Battery Cell Heat Conduction Layout for Dense Insulated Packs

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Solution Overview

Problem

Existing battery technologies face challenges in improving energy density while ensuring electrical insulation and heat conduction, particularly when maximizing internal space utilization.

Innovation Solution

Incorporating a heat conducting member connected to the largest surface area of each battery cell, with a dimension of 0.1-100 mm in the perpendicular direction, to conduct heat and ensure electrical insulation, thus optimizing space utilization and performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a large number of battery cells are assembled in parallel to increase current discharge capability, then the current discharge capability is improved, but the winding complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvecurrent discharge capabilityVSAvoidwinding complexity

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The battery pack is divided into multiple independent battery modules, each containing a subset of battery cells. This segmentation allows the current discharge capability to be increased by adding more modules in parallel while keeping each module's winding complexity manageable and standardized.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple battery cells are wound and stacked in a nested configuration where cells are arranged in layers within a compact structure. This nesting approach enables a large number of cells to be assembled in parallel while maintaining organized, standardized winding patterns that reduce manufacturing difficulty.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Quantity of substance

If battery cells are tightly packed to increase energy density, then the energy density is improved, but the heat dissipation performance deteriorates

Engineering Contradiction:

Improveenergy densityVSAvoidheat dissipation

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

Different regions of the battery pack are designed with different properties: the central regions contain tightly packed battery cells for high energy density, while the peripheral regions incorporate heat dissipation structures such as cooling plates and thermal management channels. This local differentiation allows simultaneous optimization of both energy density and heat dissipation performance.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Thermal management components such as cooling plates and heat dissipation structures are introduced as intermediary elements between battery cells. These intermediaries facilitate heat transfer from the tightly packed cells to the cooling system, enabling high energy density while maintaining effective heat dissipation.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Volume of moving object

If battery cells are wound and stacked in a compact arrangement to reduce volume, then the volume efficiency is improved, but the consistency of electrical connection deteriorates

Engineering Contradiction:

Improvebattery pack volumeVSAvoidelectrical connection consistency

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

Battery cells are pre-wound and pre-assembled into standardized modules with predetermined electrical connections before final stacking. This preliminary action ensures consistent electrical connections are established under controlled conditions, and the modular design maintains this consistency even when multiple modules are stacked in a compact arrangement to reduce overall volume.

Inventive Principle:

Principle #10Preliminary action

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 approach enhances energy density, ensures electrical insulation, and maintains effective heat conduction, improving overall battery performance without compromising safety.

Implementation Method 1

the battery case is provided with a heat dissipation structure... the battery case is aluminum alloy or aluminum alloy plated material with good heat conduction performance

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

a cooling liquid flow channel is formed in the battery case... the cooling liquid flow channel is in communication with the heat dissipation structure

Methodology Applied

Scientific EffectConvection cooling: Convection

Data Source

PatentEP4258437B1Battery and electric device

Publication Date: 2026.04.22 CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

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AI summary

Provided are a battery (10), a power consumption device, a method (300) and a device (400) for producing a battery. The battery (10) includes: a plurality of battery cells (20) arranged along a first direction (x); a heat conducting member (101) extending along the first direction (x) and connected to a first wall (2111) of each battery cell (20) in the plurality of battery cells (20), the first wall (2111) being a wall with the largest surface area in the battery cell (20), the heat conducting member (101) being configured to conduct heat of the battery cell (20), and a surface of the heat conducting member (101) connected to the first wall (2111) being an insulating surface; and where a dimension of the heat conducting member (101) in a second direction (y) is 0.1~100mm, and the second direction (y) is perpendicular to the first wall (2111). The technical solution of embodiments of the present application may enhance performance of the battery.