High-Voltage Control Box Wiring for Switchable CAN Termination
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Solution Overview
Problem
Existing high-voltage control boxes require manual disassembly and reassembly to add or remove terminal resistors, which is time-consuming and labor-intensive, and lack versatility for different usage requirements.
Innovation Solution
A high-voltage control box design that includes a terminal resistor within the control box body, connected via a wiring assembly to external connectors, allowing easy connection or disconnection without disassembling the box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the terminal resistor is not preset inside the high-voltage control box, then the control box structure remains simple and production is convenient, but when a terminal resistor is needed, the control box must be disassembled and the wiring harness modified, which is time-consuming and laborious
Solution Approach 1:
The patent applies preliminary action by pre-setting the terminal resistor inside the control box body during manufacturing, along with pre-configuring the wiring harness with connection points. This preliminary preparation eliminates the need for disassembly and modification during subsequent installation or configuration changes, as the terminal resistor and its wiring are already in place and ready for activation.
Solution Approach 2:
The patent implements universality by designing a wiring harness that can accommodate both scenarios - with and without terminal resistor connection. The wiring harness includes configurable connection points that can be activated or deactivated based on requirements, making the same control box design universal for different application needs without requiring separate designs or disassembly operations.
2Ease of operation
If the terminal resistor is preset inside the control box body with a wiring assembly, then future installation is easier and no disassembly is needed, but the control box structure becomes more complex and production may be more difficult
Solution Approach 1:
The patent applies segmentation by dividing the wiring system into modular components - the terminal resistor, the wiring assembly, and the connection points are separated as distinct elements within the control box. The wiring assembly includes discrete connection points that can be independently configured, allowing the system to maintain a relatively simple overall structure while providing the functionality of preset terminal resistor installation capability.
3Adaptability or versatility
If manual disassembly and reassembly is required to add or remove terminal resistors, then the control box can be customized, but the process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent eliminates time loss by performing the wiring preparation in advance during manufacturing. The wiring harness is pre-configured with connection points and the terminal resistor is pre-positioned inside the control box body, so that when installation or configuration is needed, no time-consuming disassembly or wiring modification is required - the system is already prepared for immediate activation.
Solution Approach 2:
The patent achieves versatility without time loss through a universal wiring design that can accommodate different configuration requirements using the same pre-prepared structure. The wiring assembly includes configurable connection points that can be activated based on specific usage requirements, allowing the same control box design to serve multiple purposes without requiring time-consuming customization or disassembly operations.
Data Source
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AI summary
A high-voltage control box includes a control box body, a terminal resistor, and a wiring assembly. A CAN bus and a battery management unit are provided inside the control box body. The CAN bus includes a high wire and a low wire, which are connected to the battery management unit. The terminal resistor is provided inside the control box body. The wiring assembly is installed on a wall of the control box body, and is connected to the high wire, the low wire and the terminal resistor. The terminal resistor is disconnected from the high wire and/or the low wire, and the wiring assembly is configured to be connected with an external electrical connector to enable the terminal resistor to be electrically connected with the high wire and the low wire through the wiring assembly and the external electrical connector.