busbar frame through a fixing part formed at the other end, wherein the power terminal is assembled to the busbar frame such that the one end thereof has a clearance with respect to the busbar frame and vibrates on the busbar frame about the fixing part, and does not vibrate on the busbar frame if the connection terminal is assembled to the one end of the power terminal.

Description

Compressor wiring unit

[0001] The present disclosure relates to the structure and assembly method of a terminal for electrical connection between a motor and an inverter for an electric compressor.

[0002]

[0003] In electric compressors, the terminal structure and assembly are critical elements for the electrical connection between the motor and the inverter. The electric compressor is responsible for compressing the refrigerant, and the motor and inverter must be precisely connected for high-efficiency power transmission. Terminals and busbars are used for this connection, with terminals serving to transmit electrical signals and current. In particular, hermetic terminals ensure a stable electrical connection between the motor and the inverter by providing insulation while simultaneously energizing the system. The assembly of busbars and terminals must be designed not only for electrical connection but also to maintain stable performance even in the high-vibration environments of vehicles.

[0004] Conventional technology utilizes hermetic terminals for the electrical connection between the motor and the inverter. Hermetic terminals serve to provide both electrical conduction and insulation, thereby enabling the connection between the stator and the inverter. Busbars are used for electrical connection and are critical components for linking the stator and the inverter. Busbars are generally designed to accommodate multiple terminals and facilitate the transfer of current between the stator coils and the inverter.

[0005] However, existing technologies present various problems with the connection structure of these busbars and terminals. In particular, due to the structural characteristics of automotive compressors, the motor-inverter connection is coaxially integrated; consequently, there is a requirement that refrigerant and oil flow into the motor while preventing these substances from entering the inverter. Consequently, when using hermetic terminals, a problem arises in that conflicting requirements for positional freedom and vibration suppression must be satisfied simultaneously. Excessive vibration or positional misalignment can lead to insulation breakdown or coil disconnection at the electrical connection points.

[0006] To solve these problems, technology is required that can simultaneously satisfy precise positioning of busbars and terminals as well as vibration suppression. To ensure stable operation in the high-vibration environment of a vehicle, the electrical connection points between the motor stator and the inverter must provide high vibration resistance and insulation performance. Furthermore, the position must be fixed after assembly, and the design must prevent the terminals from moving. Meeting these technical requirements necessitates a more sophisticated structure and assembly method.

[0007]

[0008] The matters described as background technology above are intended only to enhance understanding of the background of the present disclosure and do not constitute prior art already known to those skilled in the art.

[0009]

[0010] The present disclosure is proposed to solve these problems and aims to provide a technology capable of simultaneously achieving positional degrees of freedom of the terminal and suppression of false vibrations by improving the terminal structure and assembly method to maintain a stable electrical connection even in high-vibration environments in electric compressors.

[0011] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] A connection unit of a compressor according to the present disclosure for achieving the above objective comprises: a connection terminal that electrically connects the inverter and the motor of the compressor; a busbar frame located between the connection terminal and the motor, having a coupling portion provided to connect the connection terminal, and having a linear connection portion extended from the coupling portion; and a power terminal, one end of which is seated on the coupling portion and assembled with the connection terminal, and the other end of which extends along the connection portion from the one end and is coupled to the busbar frame through the fixing portion formed at the other end; wherein the power terminal is assembled with the one end having a gap in the busbar frame and vibrates on the busbar frame around the fixing portion, and may not vibrate on the busbar frame when the connection terminal is assembled to the one end of the power terminal.

[0014] In the wiring unit of the compressor according to the present disclosure, the power terminal is provided with a coil crimping portion, and the coil crimping portion may be provided to protrude outwardly at a point between one end of the power terminal and the fixed portion.

[0015] In the wiring unit of the compressor according to the present disclosure, when the connecting terminal is not assembled while one end of the power terminal is seated on the connecting portion of the busbar frame, the coil crimping portion vibrates, and when the connecting terminal is assembled, the coil crimping portion may not vibrate.

[0016] In the connection unit of the compressor according to the present disclosure, the coil crimping portion is provided in a plurality of portions, and the plurality of coil crimping portions may be spaced apart from each other along the direction in which the connection portion extends from the outside of the power terminal.

[0017] In the wiring unit of the compressor according to the present disclosure, the power terminal can have one end vibrated on the coupling part and the other end vibrated on the connection part by having the fixed part supported at one point on the busbar frame.

[0018] In the wiring unit of the compressor according to the present disclosure, the power terminal can vibrate in a direction perpendicular to the direction in which the connection terminal is assembled.

[0019] The wiring unit of the compressor according to the present disclosure is such that the connection terminal is coupled to the coupling part while one end of the power terminal is seated on the busbar frame, and when the connection terminal is coupled, the one end or the other end of the power terminal is supported at two points by the connection terminal and the fixing part so as not to vibrate.

[0020] In the wiring unit of the compressor according to the present disclosure, a fixing pin is provided in the busbar frame, and the fixing part of the power terminal can be coupled with the fixing pin and coupled with the busbar frame.

[0021] In the wiring unit of the compressor according to the present disclosure, the power terminal is supported at one point centered on the fixing pin when the connection terminal is not assembled at one end and vibrates on the busbar frame, and when the connection terminal is assembled, it is supported at two points centered on the coupling part and the fixing pin and may not vibrate.

[0022] In the wiring unit of the compressor according to the present disclosure, the coupling portion of the busbar frame is provided with a plurality of coupling holes to which the connection terminal is coupled, and the connection portion is formed with a connection groove to which the power terminal is seated, and the power terminal may have one end seated in the coupling hole and the other end extending from the one end along the connection groove.

