Systems and methods for transient suppression

Abstract

Transient signal suppression is provided. A system includes a choke. The choke includes an inner surface defining a cavity, the inner surface configured to surround a plurality of conductive elements. The choke includes an outer surface configured to couple with a housing for a plurality of electrically conductive elements.

Description

Background Art

[0001] Electric vehicles may include electric propulsion systems. Such systems may transmit electrical signals along various paths and may condition the electrical signals. Summary of the invention

[0002] The present technical scheme generally relates to systems, methods and devices for transient suppression. A choke may include a nanocrystalline iron-based alloy or other nanocrystalline material to form a nanocrystalline magnetic core. Such a choke may be disposed in a housing configured to receive a conductive element (e.g., a busbar) to suppress transient phenomena coupled (wired or wirelessly) into the conductive element. The choke may be directly or indirectly interfaced (e.g., connected) with the housing via an intermediate material (such as a non-conductive potting material) to mechanically stabilize the choke. The housing may include a cavity to receive the choke or potting, such as a "raceway" shaped cavity defined by opposing side walls. A sealing element (e.g., an O-ring or gasket) may prevent the entry or egress of potting material, lubricant, coolant or other material between the cavity and the conductive element or other housing parts.

[0003] At least one aspect relates to a system. The system may include a choke. The choke may include an inner surface defining a cavity. The inner surface may surround a plurality of conductive elements. The choke may include an outer surface. The outer surface may be coupled to a housing for the plurality of conductive elements.

[0004] At least one aspect relates to an apparatus. The apparatus may be or include a housing. A first side wall of the housing may include an outer surface thereof. A second side wall of the housing may include an inner surface thereof. The inner surface of the second side wall may face the outer surface of the first side wall to define a cavity. The cavity may be configured to receive a choke. The choke received in the cavity may surround a plurality of conductive elements defined by the first side wall.

[0005] At least one aspect relates to a system. The system may include a housing. The housing may include a first sidewall, the first sidewall including an outer surface thereof. The housing may include a second sidewall, the second sidewall including an inner surface thereof, the inner surface of the second sidewall facing the outer surface of the first sidewall to define a cavity. The system may include a choke. The choke may include an inner surface, the inner surface configured to surround a plurality of conductive elements. The choke may include an outer surface, the outer surface configured to couple with the housing.

[0006] These and other aspects and implementations are discussed in detail below. The foregoing information and the following detailed description include illustrative examples of various aspects and implementations, and provide an overview or framework for understanding the nature and characteristics of the protected aspects and implementations. The accompanying drawings provide illustration and further understanding of various aspects and implementations, and are incorporated into and constitute a part of this specification. The foregoing information and the following detailed description and the accompanying drawings include illustrative examples and should not be considered limiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings are not intended to be drawn to scale. Like reference numbers and names indicate similar elements in the various drawings. For clarity, not every component may be labeled in every drawing. In the drawings:

[0008] Figure 1 Depicted is an example exploded view of a transient suppression system.

[0009] Figure 2 Another example exploded view of a transient suppression system is depicted.

[0010] Figure 3 An example electric vehicle is depicted.

[0011] Figure 4 Depicted is an example cross-sectional view of an inverter-motor assembly.

[0012] Figure 5 Depicted is an example cross-sectional view of an inverter-motor assembly.

[0013] Figure 6 Depicted Figure 1 Example top view of a transient suppression system.

[0014] Figure 7 Depicted Figure 1 Example longitudinal cross-section of a transient suppression system.

[0015] Figure 8 Depicted Figure 1 Example cross-sectional view of a transient suppression system.

[0016] Fig. 9 A flow chart of an example method of making a transient suppression system is depicted. DETAILED DESCRIPTION

[0017] Various concepts related to methods, apparatus and systems for transient suppression devices and specific implementations thereof are described in more detail below.The various concepts introduced above and discussed in more detail below can be implemented in any of a variety of ways.

[0018] The present disclosure generally relates to a choke integrated into a housing that includes busbars for each phase (e.g., three phases) of an AC motor, such as an interconnect between an AC motor and an inverter. The choke can be received in a "raceway" of the housing between an inner sidewall and an outer sidewall and interfaced with a potting material to mechanically secure (e.g., common mode) the choke with the busbars. The choke can laterally surround the busbars. The housing can interface with end caps so that the housing can enclose the choke. The choke can filter transients or ripples caused by inverter switching, environmental conditions, or vehicle operation.

