In-Vehicle Charging Control Module Switching Circuit

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional in-vehicle charging control devices continuously consume energy from the vehicle's battery even when the vehicle is not charging, leading to increased energy consumption.

Innovation Solution

An in-vehicle charging control device with a switching circuit that only powers the control module when the charging plug is plugged into the socket, using a charging connection confirming terminal and a protective grounding terminal to form a closed circuit, thereby reducing energy consumption by disconnecting power when the plug is not inserted.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the in-vehicle charging control device continuously monitors charging status, then the charging control function is reliable, but the energy consumption of the in-vehicle battery increases

Engineering Contradiction:

Improvecharging control functionVSAvoidenergy consumption of in-vehicle battery

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The charging control device transitions from continuous monitoring to periodic monitoring by only activating the control module when charging triggering conditions are met (plug insertion detected or charging button pressed). This periodic activation maintains charging control reliability while significantly reducing energy consumption during non-charging periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system performs preliminary detection of plug insertion status and charging triggering conditions before activating the control module. By detecting these conditions in advance through the switching circuit and control module, the system ensures reliable charging control is ready when needed while avoiding continuous operation.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If the control module is always powered on, then the real-time monitoring capability is maintained, but the energy consumption increases

Engineering Contradiction:

Improvereal-time monitoring capabilityVSAvoidenergy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The control module operates periodically rather than continuously, activating only when charging triggering conditions are detected (plug insertion or charging button press). This periodic operation maintains real-time monitoring capability during charging events while reducing overall energy consumption during non-charging periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts the power state of the control module based on charging conditions. The switching circuit and control module transition between powered-on and powered-off states according to real-time charging status, optimizing the balance between monitoring capability and energy consumption.

Inventive Principle:

Principle #15Dynamics

3Stability of the object's composition

If the switching circuit connects the in-vehicle battery to the control module continuously, then the control module has stable power supply, but unnecessary energy is consumed when charging is not needed

Engineering Contradiction:

Improvepower supply stabilityVSAvoidunnecessary energy consumption

Core Design Contradiction:

Stability of the object's compositionVSLoss of energy

Solution Approach 1:

The switching circuit establishes stable power connection only during periods when charging is needed (when plug is inserted or charging button is pressed). This periodic connection provides stable power supply during charging operations while eliminating unnecessary energy consumption during non-charging periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The switching circuit is configured to establish power connection in advance when charging triggering conditions are detected (plug insertion detected by control module). This preliminary action ensures stable power supply is ready when charging begins while avoiding continuous connection and associated energy waste.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2759035B1In-vehicle charging control device, vehicle charging system and vehicle

Publication Date: 2021.01.06 BYD CO LTD

Figure 1~2
Figure 3

AI summary

An in-vehicle charging control device may be provided. The in-vehicle charging control device may comprise a control module (3), a charging socket (4) and a switching circuit (2). The charging socket (4) has a charging connection confirming terminal (CC) and a protective grounding terminal (PE). The switching circuit (2) is connected with the charging connection confirming terminal (CC) and the protective grounding terminal (PE) of the charging socket (4) respectively. The control module (3) is connected with an in-vehicle battery (1) via the switching circuit (2). The charging socket (4) is matched with a charging plug (5). The switching circuit (2) is in a conducting state when the charging plug (5) plugs in the charging socket (4) or in a disconnection state when the charging plug (5) does not plug in the charging socket (4). Further, a vehicle charging system and a vehicle may also be provided.