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Battery pack bottom anti-collision capability evaluation test method

A test method and battery pack technology, applied in the testing of machines/structural components, components of electrical measuring instruments, measuring electricity, etc., can solve problems such as missing

Pending Publication Date: 2022-04-26
CHINA AUTOMOTIVE ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current collision test method for the bottom of the vehicle or battery pack in the Z direction is lacking. In order to verify whether the anti-collision ability of the battery bottom meets the design requirements, it is necessary to study the bottom impact method of the battery.

Method used

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  • Battery pack bottom anti-collision capability evaluation test method
  • Battery pack bottom anti-collision capability evaluation test method
  • Battery pack bottom anti-collision capability evaluation test method

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Embodiment Construction

[0028] The following is further described in detail through specific implementation methods:

[0029] The reference signs in the drawings of the specification include: battery pack 1, punch 2, collision device 3, lifting platform 4, ground 5, limit plate 6, slide bar 7, acceleration sensor 8, buffer 9, slide block 10. Housing 11 , anti-backlash elastic block 12 , driven gear 13 , driving gear 14 , torsion spring 15 , rotating shaft 16 , and fixing piece 17 .

[0030] The embodiment is basically as attached Figure 1-Figure 4 Shown: a test method for evaluating the impact resistance of the bottom of the battery pack, including the following steps:

[0031] A. Pretreatment of battery pack 1: measure the voltage and insulation resistance of battery pack 1, the insulation resistance value is ≥100Ω / V, adjust the SOC state of the battery through the charging device; the state of charge of battery pack 1 is in the range of 0%-100% internal adjustment.

[0032] B. Test sample prepa...

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Abstract

The invention relates to the field of battery pack test, in particular to a battery pack bottom anti-collision capability evaluation test method, which comprises the following steps: A, battery pack pretreatment: measuring the voltage and insulation resistance value of a battery pack; b, preparing a test sample: fixing the battery pack on a lifting rack, determining the position of a collision weak point at the bottom of the battery pack, marking the bottom of the battery pack, and randomly selecting the collision point if no obvious weak point exists; c, collision equipment is prepared, specifically, the punch is connected with the collision equipment; d, bottom collision test: adjusting the position of a punch, driving the punch to move upwards by a driving cylinder after the test is started, and enabling the punch to collide with the bottom of the battery pack; e, standing and observing: standing the collided battery pack for more than 120 minutes, and observing whether phenomena such as smoking and fire occur or not; and F, performing safety check after the test: measuring the voltage and the insulation resistance of the battery pack, and performing a sealing performance test. According to the scheme, whether the battery pack bottom protection structure design meets design requirements can be verified.

Description

technical field [0001] The invention relates to the field of battery pack testing, in particular to a test method for evaluating the anti-collision capability of the bottom of the battery pack. Background technique [0002] The power battery is the core component of an electric vehicle, and its safety is directly related to the safety of the entire vehicle. Failure of the power battery may lead to thermal runaway or even a fire accident. The battery pack of an electric vehicle is usually installed and arranged at the bottom of the vehicle. During actual use, when the wheels pass over pits, bumps or stone roads, the bottom of the battery pack is extremely vulnerable to impact and scratches. If the structural strength Insufficiency can easily lead to potential safety hazards. The test and evaluation methods for the mechanical reliability of battery packs mainly include vibration, mechanical shock, simulated collision and extrusion. Among them, the extrusion test and simulate...

Claims

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Application Information

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IPC IPC(8): G01R31/385G01R1/02G01R1/04G01M7/08
CPCG01R31/385G01R1/02G01R1/0408G01M7/08
Inventor 赵志伟张亚明居浩谈江林张大志
Owner CHINA AUTOMOTIVE ENG RES INST
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