Battery Spacer Plate Structure for Strength and Energy Density
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Solution Overview
Problem
The challenge in battery technology is to improve structural strength and energy density while maximizing space utilization, as existing designs often compromise on one aspect to achieve the other.
Innovation Solution
A battery design that incorporates a spacer plate connected to the largest surface area of each battery cell, eliminating the need for side plates and beams, with a spacer plate size greater than 5 mm in one direction, and optionally featuring a chamber for deformation absorption and temperature adjustment, and an insulating layer for safety, to enhance structural strength and energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional side plates and beams are used to strengthen battery structure, then structural strength is improved, but space utilization ratio deteriorates
Solution Approach 1:
The spacer plate merges the functions of structural support and space division into a single component. It connects to the first wall of each battery cell while providing both mechanical strength and defining the internal space, eliminating the need for separate side plates and beams.
Solution Approach 2:
The spacer plate serves multiple functions simultaneously: it provides structural support to maintain battery shape, divides the internal space between battery cells, and connects to the battery cell walls. This multi-functionality reduces the number of components needed and improves space utilization.
2Quantity of substance
If battery cell density is increased to improve energy density, then energy density is improved, but structural stability deteriorates
Solution Approach 1:
The spacer plate is pre-installed between battery cells before final assembly, establishing the structural framework in advance. This preliminary positioning ensures that even as battery cells are densely packed, the structural stability is maintained from the outset.
3Strength
If spacer plate size is increased to improve structural strength, then structural strength is improved, but space for battery cells deteriorates
Solution Approach 1:
The spacer plate dimensions are optimized to specific parameter ranges: thickness of 3-10mm and width/height matching the battery cell configuration. This parameter optimization ensures the spacer plate provides sufficient structural strength while minimizing the space it occupies, maximizing the area available for battery cells.
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 significantly improves space utilization, structural strength, and energy density, while ensuring safety and stability by allowing for deformation absorption and temperature control, thus enhancing overall battery performance.
Implementation Method 1
a chamber is disposed in an interior of the spacer plate. In this way, the spacer plate provided with a chamber structure has an ability to absorb deformation, and can absorb an amount of expansion deformation of the battery cells
Implementation Method 2
the chamber is configured to accommodate a fluid to adjust a temperature of the battery cell
Data Source
AI summary
Embodiments of the present application provide a battery, a power consumption device, and a method and device for producing a battery. The battery includes: a plurality of battery cells arranged in a first direction; and a spacer plate, the spacer plate extending in the first direction and being connected to a first wall of each battery cell of the plurality of battery cells, and the first wall being a wall of the battery cell that has a largest surface area, where a size T1 of the spacer plate in a second direction is greater than 5 mm, and the second direction is perpendicular to the first wall. According to technical solutions of the embodiments of the present application, performance of the battery could be improved.