Electromagnetic Battery Pack Locking for Compact EV Quick Exchange
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Solution Overview
Problem
Existing lock mechanisms for battery packs in electric vehicles occupy excessive space and lack protection, leading to potential failure and loose or fallen battery packs.
Innovation Solution
A lock mechanism with a lock assembly that includes a lock pin and a power pin controlled by electromagnetic induction, allowing for compact design and reliable locking through magnetic attraction and elastic elements, reducing the need for additional space and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a primary lock mechanism with lock base and lock bolt is used, then the locking function is achieved, but the space occupied in the lock base is large
Solution Approach 1:
The lock mechanism is divided into separate functional modules: a lock base and a lock assembly that can be independently configured. The lock assembly contains the lock pin and power pin, separating these components from the lock base structure, thereby reducing the space required in the lock base while maintaining the complete locking function.
Solution Approach 2:
The lock assembly is designed to extend into the cavity from the side of the lock base opposite to the lock shaft, utilizing three-dimensional space more efficiently. This spatial arrangement allows the locking components to be positioned in a different dimension relative to the lock base, reducing the footprint within the lock base itself.
2Device complexity
If the lock shaft enters the cavity through the opening, then the locking structure is simple, but the primary lock mechanism lacks protection and is susceptible to failure
Solution Approach 1:
The lock assembly is pre-positioned to extend into the cavity and prevent the lock shaft from exiting before the locking operation is complete. This preliminary positioning of the lock pin creates a protective barrier that safeguards the lock shaft and primary lock mechanism during the locking process, preventing premature failure or loosening.
Solution Approach 2:
The elastic element is pre-loaded to provide a cushioning force on the lock pin, creating a protective buffer that absorbs shocks and prevents failure of the lock shaft. This beforehand cushioning ensures that the primary lock mechanism is protected against sudden loads or misalignment during operation.
3Manufacturing precision
If electromagnetic induction elements are used to control the lock pin, then the locking control is precise, but the device complexity increases
Solution Approach 1:
The mechanical system for controlling the lock pin is replaced with an electromagnetic induction system. The first electromagnetic induction element on the power pin interacts with an external electromagnetic device to precisely control the extension and retraction of the lock pin, eliminating the need for complex mechanical linkages, springs, or manual actuators while achieving precise locking control.
Solution Approach 2:
The power pin serves multiple functions: it transmits electromagnetic force from the first electromagnetic induction element to control the lock pin, and it can move relative to the lock pin to engage with or detach from it. This multi-functionality reduces the need for separate control mechanisms, thereby reducing device complexity while maintaining precise control.
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 provides a compact and reliable locking system that minimizes space requirements and prevents battery pack loosening or falling, ensuring secure battery pack installation and easy exchange.
Implementation Method 1
a first electromagnetic induction element, the first electromagnetic induction element is provided on the power pin, the first electromagnetic induction element is used for driving the power pin to apply an acting force to the lock pin in a retracting direction of the lock pin under the action of an external electromagnetic device
Data Source
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AI summary
Provided is a lock mechanism, wherein the lock mechanism includes a lock base, the lock base is provided with an opening and a cavity extending from the opening, the opening is used for the lock shaft mounted to the battery pack to enter the cavity, the lock mechanism further includes: a lock assembly, the lock assembly is connected to one side of the lock base opposite the lock shaft, the lock assembly is moveable relative to the lock base, and the side of the lock base opposite the lock shaft extends into the cavity or exits the cavity; wherein, the lock assembly is capable of preventing the lock shaft from exiting the cavity from the opening when the lock assembly extends into the cavity; the lock assembly is capable of allowing the lock shaft to exit the cavity from the opening when the lock assembly exits the cavity. The lock mechanism is capable of preventing the install and lock of the prior battery pack from being easily failed, which may cause the battery pack to loose or fall off, so that the lock reliability of the battery pack is improved. Provided are also a lock system comprising the above lock mechanism, a quick exchange bracket assembly and an electronic vehicle.