[0019] Such filtering can reduce resistive losses and arcing that can affect efficiency or wear of equipment (e.g., vehicle) components. Thus, chokes (such as common mode chokes) can reduce transient currents, which can prevent arcing or other transient current levels that can cause, for example, bore bearing pitting or heating of oil in sealed unit motors. The chokes of the present disclosure can be integrated into various spaces that may not accommodate other chokes and further benefit from mechanical or ingress protection of the busbar housing. Such mechanical ingress or protection can reduce exposure to chemical or mechanical stress sources from various lubricants, coolants, or environmental conditions present or interfacing with equipment including electric vehicles.

[0020] Figure 1 An example exploded view of transient suppression system 100 is depicted. The exploded view of system 100 is depicted along axis 099 extending in a "Z" direction, which may be referred to as a "top" or "upper" surface, side, or direction. References to "top," "upper," etc. may refer to Figure 1 099 is provided for clarity of reference to the various transient suppression systems 100 depicted herein, and is not intended to limit the orientation of the transient suppression system 100 (e.g., during the manufacturing process, or when installed in an electric vehicle). The "X" direction, which is perpendicular to the "Z" direction, may be referred to as the "longitudinal" or "lengthwise" direction. The "Y" direction, which is perpendicular to the "Z" direction and the "X" direction, may be referred to as the "lateral" or "widthwise" direction. Planes extending in the "X" and "Y" directions may be referred to as lateral planes. Axis 099 is provided for clarity of reference to the various transient suppression systems 100 depicted herein, and is not intended to have a limiting effect on the present disclosure.

[0021] The transient suppression system 100 may include a choke 102 that includes a magnetic material. The choke 102 may form a ring (e.g., an annular shape along a lateral surface). Such a choke 102 may include the depicted elliptical curve shape, or other shapes, such as a ring, a u-shape, a drum shape, an e-shape, or a square or rectangular shape. The choke 102 may be closed along one or more lateral surfaces. The inner surface 104 of the choke 102 may define a cavity in one or more lateral surfaces. The cavity may be configured to receive any number of conductive elements 108 (e.g., cables or busbars), so that the system 100 may include or interface with the conductive elements of any number. That is, the choke 102 may laterally enclose the conductive elements 108. For example, the cavity may receive three alternating current (AC) busbars corresponding to three phases of an AC motor for an electric vehicle. That is, the conductive elements 108 laterally enclosed by the choke 102 may electrically connect a multi-phase (e.g., three-phase) motor to an inverter.

[0022] The choke 102 may include magnetic materials. For example, the choke may include one or more nanocrystalline materials forming a nanocrystalline magnetic core. The nanocrystalline material may be formed along a metallized strip. The nanocrystalline material may include various iron-based (e.g., iron-containing) alloys, which may include, but are not limited to, metallic glasses, such as iron-boron alloys, iron-silicon alloys, or iron-phosphorus alloys. Some iron-based alloys may include cobalt or nickel, such as permalloy or mu-metal. Other metals or other materials (such as zinc or zinc-iron alloys) may provide barriers to various environments or vehicle materials (such as potting materials or environmental pollutants).

[0023] The transient suppression system 100 may include a housing 110. The housing 110 may include a first inner sidewall 112 and a second outer sidewall 114 that define a cavity to receive the choke 102. Where useful for clarity, the cavity may be referred to as a "raceway" cavity to distinguish it from any other cavity of the housing 110. Such references are not intended to be limiting; the cavity may include a variety of geometries. For example, another cavity may refer to a portion of a raceway that is laterally enclosed by the choke along at least one lateral face. That is, the raceway cavity may include a first portion defined by the choke 102 and the inner sidewall 112 and a second portion defined by the outer sidewall 114 and the choke.

[0024] The cavity may receive a potting material (not depicted) or other material to mechanically support the choke 102. The housing 110 may include an opening to receive one or more conductive elements 108. For example, the conductive element 108 may be received substantially perpendicular to the lateral surface through the choke 102. As shown, the inner sidewall 112 may define a cavity from a portion of the housing 110 configured to receive the conductive element 108, which may include mechanical support therefor. The cavity (e.g., a raceway) may extend perpendicular to the lateral surface (e.g., along the "Z" axis) a distance less than the z dimension of the choke 102 so that the choke 102 can be received in the cavity. The inner surface of the choke 102 may surround the inner sidewall 112 of the housing along with any conductive elements or seals (e.g., O-rings 118) along the lateral surface. The lateral surface of the choke 102 surrounding the conductive element 108 may be referred to as a defining surface of the conductive element.

