Battery Pack Connector Terminals for Detachable Cell Group Assembly
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Solution Overview
Problem
Existing battery pack designs face challenges in simplifying the connection and disconnection of multiple secondary cell groups while ensuring reliable electrical contact and preventing overcharging/overdischarging, which complicates the integration and use of battery packs in various applications.
Innovation Solution
The battery pack design incorporates a circuit board with multiple connector terminals and a connector housing system, allowing for separable connections between cell groups, enabling easy physical release or connection of cell groups in parallel or series configurations, and includes elastic support tabs for secure yet detachable contact, simplifying the combination structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple secondary cells are connected in series and/or parallel to implement high-output or high capacity power storage device, then the power storage capacity and output are improved, but the device complexity and connection management become more complicated
Solution Approach 1:
The battery pack is divided into multiple cell groups (first cell group, second cell group, third cell group) that can be independently connected in series or parallel configurations. Each cell group contains one or more secondary cells, allowing flexible segmentation of the overall battery system to achieve desired power and capacity while simplifying individual group management.
Solution Approach 2:
The connector design enables dynamic reconfiguration of cell group connections. The connector terminals can be selectively connected or disconnected to change between series and parallel configurations, allowing the battery pack to adapt its electrical characteristics based on application requirements without permanent structural changes.
2Ease of operation
If connector terminals are made separable to allow easy assembly and disassembly, then the ease of operation is improved, but the reliability of electrical contact may be compromised
Solution Approach 1:
The connector is segmented into multiple independent connector terminals, each handling specific electrical connections between cell groups. This segmentation allows individual terminals to be designed with optimized contact mechanisms while maintaining overall separability of the connector assembly for easy assembly and disassembly.
Solution Approach 2:
The connector terminals incorporate curved or bent contact surfaces (e.g., the L-shaped configuration of connector terminal 2-1 with connection tab and support tab). These curved geometries ensure reliable electrical contact through point or line contact while maintaining the ability to separate the connector components for assembly and disassembly operations.
3Ease of manufacture
If connector structure is simplified to reduce device complexity, then the manufacturing ease is improved, but the reliability of connection and disconnection may be affected
Solution Approach 1:
The connector housing integrates multiple functional elements into a single structural component. The housing simultaneously provides mechanical support for multiple connector terminals, defines the tab insertion holes, and incorporates the fixing protrusions for securing terminals. This merging of functions simplifies manufacturing while maintaining reliable connection and disconnection capabilities.
Solution Approach 2:
The connector housing acts as an intermediary structure that mediates between the simple structural form and the complex electrical connection requirements. It provides the framework that enables multiple separate electrical contacts while maintaining overall structural simplicity and ease of manufacture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for a simple and reliable physical connection or disconnection of cell groups, enhancing the usability and safety of battery packs by ensuring secure electrical contact while allowing for easy assembly and disassembly, thus improving the overall efficiency and reliability of the power storage device.
Implementation Method 1
a support tab extended from the connection tab, and having elasticity so that the connection tab is separable from the conductive pad
Data Source
AI summary
A battery pack is disclosed. In one aspect, the battery pack includes first and second cell groups each including one or more cells, a circuit board electrically connected to the first and second cell groups and a connector provided in the circuit board and including a plurality of connector terminals. The connector terminals include first and second connector terminals respectively electrically connected to first and second electrodes of the first cell group. The connector terminals include first and second connector terminals respectively electrically connected to first and second electrodes of the second cell group. The first and third connector terminals are detachably in contact with each other, wherein the second and fourth connector terminals are detachably in contact with each other. According to some embodiments, it is possible to simply physically release a parallel connection of a plurality of cells or a plurality of cell groups.