Battery Core Assembly Separator Plate Injection Channel
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Solution Overview
Problem
Existing battery pack designs face challenges in increasing capacity while minimizing internal resistance and heating, as they require numerous batteries connected in series, leading to increased costs, weight, and reduced space utilization, with issues in electrolyte injection and sealing.
Innovation Solution
A battery design featuring a case with multiple battery core groups connected in series, separated by a separator plate to form independent receiving cavities, with liquid injection channels on the separator plates for precise electrolyte injection and sealing to prevent inter-cavity electrolyte flow and decomposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large quantity of batteries are connected in series to form a battery group to achieve high voltage and high capacity, then the total capacity and voltage of the battery pack are improved, but the number of battery installation structures increases, leading to increased costs, increased weight, and reduced space utilization
Solution Approach 1:
Multiple battery cores are integrated into a single battery core assembly with shared end plates and connection structures. The battery core assembly combines multiple battery cores in series within one integrated structure, eliminating the need for separate installation structures for each battery, thereby reducing overall complexity and weight while maintaining high capacity
Solution Approach 2:
The end plates and connection structures serve multiple functions simultaneously: they provide mechanical support for multiple battery cores, enable electrical connections between series-connected batteries, and facilitate electrolyte distribution. This multi-functionality reduces the number of separate components needed
2Reliability
If two adjacent batteries are connected through a connector to perform power connection, then the electrical connection is achieved, but the internal resistance is increased, thus increasing internal consumption and heating
Solution Approach 1:
Multiple battery cores are electrically connected in series within the integrated battery core assembly through shared connection structures and end plates, eliminating the need for separate external connectors between adjacent batteries. This reduces the total number of connection interfaces and associated internal resistance
Solution Approach 2:
The external connector function is extracted and integrated into the battery core assembly structure itself. The connection structures are built-in rather than separate components, reducing interface resistance and improving electrical efficiency
3Quantity of substance
If numerous peripheral power connectors are disposed to form power connections, then the voltage and capacity requirements are met, but the internal resistance is increased and the manufacturing complexity increases
Solution Approach 1:
Multiple battery cores are assembled into an integrated battery core assembly with unified end plates and connection structures, reducing the number of separate manufacturing and assembly steps. The assembly can be manufactured as a single integrated unit or pre-assembled module, simplifying the overall manufacturing process
Solution Approach 2:
The battery system is segmented into modular battery core assemblies that can be manufactured independently and then integrated into the battery pack. This modular approach simplifies manufacturing by allowing standardized production of core assemblies
4Quantity of substance
If multiple batteries are disposed side by side, then the capacity is increased, but the space utilization is reduced due to wasted space between batteries
Solution Approach 1:
Multiple battery cores are integrated into a single battery core assembly with shared end plates and connection structures, eliminating the gaps and wasted space that would exist between separate battery installations. The integrated structure allows compact arrangement and maximizes space utilization while maintaining high capacity
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 enhances battery capacity, reduces internal resistance and heating, improves sealing and safety, and simplifies manufacturing by allowing for efficient electrolyte distribution and preventing electrolyte decomposition, thus extending battery life and reducing costs.
Implementation Method 1
a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities
Implementation Method 2
the battery further includes a liquid injection channel in a sealed state, and the liquid injection channel is disposed on at least one of the separation membranes and separator plates
Implementation Method 3
a sealing portion is disposed in the liquid injection channel, and the sealing portion seals the liquid injection channel
Implementation Method 4
the separation membrane is located between the battery core groups and the case, and the separation membrane is connected to the separator plate in a sealed manner to form a sealed receiving cavity
Data Source
AI summary
A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups , and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.