[0023] The wiring unit of the compressor according to the present disclosure is provided with a protrusion between the coupling hole and the connection groove of the busbar frame, and the protrusion may protrude upward from the connection groove and be connected to each of the plurality of coupling holes.

[0024] In the wiring unit of the compressor according to the present disclosure, the power terminal has a bent portion formed at a point corresponding to the protrusion of the busbar frame, and the bent portion is bent upward along the protrusion of the power terminal and can be supported by the protrusion of the busbar frame.

[0025] In the wiring unit of the compressor according to the present disclosure, a socket portion is formed at one end of the power terminal, the socket portion is inserted into the coupling hole of the busbar frame, and the connection terminal can be inserted into the socket portion and assembled.

[0026] In the wiring unit of the compressor according to the present disclosure, the coupling portion and the connection portion of the busbar frame are formed on both sides of the busbar frame, and the power terminal may be coupled to either side of the busbar frame.

[0027] In the wiring unit of the compressor according to the present disclosure, the power terminal is provided in a plurality of phases, some of the plurality of phases are coupled to one side of the busbar frame, and the remaining phases are coupled to the other side of the busbar frame.

[0028] In the wiring unit of the compressor according to the present disclosure, the power terminal is provided in three phases, and one of the three phases is connected to one side of the busbar frame, and the remaining two phases can be connected to the other side.

[0029] In the connection unit of the compressor according to the present disclosure, the connection portion of the busbar frame is provided in a circular shape, and the three phases are formed in a semicircular shape and can be connected in a semicircular shape to one side or the other end of the busbar frame.

[0030] The wiring unit of the compressor according to the present disclosure comprises, wherein the power terminal further includes a neutral terminal, and the neutral terminal is coupled to one side of the busbar frame, and both ends of the neutral terminal are provided with fixing parts so that it can be supported at two points on one side of the busbar frame through the fixing parts.

[0031] The wiring unit of a compressor according to the present disclosure comprises, wherein the connecting terminal includes a plurality of conductor rods and the conductor rods are coupled to the coupling portion of the busbar frame, and the power terminal can be fixed to the busbar frame by the conductor rods being coupled to the coupling portion while one end of the power terminal is seated on the coupling portion of the busbar frame.

[0032] In the connection unit of the compressor according to the present disclosure, the connection terminal is provided with a body plate, and a plurality of conductor rods are spaced apart from each other and penetrate the body plate, and an insulator may be injected between the plurality of conductor rods and the body plate to be joined.

[0033]

[0034] According to the wiring unit of the compressor of the present disclosure, the vibration of the terminal can be prevented in a high-vibration environment while maintaining the positional freedom of the terminal, thereby ensuring a stable electrical connection between the motor and the inverter. This prevents the problem of disconnection of the busbar and coil and prevents abnormal heating of the electrical connection points even in high-vibration situations, thereby providing efficient system operation.

[0035] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0036]

[0037] FIG. 1 is a diagram showing the combined relationship between the wiring unit, motor, and inverter of the compressor of the present disclosure according to one embodiment.

[0038] FIG. 2 is a drawing showing a wiring unit of a compressor illustrated in FIG. 1 of the present disclosure according to one embodiment.

[0039] FIG. 3 is an exploded perspective view of the wiring unit of the compressor shown in FIG. 2 of the present disclosure according to one embodiment.

[0040] FIG. 4 is a drawing showing the structure of a connection terminal illustrated in FIG. 2 of the present disclosure according to one embodiment.

[0041] FIG. 5 is a diagram showing the combined relationship of the connection terminal, busbar frame, and power terminal illustrated in FIG. 2 of the present disclosure according to one embodiment.

[0042] FIG. 6 is a drawing showing a state in which a power terminal and a neutral terminal are combined on one surface of a busbar frame illustrated in FIG. 5 of the present disclosure according to one embodiment.

[0043] FIG. 7 is a drawing showing a state in which a plurality of power terminals are coupled to the other side of the busbar frame shown in FIG. 5 of the present disclosure according to one embodiment.

[0044] FIG. 8 is a drawing showing the state in which the power terminal illustrated in FIG. 5 of the present disclosure according to one embodiment is coupled to the connection portion of the busbar frame with a gap.

[0045] FIG. 9 is a drawing showing the state in which the power terminal illustrated in FIG. 5 of the present disclosure according to one embodiment is coupled to the joint portion of the busbar frame with a gap.

[0046] FIGS. 10 and 11 are drawings showing the shape of a power terminal of the present disclosure according to one embodiment.

[0047]

[0048] In describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the embodiments disclosed in this specification. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of this disclosure. The disclosure below is not intended to limit this disclosure to the described form or specific field, and it is considered that various alternative modes and modifications to this disclosure are possible, whether explicitly stated or implied in this specification. Those skilled in the art will recognize that the form and details of this disclosure may change.

[0049] The present disclosure is described with reference to specific embodiments. However, as understood by those skilled in the art to which the present disclosure pertains, the various embodiments disclosed herein may be modified or otherwise implemented in various other ways without departing from the spirit and scope of the present disclosure. Accordingly, the following description should be considered illustrative and is intended to teach those skilled in the art to the manner in which various embodiments are made and used. It will be understood that the forms of the disclosure shown and described herein are to be taken as representative embodiments. Equivalent elements, or materials, processes, or steps may be substituted for those representatively exemplified and described in the present disclosure. Expressions used in describing the present disclosure, such as "including," "comprising," "incorporating," "consisting of," "have," "is," etc., should be interpreted as allowing items, components, or elements not explicitly described to be indicated in a non-exclusive manner, i.e., to be indicated. In addition, references to the singular should be interpreted as including those related to the plural.

