接口母线和电连接组件
By designing a flexible connection interface busbar, the installation error problem between the interface busbar and the fuel cell system and power conversion unit was solved, improving reliability and assembly efficiency, adapting to different installation environments, and reducing the risk of breakage and short circuit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Installation errors and manufacturing tolerances in the existing interface busbars between the fuel cell system and the power conversion unit lead to poor contact, which can easily cause fatigue fracture, thermal expansion and contraction, short circuits, and power supply failure.
Design an interface busbar with flexible connection, having a rigid electrical connection part and a flexible part. The flexible part can deform to adapt to different positioning requirements, absorb external stress, and improve reliability.
It improves the reliability and assembly efficiency of the interface busbar, reduces the risk of breakage and short circuit, adapts to different installation environments, and enhances the stability of electrical connections.
Smart Images
Figure CN224520390U_ABST
Abstract
Claims
1. An interface bus for electrically connecting an electrochemical cell to a power conversion unit, characterized by, The interface bus includes a first electrical connection portion (110) electrically connected to the electrochemical cell, a second electrical connection portion (120) electrically connected to the power conversion unit, and a flexible portion (130) flexibly connecting the first electrical connection portion and the second electrical connection portion. The first electrical connection portion and the second electrical connection portion are formed as rigid components, and the flexible portion is deformable to allow the first electrical connection portion and the second electrical connection portion to move relative to each other. The flexible portion includes a bending segment (130'), at least a portion of which is located outside the main plane (P) defined by the first electrical connection portion. The bending segment is configured to be able to stretch and compress in the extension direction (X) and the longitudinal direction (Y) such that the second electrical connection portion can move relative to the first electrical connection portion in the longitudinal direction and the extension direction, wherein the extension direction is from the first electrical connection portion to the second electrical connection portion, and the longitudinal direction is perpendicular to the main plane.
2. The interface bus of claim 1, wherein, The bent section is located only on one side of the main plane, and when viewed from a direction perpendicular to the extension direction and the longitudinal direction, the bent section is U-shaped.
3. The interface bus of claim 1, wherein, The bending segment includes a first bending segment (131) located on one side of the main plane and a second bending segment (132) located on the opposite side of the main plane, and the bending segment is S-shaped when viewed from a direction perpendicular to the extension direction and the longitudinal direction.
4. The interface bus according to any one of claims 1 to 3, characterized in that The first electrical connection portion (110) and the second electrical connection portion (120) are respectively formed with connection ports for electrical connection, and the interface busbar is vulcanized in the parts other than the connection ports.
5. The interface bus according to any one of claims 1 to 3, characterized in that The first electrical connection part and the second electrical connection part are provided with conductive posts (140), and the conductive posts are provided with threaded holes (141). Screws are configured to be inserted into the threaded holes so that the first electrical connection part and the electrochemical cell, and the second electrical connection part and the power conversion unit are fastened together and form an electrical connection.
6. The interface bus of claim 5, wherein, The interface busbar is made of copper, and the first electrical connection part or the second electrical connection part is connected to the conductive post by welding. The first electrical connection part and / or the second electrical connection part is plated with silver, tin or nickel.
7. The interface bus of claim 6, wherein, The flexible part is a stacked multilayer copper busbar, with each layer of copper busbar spaced apart from each other, and the first electrical connection part and / or the second electrical connection part have different thicknesses from the flexible part.
8. The interface bus according to any one of claims 1 to 3, characterized in that The interface busbar is electroplated either entirely or partially.
9. An electrical connection assembly configured to electrically connect an electrochemical cell with a power conversion unit, characterized in that, The electrical connection assembly includes a positive interface busbar for electrical connection to the positive electrode of the electrochemical cell, a negative interface busbar for electrical connection to the negative electrode of the electrochemical cell, and a housing covering the positive interface busbar and the negative interface busbar, wherein at least one of the positive interface busbar and the negative interface busbar is an interface busbar according to any one of claims 1 to 8.