Dual Battery Group Architecture Without a Low-Voltage Battery
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Solution Overview
Problem
Conventional vehicles require low voltage batteries for electrical needs, which occupy significant space, incur replacement costs, and pose safety concerns due to frequent failures.
Innovation Solution
Implement a battery system with two battery groups and DC-DC converters to manage high voltage directly to low voltage loads, eliminating the need for low voltage batteries by using a redundant power supply structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a low voltage battery is used to power vehicle electrical components, then the vehicle can operate low voltage loads, but the battery occupies significant space and requires frequent replacement
Solution Approach 1:
The patent extracts the low voltage battery from the vehicle electrical system and replaces it with a high voltage battery coupled to a DC-DC converter. The low voltage battery function is taken out and substituted by the high voltage power source through power conversion, eliminating the need for separate low voltage battery compartments and reducing overall space occupation.
Solution Approach 2:
The high voltage battery serves multiple functions: it provides high voltage power for propulsion and simultaneously serves as the low voltage power source through the DC-DC converter. This multi-functional approach eliminates the need for separate low voltage and high voltage batteries, reducing space while maintaining reliable low voltage power supply for all electrical components.
2Ease of operation
If a low voltage battery is installed in the vehicle, then electrical distribution can be provided, but bulky electrical distribution components are required
Solution Approach 1:
The patent merges the high voltage power distribution system with the low voltage power distribution system by using a single high voltage battery coupled to a DC-DC converter. This consolidation eliminates the need for separate low voltage battery compartments and associated distribution components, reducing system complexity while maintaining full electrical distribution capability.
Solution Approach 2:
The DC-DC converter acts as an intermediary device that bridges the high voltage battery and the low voltage electrical loads. It converts high voltage to low voltage and provides isolation between the high and low voltage systems, enabling simplified power distribution architecture while maintaining electrical distribution capability for all vehicle components.
3Object-generated harmful factors
If a low voltage battery is used in conventional vehicles, then power for vehicle components can be supplied, but the battery requires frequent replacement during vehicle lifecycle
Solution Approach 1:
The patent extracts the low voltage battery from the system and replaces it with a high voltage battery coupled to a DC-DC converter. This eliminates the frequent replacement issue associated with low voltage batteries while maintaining continuous reliable power supply to all electrical components through the high voltage power source.
Solution Approach 2:
The patent changes the voltage parameter of the power source from low voltage (12V) to high voltage (400V or higher), using a DC-DC converter to step down to required low voltage levels. This parameter change enables the use of a more reliable, long-life high voltage battery while maintaining the electrical characteristics needed by vehicle components, thereby reducing replacement frequency and associated costs.
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
Reduces space and maintenance costs while enhancing safety and sustainability by providing fault-tolerant power distribution without low voltage batteries.
Implementation Method 1
a first direct current to direct current (DC-DC) converter connected to the first battery group and to a first cluster; and a second DC-DC converter connected to the second battery group and to a second cluster
Data Source
AI summary
An electric vehicle battery system is provided. In some embodiments, the battery system can comprise a battery pack comprising a first battery group and a second battery group, wherein the first battery group comprises one or more battery cells and the second battery group comprises one or more battery cells. In various embodiments, the battery system can further comprise a first direct current to direct current (DC-DC) converter connected to the first battery group and to a first cluster. In one or more implementations, a second DC-DC converter can be connected to the second battery group and to a second cluster.