Battery Locking Device Linkage Mechanism for Rapid Replacement

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Solution Overview

Problem

The existing battery replacement process in new energy vehicles is time-consuming and inconvenient, particularly for electric buses, due to the complexity of disassembling and reassembling batteries using bolt fixing devices, which delays both driver and passenger trips.

Innovation Solution

A battery locking device with a linkage mechanism that allows for rapid clamping or releasing of batteries, simplifying the replacement process by integrating the battery clamping device within the battery compartment, reducing the need for manual bolt operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bolt fixing devices are used to connect the battery to the battery compartment, then the battery can be securely fixed, but the battery replacement process becomes time-consuming and complicated

Engineering Contradiction:
Improvebattery fixation securityVSAvoidbattery replacement time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The battery fixing system is segmented into multiple independent clamping mechanisms (first clamping mechanism on the side frame, second clamping mechanism on the back plate) that can independently secure different portions of the battery. This segmentation allows the battery to be firmly fixed while enabling rapid replacement by independently actuating each clamping mechanism without the complexity of multiple bolts

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The traditional mechanical bolt-fixing system is replaced with a linkage-based clamping mechanism that uses mechanical advantage and coordinated motion. The linkage mechanism converts simple operational input into coordinated clamping actions across multiple points, providing secure fixation with significantly reduced operational complexity and time compared to manual bolt assembly/disassembly

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If multiple bolts are used to fix the battery, then the battery can be securely attached, but the disassembly and assembly process becomes extremely inconvenient and time-consuming

Engineering Contradiction:
Improvebattery attachment securityVSAvoidbattery replacement convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

Multiple clamping functions are merged into a unified linkage mechanism system. The first and second clamping mechanisms are interconnected through linkages, allowing a single operational input to simultaneously activate multiple clamping points. This merging provides secure battery attachment while dramatically improving ease of operation, as the operator needs to perform only one coordinated action rather than manually handling multiple bolts

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The linkage mechanism is designed to automatically coordinate the clamping actions across different mechanisms. When one clamping mechanism is actuated, the linkage system automatically triggers the corresponding actions in other clamping mechanisms, creating a self-coordinating system that reduces operational complexity and improves convenience without sacrificing attachment security

Inventive Principle:
Principle #25Self-service

3Reliability

If a complex bolt system is used for battery fixation, then the battery can be firmly secured, but the replacement operation becomes complicated and time-consuming

Engineering Contradiction:
Improvebattery securing firmnessVSAvoidbattery replacement efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The fixing system transitions from a static bolted connection to a dynamic linkage-based clamping system. The linkage mechanisms allow for rapid transition between locked and unlocked states, enabling the battery to be firmly secured during operation but quickly released when replacement is needed. This dynamic capability maintains securing firmness while dramatically improving replacement efficiency

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The clamping mechanisms are pre-positioned and pre-configured in the battery compartment structure (side frame and back plate), with the linkage system pre-set to coordinate their actions. This preliminary arrangement ensures that when replacement is needed, the mechanisms are already in optimal positions for rapid actuation, eliminating the need for complex assembly/disassembly procedures and improving replacement efficiency

Inventive Principle:
Principle #10Preliminary action

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 battery locking device significantly reduces the time required for battery replacement, making the process more efficient and convenient, especially for large vehicles like buses, by allowing for single-operation clamping or releasing of batteries.

Implementation Method 1

a battery clamping device provided on the battery compartment and controlled by a linkage mechanism such that the battery is clamped or released

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 2

the transmission rod is provided with a transmission gear, and the pressing plate linkage mechanisms include: rotatable screw rods provided on parts of the side frame that are located at the two sides of the battery inlet or on the bottom plate, each rotatable screw rod is provided with a screw rod gear engaged with a transmission gear at an end of the transmission rod

Methodology Applied
Scientific EffectGear transmission: Gear

Implementation Method 3

rotatable screw rods provided on parts of the side frame that are located at the two sides of the battery inlet or on the bottom plate, each rotatable screw rod is provided with a screw rod gear engaged with a transmission gear at an end of the transmission rod

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 4

sliding sleeves, each of which is sleeved on a corresponding screw rod through a threaded orifice and is sleeved on a corresponding sliding rod through a sliding rod-through hole simultaneously

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9257690B2Energy vehicle and battery locking device thereof
Publication Date: 2016.02.09 STATE GRID ZHEJIANG ELECTRIC POWER CO LTD HANGZHOU POWER SUPPLY CO
  • US9257690B2 patent drawing
  • US9257690B2 patent drawing
  • US9257690B2 patent drawing

AI summary

A battery locking device for a new energy vehicle including: a battery compartment fit for a battery, the battery compartment being provided with a battery inlet; and a battery clamping device provided on the battery compartment and controlled by a linkage mechanism. Since the battery clamping device is controlled by the linkage mechanism, during the mounting or removing of the battery, the battery can be integrally clamped or released by merely operating an operating end of the linkage mechanism. Compared with the prior art in which the battery is fixed through bolts, the battery can be integrally clamped or released by the battery locking device through a single operation, which greatly simplifies the disassembling or assembling process of the battery and reduces the time required for replacing the battery. A new energy vehicle provided with the above battery locking device has the same advantages.