Battery Protection Bypass Circuit for Emergency Load Power
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Solution Overview
Problem
Existing battery protection circuits disconnect the battery from the load during emergency situations, preventing the supply of additional power despite the battery's capability to provide it.
Innovation Solution
An apparatus comprising a protection circuit unit, a bypass unit, and a control unit that allows the battery to supply emergency power by bypassing the protection circuit when an emergency situation is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protection circuit operates to prevent overdischarge or overcharge, then battery safety is improved, but the available voltage range is limited and emergency power supply is prevented
Solution Approach 1:
The protection circuit is segmented into a normal protection mode and an emergency bypass mode. The bypass unit with switching element creates a separate current path that can be activated independently when emergency power is needed, allowing the system to switch between safety protection and emergency power supply functions.
Solution Approach 2:
The bypass unit acts as an intermediary between the battery and the load. When the switching element turns on, this intermediary component creates an alternative current path that bypasses the protection circuit's voltage limiting function, enabling emergency power supply while the protection circuit remains active for normal operation.
2Stability of the object's composition
If the protection circuit limits the voltage range, then battery degradation is prevented, but additional power cannot be supplied during emergencies
Solution Approach 1:
The system dynamically adjusts its operation mode based on real-time conditions. The control unit monitors battery voltage and discharge current, and dynamically switches the bypass unit's state. During normal operation, the protection circuit maintains voltage within safe limits; during emergencies, the bypass unit activates to allow higher current draw temporarily.
Solution Approach 2:
The effective voltage and current parameters of the battery system are changed by activating the bypass path. When the switching element turns on, the system transitions from operating within the protection circuit's voltage limits to operating with expanded voltage and current capabilities, enabling emergency power supply.
3Reliability
If the protection circuit disconnects the battery during overdischarge, then battery damage is prevented, but the load loses power during emergency situations
Solution Approach 1:
The bypass unit is pre-configured and ready to activate before the battery reaches critical discharge levels. When the control unit detects an emergency condition, it immediately activates the bypass path, allowing the system to continue operating without interruption even as the battery voltage approaches the protection circuit's disconnect threshold.
Solution Approach 2:
The bypass unit ensures continuous power supply to the load by creating an alternative current path. This maintains the continuity of useful action (power delivery to load) even when the battery voltage would normally trigger the protection circuit to disconnect, allowing emergency operations to continue uninterrupted.
Data Source
AI summary
An apparatus for supplying emergency power according to an embodiment of the present disclosure includes: a protection circuit unit connected to a battery and configured to limit an available voltage range of the battery; a bypass unit connected in parallel to the protection circuit unit and configured to form a bypass path of a current output from the battery according to an operation state of a disposed switching element; and a control unit configured to electrically connect the bypass path formed by the bypass unit by controlling the operation state of the switching element to a turn-on state.