[0025] The housing 110 may include or be configured to interface with a cap 116 to define or define an upper portion of the cavity. The cap 116 may close the cavity to prevent potting material from flowing out of the cavity or to prevent lubricants, coolants, or environmental contaminants from entering the cavity. For example, when installed in a vehicle, the conductive element 108 may extend (upward, as shown) beyond the cap 116 to extend into another housing (such as a motor housing) (e.g., Figure 4 ). Another housing may include a coolant, such as an oil-based coolant. The housing 110 may also be configured to interface with a sealing element, such as an O-ring 118, as depicted, which may be configured to interface (e.g., seal) with material from the other housing, such as an oil-based coolant from a cavity or other portion of the housing 110. For example, the O-ring 118 may seal motor coolant, oil, or other material from the motor housing to prevent it from entering the cavity or otherwise interfacing with the choke 102. The O-ring 118 may be comprised of or include a fluoroelastomer, such as a fluororubber material (FKM). Such a material may be configured to interface with an oil that the O-ring 118 may contact, such as oil in the surrounding environment (e.g., electric motor oil) or a lubricant for the O-ring 118. Such a lubricant may include a dry lubricant, such as McLube 419.

[0026] The housing 110 may be formed (e.g., injection molded, thermoformed, or compression molded) of a material configured to interface with a potting material, which may include a metal or a thermoplastic such as polyamide-imide, polyphenylene sulfide (PPS), polyetheretherketone, or polyimide (e.g., glass fiber reinforced PPS, such as PPS 40). Such materials may be selected based on the following properties: temperature, chemical, or flame retardancy; electrical insulation; or moisture absorption repellency. The housing 110 may be formed of one or more structures, such as an insert that interfaces with the inner surface of the inner sidewall 112 of the housing to receive a conductive element or O-ring 118.

[0027] The outer surface 106 of the choke 102 may interface with the outer sidewall 114 of the housing 110. That is, the outer surface 106 of the choke 102 may directly or indirectly face and abut the outer sidewall 114. Some portions of the choke 102 may directly abut the outer sidewall, while other portions may be mediated by potting material (e.g., depending on the choke deformation or configuration). The inner surface of the inner sidewall 112 of the housing 110 may surround various conductive elements 108 or sealing elements, or may prevent potting material from flowing out of the raceway cavity to interfere with the conductive elements 108.

[0028] The choke 102 may interface with the potting material, such as directly interface with it. A film (such as a zinc-containing film) or other metallization layer or coating of the choke 102 may directly contact the potting material. The potting material may be insulating, provide mechanical support, or reduce environmental stresses to which the choke 102 is subjected, such as moisture, dust, heat, shock, or vibration associated with electric vehicles. The potting material may be or include an epoxy resin, a silicone resin, or a polyurethane resin. For example, an epoxy resin may be selected for mechanical strength or chemical resistance; a silicone resin (e.g., TSE3854DSW) may be selected for thermal stability or flexibility; or a polyurethane resin may be selected for flexibility or electrical properties (e.g., dielectric properties). Such illustrative examples are not intended to be limiting, and the present disclosure contemplates a variety of additional potting materials, combinations thereof, or the like.

[0029] Figure 2 An example exploded view of a transient suppression system 100 is depicted. For example, the depicted transient suppression system 100 may be Figure 1 1. An inverted view of a transient suppression system 100 or variations thereof. The housing 110 may include a mounting point 202, such as an integral or attached mounting point 202. The mounting point 202 may be configured to receive a fastener, such as a screw, a rivet, a pin, or a clip. The cap 116 may cover or retain the choke 102 in the raceway cavity of the housing 110 such that connection of the mounting point 202 to another surface (e.g., a motor housing) may compress or secure the exploded stack depicted.