[0050] Furthermore, the various embodiments disclosed herein should be accepted as illustrative and descriptive and should not be interpreted as limiting the content of the disclosure. All references to joining (e.g., attached, affixed, coupled, connected, etc.) are used solely to aid in understanding the disclosure and are not intended to limit the location, orientation, or use of the configuration or the methods disclosed herein. Accordingly, where joining references exist, they should be interpreted broadly. Moreover, in such joining references, it is not assumed that two or more elements are directly connected to each other. Additionally, all numeric terms, e.g., "first," "second," "third," "primary," "secondary," "major," or any other general or numeric terms, are to be taken solely as identifiers to aid in understanding the various components, forms, variations, or modifications of the present disclosure and are not to imply any limitation to any component, form, variation, or modification, or to any order or preference thereof. That is, while such expressions may be used to describe various components, the components are not limited by such expressions. Such expressions are used solely for the purpose of distinguishing one component from another.

[0051] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0052] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0053] Furthermore, the terms "Unit" or "Control Unit" included in the name are merely terms widely used to name controllers that control specific vehicle functions, and do not refer to generic function units.

[0054] A controller may include a communication device that communicates with other controllers or sensors to control the function it is responsible for, a memory that stores an operating system, logic instructions, and input / output information, and one or more processors that perform judgments, calculations, decisions, etc., necessary for controlling the function it is responsible for.

[0055] Any number of components or various components in any configuration described herein may be included within the disclosure described herein. Components may include any combination of features described herein and may be arranged in any configuration among the various configurations described herein. Concepts regarding the structure and arrangement of the components of the disclosure, as well as their use and operation, may be applied to any number of embodiments in any combination, as well as to specific embodiments discussed herein. Embodiments including those having various features of various arrangements are described below with reference to the drawings.

[0056]

[0057] FIG. 1 is a diagram showing the combined relationship between the wiring unit of the compressor according to one embodiment, the motor, and the inverter of the present disclosure; FIG. 2 is a diagram showing the wiring unit of the compressor illustrated in FIG. 1 of the present disclosure according to one embodiment; FIG. 3 is an exploded perspective view of the wiring unit of the compressor illustrated in FIG. 2 of the present disclosure according to one embodiment; FIG. 4 is a diagram showing the structure of the connection terminal illustrated in FIG. 2 of the present disclosure according to one embodiment; FIG. 5 is a diagram showing the combined relationship between the connection terminal, the busbar frame, and the power terminal illustrated in FIG. 2 of the present disclosure according to one embodiment; FIG. 6 is a diagram showing the state in which a power terminal and a neutral terminal are coupled to one surface of the busbar frame illustrated in FIG. 5 of the present disclosure according to one embodiment; FIG. 7 is a diagram showing the state in which a plurality of power terminals are coupled to the other surface of the busbar frame illustrated in FIG. 5 of the present disclosure according to one embodiment; and FIG. 8 is FIG. 5 of the present disclosure according to one embodiment FIG. 9 is a drawing showing a state in which the illustrated power terminal is coupled with a connection portion of a busbar frame with a gap, FIG. 5 is a drawing showing a state in which the power terminal illustrated in FIG. 5 of the present disclosure according to one embodiment is coupled with a connection portion of a busbar frame with a gap, FIG. 10 to FIG. 11 are drawings showing the shape of the power terminal of the present disclosure according to one embodiment.

[0058] Hereinafter, various embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0059]

[0060] In electric compressors, the electrical connection between the motor and the inverter is critical for high-efficiency power transmission; however, conventional technology utilizes hermetic terminals and busbars to transmit current and electrical signals. Nevertheless, in the high-vibration environment of vehicles, the connection structure between the motor and the inverter struggles to simultaneously satisfy requirements for positional degrees of freedom and vibration suppression. Consequently, excessive vibration or positional misalignment can lead to insulation breakdown or short circuits. Therefore, sophisticated structural design and assembly techniques are required to simultaneously achieve vibration suppression and precise position fixation.

[0061] To solve these problems, the present disclosure presents a technology that improves the terminal structure and assembly method to maintain a stable electrical connection even in high-vibration environments in electric compressors, thereby simultaneously achieving positional degrees of freedom of the terminal and suppression of false vibrations.

[0062]

[0063] Specifically, the wiring unit (WU) of the compressor (100) of the present disclosure will be described with reference to FIGS. 1 to 3.

[0064] In one embodiment, the wiring unit (WU) of the compressor (100) of the present disclosure may include a connection terminal (300), a busbar frame (500), and a power terminal (700). Specifically, the connection terminal (300) may be configured to electrically connect the inverter (120) and the motor (140) of the compressor (100), and the busbar frame (500) may be configured to be located between the connection terminal (300) and the motor (140) and coupled to the connection terminal (300). The busbar frame (500) may be composed of a coupling part (520) and a connection part (540), and the connection terminal (300) may be coupled to the coupling part (520), and a linear connection part (540) extending from the coupling part (520) may be provided. Additionally, the power terminal (700) may be configured such that one end is seated on the coupling part (520) and assembled with the connection terminal (300), and the other end extends from the one end along the connection part (540) and is fixedly coupled to the busbar frame (500) through the fixing part (726, 746, 766, 782, 784) formed on the other end.

