Search

EP-4736588-A1 - POWER MODULE, POWER SUPPLY SYSTEM AND VEHICLE

EP4736588A1EP 4736588 A1EP4736588 A1EP 4736588A1EP-4736588-A1

Abstract

The present disclosure relates to a power module and a power supply system. The power module comprises: a housing comprising a plurality of mounting posts extending from a bottom thereof; a first circuit board configured to be connected to the housing via the plurality of mounting posts; a shielding plate configured to be disposed between the bottom of the housing and the first circuit board, the shielding plate comprising a main body and a plurality of mounting arms, and the plurality of mounting arms extending away from the main body toward the first circuit board, wherein the plurality of mounting arms are configured to correspond to the plurality of mounting posts, and the shielding plate is connected to the housing via the cooperation between the mounting arms and the mounting posts.

Inventors

  • QU, GONGYUAN
  • LI, RONGHUI
  • ZHU, Yuncong

Assignees

  • Valeo eAutomotive Germany GmbH

Dates

Publication Date
20260506
Application Date
20240619

Claims (13)

  1. 1. A power module, comprising: a housing comprising a plurality of mounting posts extending from a bottom thereof; a first circuit board configured to be connected to the housing via a first number of mounting posts among the plurality of mounting posts; and a shielding plate configured to be disposed between the bottom of the housing and the first circuit board, the shielding plate comprising a main body and a plurality of mounting arms, and the plurality of mounting arms extending away from the main body toward the first circuit board; wherein the plurality of mounting arms are configured to correspond to the first number of mounting posts, and the shielding plate is connected to the housing via the cooperation between the mounting arms and the mounting posts.
  2. 2. The power module according to claim 1, further comprising: a second circuit board configured to be connected to the housing via a second number of mounting posts among the plurality of mounting posts, wherein the shielding plate divides the housing into a first housing portion and a second housing portion along a mounting direction, the first housing portion being used to accommodate the first circuit board, the second housing portion being used to accommodate the second circuit board, wherein one of the first circuit board and the second circuit board is a filter circuit board.
  3. 3. The power module according to claim 1, wherein the first number of mounting posts have mounting surfaces disposed at ends portions thereof, and the shielding plate and the first circuit board are pressed against and mounted to the mounting surfaces by means of a first fastener.
  4. 4. The power module according to claim 3, wherein each of the plurality of mounting arms has a mounting tab disposed at a free end portion thereof, and the mounting tab is connected to the main body by a flexible pivoting portion.
  5. 5. The power module according to claim 4, wherein before mounting, a first height from the mounting tab to the main body is equal to or less than a second height from the corresponding mounting surface to the main body, so that there is no gap between the mounting tab and the mounting surface.
  6. 6. The power module according to claim 4, wherein before mounting, a first height from the mounting tab to the main body is greater than a second height from the corresponding mounting surface to the main body, so that there is a gap between the mounting tab and the mounting surface.
  7. 7. The power module according to claim 2, wherein the second circuit board is mounted to the housing by means of a second fastener, and the shielding plate further comprises a protrusion disposed on the main body protruding towards the first circuit board, the protrusion being used to accommodate at least a portion of the second fastener.
  8. 8. The power module according to claim 1, wherein a periphery of the housing has a supporting edge, and the main body abuts against the supporting edge along the mounting direction.
  9. 9. The power module according to claim 8, wherein a compressible conductive material is provided between the housing and the shielding plate, and the compressible conductive material is arranged corresponding to the supporting edge.
  10. 10. The power module according to claim 9, wherein the compressible conductive material comprises an elastomeric material.
  11. 11. The power module according to any one of claims 1 to 10, wherein the mounting arms are formed by stamping and bending the main body.
  12. 12. A power supply system, comprising the power module according to any one of claims 1 to 11.
  13. 13. A vehicle, comprising the power supply system according to claim 12.

Description

POWER MODULE, POWER SUPPLY SYSTEM AND VEHICLE TECHNICAL FIELD The present disclosure relates to a power module and a power supply system including such a power module. BACKGROUND An electric or hybrid vehicle has an electric drive assembly system, which needs to be powered by a power module, such as an on-board power module. With the popularity of more and more compact products on vehicles, a requirement for integrated and compact design of power modules has also emerged. According to the requirement for integrated and compact design, one or more circuit boards in the power module, such as a main circuit board and/or a filter circuit board, need to be stacked vertically in the housing of the power module. In addition, considering electromagnetic compatibility, the circuit board needs to be provided with a shielding plate for electromagnetic shielding. However, the mounting space for mounting the circuit board and the shielding plate on the housing is limited. Therefore, it is necessary to arrange a plurality of circuit boards and shielding plates in a limited housing space to meet the requirement for integrated and compact design of the vehicles. SUMMARY OF THE DISCLOSURE In view of the problem and requirement mentioned above, the present disclosure proposes a new type of power module and a power supply system comprising such a power module, which solve the above problem and bring about other technical effects by adopting the following technical features. On the one hand, the present disclosure provides a power module, comprising: a housing comprising a plurality of mounting posts extending from a bottom thereof; a first circuit board configured to be connected to the housing via a first i number of mounting posts among the plurality of mounting posts; and a shielding plate configured to be disposed between the bottom of the housing and the first circuit board, the shielding plate comprising a main body and a plurality of mounting arms, and the plurality of mounting arms extending away from the main body toward the first circuit board; wherein the plurality of mounting arms are configured to correspond to the first number of mounting posts, and the shielding plate is connected to the housing via the cooperation between the mounting arms and the mounting posts. According to the above features, the present disclosure provides a solution for vertically stacking the circuit board and the shielding plate, making full use of the mounting posts of the housing, so that the first circuit board and the shielding plate share the same mounting post and the same fastener, without the need for additional mounting structures, effectively utilizing the compact internal space of the housing, and realizing the integrated and compact design of the power module. In some examples, the power module further comprises a second circuit board configured to be connected to the housing via a second number of mounting posts among the plurality of mounting posts, wherein the shielding plate divides the housing into a first housing portion and a second housing portion along a mounting direction, the first housing portion being used to accommodate the first circuit board, the second housing portion being used to accommodate the second circuit board, wherein one of the first circuit board and the second circuit board is a filter circuit board. According to the above features, due to the high space utilization, the power module proposed in the present disclosure can accommodate a plurality of circuit boards, and the circuit boards are separated by the shielding plate to meet the requirement of electromagnetic compatibility. In the description of the present disclosure, the mounting direction refers to an assembly direction in which the circuit board and the shielding plate are mounted in the housing. For example, in a vertically stacked power module, the mounting direction is a vertical direction from top to bottom. In other embodiments not shown, the mounting direction may also be a horizontal direction or other linear direction or a curved direction. Electromagnetic compatibility (EMC) refers to the ability of a device or system to work normally in its electromagnetic environment and not to cause electromagnetic disturbance to anything in the environment. According to the definition of EMC, electronic equipment need to meet an EMC design indicator. On the one hand, it is necessary to ensure that the electronic equipment has a certain degree of immunity to the electromagnetic interference in an environment in which it is located. On the other hand, it is required that the electromagnetic interference generated by the electronic equipment to the environment in the process of operation does not exceed a specified limit. When designing an EMC solution, the general design idea is to add a filter device such as a magnetic ring or a magnetic buckle at a DC end and/or an AC end, and to set a filter circuit board assembly on a transmission pa