Battery Connection Circuit Wake-Up Using Dual Activation Pulses
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Solution Overview
Problem
Existing power supply devices with battery connection circuits face challenges in reliably reactivating detection circuits and microcomputers from a low power consumption mode, especially when the activation pulse time is short, leading to inconsistent reactivation.
Innovation Solution
Incorporating a dual-pulse activation system where a first switching circuit outputs a short activation pulse to the detection circuit and a second switching circuit outputs a longer pulse to the microcomputer, ensuring both can be reliably activated regardless of the activation switch press duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single activation pulse is used for both the detection circuit and microcomputer, then the circuit configuration is simple, but the microcomputer cannot be reliably activated when the activation pulse is short due to polling state delay
Solution Approach 1:
The patent divides the activation pulse generation into two separate switching circuits: a first switching circuit that generates a short activation pulse for the detection circuit, and a second switching circuit that generates a long activation pulse for the microcomputer. This segmentation allows each circuit to receive appropriately timed activation signals, resolving the contradiction between simple configuration and reliable reactivation.
2Reliability
If users must continuously press the activation switch for a predetermined time to ensure microcomputer activation, then reactivation reliability improves, but ease of operation deteriorates
Solution Approach 1:
The first switching circuit performs preliminary action by immediately activating the detection circuit with a short pulse when the activation switch is pressed. The detection circuit then prepares the microcomputer for activation, allowing the second switching circuit to reliably activate the microcomputer with a long pulse regardless of how long the user holds the switch. This eliminates the need for users to maintain continuous pressure.
3Productivity
If the battery connection circuit remains in operation mode, then detection and control functions are always available, but power consumption increases
Solution Approach 1:
The patent implements periodic action by switching the battery connection circuit between operation mode and low power consumption mode based on usage state. The activation circuit enables transitions between these states through pulse generation, allowing the system to conserve power during idle periods while maintaining functionality when needed.
Data Source
AI summary
A microcomputer and a detection circuit in a low power consumption mode is restarted easily and stably. A power supply device includes a battery module (10) including battery cells (1), a battery connection circuit (2) configured to detect battery information of the battery module (10) and configured to be switched to a low power consumption mode, an activation circuit (3) configured to switch the battery connection circuit (2) from the low power consumption mode to an operation mode, and an activation switch (4) configured to output a switching signal to the activation circuit (3). The battery connection circuit (2) includes a detection circuit (21) configured to detect the battery information and a microcomputer (22) configured to process the battery information detected by the detection circuit (21). The activation circuit (3) includes a first switching circuit (6A) configured to output a first activation pulse to the detection circuit (21) in response to the switching signal input from the activation switch (4), and a second switching circuit (6B) configured to output a second activation pulse having a larger pulse width than the first activation pulse to the microcomputer (22) in response to the switching signal input from the activation switch (4).