[0065] In one embodiment, the power terminal (700) is assembled with one end having a gap (C) on the busbar frame (500) so that it can vibrate on the busbar frame (500) with the fixed part (726, 746, 766, 782, 784) as the center, and when the connecting terminal (300) is assembled on one end of the power terminal (700), it may not vibrate on the busbar frame (500). More specifically, on the busbar frame (500), the power terminal (700) is basically connected by being supported at one point through the fixed part (726, 746, 766, 782, 784), and since it is assembled with a gap (C) in the state of being supported at one point, it can vibrate on the busbar frame (500) with the fixed part (726, 746, 766, 782, 784) as the reference point. However, if a connection terminal (300) is assembled at one end of the power terminal (700), it can be combined with the busbar frame (500) together with the connection terminal (300) without vibrating because it is supported at two points by the fixed part (726, 746, 766, 782, 784) and the connection terminal (300).

[0066] In one embodiment, the power terminal (700) can have one end vibrated on the coupling part (520) and the other end vibrated on the connection part (540) by having the fixed part (726, 746, 766, 782, 784) supported at one point on the busbar frame (500). Specifically, the power terminal (700) can be seated on the connection part (540) of the busbar frame (500) with a gap. Thus, it can vibrate within the gap range, and since one end of the power terminal (700) is seated on the coupling part (520) and the other end is located on the connection part (540), the one end and the other end can vibrate on the coupling part (520) and the connection part (540), respectively.

[0067] In one embodiment, the power terminal (700) may vibrate in a direction perpendicular to the direction in which the connection terminal (300) is assembled. More specifically, the connection terminal (300) may be connected from above to below the power terminal (700) and the busbar frame (500), and the power terminal (700) may vibrate on the connection terminal (300). In this case, the plane on which the power terminal (700) vibrates may vibrate on a plane perpendicular to the direction in which the power terminal (700) is connected. One end of the power terminal (700) may be seated on the connection part (520) and vibrate in the front-rear direction, and the other end may vibrate in the left-right direction on the connection part (540).

[0068] In one embodiment, as shown in FIG. 10, the power terminal (700) is provided with a bending portion (724, 744, 764), and the bending portion (724, 744, 764) acts as an elastic member so that the power terminal (700) can vibrate in the forward and backward directions.

[0069]

[0070] Next, the connection terminal (300) of the present disclosure will be described with reference to FIG. 4.

[0071] In one embodiment, the connection terminal (300) of the present disclosure may be a hermetic terminal. When the connection terminal (300) is a hermetic terminal, it can provide an electrical connection between the inverter (120) and the motor (140) while shielding the refrigerant from flowing into the inverter (120).

[0072] In one embodiment, when the connecting terminal (300) is a hermetic terminal, as shown in FIG. 4, the structure may have multiple conductor rods (320) connected to the body plate (340). Additionally, an insulating material (360), such as ceramic, may be injected into the space between the conductor rods (320) and the body plate (340). More specifically, in the case of the hermetic terminal (300), the conductor rods (320) and the body plate (340) can be fixed by injecting an insulating material (360), such as ceramic, into the empty space between them while the conductor rods (320) are fixed to the body plate (340) through a jig or the like.

[0073] In one embodiment, when the connection terminal (300) is configured as a hermetic terminal in the manner described above, there is a need to precisely align the position of the conductor rod (320) to fix it to the body plate (340), and as a result, mechanical errors or assembly errors may occur during the processing process. Due to these errors, positional tolerance may occur between multiple conductor rods (320), and this positional tolerance ultimately leads to a positional difference between the conductor rods (320), which can affect the performance of the hermetic terminal; therefore, an assembly design to absorb positional tolerance may be required. Accordingly, as described below, the positional tolerance of the conductor rod (320) can be absorbed by utilizing a clearance (C) structure between the busbar frame (500) and the power terminal (700).

[0074] In one embodiment, for the sake of understanding, the connection terminal (300) is described as a hermetic terminal. However, if positional tolerances may occur during the processing process while electrically connecting the inverter (120) and the motor (140) as in the hermetic terminal (300), various types of terminals (300), such as pin-type terminals and lead-type terminals, may be applied in addition to the hermetic terminal.

[0075]

[0076] Referring to FIGS. 5 to 11, the busbar frame (500) and power terminal (700) for absorbing the positional tolerance of the connection terminal (300) as described above will be explained.

[0077] In one embodiment, as shown in FIGS. 5 to 7, the power terminal (700) may be provided with coil compression portions (728, 748, 768, 786). The coil compression portions (728, 748, 768, 786) may be provided to protrude outward at a point between one end of the power terminal (700) and the fixing portions (726, 746, 766, 782, 784). The coil compression portions (728, 748, 768, 786) may be in the form of coils that are raised and fused and compressed.

[0078] In one embodiment, when the power terminal (700) is supported at one point through the fixed parts (726, 746, 766, 782, 784) and vibrates within the busbar frame (500), fine vibrations can also be transmitted to the coil crimping part (728, 748, 768, 786) provided at a point between one end of the power terminal (700) and the fixed parts (726, 746, 766, 782, 784). Because the coil crimping part (728, 748, 768, 786) is in a shape that rises upward due to these fine vibrations, there is a risk that the neck portion of the coil crimping part (728, 748, 768, 786) will be severed by the vibration. Therefore, the power terminal (700) has a conflicting task in that it must vibrate on the busbar frame (500) to absorb the positional tolerance of the connection terminal (300), but at the same time be fixed to prevent the coil crimping part (728, 748, 768, 786) from breaking.

