Switchable EV Charging Circuit for Multi-Standard Compatibility
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Solution Overview
Problem
Existing electric vehicle charging systems are limited by their compatibility with specific charging methods and standards, making it difficult for vehicles to utilize different charging infrastructure and increasing production complexity due to the need for vehicle-specific components.
Innovation Solution
A charging device with a switchable connecting mechanism that allows for the adaptation of different charging methods and standards, such as MCS, CCS, and NACS, by varying the path of electrical energy through multiple switching elements, enabling flexible use of various charging interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a vehicle is designed for one specific charging method, then the charging system can be kept simple and production can be standardized, but the vehicle cannot use all available charging stations
Solution Approach 1:
The charging device is designed with multiple switching elements that can be configured to support different charging standards (CCS, NACS, MCS) through a single charging interface. The switching elements enable the same physical interface to adapt its electrical connection pattern according to the detected charging standard, making one charging system universally compatible with multiple standards without requiring separate dedicated interfaces for each standard.
Solution Approach 2:
The charging system incorporates dynamic reconfiguration capability through switching elements that can change their connection state based on the detected charging standard. The control unit dynamically adjusts the switching element positions to match the required charging standard, allowing the system to adapt its internal configuration in real-time rather than being fixed to a single standard.
2Ease of manufacture
If different charging methods require separate components, then each charging standard can be optimized independently, but vehicle production becomes complicated and costs increase
Solution Approach 1:
Instead of producing separate vehicles with different charging components for each standard, the invention enables a single vehicle platform to support multiple charging standards through the switchable charging device. This universal approach simplifies production by standardizing the base charging system while adding multi-functionality through the switching mechanism, reducing manufacturing complexity and costs.
Solution Approach 2:
The invention merges the functionality of multiple charging standard interfaces into a single charging device. By combining the capabilities of CCS, NACS, and MCS support within one unified charging system with shared components (housing, control unit, switching elements), the design reduces the number of separate components needed and simplifies the overall manufacturing process.
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~5C
AI summary
The invention relates to a charging device (10) for an electric vehicle (30), comprising a DC voltage input (12) for electrical connection to at least one charging interface (22, 24) of the electric vehicle (30) and a DC voltage output (14) for connection to an electrical energy storage device (32) of the electric vehicle (30). Furthermore, the charging device (10) has a switchable connection device (16) via which the DC voltage input (12) and the DC voltage output (14) can be electrically connected to each other and which has several switching elements (16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h). The charging device (10) also has a control device (18) for operating the several switching elements (16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h).The control device (18) is configured to operate the several switching elements (16a, 16b, 16c, 16d, 16e, 16f) in a first switching position (S1) for charging the electrical energy storage device (32) using a first charging method, and to operate the several switching elements (16a, 16b, 16c, 16d, 16e, 16f) in a second switching position (S2) for charging the electrical energy storage device (32) using a second charging method.