Lead-Carbon Battery for 48V Vehicle Power Supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 12V/48V dual-voltage power supply system faces challenges due to the sensitivity of lithium ion batteries to temperature, requiring longer cables and increased cost, and existing lithium batteries cannot meet the Cold Cranking Ampere requirements at low temperatures, limiting the adoption of the 48V light hybrid system.
Innovation Solution
Replacing lithium ion batteries with lead-carbon batteries, which are less sensitive to temperature, allowing for reduced cable lengths and lower costs, and providing a 48V power supply capable of meeting high-power demands, while also enabling cold start functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If lithium ion batteries are used in the 48V power supply system, then the system can support high-power electrical devices, but the battery becomes sensitive to temperature requiring longer cables and increased cost
Solution Approach 1:
The patent changes the chemical composition parameters of the battery by replacing lithium ion batteries with lead-carbon batteries. This parameter change fundamentally alters the temperature sensitivity characteristics while maintaining the high power supply capability needed for 48V systems, thereby resolving the contradiction between power capability and temperature sensitivity
Solution Approach 2:
The lead-carbon battery uses a composite structure combining lead dioxide positive plates with carbon-based negative plates. This composite material approach creates a battery system that exhibits both high power output and low temperature sensitivity, simultaneously achieving the previously conflicting requirements
2Power
If lithium ion batteries are used, then high-power demand can be met, but cable length must be increased and cost increases
Solution Approach 1:
By changing the battery type from lithium ion to lead-carbon, the patent alters the temperature performance parameters, which directly enables shorter cable lengths and reduced manufacturing costs while preserving high-power capability
Solution Approach 2:
The lead-carbon battery technology offers a more cost-effective alternative to expensive lithium ion batteries. Although lead-carbon batteries have different lifecycle characteristics, the significant cost reduction in materials, cables, and installation makes the overall system more economically viable
3Power
If lithium ion batteries are used, then 48V system requirements are met, but cold start functionality is not achieved
Solution Approach 1:
The patent changes the electrochemical parameters of the battery system by adopting lead-carbon technology, which maintains stable voltage and current output characteristics at low temperatures. This enables the battery to reliably support engine cold starting while simultaneously meeting 48V system power requirements
Solution Approach 2:
The lead-carbon battery serves multiple functions simultaneously: it provides 48V high-power supply for electrical devices and maintains cold start capability for the engine. This multi-functionality resolves the contradiction by making a single battery system capable of both roles
4Adaptability or versatility
If 12V/48V dual-voltage system is implemented, then compatibility with traditional and emerging devices is achieved, but system complexity increases
Solution Approach 1:
The lead-carbon battery is designed to provide both 12V and 48V output capabilities through a single battery system. This multi-functionality maintains compatibility with both traditional 12V devices and emerging 48V high-power devices while avoiding the need for separate battery systems, thereby reducing overall system complexity
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 lead-carbon battery system reduces vehicle manufacturing costs, maintains system performance, and eliminates the need for a 12V lead acid battery, enhancing the 48V light hybrid system's feasibility by providing stable high-power output and cold start capabilities.
Implementation Method 1
a battery system including a lead-carbon battery
Implementation Method 2
the AC/DC converter includes a DC terminal and an AC terminal
Data Source
AI summary
A power supply module for a vehicle comprises a battery system (13) including a first output terminal (Out 1) and a second output terminal (Out 2), wherein the battery system (13) is connected with a AC/DC converter (12) of the vehicle, the AC/DC converter (12) includes a DC terminal (DC) and an AC terminal (AC), the DC terminal (DC) is connected with the first output terminal (Out 1) of the battery system (13) and the AC terminal (AC) is connected to a motor generator (11) of the vehicle cooperating with the power supply module (10), so as to form a first output (i1), wherein the second output terminal (Out 2) is connected to a power supply distribution center (17) of the vehicle, so as to form a second output (i2), and wherein the battery system (13) includes a lead-carbon battery. There are also provided a power supply system comprising the power supply module for a vehicle, a vehicle comprising the power supply system for a vehicle, and a method of arranging a power supply module for a vehicle. The lithium ion battery and the battery management system in the prior art are replaced with the lead-carbon battery. As the working environment temperature has little influence on the lead-carbon battery, the freedom for the arrangement position of the lead-carbon battery is increased. It is no longer necessary to arrange the lead-carbon battery away from the engine, or additionally take heat preservation factors into account. The lead-carbon battery may be arranged under the engine hood or next to the engine. As a result, the length of the cable required for connection will be greatly shortened, which effectively lowers the manufacturing cost.