Battery Box Partition Channel Assembly for Precise Cell Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery box assemblies face issues with inaccurate partition positioning, leading to uneven pressure on battery cells, which can cause extrusion, safety risks, and reduced service life due to damage at the joint between the partition and end plate.
Innovation Solution
The end plate is designed with at least two channels, and the partition is equipped with corresponding inserting portions that fit into these channels, ensuring accurate positioning through clamping and restraining forces, with bending regions to disperse stress and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the partition is connected to the end plate without accurate positioning structures, then the assembly process is simpler, but the partition positioning accuracy deteriorates, causing uneven pressure on battery cells and potential extrusion
Solution Approach 1:
The partition is segmented into a body portion and inserting portions, where the inserting portions are separately formed and then connected to the body. This segmentation allows the inserting portions to be precisely fitted into channels on the end plate, ensuring accurate positioning while maintaining assembly simplicity through modular construction.
Solution Approach 2:
The inserting portions act as intermediary elements between the partition body and the end plate. These inserting portions fit into channels on the end plate and provide precise positioning, serving as a mediator that ensures accurate alignment without requiring complex positioning structures on the main partition body.
2Strength
If the partition is rigidly connected to the end plate, then the structural strength is improved, but the stress concentration at the joint increases, leading to potential damage and reduced service life
Solution Approach 1:
The bending regions are pre-formed in the inserting portions to provide stress absorption capacity before actual loading occurs. These pre-formed flexible zones act as cushioning elements that prevent stress concentration at the joint between the partition and end plate, thereby improving reliability and service life while maintaining sufficient joint strength.
Solution Approach 2:
The inserting portions undergo parameter changes in their structural properties through the bending regions, which allow controlled flexibility and stress distribution. By changing the rigidity parameter locally in the bending regions while maintaining strength in other areas, the design achieves both strong joints and reduced stress concentration.
3Device complexity
If single inserting portion is used to connect partition to end plate, then the device complexity is reduced, but the positioning stability deteriorates due to lack of mutual restraint
Solution Approach 1:
The connection structure is segmented into multiple inserting portions (at least two) distributed on the partition. This segmentation provides multiple positioning points that mutually restrain each other, enhancing positioning stability without requiring a overly complex monolithic connection structure.
Solution Approach 2:
Multiple inserting portions provide counterbalancing restraint forces that stabilize the partition positioning. The inserting portions work in opposition to each other to prevent excessive movement or deformation, creating a balanced stable configuration without adding excessive complexity.
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 stabilizes the partition's position, preventing extrusion of battery cells and enhancing the safety and service life of the battery by ensuring accurate assembly and distributing stress, thus reducing the risk of joint damage.
Implementation Method 1
the bending region stretches and deforms to disperse stress, so as to alleviate deformation and damage due to stress on the joint
Implementation Method 2
each of the inserting portions including a connecting region and a bending region, with the connecting region connected to the body through the bending region; where each channel of the at least two channels fits with the at least one inserting portion by inserting, so that the connecting region of each of the inserting portions abuts against an inner wall of a fitting channel
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The present application relates to the technical field of batteries, in particular to a case body assembly, a battery, an electrical device, and a method and apparatus for manufacturing the case body assembly. The case body assembly comprises: an end plate, wherein at least two channels are provided in the end plate; and a partition plate, wherein the partition plate is used for connection to the end plate and separates an internal space of the case body assembly. The partition plate comprises a body and at least two insertion portions located at one end of the body, wherein one end of each insertion portion is connected to an end portion of the body, each insertion portion comprises a connection region and a bending region, and the connection region is connected to the body by means of the bending region; and each channel of the at least two channels is inserted into and matches the at least one insertion portion, such that the connection region of each insertion portion abuts against one inner wall of the matched channel, so as to connect the partition plate to the end plate. The present application uses the inner walls of the channels to position the insertion portions, and the plurality of insertion portions are mutually constrained, such that the partition plate is stably positioned at the current position, thereby ensuring that the partition plate is accurately positioned, and achieving the aims of improving the safety and prolonging the service life of the battery.