Battery Thermal Resistance Element for Heat Management
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Solution Overview
Problem
New battery concepts for motor vehicles face challenges in safely managing operating temperature, as they must operate within a defined range to prevent fatal consequences from heat dissipation issues during charging and discharging, necessitating effective heat dissipation solutions.
Innovation Solution
The battery design incorporates a thermal resistance element with increased thermal resistance, arranged between the connection pole and battery cell, which directs heat away from the battery cell and towards a heat sink for efficient dissipation, and includes an electrical isolating element to prevent overheating by interrupting current flow when limits are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation is improved by directing heat away from the battery cell, then the battery can operate at higher temperatures and maintain performance, but the complexity of the thermal management system increases due to the need for thermal resistance elements and heat sinks
Solution Approach 1:
A thermal resistance element is introduced as an intermediary component between the battery cell and the connection pole. This element selectively blocks heat flow from the battery cell while allowing electrical current to pass through, thereby managing temperature without requiring complex active thermal management systems
Solution Approach 2:
Heat is extracted from the battery cell by directing it through the connection pole away from the cell. The connection pole serves dual functionality as both an electrical conductor and a heat dissipation pathway, eliminating the need for separate cooling components
2Reliability
If thermal resistance is increased to protect the battery cell from heat, then the battery cell is protected from overheating, but the connection element becomes a bottleneck for heat dissipation
Solution Approach 1:
The thermal resistance element is placed locally at the connection pole rather than uniformly throughout the battery structure. This localized approach protects the battery cell from heat while allowing heat to be dissipated efficiently through the connection pole to the housing and heat sink
Solution Approach 2:
Instead of trying to conduct heat away from the battery cell through the connection pole, the design inverts the approach by using the connection pole as a heat blockage element. Heat is forced to take an alternative pathway through the housing and heat sink, protecting the battery cell while maintaining dissipation 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
This design effectively directs heat away from the battery cell, ensuring reliable operation near permissible temperature limits and extending battery service life by reducing thermal stress.
Implementation Method 1
the connecting element between the connection pole and the battery cell has the thermal resistance element with an increased thermal resistance... heat that is produced and/or is present essentially runs in the opposite direction to the Battery cell flows
Implementation Method 2
the heat can then be dissipated at the heat sink by radiation, convection, forced convection or the like into the area surrounding the battery
Implementation Method 3
the heat can then be dissipated at the heat sink by radiation, convection, forced convection or the like into the area surrounding the battery
Data Source
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AI summary
The invention relates to a battery (1), in particular for a motor vehicle, comprising a housing (2). In the housing (2), there is at least one battery cell (4) for storing electrical energy. On the housing (2), there is at least one connection pole (5, 6) for electrically connecting the battery (1) to a load. Furthermore, the battery (1) has a connecting element (7, 8) for electrically connecting the connection pole (5, 6) to the battery cell (4). The connecting element (7) between the connection pole (5) and the battery cell (4) comprises a thermal resistance element (9) having an elevated thermal resistance such that arising and/or present heat flows substantially in a direction (10) opposite to the battery cell (4) and/or is substantially prevented from flowing to the battery cell (4).