[0030] As shown, the conductive element 108 may terminate at a circlip nut 208 or other terminal connector, which may be configured to couple the conductive element 108 to a corresponding electrical connector, such as a busbar or cable of an electric motor. The opposite end 206 of the conductive element 108 may extend from the housing 110 to be electrically connected to another electrical connector (such as to an inverter) via a terminal lug or other terminal connector. When assembled, the transient suppression system 100 may thus include a sealed housing, such as a hermetic seal, a dust seal, a fluid seal, or otherwise configured to prevent the ingress of various contaminants. The seal may extend from the housing 110 along one or more protrusions of the conductive element 108. For example, the seal may extend along the end of the conductive element 108 depicted with the connected circlip nut 208, or along the opposite end 206 of the conductive element 108. The conductive element 108 may extend from the housing 110 along different faces. For example, the end of the conductive element 108 depicted with the connected circlip nut 208 may extend perpendicular to the lateral face. The opposite ends 206 of the conductive element 108 may extend along the lateral surface.

[0031] Figure 3 An example cross-sectional view of an electric vehicle 305 with at least one battery pack 310 installed is depicted. The electric vehicle 305 may include an electric truck, an electric sport utility vehicle (SUV), an electric van, an electric car, an electric car, an electric motorcycle, an electric scooter, an electric passenger car, an electric passenger or commercial truck, a hybrid vehicle, or other vehicles, such as marine or air vehicles, airplanes, helicopters, submarines, ships, or drones. The battery pack 310 may also be used as an energy storage system to power a building, such as a residential or commercial building. The electric vehicle 305 may be fully electric or partially electric (e.g., a plug-in hybrid), and further, the electric vehicle 305 may be fully autonomous, partially autonomous, or unmanned. The electric vehicle 305 may also be manually operated or non-autonomous. The electric vehicle 305, such as an electric truck or car, may include an onboard battery pack 310, a battery or battery module 315, or a battery cell 320 to power the electric vehicle. The electric vehicle 305 may include a chassis 325 (e.g., a frame, internal frame, or support structure). The chassis 325 may support various components of the electric vehicle 305. The chassis 325 may span a front portion 330 (e.g., a hood or lid portion), a body portion 335, and a rear portion 340 (e.g., a luggage compartment, cargo, or trunk portion) of the electric vehicle 305. The battery pack 310 may be mounted or placed within the electric vehicle 305. For example, the battery pack 310 may be mounted within one or more of the front portion 330, the body portion 335, or the rear portion 340 on the chassis 325 of the electric vehicle 305.

[0032] The battery pack 310 may include or be connected to at least one bus bar, such as a current collector element. For example, the first bus bar 345 and the second bus bar 350 may include conductive materials to connect or otherwise electrically couple the battery, battery module 315, or battery cell 320 to other electrical components of the electric vehicle 305 to power various systems or components of the electric vehicle 305. For example, the battery pack 310 may be connected to various inverters and electric motors (e.g., via an inverter).

[0033] Each of the front wheel set 355 and the rear wheel set 360 may interface with an inverter-motor pair. For example, the front wheel set may interface with a single inverter-motor pair connected to the front wheels via a differential, or may include a separate motor-inverter pair for each driven wheel. Thus, the front wheel set 355 may interface with at least one front motor 365 coupled to a front inverter 375 via the front transient suppression system 100. The rear wheel set 360 may interface with at least one rear motor 370 coupled to a rear inverter 380 via the rear transient suppression system 100. In some vehicles, the front inverter-motor pair and the rear inverter-motor pair may be the same inverter-motor pair connected via a differential, or the front inverter-motor pair or the rear inverter-motor pair may be omitted (e.g., in a front-wheel or rear-wheel drive vehicle).

[0034] Reference now Figure 4 , an example cross-sectional view 400 of an inverter-motor assembly is provided. The cross-sectional view 400 includes an inverter housing 402 adjacent to a motor housing 404. The inverter housing 402 may be coupled to the motor housing 404 via bolts or other fasteners. The coupling between the inverter housing 402 and the motor housing 404 may form a seal therebetween.