[0079] In one embodiment, when one end of the power terminal (700) is seated on the connecting part (520) of the busbar frame (500) and the connecting terminal (300) is not assembled, the coil crimping part (728, 748, 768, 786) may vibrate. In this case, since the coil crimping part (728, 748, 768, 786) is in a form where coils are fused and crimped upward, there is a risk that the neck part, etc., may easily break. Accordingly, when the connecting terminal (300) is assembled, the power terminal (700) can no longer vibrate inside the busbar frame (500) by fixing the fixing part (726, 746, 766, 782, 784) of the power terminal (700) and the coupling part (520) of the connecting terminal (300) so that the coil compression part (728, 748, 768, 786) does not vibrate.

[0080] In one embodiment, a plurality of coil crimping sections (728, 748, 768, 786) may be provided, and the plurality of coil crimping sections (728, 748, 768, 786) may be spaced apart from each other along the direction in which the connection section (540) extends from the outside of the power terminal (700). The coil crimping sections (728, 748, 768, 786) may be in a form in which the coils rise toward the inverter (120), and accordingly, the coil crimping sections (728, 748, 768, 786) may have a high probability of being disconnected if fine vibrations continue. In order to prevent a situation where multiple coil compression parts (728, 748, 768, 786) are disconnected due to vibration, it may be important to design the power terminal (700) so that vibration caused by play (C) does not occur when the connection terminal (300) is coupled to the busbar frame (500).

[0081]

[0082] In one embodiment, as shown in FIGS. 5 to 7, the connecting terminal (300) can be connected to the connecting part (520) while one end of the power terminal (700) is seated on the busbar frame (500). Regarding the order of connection, the power terminal (700) is first seated on the busbar frame (500) and vibrates with a gap (C), and then the connecting terminal (300) is connected, thereby fixing the vibrating power terminal (700) to the busbar frame (500). By passing the one end of the power terminal (700) through the connecting terminal (300) and fixing it to the busbar frame (500), the power terminal (700) is supported at two points by the fixing part (726, 746, 766, 782, 784) and the connecting terminal (300), respectively, and thus vibration may not occur.

[0083] In one embodiment, as illustrated in FIG. 5, a fixing pin (560) may be provided in the busbar frame (500). The fixing pin (560) may be configured to be coupled to the fixing portion (726, 746, 766, 782, 784) of the power terminal (700), and the power terminal (700) may be supported at one point on the busbar frame (500) by the fixing portion (726, 746, 766, 782, 784) being coupled to the fixing pin (560) of the busbar frame (500). For example, the fixing portion (726, 746, 766, 782, 784) of the power terminal (700) may be in the shape of a hole into which the fixing pin (560) can be inserted. Accordingly, the power terminal (700) and the busbar frame (500) can be joined by the fixing pin (560) being joined to the hole. Alternatively, the fixing part (726, 746, 766, 782, 784) of the power terminal (700) may be a partially cut hole shape with a diameter smaller than that of the fixing pin (560), into which the fixing pin (560) is inserted to be fitted into the hole shape. Various other methods may be applied regarding the joining relationship between the fixing part (726, 746, 766, 782, 784) and the fixing pin (560), and if the power terminal (700) is joined to the busbar frame (500), various joining structures such as bolting, fusion welding, welding, and hooking may be applied.

[0084] In one embodiment, the fixing pin (560) of the busbar frame (500) can be integrally molded together with the busbar frame (500). The busbar frame (500) can be manufactured through an injection molding process, and the fixing pin (560) can be manufactured together through an injection molding process by constituting a part of the busbar frame (500). However, in addition to the injection molding process, various molding processes such as extrusion, die casting, and molding may be applied.

[0085] In one embodiment, when the connection terminal (300) is not assembled, the power terminal (700) is supported at one point around the fixing pin (560) and vibrates on the busbar frame (500), and when the connection terminal (300) is assembled, it is supported at two points around the coupling part (520) and the fixing pin (560) and may not vibrate. Specifically, the power terminal (700) may be coupled to the busbar frame (500) first, and the power terminal (700) may be coupled to the busbar frame (500) and supported at one point around the fixing pin (560). It may vibrate within a range with a clearance (C) around the fixing pin (560), and through this clearance (C), the connection terminal (300), which has positional tolerance, can be stably coupled to the coupling part (520) of the busbar frame (500). After the connection terminal (300) is connected to the joint portion (520) of the busbar frame (500), the power terminal (700) can be supported at two points by the connection terminal (300) and the fixing pin (560). By supporting the power terminal (700) at two points, vibration caused by play (C) is not generated, and accordingly, the problem of the coil crimping portion (728, 748, 768, 786) being disconnected due to vibration can be prevented.

[0086]

[0087] In one embodiment, as shown in FIG. 5, the busbar frame (500) can be combined with the busbar cover (580, 890). The busbar cover (580, 890) can be combined on both sides of the busbar frame (500), and the power terminal (700) can be positioned between the busbar cover (580, 890) and the busbar frame (500). The busbar cover (580, 890) can maintain electrical stability and provide insulation by closing one or both sides of the busbar frame (500) to which the power terminal (700) is combined. This prevents potential hazards in the electrical system and extends the lifespan of the connection unit (WU).

