Battery Pack Control Device Layout for Compact Module Integration
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Solution Overview
Problem
The existing configuration of battery management systems (BMS) in battery packs, where the control device is positioned above the battery modules, leads to increased housing size, hindering miniaturization and energy density.
Innovation Solution
A battery pack design where the control device and low-voltage connection assembly are positioned in the gap between battery modules, allowing for a compact structure, improved energy density, and simplified assembly by utilizing a staggered configuration and L-shaped brackets for secure mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the control device is disposed above the battery modules, then the control device can be easily mounted, but the housing size increases
Solution Approach 1:
The control device is repositioned from a vertical arrangement (above battery modules) to a horizontal arrangement (in the gap between battery modules). This dimensional change allows the control device to utilize previously unused horizontal space, reducing the housing size without compromising mounting ease
Solution Approach 2:
The control device is nested within the existing gap structure between battery modules, effectively utilizing the available space. The low-voltage connection assembly is also positioned within this gap, creating a compact nested arrangement that minimizes overall housing volume
2Ease of operation
If the control device is disposed above the battery modules, then the control device is easily accessible, but the energy density decreases
Solution Approach 1:
By transitioning from vertical to horizontal positioning, the control device occupies space that would otherwise be available for battery modules. This preserves the quantity of active materials while maintaining accessibility through the gap configuration
Solution Approach 2:
The gap between battery modules is specifically utilized to house the control device and connection assembly. This localized use of space converts previously wasted space into functional space, maintaining energy density while ensuring accessibility for maintenance and operation
3Device complexity
If the low-voltage connection assembly is disposed above the battery modules, then the electrical connection is simplified, but the housing size increases
Solution Approach 1:
The low-voltage connection assembly is merged with the control device by positioning both within the same gap between battery modules. This combined arrangement simplifies the electrical connection path while minimizing the space required, as both components share the same spatial envelope
Solution Approach 2:
The low-voltage connection assembly is nested within the gap structure, with the control device also positioned in the same gap. This nested configuration allows both components to coexist in a compact arrangement, reducing housing size while maintaining connection simplicity
Data Source
AI summary
The present disclosure provides a battery pack and a vehicle that facilitate miniaturization of the battery pack. A battery pack includes: a housing including a bottom plate; battery modules configured on the bottom plate, including first battery modules and second battery modules, a gap being disposed between the first battery modules and the second battery modules; a control device disposed in the gap; and a low-voltage connection assembly electrically connecting the battery module and the control device, the low-voltage connection assembly being disposed in the gap, located between the control device and the battery module, and located below the control device.