Integrated Power Domain Controller With Shared Pre-Charge Circuits
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Solution Overview
Problem
Current high-voltage systems in battery electric vehicles have a low integration level, leading to increased vehicle space and cost due to overlapping functions in components like battery distribution boxes and junction boxes, and lack shared circuits for high-voltage pre-charge and low-voltage control.
Innovation Solution
A power domain integrated controller integrating motor control, subsidiary drive control, integrated DCDC module, and power distribution module, with a timing wake-up module to monitor battery status and prevent depletion, and a centralized power distribution design to reduce parts and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery distribution box, junction box, and auxiliary drive integrated controller are integrated separately in multiple components, then each component can perform its specific function, but the overall system integration level remains low and vehicle space is wasted
Solution Approach 1:
The patent merges the battery distribution box, junction box, and auxiliary drive integrated controller into a single integrated controller. This combining of previously separate components achieves high-level integration while reducing the total space occupied by multiple discrete units, directly resolving the contradiction between integration level and space utilization.
Solution Approach 2:
The integrated controller is designed to perform multiple functions simultaneously: power distribution, circuit protection, auxiliary drive control, and pre-charge operations. This multi-functional design allows a single component to replace multiple specialized components, improving system integration while optimizing vehicle space.
2Reliability
If separate high-voltage boxes and junction boxes are used with overlapping functions, then each component can be optimized for its specific role, but system cost increases
Solution Approach 1:
By combining the functions of the high-voltage box and junction box into a single integrated controller, the patent eliminates redundant components and their associated costs. The merged design maintains functional optimization through modular internal architecture while reducing overall system cost by eliminating duplication.
Solution Approach 2:
The integrated controller incorporates multiple specialized functions within a single unit, including power distribution capabilities, protection mechanisms, and auxiliary drive control. This universal design reduces the need for multiple separate optimized components, thereby lowering system cost while maintaining functional reliability.
3Ease of operation
If the motor controller and auxiliary drive integrated controller cannot share pre-charge and control circuits, then each controller can be independently designed, but the system complexity and cost increase
Solution Approach 1:
The patent merges the motor controller and auxiliary drive controller into a single integrated unit that shares common pre-charge circuits and control resources. This combining approach reduces system complexity by eliminating redundant circuits while maintaining independent control capabilities through software or logical separation within the integrated architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the high-voltage system architecture, reduces weight and cost, monitors battery status to prevent depletion, and ensures safe charging, while sharing pre-charging circuits and improving electromagnetic compatibility.
Implementation Method 1
The DCDC unit is configured to convert high voltage electricity provided by the power supply system into low voltage electricity
Data Source
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AI summary
The present invention relates to a vehicle and a power domain integrated controller, which belongs to the field of new energy battery electric vehicles. The controller includes a motor control module, a subsidiary drive control unit, an integrated DCDC module, and a power distribution module that are integrated. One end of the motor control module, the subsidiary drive control unit, the integrated DCDC module, and a power distribution module is configured to connect to a power supply system through a corresponding line, and an other end is configured to connect to a corresponding vehicle device. The integrated DCDC module includes a DCDC unit and a battery monitoring unit. The DCDC unit is configured to convert high voltage electricity provided by the power supply system into low voltage electricity and provide the low voltage electricity to a low-voltage vehicle device. The battery monitoring unit is configured to monitor a status of the power supply. The controller features a high integration level, which reduces a quantity of existing parts and lowers costs.