Charging Control Device with Current Sensor for Battery Compensation
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Solution Overview
Problem
Existing charging control modules for portable electronic devices limit battery charging current when an internal application consumes power, leading to increased battery charging time and potential discharging when temperature is outside a specified interval, disrupting constant battery state and charging efficiency.
Innovation Solution
A charging control device with a current sensor and filtering module that dynamically adjusts the current distribution between the battery and internal applications, ensuring constant battery charging time by compensating for application current demands and managing temperature constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the charging control module limits battery charging current when an internal application consumes power, then the application can operate, but the battery charging time increases
Solution Approach 1:
The patent introduces a current sensor as an intermediary component that measures the actual current consumed by the application. This measured current is then used by the charging control module to calculate and provide the exact compensation current needed, allowing the battery to be charged at full speed while the application operates without interruption.
Solution Approach 2:
The system implements a feedback mechanism where the current sensor continuously monitors application current consumption and feeds this information back to the charging control module. The control module uses this feedback to dynamically adjust the current distribution, ensuring that the battery receives sufficient charging current while meeting the application's power demands.
2Reliability
If the charging control module stops delivering current when battery temperature is outside the chosen interval, then the battery is protected, but the battery discharges itself supplying the operational application
Solution Approach 1:
The current sensor acts as an intermediary that enables the system to distinguish between current needed for application operation and current available for battery charging. Even when temperature conditions prohibit charging, the system can accurately measure and compensate for application current consumption, preventing unwanted battery discharge.
Solution Approach 2:
The system changes the control parameter from a binary on/off charging decision to a continuous current compensation approach. By using the current sensor to measure actual application current consumption, the system can dynamically adjust the charging current parameter to maintain stable battery charge state while accommodating temperature constraints.
3Ease of operation
If the battery charging current is reduced to supply application current, then the application can operate, but the charging efficiency decreases
Solution Approach 1:
The current sensor provides real-time feedback on application current consumption, enabling the charging control module to optimize current distribution. This feedback mechanism ensures that the minimum necessary current is allocated to the application while maximizing the current available for battery charging, thereby maintaining high charging efficiency.
Solution Approach 2:
The system transforms the fixed current allocation approach into a dynamic parameter adjustment strategy. By continuously measuring application current consumption and adjusting the charging current parameter accordingly, the system achieves optimal balance between application operation and charging efficiency.
Data Source
AI summary
A charging control device (D) is installed in a piece of electronic equipment (EE) comprising a rechargeable battery (B) and at least an internal application (A) requiring an application current for its operation. This device (D) comprises a charging control module (CCM) arranged to be coupled to a charger (CH), to be fed with a charge current when it is connected to mains, and coupled i) to the battery (B) to control its charge and provide it with a chosen battery current when so required and when its temperature is within a chosen interval, and ii) to the application (A) to provide it with the application current when the electronic equipment (EE) is connected to the charger (CH). The device (D) also comprises a current sensor means (SM) arranged to determine the current consumed by the application (A) and to deliver a first signal representative of this current consumption. The charging control module (CCM) is further arranged i) either to provide the application (A) with an application current equal to the current represented by the first signal while forcing the battery (B) to keep its charge when its temperature is outside the chosen interval, ii) or to provide the application (A) with an application current equal to the current represented by the first signal while providing the battery (B) with a chosen battery current in order that it may be simultaneously charged when its temperature is within the chosen interval.