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DE-102024132591-A1 - Method for manufacturing a component

DE102024132591A1DE 102024132591 A1DE102024132591 A1DE 102024132591A1DE-102024132591-A1

Abstract

Method for manufacturing a component (2), in particular a component (2) for an electric machine, wherein a liquid, in particular a resin material, is introduced from an insertion side (7) of the component (2) into at least one channel (3) of the component (2), in particular a groove in a laminated core of the component (2), wherein a gas flow (12) is generated at a suction opening (10) of the channel (3), which is arranged on a suction side (9) of the at least one channel (3) opposite the insertion side (7), and the introduction of the liquid is at least supported by the gas flow (12).

Inventors

  • Oleg Kornev

Assignees

  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20241108

Claims (10)

  1. Method for manufacturing a component (2), in particular a component (2) for an electric machine, wherein a liquid, in particular a resin material, is introduced from an insertion side (7) of the component (2) into at least one channel (3) of the component (2), in particular a groove in a laminated core of the component (2), characterized in that a gas flow (12) is generated at a suction opening (10) of the channel (3), which is arranged on a suction side (9) of the at least one channel (3) opposite the insertion side (7), and the introduction of the liquid is at least supported by the gas flow (12).
  2. Procedure according to Claim 1 , characterized in that a vacuum is generated on the suction side (9) by means of the gas flow (12) and the liquid is drawn from the injection side (7) to the suction side (9).
  3. Procedure according to Claim 1 or 2 , characterized in that the liquid is poured, in particular dripped, into the channel (3) from the insertion side (7).
  4. Procedure according to Claim 1 or 2 , characterized in that the component (2) is positioned with the insertion side (7) above or on a surface of the liquid and the liquid is drawn into an insertion opening (8) of the channel (3) arranged on the insertion side (7) in the direction of the suction side (9).
  5. Method according to one of the preceding claims, characterized in that at least one section of the component (2) is sealed, in particular a core area arranged radially adjacent to the at least one channel (3) and/or at least one suction opening (10) of at least one further channel (3) and/or at least one insertion opening (8) of at least one further channel (3) and/or at least one outer surface (18) of the component (2) towards the environment.
  6. Method according to one of the preceding claims, characterized in that at least one sealing element (14, 15, 17) is changed in its position between two process steps, in particular between the introduction of liquid into two different channels (3).
  7. Method according to one of the preceding claims, characterized in that the channel (3) of the component (2) is arranged at a defined angle, in particular perpendicular, to the gas flow (12) and/or parallel to a direction of gravity.
  8. Method according to one of the preceding claims, characterized in that the component (2) is designed as a stator lamination stack, wherein resin material is introduced into at least one stator groove accommodating at least one insulating element, in particular insulating paper, and/or at least one conductor element.
  9. Component (2), in particular a component (2) for an electrical machine, characterized in that the component (2) is manufactured by a method according to one of the preceding claims.
  10. Device (1) for manufacturing a component (2), in particular a component (2) for an electric machine, wherein the device is configured to introduce a liquid, in particular a resin material, from an insertion side (7) of the component (2) into at least one channel (3) of the component (2), in particular a groove in a sheet metal stack of the component (2), characterized in that the device (1) is configured to generate a gas flow (12) transverse to the suction opening (10) at a suction opening (10) of the channel (3), which is arranged on a suction side (9) of the at least one channel (3) opposite the insertion side (7), and to at least support the introduction of the liquid by the gas flow (12).

Description

The invention relates to a method for manufacturing a component, in particular a component for an electric machine, wherein a liquid, in particular a resin material, is introduced from an insertion side of the component into at least one channel of the component, in particular a groove in a sheet metal stack of the component. Methods for manufacturing components, specifically components for electrical machines, such as stators or laminated cores for electrical machines, in which a liquid, for example a resin material, is introduced into a channel of the component, are generally known from the prior art. Specifically in the manufacture of electrical machines, it is known to form a laminated core that has channels or slots for receiving conductor elements. To connect the conductor elements to the laminated core in a defined manner, so that they are mechanically bonded to the laminated core and thermally coupled to it for heat dissipation, the slots in which the conductor elements are inserted are filled with a resin material. The liquid or resin material is typically introduced by dripping it into one of the entry points of each channel. The laminated core or component is usually tilted and rotated so that different channels or channel sections—that is, individual slots or multiple slots simultaneously—are filled with the liquid in succession. The liquid then flows through the slots from the entry point to the opposite side of the channel. Because the liquid can flow at different speeds or with varying degrees of efficiency in the individual channels due to the different positions of the conductor elements, this can lead to uneven filling of the channels. This can lead to the formation of air inclusions or voids due to the uneven distribution of the liquid, which can reduce the mechanical and thermal bonding of the conductor elements to the laminated core. Since the liquid is typically relatively viscous, for example, when a resin material is used, introducing the liquid into the component's channels also results in a comparatively long time-consuming process. The invention is based on the objective of providing an improved method for manufacturing a component, in which, in particular, the distribution of the liquid is improved and the effort is reduced. The problem is solved by a method according to claim 1. The dependent claims relate to possible embodiments. As described, the invention relates to a method for manufacturing a component, in particular a component for an electric machine, wherein a liquid, in particular a resin material, is introduced from an insertion side of the component into at least one channel of the component, in particular a groove in a laminated core of the component. In other words, a component, in particular a component for an electric machine, is manufactured, wherein a liquid, specifically a resin material, is introduced from an insertion side of the component into the at least one channel of the component, for example, a groove in a laminated core of the component. Specifically, the liquid is introduced to secure conductor elements arranged in the channel or to couple them with the laminated core of the component, so that these are mechanically secured in the channel in the component and heat transfer into the laminated core of the component can be carried out in a defined manner. The invention is based on the finding that a gas flow is generated at a suction opening of the channel, which is arranged on a suction side opposite the injection side of at least one channel, and that the gas flow at least assists the introduction of the liquid. The invention thus proposes that, instead of dripping the liquid exclusively into the channel from the injection side, a gas flow is generated at the suction side opposite the injection side, which flows over or along the suction opening located on the injection side. This at least assists the introduction of the liquid, since the liquid introduced into the channel at the injection side is drawn in towards the suction side. In other words, the gas flow generated transversely to the suction opening creates a suction flow through the channel, which draws the liquid introduced at the injection side through the channel. This advantageously reduces the time required to introduce the fluid into the channel. Furthermore, the fluid flow through the channel can be improved, thus reducing or preventing the formation of air inclusions. In addition to reducing cycle time, this also advantageously leads to improved quality due to the more uniform distribution of the fluid in the individual channels of the component. As previously described, the gas flow is generated on the suction side to facilitate the introduction of the gas. The aim is to at least support the flow of the liquid through the channel. For example, the liquid can be introduced into the channels on the inlet side and flow through them due to gravity, with the generated gas flow at least assi