[0035] The housing 110 for the transient suppression system 100 is shown as being disposed within the inverter housing 402, wherein one end of the various conductive elements 108 may extend into the motor housing 404. Various fasteners 406 may pass through the housing 110 for the transient suppression system 100 and may be received by the inverter housing 402 (e.g., threads thereof). The fasteners 406 may apply pressure to the housing 110, which may form a seal due to the clamping force between the housing 110 for the transient suppression system 100 and the inverter housing 402. For example, as shown, the fasteners 406 may center the conductive elements 108 between each other. In some cases, the fasteners 406 centering the conductive elements 108 may be omitted. The conductive elements 108 may be spaced equidistant from each other. For example, three conductive elements 108 may be disposed substantially equally to each other in a triangular geometry, or substantially equally to adjacent conductive elements 108 in a linear (e.g., straight) geometry.

[0036] Reference now Figure 5 , an example cross-sectional view 500 of an inverter-motor assembly is provided. The cut line of the cross-sectional view 500 extends through each of the housing 110, the choke 102, the conductive element 108, the inverter housing 402, the motor housing 404, and the O-ring 118 for the transient suppression system 100.

[0037] The conductive element 108 may extend into an inverter assembly disposed within the inverter housing 402 to electrically connect to one or more phases of the multi-phase inverter assembly. The end of the conductive element 108 including the circlip nut 208 may extend into the motor assembly, which may be sealed to the raceway cavity by a seal, such as an O-ring 118. Another seal, such as a lip seal 502, may connect corresponding surfaces of the inverter housing 402 and the motor housing 404.

[0038] Reference now Figure 6 , provides an example top view of a transient suppression system 100. For example, the transient suppression system 100 depicted may be Figure 1 099. The housing 110 of the transient suppression system 100 may include extensions along the lateral surfaces of the depicted XY axis 099. The extensions may encapsulate the conductive element 108 from one or more directions or faces. One or more mounting points 202 may be integral or coupled to any housing extension or another portion of the housing 110. One or more mounting points 202 may be laterally disposed within the inner sidewall 112 of the housing 110. Various mounting points 202 may include spring elements, washers or other seals, or other elements configured to connect the housing 110 of the transient suppression system 100 to another portion of the system, such as the electric vehicle 305, or to interface with such elements.

[0039] Reference now Figure 7 , provides an example longitudinal cross-sectional view of a transient suppression system 100. For example, the transient suppression system 100 depicted may be Figure 1 100 or a variation thereof. As shown, an O-ring 118 may separate the main body of the housing 110 from another portion of the system 100. The O-ring 118 may be vertically spaced from the cavity along the Z-axis 099. The other portion may include a conductive element 108 (e.g., a portion of the conductive element 108 previously described as including a circlip nut 208) extending in the negative Z-direction toward the motor housing 404. A spring element 702 may extend along each mounting point 202 to retain a fastener 406 therein.

[0040] Reference now Figure 8 , provides an example cross-sectional view of a transient suppression system 100. For example, the transient suppression system 100 depicted may be Figure 1A side view of a transient suppression system 100 or a variation thereof. Figure 8 Depicted in FIG. 7 are spring element 702 and O-ring 118 coupled to housing 110 that receives conductive element 108. Circlip nut 208 is shown coupled to conductive element 108 that can couple individual phases of a multi-phase inverter assembly to individual phases of a multi-phase electric motor.

[0041] Reference now Fig. 9 , a flow chart of an example method 900 of manufacturing a transient suppression system 100 is provided. The operations of the method 900 may manufacture (e.g., assemble, manufacture, or otherwise form) Figures 1 to 8 , or variations thereof. At action 902, the housing 110 receives the choke 102 into a cavity configured to receive the choke 102. For example, the cavity may be defined by an inner sidewall 112 and an outer sidewall 114 of the housing 110. The choke 102 may include an inner surface that interfaces with the inner sidewall 112. For example, the choke 102 may be mechanically coupled to the inner sidewall 112 via a material injected, cast, or otherwise introduced into the cavity to mechanically support or retain the choke 102. The cap 116 may cover the top surface of the cavity to seal the housing 110. The cap 116 may retain the potting material in the cavity. The choke 102 may enclose a conductive element 108 disposed within the inner sidewall 112 of the housing 110 such that the inner sidewall 112 defines the choke 102 or a potting material from the conductive element 108.

[0042] At action 904, a first terminal end of the conductive element 108 is connected to the multi-phase inverter. For example, the conductive element 108 may extend from the housing 110 to a terminal connector (such as a terminal lug that may be connected to the inverter). For example, the terminal lug of each conductive element may be electrically connected to the inverter to receive a phase of a multi-phase electrical signal (e.g., a three-phase signal). The housing 402 of the inverter may include, enclose, interface with, or otherwise couple to the housing 110 for the transient suppression system 100.

