Secondary Battery Case With Stepped Circuit Accommodator
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Solution Overview
Problem
Existing secondary batteries have unnecessary internal dead space and physical interference issues when used as power sources in devices, leading to increased volume and potential movement within the device.
Innovation Solution
A secondary battery design featuring first and second battery cells facing each other, with a case that includes cell and circuit accommodators, where the circuit accommodator has a downward step, reducing overall volume and preventing physical interference by matching the battery's shape to the device's mounting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery includes separate cell accommodators and circuit accommodator, then the protection circuit is properly accommodated and controlled, but unnecessary internal dead space is created increasing overall volume
Solution Approach 1:
The circuit accommodator is merged with the cell accommodators to form an integrated case structure. The case includes first and second cell accommodators that accommodate battery cells, and a circuit accommodator formed between the cell accommodators that accommodates the protection circuit. This integration eliminates unnecessary internal dead space while ensuring proper accommodation and control of the protection circuit.
2Volume of stationary object
If the battery uses a compact design, then volume is reduced, but physical interference with device components occurs and the battery shakes or moves inside the device
Solution Approach 1:
The case is designed with different local structures: cell accommodators with blocking portions and rim portions that surround front ends of battery cells, and a circuit accommodator with a downward step than top surfaces of cell accommodators. This localized structural differentiation reduces overall volume while preventing physical interference with device components and preventing battery movement inside the device.
3Ease of manufacture
If the circuit accommodator has the same height as cell accommodators, then manufacturing is simplified, but unnecessary dead space remains increasing volume
Solution Approach 1:
The circuit accommodator is designed with a downward step than top surfaces of the first and second cell accommodators. This local structural variation in the case design eliminates unnecessary internal dead space and reduces overall battery volume while maintaining ease of manufacture through integral formation of the case components.
Data Source
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AI summary
A secondary battery is disclosed. In one aspect, the battery includes first and second battery cells facing each other and a case comprising first and second cell accommodators respectively at least partially accommodating the first and second battery cells, and a circuit accommodator formed between the first and second cell accommodators and accommodating a protection circuit configured to control charging and discharging operations. The circuit accommodator has top and bottom surfaces opposing each other, and each of the first and second cell accommodators has top and bottom surfaces opposing each other. The top surface of the circuit accommodator has a downward step with respect to the top surfaces of the first and second cell accommodators.