Rotational Battery Pack Terminal Layout for Collision-Free Coupling
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Solution Overview
Problem
Conventional battery packs experience reduced durability and poor connections due to frequent collisions and heavy loads on connection terminals when inserted into external devices, leading to shortened lifespan and inconvenience.
Innovation Solution
A battery pack design featuring a second connection terminal that contacts a first connection terminal through rotational movement, minimizing load transmission and collision, with an elastic member to cushion insertion and a guide bar to prevent incorrect alignment, enhancing durability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery pack is inserted into the external device with conventional connection terminals, then electrical connection is established, but collision between connection terminals occurs during insertion causing reduced durability
Solution Approach 1:
The patent changes the insertion direction of the connection terminal from vertical (parallel to battery pack insertion) to horizontal (perpendicular to battery pack insertion). The connection terminal protrudes from the side surface of the battery pack housing rather than the top surface, allowing electrical connection without collision during vertical insertion of the battery pack.
Solution Approach 2:
The patent introduces a guide groove and guide protrusion mechanism as intermediaries to control the insertion process. The guide groove on the housing guides the battery pack insertion path, while the guide protrusion on the connection terminal ensures proper alignment, preventing collision during the insertion process.
2Duration of action of moving object
If insertion and withdrawal of the battery pack is repeated, then the battery pack can be used multiple times, but the connection terminals are damaged and durability decreases due to frequent collisions
Solution Approach 1:
By changing the connection terminal insertion direction to be perpendicular to the battery pack insertion direction, the patent eliminates collision during repeated insertions and withdrawals. The connection terminal remains stationary relative to the battery pack insertion motion, allowing multiple usage cycles without damage.
Solution Approach 2:
The guide groove and guide protrusion act as intermediaries that constrain the relative motion between the battery pack and connection terminal during insertion and withdrawal, ensuring smooth operation without collision even after repeated cycles.
3Power
If the load of the battery pack increases, then the battery pack can provide higher power output, but heavy load is transmitted to the connection terminal causing severe damage
Solution Approach 1:
By orienting the connection terminal horizontally (perpendicular to battery pack insertion), the patent creates a more favorable load distribution. The connection terminal is positioned to better withstand the mechanical stress from heavy battery pack loads, reducing damage risk while maintaining high power output capability.
4Ease of operation
If the connection terminal is positioned to facilitate electrical connection, then power transmission to external devices is enabled, but collision during insertion inevitably occurs
Solution Approach 1:
The patent positions the connection terminal on the side surface of the battery pack housing, protruding horizontally rather than vertically. This dimensional change allows the battery pack to be inserted vertically into the external device without the connection terminal colliding, while still enabling easy electrical connection.
Solution Approach 2:
The guide groove and guide protrusion serve as intermediaries that facilitate the insertion process by ensuring proper alignment between the battery pack and external device, making the connection process easy while preventing collision through controlled guidance.
Data Source
AI summary
A battery pack, a power system, and a vehicle include a connection terminal with high durability. The battery pack is configured to electrically connect to a power system including a mounting portion having an accommodating space and at least one first connection terminal located in the accommodating space of the mounting portion. The battery pack includes a plurality of battery cells, a pack housing having an internal space in which the plurality of battery cells are accommodated with the battery pack to be inserted into the accommodating space of the mounting portion and to be coupled to the mounting portion at an insertion portion through a rotational movement, and a second connection terminal electrically connected to the plurality of battery cells, and configured to be contactable with the first connection terminal when the pack housing is coupled to the mounting portion through the rotational movement.