[0043] At action 906, a second terminal of the conductive element 108 is connected to the multi-phase electric motor. For example, the connection can be an electrical connection so that energy can flow from the inverter to the motor to propel the electric vehicle 305 or from the motor to the inverter (e.g., to recapture energy from regenerative braking). The connection can include transferring the conductive element into a housing 404 for a motor assembly. The interface between the housing 404 for the motor assembly and the conductive element 108 can include one or more sealing elements (such as the O-ring 118 depicted herein). The body of the housing 110 for the transient suppression system 100 can abut another sealing element (e.g., a lip seal 502) so that a compressive force (e.g., a clamping force) applied between the respective housings 110, 404 can maintain a seal therebetween. The compressive force can be applied by one or more fasteners 406 passing through various mounting points 202 of the transient suppression system housing 110.

[0044] Although operations are depicted in a particular order in the drawings, these operations need not be performed in the particular order shown or in sequential order, and not all of the operations shown need be performed. The actions described herein may be performed in a different order.

[0045] Now that some exemplary implementations have been described, it is apparent that the foregoing is illustrative rather than restrictive and has been presented by way of example. Specifically, although many of the examples presented herein relate to specific combinations of method actions or system elements, these actions and these elements may be combined in other ways to achieve the same purpose. The actions, elements, and features discussed in conjunction with one implementation are not intended to be excluded from similar roles in other implementations.

[0046] The words and terms used herein are for descriptive purposes and should not be construed as limiting. The use of "including," "comprising," "having," "containing," "involving," "characterized by," and variations thereof herein is intended to encompass the items listed thereafter, their equivalents and additional items, and alternative implementations consisting solely of the items listed thereafter. In one implementation, the systems and methods described herein consist of one, each combination of more than one, or all of the elements, acts, or components described.

[0047] Any specific implementation or element or action of the system and method mentioned in the singular form herein may also include a specific implementation comprising a plurality of these elements, and any plural form of any specific implementation or element or action herein may also include a specific implementation comprising only a single element. Reference in the singular or plural form is not intended to limit the currently disclosed system or method, its parts, actions or elements to a single or multiple configurations. Reference to any action or element based on any information, action or element may include a specific implementation in which the action or element is based at least in part on any information, action or element.

[0048] Any implementation disclosed herein may be combined with any other implementation or embodiment, and references to "an implementation," "some implementations," "an implementation," etc. are not necessarily mutually exclusive, but are intended to indicate that a particular feature, structure, or characteristic described in conjunction with an implementation may be included in at least one implementation or embodiment. Such terms as used herein do not necessarily all refer to the same implementation. Any implementation may be combined, inclusively or exclusively, with any other implementation in any manner consistent with the aspects and implementations disclosed herein.

[0049] References to "or" may be interpreted as inclusive, such that any term described using "or" may indicate any of a single, more than one, and all of the terms. References to at least one of a conjunctive list of terms may be interpreted as inclusive OR to indicate any of a single, more than one, and all of the terms. For example, references to "at least one of 'A' and 'B'" may include only "A," only "B," and both "A" and "B." Such references used in conjunction with "including" or other open-ended terms may include additional items.

[0050] Where a technical feature in the drawings, detailed description or any claims is followed by a reference numeral, the reference numeral is included to enhance the intelligibility of the drawings, detailed description and claims. Therefore, the presence or absence of a reference numeral has no limiting effect on the scope of any claim element.

[0051] Without departing substantially from the teachings and advantages of the subject matter disclosed herein, modifications may be made to the elements and actions, such as changes in size, dimensions, structure, shape and proportion, parameter values, mounting arrangements, use of materials, color, orientation of the various elements. For example, an element shown as being integrally formed may be composed of multiple parts or elements, the position of elements may be reversed or otherwise changed, and the nature or number or position of discrete elements may be changed or varied. Other substitutions, modifications, changes and omissions may also be made in the design, operating conditions and arrangement of the disclosed elements and operations without departing from the scope of the present disclosure.

