Current Collecting Board Assembly for Power Battery Pack
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Solution Overview
Problem
Traditional power battery packs using lithium iron phosphate batteries face issues with installation stability, electrical connection stability, and height due to rigid connections, and lack effective protection against short circuits and easy disassembly of abnormal batteries.
Innovation Solution
A power battery pack design featuring a current collecting board assembly with elastic members and conductive components that securely connect batteries through dielectric housings, allowing for stable electrical connections and easy assembly/disassembly, while incorporating fuses for short-circuit protection and reducing pack height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single batteries are fixed and electrically connected to PCB and electrode boards by through holes with rigid screw and nut connections, then electrical connection is established, but installation stability and electrical connection stability are poor and the screw may be damaged when the power battery pack suffers vibration
Solution Approach 1:
The patent changes the connection parameter from rigid mechanical screw-nut connection to elastic contact through spring-loaded conductive components. This allows the connection to maintain stable electrical contact while accommodating vibrations and misalignments, resolving the contradiction between installation stability and connection strength.
Solution Approach 2:
The patent replaces the mechanical screw-nut fastening system with an elastic contact system using spring-loaded conductive components. This substitution eliminates the vulnerability of rigid mechanical connections to vibration damage while maintaining reliable electrical connection and installation stability.
2Reliability
If single batteries are fixed and electrically connected by through holes with rigid screw and nut connections, then electrical connection is established, but height of the power battery pack increases
Solution Approach 1:
The patent transitions from vertical through-hole penetration connections to horizontal elastic contact connections on the battery surface. This dimensional change allows electrical connection without increasing battery pack height, while the elastic components provide stable electrical connection through contact pressure rather than mechanical fastening.
3Reliability
If lead-plates are welded to batteries for series and parallel connection, then electrical connection is established, but when one battery is abnormal it is inconvenient to disassemble and replace the abnormal battery
Solution Approach 1:
The patent segments the battery pack into independently connectable battery units, each with its own elastic contact components. This segmentation allows individual batteries to be easily removed and replaced without affecting other batteries, while the elastic contacts maintain stable electrical connection for each unit.
Solution Approach 2:
The patent introduces elastic conductive components as intermediaries between battery terminals and the current collecting board. These intermediaries provide stable electrical connection while enabling easy battery replacement, as the elastic components can accommodate battery removal and reinstallation without permanent deformation or damage.
4Reliability
If traditional connection methods are used without elastic components and fuses, then device complexity is reduced, but protection against short circuits is lacking
Solution Approach 1:
The patent incorporates fuses and elastic contact components into the connection structure during manufacturing. These components perform protective functions in advance - the fuses are pre-positioned to interrupt short circuits, and the elastic components are pre-configured to provide stable electrical connection, eliminating the need for additional protective devices and reducing overall system complexity.
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
The design enhances installation and electrical stability, facilitates quick battery replacement, and provides shockproof protection against short circuits, reducing the overall height of the battery pack.
Implementation Method 1
the first elastic member comprises a number of first elastic arms extending into the first though hole and abut against one end of the single battery
Data Source
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AI summary
A power battery pack, includes first housing comprising a first main portion having a first fixing surface and a first connection surface; a number of first receiving portions extending upwardly from the first fixing surface; the first main portion defining a number of first through holes, each first receiving portion surrounding a respective first through hole; a number of first limiting portions extending upwardly from the first connection surface and each first limiting portion surrounding a part of first through holes; a second housing comprising a second main portion having a second fixing surface and a second connection surface; a number of second receiving portions extending upwardly from the second fixing surface; the second main portion defining a number of second through holes, each second receiving portion surrounding a respective second through hole; a number of second limiting portions extending upwardly from the second connection surface and each second limiting portion surrounding a part of second through holes; a number of single batteries, each single battery comprising an anode and a cathode at two ends; two ends of each single battery being received in a first receiving portion and a respective second receiving portion; and a current collecting board assembly comprising two electrode board assemblies respectively received in a first limiting portion and a number of intermediate board assemblies, each intermediate board assemblies being received in a first limiting portion or a second limiting portion.