Battery Pack Terminal Layout for Low-Power Control and Noise Isolation
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Solution Overview
Problem
Existing battery packs face issues with noise interference and limited information exchange between device and battery pack controllers due to shared power terminals, and require separate low-power sources that do not cause cell imbalance or add non-replaceable components.
Innovation Solution
A battery pack design with separate communication terminals isolated from power terminals and a low-power circuit providing a low-power voltage supply, using a transformer or low dropout regulator to power device controllers without causing cell imbalance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power terminals are used for both power transmission and communication between controllers, then the number of terminals is reduced, but noise interference increases and communication quality deteriorates
Solution Approach 1:
The terminal structure is segmented into distinct power terminals and communication terminals. Power terminals handle high-current power transmission while communication terminals handle low-voltage data exchange between controllers. This functional segmentation eliminates noise interference from power lines affecting communication signals.
Solution Approach 2:
The communication function is extracted from the power transmission function. Separate communication terminals are provided specifically for controller-to-controller data exchange, removing the harmful effect of power-related noise from the communication path while maintaining dedicated power terminals for energy transmission.
2Duration of action of stationary object
If a separate dedicated battery is used to power low-power functions, then continuous operation is ensured, but additional non-chargeable or non-replaceable components are added
Solution Approach 1:
The existing rechargeable battery pack is made multi-functional by adding a low-power output terminal that can supply both high-power and low-power modes. The same battery pack serves both main power delivery and low-power standby functions, eliminating the need for separate dedicated batteries while maintaining continuous operation capability.
Solution Approach 2:
The low-power power source function is merged into the existing rechargeable battery pack through a low-power output terminal. This combines multiple functions (main power delivery, low-power standby, charging) into a single integrated battery pack system, reducing component count while ensuring continuous operation.
3Device complexity
If a single battery cell is used to power low-power functions, then component count is reduced, but cell balancing issues arise and service life is reduced
Solution Approach 1:
The rechargeable battery pack with multiple cells is made multi-functional by providing a low-power output terminal that draws from the entire battery pack in a balanced manner. This allows the same multi-cell battery system to serve both high-power and low-power functions simultaneously without creating cell imbalance, as the battery management system maintains balanced charging and discharging across all cells.
4Power
If full voltage is provided to power the electrical device immediately, then power delivery is maximized, but the device controller cannot be properly activated due to low power capacity
Solution Approach 1:
The low-power output terminal provides preliminary power to activate the device controller before full power delivery begins. The controller can be properly initialized and brought online using the regulated low-voltage output, ensuring reliable operation before the higher-power functions are activated.
Solution Approach 2:
The battery pack output parameters are changed by providing different voltage levels through different terminals. The low-power output terminal provides regulated low voltage suitable for controller operation, while the main power terminals provide full voltage for high-power device operation, allowing proper controller activation followed by full power delivery.
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
This design reduces noise interference and enables efficient, low-power communication and operation of device controllers, maintaining battery pack performance and extending service life.
Implementation Method 1
using a transformer or low dropout regulator to power device controllers
Data Source
AI summary
A battery pack, an electrical combination and a method of operating a battery pack. The battery pack may include a housing; a plurality of battery cells supported by the housing; a plurality of terminals including a positive power terminal, a negative power terminal, and a low power terminal; a low power circuit connecting the plurality of battery cells to the low power terminal and the negative terminal to output a first voltage; and a power circuit connecting the plurality of battery cells to the positive power terminal and the negative terminal to output a second voltage, the second voltage being greater than the first voltage. A terminal block for one of a battery pack and an electrical device may include a terminal with a terminal blade, and a terminal support portion.