[0088]

[0089] In one embodiment, as shown in FIGS. 6 to 9, the connecting portion (520) of the busbar frame (500) may have a plurality of connecting holes (522) formed therein to which the connecting terminal (300) is connected. Additionally, the connecting portion (540) of the busbar frame (500) may have a connecting groove (542) formed therein to which the power terminal (700) is seated. Accordingly, the power terminal (700) may be formed such that one end is seated in the connecting hole (522) and the other end extends from the connecting hole (522) along the connecting groove (542). The connecting terminal (300) may be inserted into the connecting hole (522) by passing through the connecting hole (522) and the one end of the power terminal (700) simultaneously after the one end of the power terminal (700) is seated in the connecting hole (522).

[0090] In one embodiment, the coupling holes (522) may be formed in the same number as the number of conductor rods (320) when the connecting terminal (300) is a hermetic terminal. For example, as shown in FIG. 5, when there are 3 conductor rods (320) of the hermetic terminal (300), the coupling holes (522) may also be formed in 3.

[0091] In one embodiment, a protrusion (530) may be provided between the coupling hole (522) and the connection groove (542) of the busbar frame (500). The protrusion (530) may have a shape that protrudes upward from the connection groove (542) toward the coupling hole (522) and is connected to each of the plurality of coupling holes (522). Since the busbar frame (500) can be integrally molded by an injection molding process, the coupling hole (522), the protrusion (530), and the connection groove (542) can be integrally molded.

[0092] In one embodiment, the power terminal (700) may be configured to be seated on the busbar frame (500). Therefore, the power terminal (700) may have a bent portion (724, 744, 764) formed at a point corresponding to the protrusion (530) of the busbar frame (500). That is, just as the protrusion (530) is bent upward from the connection groove (542) toward the coupling hole (522), the shape of the bent portion (724, 744, 764) of the power terminal (700) may also be formed to be bent upward along the protrusion (530) of the power terminal (700). Thus, the bent portion (724, 744, 764) of the power terminal (700) can be covered by the protrusion (530) of the busbar frame (500).

[0093]

[0094]

[0095] *

[0096] * In one embodiment, as shown in FIG. 5, a socket portion (722, 742, 762) may be formed at one end of the power terminal (700). Each power terminal (700) may be responsible for connecting a three-phase power source in a power system such as a motor (140). Accordingly, a socket portion (722, 742, 762) may be provided for the stability of the electrical connection and ease of assembly.

[0097] In one embodiment, as shown in FIGS. 8 and 9, the socket portion (722, 742, 762) may be configured to be coupled to one end of the power terminal (700). Through this, the socket portion (722, 742, 762) can be inserted into the coupling hole (522) of the busbar frame (500), and when the socket portion (722, 742, 762) is inserted into the coupling hole (522) of the busbar frame (500), the connection terminal (300) can be inserted into the socket portion (722, 742, 762) so that the connection terminal (300), the busbar frame (500), and the power terminal (700) can be electrically coupled.

[0098] In one embodiment, the size of the coupling hole (522) of the busbar frame (500) is formed to be larger than the socket portion (722, 742, 762) of the power terminal (700), and the size of the socket portion (722, 742, 762) of the power terminal (700) can be formed to be larger than the conductor rod (320) of the connection terminal (300). Through this size relationship, the conductor rod (320) is inserted into the socket portion (722, 742, 762), and the socket portion (722, 742, 762) is inserted into the coupling hole (522), thereby allowing the connection terminal (300), the power terminal (700), and the busbar frame (500) to be electrically coupled.

[0099]

[0100] In one embodiment, the coupling portion (520) and the connection portion (540) of the busbar frame (500) may be formed on both sides of the busbar frame (500). The power terminal (700) may be coupled to either one side of the busbar frame (500). More specifically, the power terminal (700) may be provided with a plurality of phases (720, 740, 760). Some of the phases (720) among the plurality of phases (720, 740, 760) may be coupled to one side of the busbar frame (500), and the remaining phases (740, 760) may be coupled to the other side of the busbar frame (500).

[0101] In one embodiment, the coupling portion (520) and the connection portion (540) of the busbar frame (500) may be formed on both sides of the busbar frame (500). Accordingly, the coupling hole (522) and the connection groove (542) of the busbar frame (500) are formed on both sides of the busbar frame (500), and the power terminal (700), which is provided with a plurality of upper portions (720, 740, 760), may be coupled to one side or both sides of the busbar frame (500). In particular, the coupling hole (522) of the busbar frame (500) may have a hole formed on one side that is sized to allow the socket portion (722, 742, 762) of the power terminal (700) to be coupled from top to bottom, and on the other side that is sized to allow the socket portion (722, 742, 762) of the power terminal (700) to be coupled from bottom to top.

[0102] In one embodiment, the power terminal (700) may be provided with three phases (720, 740, 760). More specifically, the power terminal (700) may be formed with a U phase (720), a V phase (740), and a W phase terminal (760). One of the three phases (720, 740, 760) may be connected to one side of the busbar frame (500), and the remaining two phases (740, 760) may be connected to the other side.

[0103] In one embodiment, the connection portion (540) of the busbar frame (500) may be provided in a circular shape, and the three phases (720, 740, 760) may be in the shape of a semicircle. Accordingly, they may be connected in a semicircular shape to one side or the other side of the circular busbar frame (500) connection portion (540). For example, as shown in FIGS. 6 and 7, the U-phase terminal (720) may be connected to the connection portion (540) on one side of the busbar frame (500), and the V-phase (740) and W-phase terminals (760) may be connected to the connection portion (540) on the other side of the busbar frame (500). Each U, V, and W phase (720, 740, 760) is coupled to be seated in the connection groove (542) of the connection part (540) of the busbar frame (500), and a semicircular terminal (720, 740, 760) can be seated along the circular connection part (540).

