Wound Electrode Conductive Plate Layout for Battery Heat Dispersion
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Solution Overview
Problem
Electrochemical apparatuses experience temperature rise and potential overheating during high-rate charging, leading to accelerated aging, capacity deterioration, and safety risks.
Innovation Solution
The electrochemical apparatus features a wound electrode assembly with a first conductive plate having a specific design, including a first conductive material layer with a recess and extensions, enhancing current distribution and heat dissipation areas to manage heat dispersion and reduce temperature rise during charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a coin cell battery is disposed of in a landfill, then the battery will eventually decompose, but toxic substances will leak into the environment causing pollution
Solution Approach 1:
The patent converts the harmful toxic substances in the battery into beneficial effects by using them as electrochemical reactants. The manganese dioxide and other materials that would normally pollute the environment are instead utilized to generate electrical energy through electrochemical reactions, transforming environmental hazards into useful energy sources.
Solution Approach 2:
The patent changes the operational parameters of the battery by reversing the electrochemical reactions through electrolysis. By applying external electrical energy, the battery is transformed from a discharged state back to a charged state, fundamentally altering its chemical composition and energy state to enable reuse.
2Duration of action of stationary object
If rechargeable batteries are used, then battery life can be extended, but the cost of the battery increases
Solution Approach 1:
The patent enables the battery to serve itself by implementing a rechargeable system where the battery can be recharged multiple times. The electrochemical cell is designed to undergo reversible reactions, allowing the battery to restore its energy storage capacity through electrolysis without requiring replacement, thereby extending its service life and reducing long-term costs.
Solution Approach 2:
The patent applies preliminary action by pre-charging the battery through electrolysis before it is needed for use. The battery is prepared in advance with full energy capacity, ensuring it is ready for immediate operation and can be reused multiple times, thereby extending its operational lifespan.
3Device complexity
If primary batteries are used, then the device can be simple and inexpensive, but the battery cannot be recharged and must be replaced
Solution Approach 1:
The patent makes the battery universal by designing it to perform multiple functions: it can operate as a primary battery during discharge and as a rechargeable battery during charging cycles. The electrochemical cell structure allows it to adapt between different operational modes, combining the simplicity of primary batteries with the reusability of rechargeable batteries.
Solution Approach 2:
The patent introduces dynamics by enabling the battery to transition between different states of charge and discharge. The electrochemical reactions are made reversible, allowing the battery to dynamically adjust its chemical composition and energy storage capacity based on operational needs, transforming it from a single-use to a multi-use system.
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 improves safety and reliability by dispersing current uniformly and increasing heat dissipation, reducing the risk of local overheating and prolonging the apparatus' service life.
Implementation Method 1
a positive electrode and a negative electrode which are separated from each other with an electrolyte in between, and wherein the positive electrode and the negative electrode are impregnated with different kinds of electrochemical reaction products
Implementation Method 2
a heating element arranged to heat the electrolyte
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
An electrochemical apparatus includes an electrode assembly and a conductive plate. The electrode assembly is of a wound structure and includes a first electrode plate. The first electrode plate includes a first conductive layer and a first conductive material layer. The first conductive layer includes a first surface and a second surface. The first conductive material layer is provided on the first surface. The first surface includes a first region. The conductive plate is connected to the first region and extends out of the first electrode plate. The conductive plate includes a third region and a fourth region connected to each other. The third region includes a connection region. The conductive plate is connected to the first region through the connection region. The third region includes a first side, a second side, a third side, and a fourth side. The first region includes a fifth side, a sixth side, and a seventh side. A size of the third region in the third direction is T1, a size of the third region in the second direction is T2, an area of the third region is S1, an area of the connection region is S2, a distance between the first side and the fifth side is J1, a distance between the second side and the sixth side is J2, and a distance between the third side and the seventh side is J3, where S2/S1 + (J1 + J2 + J3)/(T1 + T2) ≥ 30%. This application further provides an electronic apparatus.