EV Battery Locking Linkage for Fast Multi-Point Mounting
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Solution Overview
Problem
Existing locking structures for electric vehicle batteries are inefficient and lack automation, particularly in terms of speed and ease of assembly/disassembly due to their reliance on multiple locking positions for heavy batteries.
Innovation Solution
A locking device that uses a single lock connecting rod to simultaneously control multiple lock shafts, enabling automatic locking and unlocking of battery packs through a mechanism involving a lock tongue, stopping device, and elastic pads to reduce friction and collision, with sensing devices for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple locking positions are used to lock heavy batteries, then the reliability of battery fixation is improved, but the complexity of the locking structure and time consumption increase
Solution Approach 1:
The patent combines multiple locking positions (first locking position with lock shaft 30 and lock base 20, second locking position with lock shaft 30' and lock base 20') into a unified locking system controlled by a single lock connecting rod 10. This merging allows simultaneous control of multiple locking operations through one actuator, reducing operational complexity while maintaining reliable fixation of heavy batteries
2Reliability
If multiple locking positions are used to lock heavy batteries, then the reliability of battery fixation is improved, but the locking speed decreases
Solution Approach 1:
The lock connecting rod 10 merges the functionality of controlling multiple lock shafts (30, 30') and lock bases (20, 20') into a single mechanical linkage. When the lock connecting rod moves, it simultaneously actuates all locking positions, enabling parallel locking operations that maintain high speed while ensuring reliable fixation through multiple engagement points
Solution Approach 2:
The locking components (lock shafts 30, 30' and lock bases 20, 20') are pre-positioned and aligned before the actual locking action occurs. The lock connecting rod 10 then executes a single motion that simultaneously engages all pre-positioned locking points, eliminating sequential operation delays and maintaining high locking speed
3Device complexity
If manual operation is used for battery replacement, then the device complexity is reduced, but the productivity and automation level decrease
Solution Approach 1:
The locking device is designed with self-servicing characteristics where the lock connecting rod 10 automatically coordinates the locking and unlocking actions across multiple positions without requiring manual intervention at each locking point. The system serves itself by using a single control element to manage complex multi-point locking, thereby improving productivity while keeping the control interface simple
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
Enhances the efficiency of battery assembly and disassembly by allowing simultaneous locking/unlocking of multiple positions, reducing friction and collision damage, and providing clear motion state information for automated processes.
Implementation Method 1
determining whether the battery currently enters the lock groove by the first positioning steel magnet mounted on the shaft rod being sensed by the sensing device when passing through the lock shaft sensing hole
Implementation Method 2
enabling the stopping device to fall under the gravity of the lock connecting rod and laterally block a return path of the shaft rod
Data Source
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AI summary
A locking method and an unlocking method are provided. The locking method is used to mount a battery to a fixing seat of an electric vehicle by a locking device. The locking device includes: a lock base (20) including a lock body (25), a surface of the lock body (25) being provided with a lock groove (21) recessed towards the interior of the lock body (25), the lock body (25) being internally provided with a lock tongue groove (22) and a lock tongue (24) movably mounted in the lock tongue groove (22), and the lock tongue groove (22) being in communication with the lock groove (21); and a lock shaft (30) including a shaft rod (31) configured to be inserted into the lock groove (21) of the lock base (20) to perform unlocking and locking.