Power storage device
By aligning energy storage elements and using intersecting busbars for connections, the device addresses vertical size and reliability issues in battery packs, achieving improved connection reliability and reduced resistance.
WO2026105704A1PCT designated stage Publication Date: 2026-05-21GS YUASA INT LTD
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GS YUASA INT LTD
- Filing Date
- 2025-11-10
- Publication Date
- 2026-05-21
AI Technical Summary
Technical Problem
Conventional battery packs with stacked thin batteries face issues of increased vertical length and unreliable connections between electrode terminals due to orthogonal welding, which compromises the reliability of the connection.
Method used
The energy storage device is designed with first and second energy storage elements aligned in a direction, connected via first and second busbars, where the busbars are oriented in a direction intersecting the alignment, allowing for improved reliability and reduced vertical height.
Benefits of technology
This configuration enhances the reliability of connections between energy storage elements while maintaining a compact vertical size, reducing electrical resistance and simplifying the manufacturing process.
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Smart Images
Figure JP2025039240_21052026_PF_FP_ABST
Abstract
This power storage device is provided with a first power storage element and a second power storage element, and a first bus bar and a second bus bar, wherein: the second power storage element is disposed on one side of the first power storage element in a first direction; the first power storage element is provided with a first terminal disposed on the one side in the first direction; the second power storage element is provided with a second terminal disposed on the other side in the first direction; the first terminal is connected to the first bus bar; the second terminal is connected to the second bus bar; the first bus bar and the second bus bar are disposed facing each other in the first direction; the second bus bar is provided with a connection part; and the connection part is connected to the first bus bar in a state of overlapping the first bus bar in a second direction intersecting the first direction.
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