Three-Pole Vehicle Battery for 12 V and 48 V Power Supply
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Solution Overview
Problem
The existing battery systems for vehicles with electric or hybrid drives require multiple components and significant space to support different nominal voltages, leading to increased weight and installation space, especially when trying to accommodate both 12 V and 48 V systems simultaneously.
Innovation Solution
A three-pole battery system with a first, second, and third battery pole, where the first pole serves as a common ground, and the second and third poles provide different nominal voltages, allowing the battery to be integrated into two on-board electrical systems with 48 V and 12 V, respectively, using a DC/DC converter to manage voltage conversion and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate batteries are used for 12V and 48V on-board electrical systems, then each system can be independently supplied, but the total weight and installation space increase significantly
Solution Approach 1:
The patent combines two separate batteries (12V and 48V) into a single multi-pole battery unit. The battery has a first pole for 12V output and a second pole for 48V output, allowing both on-board electrical systems to be supplied by one integrated battery rather than two separate units, thereby reducing total weight and installation space while maintaining independent supply capability
Solution Approach 2:
The single battery unit performs multiple functions by providing different voltage outputs through different poles. It simultaneously serves as both a 12V battery and a 48V battery, enabling the same component to support multiple on-board electrical systems with different voltage requirements
2Reliability
If two separate batteries are used for 12V and 48V systems, then voltage requirements are met, but the installation space required increases
Solution Approach 1:
The patent merges two separate battery installations into one compact multi-pole battery unit. By integrating both 12V and 48V capabilities in a single housing with multiple poles, the installation space required is significantly reduced compared to mounting two separate batteries in the vehicle
3Device complexity
If a DC/DC converter is used to replace one generator, then component count is reduced, but weight and installation space remain high
Solution Approach 1:
The patent integrates the function of a DC/DC converter directly into the battery unit by providing multiple poles that output different voltages. This eliminates the need for a separate DC/DC converter component, reducing both the number of components and the overall system weight compared to using a standalone converter
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 configuration reduces the number of components needed, decreases weight and installation space, and allows for more even loading of battery cells, while enabling the battery to supply both 48 V and 12 V systems efficiently, thereby optimizing energy distribution and utilization.
Implementation Method 1
a battery cell arrangement (52) with a first replacement two-pole (54, 56) and with at least one battery cell (26), wherein the at least one battery cell (26) is connected both to the first and second battery pole (44, 46) and to the first and third battery pole (44, 48)
Data Source
Figure 1~2
Figure 3~4a
Figure 4b~4c
AI summary
The invention relates to a battery (42, 102, 122, 136, 152, 162, 172, 182), in particular a vehicle battery, with a first battery terminal (44, 104, 138) and with a second battery terminal (46, 106, 140), wherein, in the charged state of the battery (42, 102, 122, 136, 152, 162, 172, 182), a first nominal voltage can be tapped between the second (46, 106, 140) and the first battery terminal (44, 104, 138), wherein the battery (42, 102, 122, 136, 152, 162, 172, 182) has a third battery terminal (48, 108, 142), wherein, in the charged state of the battery (42,102, 122,136,152, 162,172,182) between the third (48, 108, 142) and the first battery terminal (44, 104,138) a second nominal voltage can be tapped, which differs in magnitude from the first nominal voltage.Furthermore, the invention relates to an on-board electrical system (130) for a vehicle with a first (132) and a second on-board electrical system (134) having different nominal voltages and the previously described battery (42, 102, 122, 136, 152, 162, 172, 182), wherein the battery (42, 102, 12Z, 136, 152, 162, 172, 182) can be connected or is connected to the first on-board electrical system (132) via the first (44, 104, 138) and second battery terminal (46, 106, 140) and to the second on-board electrical system (134) via the first (44, 104, 138) and third battery terminal (48, 108, 142).