Multi-Pack Connectivity Detection Using Preliminary Action
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Solution Overview
Problem
Existing battery protection circuits in devices with multiple packs struggle to determine proper connectivity between components without powering them, leading to inefficiencies and safety risks such as faulty connections, discharge, shorts, or fires during manufacturing and use.
Innovation Solution
A system with multiple protection circuit modules (PCMs) in a parallel configuration that tests connectivity between components without powering them, using conductors to determine connection states and delaying power enablement until connections are verified, thereby preventing faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If protection circuits wait until components are fully powered to determine connectivity, then power management is simplified, but safety and reliability deteriorate due to inability to detect faulty connections beforehand
Solution Approach 1:
The protection circuit performs connectivity detection before enabling power to components. The system checks whether components are properly connected during an initialization phase prior to power-on, allowing faulty connections to be identified and addressed before they can cause damage during operation.
2Speed
If components are powered without prior connectivity testing, then device startup is faster, but safety risks increase due to undetected faulty connections
Solution Approach 1:
The system performs connectivity detection during an initialization phase before enabling component operation. This preliminary check ensures that all components are properly connected before power is applied, preventing safety issues such as unwanted discharge, shorts, leakage, or fire while maintaining efficient startup procedures.
Solution Approach 2:
The protection circuit proactively identifies and prevents potential harmful effects by detecting connectivity faults before they can manifest as safety risks. The system checks connection integrity in advance, blocking power delivery to improperly connected components and thereby preventing discharge, shorts, leakage, or fire hazards.
3Device complexity
If existing protection circuits are used without connectivity detection, then device complexity is reduced, but manufacturing and repair efficiency deteriorate due to inability to test components without operation
Solution Approach 1:
The protection circuit serves multiple functions: it provides overcharge protection, discharge protection, and connectivity detection. By integrating these functions into a single circuit design, the system achieves comprehensive component monitoring and testing capabilities without significantly increasing overall device complexity, thereby improving manufacturing and repair efficiency.
Data Source
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AI summary
Techniques for enabling multi-pack and component connectivity detection are provided. In some configurations, individual PCMs can test the connectivity between components of a device without the need to operate the components. For example, PCMs configured in accordance with the present disclosure can test the connectivity between a motherboard, a display circuit, a camera, and a number of battery packs without the need to operate the motherboard, display circuit, camera, etc. In some configurations, conductors that are part of cables and connectors used to connect the components can be used to determine the state of one or more connections. When a signal that runs through the conductors meets one or more criteria, the PCMs of a device cause a predetermined delay prior to enabling one or more components. By testing the connectivity between components before each component transitions to an operational state, other problems caused by faulty connections can be mitigated.