Battery Pack Bracket Assembly Isolates Cooling Plate
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Solution Overview
Problem
Conventional battery packs face challenges in thermal management, particularly in extreme environments, due to direct heat exchange between the cooling plate and the mounting plate of electric vehicles, which reduces cooling or heating efficiency and poses safety hazards from coolant leakage.
Innovation Solution
A bracket assembly is introduced to separate the cooling plate from the mounting plate, comprising longitudinal and transverse beams that form a frame structure, providing air circulation and reducing thermal conductivity, thereby improving temperature regulation efficiency and protecting the cooling plate from external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cooling plate is placed outside the battery case, then the space utilization inside the case is improved and the impact of coolant leakage on the interior is reduced, but the cooling plate may directly contact the mounting plate and exchange heat with it, reducing cooling or heating efficiency in extreme environments
Solution Approach 1:
The patent introduces an insulating layer as an intermediary between the cooling plate and the mounting plate. This insulating layer prevents direct thermal contact while allowing the cooling plate to maintain its external placement, thus preserving both the reliability improvement (coolant leakage isolation) and restoring the cooling/heating efficiency by blocking unwanted heat exchange with the mounting plate.
2Device complexity
If the cooling plate is placed inside the battery case, then the structure is compact, but the existing structure needs to be redesigned and space is limited, and coolant leakage can cause conductivity connection and corrosion of metal parts
Solution Approach 1:
The patent extracts the cooling plate from the interior of the battery case and relocates it to the exterior, positioned between the battery case and the mounting plate. This extraction eliminates the reliability issues associated with internal placement (conductivity connection and corrosion risks from coolant leakage) while avoiding the need for complex internal structural redesign.
3Device complexity
If the cooling plate directly contacts the mounting plate, then the assembly is simple, but heat exchange between the cooling plate and mounting plate reduces cooling or heating efficiency in extreme cold or hot environments
Solution Approach 1:
The patent applies local quality modification by introducing an insulating layer only at the specific contact interface between the cooling plate and the mounting plate, rather than insulating the entire cooling system. This localized approach maintains assembly simplicity while effectively preventing unwanted heat exchange at the critical thermal contact point, thus preserving temperature regulation efficiency.
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
The bracket assembly enhances the cooling or heating efficiency of the battery pack by isolating the cooling plate from the mounting plate's temperature, reducing heat transfer, and providing structural protection, thus ensuring better temperature control and safety.
Implementation Method 1
providing air circulation and reducing thermal conductivity, thereby improving temperature regulation efficiency
Implementation Method 2
the cooling plate may exchange heat with the mounting plate, thereby reducing the cooling or heating efficiency
Data Source
AI summary
The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a casing wherein the battery is placed, a cooling plate located below the casing in a height direction, and a bracket assembly located below the cooling plate in a height direction and fixedly connected to the casing, the bracket assembly is used for direct contact with a mounting plate of the electric vehicle. When the battery pack of the present disclosure is used in an electric vehicle, since the bracket assembly separates the cooling plate from the mounting plate of the electric vehicle, the cooling plate does not need to directly exchange heat with the mounting plate, thereby reducing the influence of the temperature of the mounting plate on the cooling plate, and increasing the cooling or heating efficiency of the cooling plate to the battery inside the casing.