Charge Controller Cooling Mechanism Discrimination

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Solution Overview

Problem

Existing charge controllers for vehicles do not efficiently manage battery temperature during charging, leading to increased electric power consumption and reduced charging efficiency due to the lack of shared cooling mechanism information between the vehicle and charger sides.

Innovation Solution

A charge controller that discriminates the presence of a cooling mechanism on the charger side before initiating the charging process, operating the cooling mechanism on the charger side if available and the vehicle side only when necessary, thereby optimizing cooling and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the cooling mechanism on the vehicle side is operated continuously to ensure battery temperature control, then the battery temperature is maintained within safe limits, but the electric power consumption increases and charging efficiency decreases

Engineering Contradiction:
Improvebattery temperatureVSAvoidelectric power consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The charge controller implements feedback control by continuously monitoring battery temperature and dynamically adjusting the cooling mechanism operation. The controller receives temperature information from the battery and activates or deactivates the cooling mechanism based on whether the temperature exceeds predetermined thresholds, thereby maintaining temperature control while minimizing unnecessary power consumption.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of battery temperature before initiating charging operations. By checking temperature conditions in advance and preparing the cooling mechanism accordingly, the system avoids reactive cooling that would consume excessive power, instead maintaining optimal temperature proactively only when necessary.

Inventive Principle:
Principle #10Preliminary action

2Temperature

If the cooling mechanism on the vehicle side is operated continuously to ensure battery temperature control, then the battery temperature is maintained within safe limits, but the charging efficiency decreases

Engineering Contradiction:
Improvebattery temperatureVSAvoidcharging efficiency
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The charge controller uses feedback control to monitor battery temperature in real-time and adjusts cooling mechanism operation accordingly. By activating cooling only when temperature exceeds thresholds and deactivating it when temperature is acceptable, the system maintains safe battery temperature while minimizing interruptions to the charging process, thereby preserving charging efficiency.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The cooling mechanism operates periodically rather than continuously, activating only during periods when battery temperature requires cooling and remaining inactive during periods when temperature is within acceptable ranges. This periodic operation reduces energy consumption and minimizes interference with the charging process.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS11196280B2Charge controller
Publication Date: 2021.12.07 TOYOTA JIDOSHA KK
  • US11196280B2 patent drawing
  • US11196280B2 patent drawing

AI summary

A charge controller, which controls a charging process for charging a battery mounted on a vehicle by connecting a charging connector of a charger that is installed outside the vehicle to a charging inlet of the vehicle, includes: a controller discriminating whether a cooling mechanism of the charging connector is provided on a charger side before starting the charging process, operating the cooling mechanism of the charging connector if the cooling mechanism of the charging connector is provided, and operating a cooling mechanism of the charging inlet that is provided on a vehicle side if the cooling mechanism of the charging connector is not provided.