Battery Pack Terrace Portion Layout for Compactness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face spatial interference issues between protective circuit modules and current breaking devices, leading to increased size and reduced compactness due to the need for additional mounting holes or grooves to prevent interference.
Innovation Solution
The protective circuit module and current breaking device are arranged on opposite surfaces of a terrace portion within the battery pack's casing, eliminating the need for additional mounting features and allowing for a more compact design by avoiding spatial interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the protective circuit module and current breaking device are arranged on the same side of the terrace portion, then the electrical connection between them is simplified, but spatial interference occurs requiring additional holes or grooves that increase the overall size
Solution Approach 1:
The patent transitions from a two-dimensional arrangement (both components on the same side of the terrace portion) to a three-dimensional arrangement (components on opposite sides of the terrace portion). This spatial reconfiguration eliminates the need for additional holes or grooves through the protective circuit module, thereby reducing the overall battery pack size while maintaining electrical connectivity through the terrace portion structure.
2Ease of manufacture
If additional holes or grooves are formed in the protective circuit module to prevent spatial interference, then the current breaking device can be mounted, but the width of the protective circuit module increases
Solution Approach 1:
By moving the current breaking device to the opposite side of the terrace portion from the protective circuit module, the patent eliminates the need for lateral holes or grooves that would increase module width. The electrical connection is maintained through the terrace portion, achieving mounting capability without increasing the protective circuit module's width.
Solution Approach 2:
The current breaking device is effectively nested within the vertical space of the battery pack structure, utilizing the depth dimension created by the terrace portion rather than requiring additional lateral space. This allows the component to be integrated without increasing the width of the protective circuit module.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure provides a battery pack. The battery pack includes: a battery cell including an electrode assembly to which an electrode tab may be connected, and first and second casings which face each other and may be coupled to each other to form an accommodation portion accommodating the electrode assembly and form a terrace portion extending across the electrode tab to seal the accommodation portion, the terrace portion including a first surface on the first casing and a second surface on the second casing; a protective circuit module electrically connected to the battery cell and arranged on the first surface of the terrace portion; and a current breaking device electrically connected to the protective circuit module and arranged on the second surface of the terrace portion. According to the present disclosure, the battery pack includes: the protective circuit module forming a charge-discharge path of the battery cell; and the current breaking device configured to limit charge-discharge current in response to an abnormal state of the battery cell such as overheating of the battery cell, wherein the protective circuit module and the current breaking device do not spatially interfere with each other, and the battery pack is advantageous for compactness.