U-Shaped Rigid Battery Connectors for High Voltage EV Packs
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Solution Overview
Problem
Existing systems for electric energy storage in hybrid vehicles face challenges in achieving high overall electric voltage and are costly to implement due to the electrical connection method of chemical batteries, which limits their effectiveness.
Innovation Solution
A system where chemical batteries are connected in series and parallel using U-shaped electrical connection elements made of conductive material, allowing for modular support and easy assembly, with a support matrix that deforms in crashes to disconnect batteries and prevent short-circuits, enabling high voltage generation while being cost-effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If chemical batteries are connected in parallel within rows to achieve high current capacity, then the overall electric voltage at terminals remains limited and the implementation becomes complex and expensive
Solution Approach 1:
The battery pack is divided into multiple rows of batteries, where each row contains batteries connected in series. The rows are then connected in parallel to each other. This segmentation allows achieving high voltage within each row while maintaining high current capacity through parallel row connections, thereby achieving high overall electric voltage without requiring all batteries in a row to be connected in parallel, thus reducing complexity and cost.
Solution Approach 2:
The patent transitions from a single-dimensional connection approach (all batteries in parallel within one row) to a two-dimensional arrangement (multiple rows with series connections within rows, and parallel connections between rows). This dimensional change enables achieving high voltage through series connections in the vertical dimension while maintaining high current capacity through parallel connections in the horizontal dimension, resolving the contradiction between voltage and complexity.
2Quantity of substance
If chemical batteries are connected in parallel within rows, then current capacity increases but the overall electric voltage at terminals is limited
Solution Approach 1:
The battery system is segmented into multiple rows, with each row containing batteries connected in series to achieve high voltage. Multiple such rows are then connected in parallel to achieve high current capacity. This segmentation allows simultaneous achievement of high voltage (through series connections within rows) and high current capacity (through parallel connections between rows), resolving the contradiction between voltage and current capacity.
Solution Approach 2:
The patent uses a two-dimensional connection architecture: the vertical dimension (within rows) employs series connections to achieve high voltage, while the horizontal dimension (between rows) employs parallel connections to achieve high current capacity. This multi-dimensional approach allows both high voltage and high current capacity to be achieved simultaneously without the trade-off present in single-dimensional configurations.
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 system achieves high overall electric voltage at terminals while being simple and inexpensive to implement, with enhanced safety features to prevent short-circuits and mechanical damage during crashes.
Implementation Method 1
U-shaped rigid connection elements made of conductive material, allowing for modular support and easy assembly
Implementation Method 2
each of which has a cylindrical shape having a central symmetry axis and is provided with a respective electrochemical cell
Implementation Method 3
with a support matrix that deforms in crashes to disconnect batteries and prevent short-circuits
Data Source
AI summary
A system for the storage of electric energy for a vehicle with electric propulsion; the storage system is provided with: a pack of chemical batteries, each of which has a cylindrical shape having a central symmetry axis and presents, at one end, a positive pole and, at an opposite end, a negative pole; the batteries are arranged in at least one row, in which all the chemical batteries of the row are parallel to each other and are arranged one next to the other with a predetermined pitch; and with a plurality of electrical connection elements for connecting the poles of the chemical batteries of a same row, so as to create groups of chemical batteries, in which the chemical batteries are connected to each other in parallel, and so as to connect the groups of chemical batteries to each other in series.