Detachable Battery Pack Control for Expandable Energy Storage
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Solution Overview
Problem
Existing energy storage devices are limited by the power capacity of their built-in batteries, leading to insufficient electricity supply when demand exceeds the device's maximum power, affecting consumer experience and requiring additional power sources for capacity expansion.
Innovation Solution
An energy storage device with a detachable battery pack that can be connected to a built-in battery, allowing for capacity expansion and selective charging methods, including simultaneous power supply and charging from an external source, and a low-voltage protection mechanism to ensure continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the energy storage device uses a built-in battery with fixed power capacity, then the device structure is simple and reliable, but the device cannot meet higher electricity demands when power capacity is insufficient
Solution Approach 1:
The energy storage system is divided into two independent parts: a built-in battery with fixed power capacity and a detachable battery pack with expandable capacity. This segmentation allows the system to maintain simplicity while enabling power expansion by connecting additional battery packs when higher electricity demands are required.
2Adaptability or versatility
If the energy storage device is designed for fixed power output, then manufacturing and operation are simple, but the device cannot adapt to varying electricity demands
Solution Approach 1:
The system transitions from a static fixed-power design to a dynamic adaptable design by introducing detachable battery packs that can be connected or disconnected based on electricity demand. The control unit dynamically adjusts charging and discharging operations according to the connection status of battery packs, enabling the device to adapt to varying power requirements while maintaining simple operation through automated control.
3Loss of time
If the built-in battery is charged first during charging operation, then the battery pack can be used immediately after charging, but the built-in battery charging is delayed
Solution Approach 1:
The control unit prioritizes charging the battery pack first when both the built-in battery and battery pack are connected to the power transmitter. This preliminary action ensures that the battery pack, which can be quickly detached and used, is charged and ready for immediate use, while the built-in battery charging is delayed but still ensured to maintain sufficient energy supply reliability.
4Duration of action of moving object
If the energy storage device operates with limited built-in battery capacity, then the device is compact and portable, but the discharge time is limited
Solution Approach 1:
The detachable battery pack is designed to connect to the built-in battery, creating a nested configuration where the battery pack extends the discharge capacity of the compact built-in battery. This nesting approach allows the system to maintain a compact portable form factor while significantly increasing the total discharge time by utilizing both the built-in battery and the external battery pack in sequence or parallel.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables the energy storage device to meet higher electricity demands, ensure timely charging of the battery pack, and prolong discharge time by using the battery pack after the built-in battery is discharged, ensuring continuous power supply in emergency situations.
Implementation Method 1
a power transmitter, and a housing, wherein the power transmitter is configured to be connected to an external power supply to obtain electrical power for the energy storage device, the built-in battery is circuit-connected to the power transmitter to be charged and discharged through the power transmitter, and the power transmitter is configured to be connected to a load to supply electrical power to the load
Implementation Method 2
the battery pack is charged by electrical power from the energy storage power supply
Implementation Method 3
the built-in battery and the battery pack are connected in a capacity-combined manner to supply electrical power to the load connected to the energy storage device
Data Source
AI summary
The present disclosure describes an energy storage device and its associated charging/discharging control system. This energy storage device comprises an energy storage power supply and a detachably connected battery pack. The energy storage power supply features a housing with a mounting part that includes an interface, a built-in battery, and an inverter, all arranged to avoid interference with the mounting part. User-accessible input and output interfaces are also present on the housing. The battery pack connects freely to the mounting part and includes a power output port designed for mechanical and electrical connection to the interface. The battery pack has two operational states: in the first state, it charges using power from the energy storage supply via the connection; in the second state, it couples with the inverter to output alternating current through the output interface.