[0104] In one embodiment, a fixing part (726, 746, 766, 782, 784) in a semicircular terminal (720, 740, 760) may be provided at the end of each U, V, and W power terminal (720, 740, 760). Since the power terminal (700) is composed of a conductor through which current flows, if a fixing part (726, 746, 766, 782, 784), such as a hole shape, is provided in the path through which current flows, it may obstruct the flow of current. Therefore, the fixing part (726, 746, 766, 782, 784) may be provided at the end of the power terminal (700) so as not to obstruct the flow of current on the power terminal (700).

[0105] In one embodiment, the coil crimping portion (728, 748, 768, 786) may be formed at a location far from one end and close to the other end of the U, V, W power terminal (700). Accordingly, the power terminal (700) vibrates within the clearance (C) range inside the connection groove (542) with respect to the fixing portion (726, 746, 766, 782, 784), and due to this vibration, vibration is transmitted to the coil crimping portion (728, 748, 768, 786), and a disconnection may occur at the connection point between the coil crimping portion (728, 748, 768, 786) and the power terminal (700) in a manner such as being cut or severed. In order to prevent such disconnection, the power terminal (700) having a gap (C) can be prevented from vibrating further due to the two-point support of the fixed part (726, 746, 766, 782, 784) and the connecting terminal (300) by connecting the connecting terminal (300) to the connecting part (520).

[0106] In one embodiment, the power terminal (700) may further include a neutral terminal (780). The neutral terminal (780) can serve to distribute the voltage evenly as each phase generates voltage at a constant time interval in the three-phase power terminals (720, 740, 760) of U, V, and W. Additionally, the neutral terminal (780) can stabilize the current flow between each phase by absorbing the unbalanced power that may occur in the three-phase power terminal (700).

[0107] In one embodiment, the neutral terminal (780) may be coupled to one side of the busbar frame (500). Specifically, the neutral terminal (780) may be coupled together with the terminal (720) of the three-phase terminals (720, 740, 760) at the part where the terminal (720) is coupled. However, if the terminal (700) is not composed of the three-phase terminals (720, 740, 760), the neutral terminal (780) may be coupled to one side or the other side of the busbar frame (500).

[0108] In one embodiment, unlike the U, V, W three-phase power terminals (720, 740, 760), the neutral terminal (780) may not have one end seated on the coupling part (520). Additionally, the neutral terminal (780) may be configured to be shorter in length than the U, V, W three-phase power terminals (720, 740, 760). Accordingly, the neutral terminal (780) has fixing parts (782, 784) formed at both ends, so that it can be supported at two points from the beginning, unlike the U, V, W three-phase power terminals (720, 740, 760).

[0109]

[0110] In one embodiment, the connection terminal (300) may include a plurality of conductor rods (320), and the conductor rods (320) are coupled to the coupling portion (520) of the busbar frame (500), and one end of the power terminal (700) may be fixed to the busbar frame (500) by the conductor rods (320) being coupled to the coupling portion (520). Specifically, one end of the power terminal (700) may be preferentially seated on the coupling portion (520) of the busbar frame (500). After that, the conductor rods (320) of the connection terminal (300) may be inserted while sequentially passing through one end of the power terminal (700) and the coupling portion (520) of the busbar frame (500).

[0111] In one embodiment, the connection terminal (300) is provided with a body plate (340), and a plurality of conductor rods (320) can be spaced apart from each other by penetrating the body plate (340), and an insulator (360) can be injected between the plurality of conductor rods (320) and the body plate (340) to be joined.

[0112]

[0113] In the present disclosure, before the connection terminal (300) is connected, the power terminal (700) is supported at one point on the busbar frame (500) and vibrates due to the gap (C), and after the connection terminal (300) is connected, the power terminal (700) is supported at two points and can be connected stably. Specifically, the power terminal (700) is supported at one point on the busbar frame (500) through the fixing part (726, 746, 766, 782, 784), so that the connection terminal (300) with positional tolerance can be stably connected to the busbar frame (500), and after the connection terminal (300) is connected, the power terminal (700) is supported at two points by the connection terminal (300) and the fixing part (726, 746, 766, 782, 784) so ​​that it does not vibrate, thereby preventing the coil compression part (728, 748, 768, 786) from being damaged due to vibration.

[0114] The present disclosure is proposed to solve problems that may occur in existing technology regarding the structure and assembly method of the power terminal (700) in an electric compressor (100). In particular, the goal is to provide an improved structure that prevents electrical connection problems caused by vibration and positional errors, and ensures stable power transmission even in high-vibration environments. This has the effect of improving the efficiency of the electric compressor (100) and the performance and safety of the entire compressor (100).

[0115]

[0116] Although specific embodiments of the present disclosure have been illustrated and described, it is obvious to those skilled in the art that the present disclosure may be modified and changed in various ways without departing from the technical spirit of the present disclosure as provided by the following claims.