[0052] Further relative parallel, perpendicular, vertical or other positioning or orientation descriptions include variations within + / -10% or + / -10 degrees of pure vertical, parallel or perpendicular positioning. Unless otherwise expressly stated, references to "about," "substantially," or other degree terms include variations of + / -10% from a given measurement, unit, or range. The coupled elements may be electrically, mechanically, or physically coupled to each other directly or through intervening elements. Accordingly, the scope of the systems and methods described herein is indicated by the appended claims rather than the foregoing description, and variations that come within the meaning and range of equivalents of the claims are included therein.

Claims

1. A system, comprising: A choke, the choke comprising: an inner surface defining a cavity, the inner surface being configured to surround a plurality of conductive elements; and An outer surface is configured to couple with a housing for the plurality of conductive elements. 2 . The system of claim 1 , wherein the system includes the plurality of conductive elements to electrically connect a multi-phase motor to an inverter. 3 . The system of claim 1 , wherein the choke comprises an outer surface of the choke to couple with the first sidewall of the housing.

4. The system of claim 1, wherein the choke comprises a magnetic material comprising a nanocrystalline material.

5. The system of claim 1, wherein the choke comprises the inner surface surrounding a second sidewall of the housing and a plurality of seals, the second sidewall and the plurality of seals being configured to separate the plurality of conductive elements from a potting material.

6. The system of claim 1, wherein the choke comprises: a magnetic material extending a first distance in a first direction perpendicular to a lateral surface, wherein the lateral surface is a bounding surface of the plurality of conductive elements surrounded by the inner surface of the choke; and The housing extends a second distance greater than the first distance to a portion of the housing configured to interface with a cap configured to retain a potting material within the housing.

7. The system of claim 1, wherein the choke is configured to be coupled to the housing via a potting material.

8. The system of claim 1, wherein the choke comprises: a magnetic material extending in a first direction perpendicular to the lateral surface; and The lateral surface is a bounding surface of the plurality of conductive elements surrounded by the inner surface of the choke.

9. A housing, comprising: a first sidewall, the first sidewall comprising an outer surface thereof; A second side wall includes an inner surface thereof, the inner surface of the second side wall facing the outer surface of the first side wall to define a cavity configured to receive a choke surrounding a plurality of conductive elements defined by the first side wall.

10. The housing of claim 9, wherein the plurality of conductive elements are used to electrically connect the multi-phase motor to the multi-phase inverter.

11. The housing of claim 9, wherein the choke comprises a magnetic material comprising a nanocrystalline material.

12. The housing of claim 9, wherein the first sidewall laterally surrounds a plurality of seals vertically spaced apart from the cavity, the second sidewall and the plurality of seals being configured to separate the plurality of conductive elements from a potting material.

13. The housing of claim 9, wherein the choke extends a first distance in a first direction perpendicular to a lateral surface, wherein the lateral surface is a bounding surface of the plurality of conductive elements surrounded by the inner surface of the choke; the cavity extends a second distance greater than the first distance to a portion of the housing configured to interface with a cap, the cap configured to retain a potting material within the housing; and The housing extends a third distance to the sealing element that is greater than the second distance.

14. The housing of claim 9, wherein the housing is configured to be coupled with the choke via a potting material.

15. A system, comprising: A housing, the housing comprising: a first sidewall, the first sidewall comprising an outer surface thereof; a second sidewall, the second sidewall including an inner surface thereof, the inner surface of the second sidewall facing the outer surface of the first sidewall to define a cavity; and A choke, the choke comprising: an inner surface configured to surround a plurality of conductive elements; and An outer surface is configured to be coupled to the housing.

16. The system according to claim 15, further comprising: a multi-phase motor electrically connected to the first ends of the plurality of conductive elements; and A multi-phase inverter is electrically connected to second ends of the plurality of conductive elements opposite to the first ends.

17. The system of claim 15, wherein the outer surface of the choke is coupled to the first sidewall of the housing.

18. The system of claim 15, wherein the choke comprises a magnetic material comprising a nanocrystalline material.

19. The system of claim 15, wherein the choke comprises: a magnetic material extending a first distance in a first direction perpendicular to a lateral surface, wherein the lateral surface is a bounding surface of the plurality of conductive elements surrounded by the inner surface of the choke; and The housing extends a second distance greater than the first distance to a portion of the housing configured to interface with a cap configured to retain a potting material within the housing.

20. The system of claim 15, wherein the cavity comprises a potting material.

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