USB-C Battery Charging Cable With Overload Protection Clamps
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Solution Overview
Problem
Conventional battery charging cables lack overload protection, risking damage to devices and users in case of short circuits or high transient currents, especially with the increasing power demands met by USB Type-C interfaces which require advanced protection mechanisms.
Innovation Solution
A battery charging cable utilizing a USB Type-C connector with USB Power Delivery (PD) protocol support, equipped with a control chip for current detection, short-circuit protection, and overload protection, allowing for safe transmission of up to 20 V/5 A (100 W) and featuring positive-electrode and negative-electrode clamps for secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional battery charging cables are used to connect high-power devices to power sources, then basic charging function is provided, but overload protection is lacking which may cause device damage or safety hazards
Solution Approach 1:
The patent introduces a control chip as an intermediary component within the cable assembly. This chip acts as a mediator between the power source and the battery, detecting current levels and controlling the switching element to provide overload protection. The control chip transforms the simple cable into a smart protective device without requiring complex external protection circuits.
Solution Approach 2:
The cable assembly performs self-protection through integrated current detection and control mechanisms. The detection element continuously monitors current flow, and the control chip automatically activates the switching element when overload conditions are detected, enabling the cable to protect itself and connected devices without external intervention.
2Power
If USB Type-C interfaces are used to meet higher power demands, then charging power is increased to 20V/5A (100W), but the risk of short circuits and high transient currents increases
Solution Approach 1:
The patent implements preliminary protective measures by integrating a detection element and control mechanism before harmful effects can occur. The system proactively monitors current levels and prepares the switching element for immediate activation when abnormal conditions are detected, preventing short circuit damage before it happens rather than responding after damage occurs.
Solution Approach 2:
The control chip and switching element arrangement provides a cushioning protection layer between the high-power USB Type-C interface and the battery. This protective mechanism absorbs and mitigates harmful transient currents and short circuits before they can reach and damage the battery or power source, cushioning the system against electrical shocks.
3Adaptability or versatility
If existing battery charging cables without protective design are used, then device compatibility is maintained, but user safety is endangered in case of short circuits or exceedingly high transient currents
Solution Approach 1:
The cable assembly maintains universal compatibility with various devices while adding protective functions. The USB Type-C interface and standard clamp structure ensure broad device compatibility, while the integrated control chip and switching element provide universal overload protection across all connected devices, making the cable both versatile and safe.
Data Source
AI summary
A battery charging cable can be connected to a power supplying device and supply electricity to, and thereby charge, the battery of another device when the battery is low in power. The battery charging cable includes a USB Type-C connector at one end and a positive-electrode clamp and a negative-electrode clamp at the other end, wherein the clamps can be respectively clamped to the positive and negative electrodes of the battery of a device to be charged. With the battery charging cable supporting a USB Power Delivery protocol, and the USB Type-C connector configured to provide a relatively high voltage and power, the battery charging cable provides overload protection and has great power transmission performance.