[0117]

[0118] [Explanation of the symbol]

[0119] 100: Compressor 120: Inverter

[0120] 140 : Motor 300 : Connection terminal

[0121] 320 : Conductor rod 340 : Body plate

[0122] 360 : Insulator 500 : Busbar frame

[0123] 520 : Connecting part 522 : Connecting hole

[0124] 530 : Protrusion 540 : Connection part

[0125] 542 : Connection slot 560 : Fixing pin

[0126] 580 : 1st busbar cover 590 : 2nd busbar cover

[0127] 700 : Jeonwon Terminal 720 : U-sang Terminal

[0128] 722 : Socket part 724 : Bending part

[0129] 726 : Fixed part 728 : Coil crimping part

[0130] 740: V-phase terminal 760: W-phase terminal

[0131] 780 : Jungseong Terminal C : Barracks

[0132] WU : Final Unit

Claims

1. A connection terminal that electrically connects the inverter of a compressor and the motor; A busbar frame positioned between the above-mentioned connection terminal and the above-mentioned motor, having a coupling portion provided to connect the above-mentioned connection terminal, and having a linear connection portion extended from the coupling portion; and A power terminal comprising: one end which is seated on the joint portion and assembled with the connection terminal, and the other end which extends from the one end along the connection portion and is coupled to the busbar frame through a fixing portion formed on the other end; A wiring unit of a compressor, wherein the power terminal is assembled with one end having a gap in the busbar frame and vibrates on the busbar frame around the fixed part, and when the connecting terminal is assembled to the one end of the power terminal, it does not vibrate on the busbar frame.

2. In Claim 1, A wiring unit of a compressor, wherein the above power terminal is provided with a coil crimping part, and the coil crimping part is provided to protrude outwardly at a point between the above one end of the power terminal and the above fixing part.

3. In Claim 2, A wiring unit of a compressor in which the coil crimping part vibrates when the connecting terminal is not assembled while the above-mentioned one end of the above-mentioned power terminal is seated on the above-mentioned coupling part of the above-mentioned busbar frame, and the coil crimping part does not vibrate when the above-mentioned connecting terminal is assembled.

4. In Claim 3, A compressor connection unit in which a plurality of coil compression sections are provided, and the plurality of coil compression sections are spaced apart from each other along the direction in which the connection section extends from the outside of the power terminal.

5. In Claim 1, The above power terminal is a wiring unit of a compressor in which the above fixed part is supported at one point on the busbar frame, so that one end vibrates on the coupling part and the other end vibrates on the connection part.

6. In Claim 5, The above power terminal is a wiring unit of a compressor that vibrates in a direction perpendicular to the direction in which the above connection terminal is assembled.

7. In Claim 5, A connection unit of a compressor that does not vibrate, wherein the above connection terminal is connected to the coupling part while one end of the above power terminal is seated on the above busbar frame, and when the above connection terminal is connected, the above end or the other end of the above power terminal is supported at two points by the above connection terminal and the above fixing part.

8. In Claim 1, A fixing pin is provided on the busbar frame, and the fixing part of the power terminal is coupled with the fixing pin to form a connection unit of a compressor coupled with the busbar frame.

9. In Claim 8, A wiring unit of a compressor in which the above power terminal is supported at one point centered on the fixing pin and vibrates on the busbar frame when the above connection terminal is not assembled at one end, and is supported at two points centered on the coupling part and the fixing pin and does not vibrate when the above connection terminal is assembled.

10. In Claim 1, The coupling portion of the busbar frame is provided with a plurality of coupling holes to which the connection terminal is coupled, and the connection portion is formed with a connection groove to which the power terminal is seated, and the power terminal is a connection unit of a compressor in which one end is seated in the coupling hole and the other end extends from the one end along the connection groove.

11. In Claim 10, A wiring unit of a compressor having a protrusion provided between the coupling hole and the connection groove of the busbar frame, wherein the protrusion protrudes upward from the connection groove and is connected to a plurality of coupling holes.

12. In Claim 11, A wiring unit of a compressor in which the power terminal has a bend formed at a point corresponding to the protrusion of the busbar frame, and the bend is formed in a shape bent upward to correspond to the shape of the protrusion of the power terminal.

13. In Claim 10, A wiring unit of a compressor in which a socket portion is formed at one end of the power terminal, the socket portion is inserted into the coupling hole of the busbar frame, and the connecting terminal is inserted into the socket portion and assembled.

14. In Claim 1, The coupling portion and the connection portion of the busbar frame are formed on both sides of the busbar frame, and the power terminal is connected to one of the two sides of the busbar frame.

15. In Claim 14, A wiring unit of a compressor in which the above power terminal is provided with a plurality of phases, some of the plurality of phases are connected to one side of the busbar frame, and the remaining phases are connected to the other side of the busbar frame.

16. In Claim 14, A wiring unit of a compressor in which the above power terminal is provided in three phases, one of the three phases of the above power terminal is connected to one side of the busbar frame, and the remaining two phases are connected to the other side.

17. In Claim 16, A connection unit of a compressor in which the connection portion of the busbar frame is provided in a circular shape, and the three phases are formed in a semicircular shape and connected in a semicircular shape to one side or the other end of the busbar frame.

18. In Claim 16, The above power terminal further includes a neutral terminal, the neutral terminal is coupled to one side of the busbar frame, and both ends of the neutral terminal are provided with fixing parts, thereby forming a two-point connection unit of a compressor that is supported on one side of the busbar frame through the fixing parts.

19. In Claim 1, A connection unit of a compressor in which the above-mentioned connection terminal includes a plurality of conductor rods, the conductor rods are connected to the joint portion of the busbar frame, and the power terminal is fixed to the busbar frame by the conductor rods being connected to the joint portion while one end of the power terminal is seated on the joint portion of the busbar frame.

20. In Claim 19, A connection unit of a compressor in which the above-mentioned connection terminal is provided with a body plate, a plurality of the above-mentioned conductor rods are spaced apart from each other and penetrate the body plate, and an insulator is injected between the plurality of the above-mentioned conductor rods and the body plate to be joined.

Images