Electric Vehicle Multi-Battery System Electronic Role Designation
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Solution Overview
Problem
Conventional multi-battery systems for electric vehicles are not user-friendly for setting master and slave batteries, and exposed switches are prone to moisture intrusion, leading to circuit damage.
Innovation Solution
A multi-battery system with a first and second connector, each having an identification unit, and a detection unit in each battery, allowing microcontrollers to set batteries as master or slave based on predetermined electric potential values, eliminating the need for physical switches and reducing moisture exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a setting switch is used to designate master or slave battery, then the battery role can be set, but the switch is exposed to moisture intrusion causing circuit damage
Solution Approach 1:
The patent replaces the mechanical setting switch with an electronic identification system. The microcontroller automatically detects the battery's role (master or slave) by reading identification information from the connector, eliminating the need for exposed mechanical switches and their associated vulnerability to moisture intrusion.
Solution Approach 2:
The patent introduces an identification unit and detection mechanism as an intermediary between the battery connector and the microcontroller. This intermediary system automatically determines battery role through electrical connection detection, removing the need for direct user interaction with exposed switches.
2Ease of operation
If a setting switch is used to set battery roles, then master and slave batteries can be designated, but the method is not convenient for users
Solution Approach 1:
The patent implements a self-service system where the battery system automatically designates master and slave roles without requiring user intervention. The microcontroller autonomously detects the battery configuration through the identification unit and configures the system accordingly, improving both convenience and reliability.
Solution Approach 2:
The patent replaces the manual mechanical switch operation with an automated electronic detection and configuration system, eliminating the need for users to physically set switches while preventing moisture-related circuit damage.
3Adaptability or versatility
If exposed switches are used for battery setting, then battery roles can be configured, but moisture intrusion causes circuit damage
Solution Approach 1:
The patent replaces exposed mechanical switches with a sealed electronic identification system. The battery role configuration is performed through electrical connection detection via the identification unit, which is integrated into the connector and protected from environmental factors like moisture.
Solution Approach 2:
The patent extracts the battery role setting function from the external mechanical switch and integrates it into the electrical connection interface itself. The identification unit is incorporated directly into the connector structure, removing the separate exposed switch component that was vulnerable to moisture.
Data Source
AI summary
A multi-battery system includes a plurality of batteries, a first connector having a first identification unit, and a second connector having a second identification unit. Each battery includes a microcontroller, and a battery connector having a detection unit. The first connector is for electrically connecting a battery connector of a first battery of the plurality of batteries and a motor controller. The second connector is for electrically connecting a battery connector of a second battery of the plurality of batteries and the motor controller. When the first identification unit is set to a first predetermined value, and a detection unit of the first battery is electrically connected to the first identification unit, a microcontroller of the first battery sets the first battery as a master battery.