Motor Vehicle Battery Cover with Temperature Sensor Insertion Device
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Solution Overview
Problem
Existing motor vehicle batteries face challenges in accurately and cost-effectively determining battery temperature due to the complexity and expense of temperature sensor placement, as well as the need for additional installation space and maintenance difficulties.
Innovation Solution
A motor vehicle battery design featuring a housing cover with through-openings and an electronics unit between cell poles, allowing for the easy placement and replacement of temperature sensors without disrupting conductor tracks, using an insertion device that positions sensors at the warmest points, such as near the cathode, and utilizing flexible conductor tracks for reliable temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors are placed on each battery cell connector, then temperature monitoring is achieved, but manufacturing cost increases and measurement accuracy decreases
Solution Approach 1:
The invention extracts the temperature sensor from the battery cell connector area and relocates it to the battery housing. This allows temperature monitoring without requiring sensors on each cell connector, reducing the number of sensors needed and simplifying manufacturing while maintaining measurement capability through thermal conduction through the housing material.
Solution Approach 2:
The battery housing material acts as an intermediary medium that conducts thermal energy from the battery cells to the temperature sensor. This allows indirect temperature measurement without direct contact between the sensor and the cells, reducing manufacturing complexity while maintaining measurement accuracy through the thermal conduction properties of the housing material.
2Measurement precision
If temperature sensors are integrated within battery cell housings, then temperature monitoring is achieved, but device complexity increases and maintenance difficulty increases
Solution Approach 1:
The temperature sensor is extracted from the battery cell housing and relocated to the outer battery housing. This external positioning allows the sensor to be accessed, removed, and replaced without disassembling the battery cells or opening sealed compartments, significantly simplifying maintenance and repair operations.
Solution Approach 2:
The battery housing serves multiple functions: it provides structural support, contains the battery cells, and acts as a thermal conduction path to the temperature sensor. This multi-functionality eliminates the need for separate sensor mounting structures within each cell housing, simplifying the overall device structure and facilitating easier sensor replacement.
3Measurement precision
If dummy cells with temperature sensors are arranged between battery cells, then temperature monitoring is achieved, but device volume increases
Solution Approach 1:
The battery housing is designed to serve dual purposes: providing structural containment for the battery cells and serving as the mounting structure for the temperature sensor. This eliminates the need for separate dummy cells that would occupy additional space, as the housing itself becomes the sensor platform, maintaining compact battery design.
Solution Approach 2:
The temperature sensing function is extracted from dedicated dummy cell structures and integrated into the existing battery housing. This eliminates the volume occupied by dummy cells while maintaining temperature monitoring capability, as the housing material itself provides the thermal conduction path to the sensor.
4Reliability
If conductor tracks are arranged on the housing cover, then electrical connection is achieved, but sensor placement complexity increases
Solution Approach 1:
The temperature sensor is extracted from the area beneath the housing cover where conductor tracks are located and repositioned to an accessible location on or near the housing cover. This allows the sensor to be installed and accessed independently without requiring displacement or modification of the conductor tracks, maintaining electrical connection reliability while simplifying sensor placement.
Solution Approach 2:
The housing cover is designed with distinct functional zones: areas for conductor track placement and areas for temperature sensor access. This segmentation allows independent installation and maintenance of electrical and thermal sensing components without interference, reducing overall device complexity while maintaining both electrical reliability and sensor accessibility.
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 enables precise temperature monitoring with reduced manufacturing costs, simplified maintenance, and no additional space requirements, improving the accuracy and accessibility of temperature measurements while minimizing the risk of damaging conductor tracks.
Implementation Method 1
the temperature sensor can be arranged on a section of a cell housing of a cell located below the housing cover
Data Source
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AI summary
The invention relates to a motor vehicle battery and a commercial vehicle, e.g., a bus or a truck, equipped with at least one such motor vehicle battery. The motor vehicle battery (1) comprises a battery module having several battery cells (2) arranged side by side in a stack, a housing cover (5) arranged on the battery cells, having through-openings for the terminals (3a, 3b) of the cells (2), and an electronic unit (6) arranged on the housing cover (5) and between the terminals (3a, 3b) of the cells (2), which is electrically connected to the cells (2) via conductor tracks (8), wherein the housing cover (5) has at least one insertion device (10) for inserting a temperature sensor (20), by means of which the temperature sensor (20) can be arranged on a section of a cell housing (2a) of a cell (2) located below the housing cover (5).