CN216526199U

CN216526199U - Special test tool for testing 21700 battery

Info

Publication number: CN216526199U
Application number: CN202122257175.9U
Authority: CN
Inventors: 孙东明; 李岚玉; 宋长光; 卢泽; 张赛; 李海峰; 苗慧英; 曹鹏飞
Original assignee: Beijing Dahuapne Technology Co ltd
Current assignee: Beijing Dahuapne Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-05-13
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a special test tool for testing a 21700 battery, which comprises a clamp mounting bottom plate, wherein a lower probe fixing substrate, a battery limiting seat and a quick clamping assembly are fixed on the clamp mounting bottom plate, an upper probe mounting fixing block is arranged on the quick clamping assembly, a lower probe is arranged on the lower probe fixing substrate, and an upper probe is arranged on the upper probe mounting fixing block. The rapid clamping assembly comprises a clamp fixing bottom plate fixed on the clamp mounting bottom plate, a rapid clamp is hinged on the clamp fixing bottom plate and connected with the upper probe mounting fixing block through a positioning shaft. The 21700 battery to be tested is placed on the battery limiting seat, the lower end of the 21700 battery to be tested is fixedly contacted with the lower probe, and the upper probe is tightly pressed on the upper end of the 21700 battery to be tested. Convenient operation, simple structure, elegant appearance and convenient maintenance. Meanwhile, the space is saved, the size is small, the weight is light, and the movement is convenient.

Description

Special test tool for testing 21700 battery

Technical Field

The utility model relates to a battery charge-discharge testing technology, in particular to a special testing tool for testing a 21700 battery.

Background

Currently, 18650 batteries widely used have a history for many years, and are mature compared with other types of battery technologies, but still face the problems of high heat generation, complex grouping, incapability of realizing quick charge and the like.

In such a technical background, 21700 cylindrical ternary batteries are produced, which are the batteries with the highest energy density and the lowest cost among the currently available mass-producible batteries.

21700 the battery is a model of a cylindrical battery, specifically: the outer diameter of the cylindrical battery was 21mm, and the height of the battery was 70.0 mm. The battery is a new model developed for improving the effective space utilization rate of the battery due to the requirement of an electric automobile on longer continuous mileage, and the capacity of the same material 21700 battery can be more than 35% higher than that of a common 18650 cylindrical lithium battery.

In view of the above, the present invention is particularly proposed to meet the requirement of 21700 battery capable of being charged and discharged quickly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special test tool for testing a 21700 battery, so as to solve the technical problems in the prior art.

The purpose of the utility model is realized by the following technical scheme:

the special test tool for testing the 21700 battery comprises a clamp mounting base plate, wherein a lower probe fixing base plate, a battery limiting seat and a quick clamping assembly are fixed on the clamp mounting base plate, an upper probe mounting fixing block is arranged on the quick clamping assembly, a lower probe is arranged on the lower probe fixing base plate, and an upper probe is arranged on the upper probe mounting fixing block.

Compared with the prior art, the special test tool for testing the 21700 battery is simple and convenient to install, beneficial to maintenance and attractive and elegant in appearance. The current of 50A can be carried out, and the test time of aged batteries of 21700 battery manufacturers is greatly saved.

Drawings

FIG. 1 is a schematic front view of a dedicated test fixture for testing 21700 batteries according to an embodiment of the present invention;

fig. 2 is a schematic side view of a dedicated test fixture for testing 21700 cells according to an embodiment of the present invention.

In the figure:

Detailed Description

The technical scheme in the embodiment of the utility model is clearly and completely described below by combining the attached drawings in the embodiment of the utility model; it is to be understood that the described embodiments are merely exemplary of the utility model, and are not intended to limit the utility model to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The terms that may be used herein are first described as follows:

the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".

The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.

The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.

Details which are not described in detail in the embodiments of the utility model belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.

The rapid clamping assembly comprises a clamp fixing bottom plate fixed on the clamp mounting bottom plate, a rapid clamp is hinged to the clamp fixing bottom plate and connected with the upper probe mounting fixing block through a positioning shaft.

And a clamp movement limiting plate is arranged on the clamp fixing bottom plate.

The 21700 battery to be tested is placed on the battery limiting seat, the lower end of the 21700 battery to be tested is fixedly contacted with the lower probe, and the upper probe is tightly pressed on the upper end of the 21700 battery to be tested.

In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.

Example 1

As shown in fig. 1 and 2:

the purpose is as follows: the 21700 battery discharge quick connection test is realized, the operation is convenient, and the safety and the reliability are realized.

The design idea is as follows: according to the design requirements proposed by a client, the 21700 battery single battery is tested, the 21700 battery test battery is placed on the battery limiting seat 5, and one limiting seat can be used for placing one battery. The limiting seat has the advantages that the center of the battery is better in butt joint with the test probe 4, the clamp is made of green epoxy resin and thermosetting plastic with high hardness and high insulating property, the appearance is attractive and elegant, and meanwhile, good fatigue resistance and good interchangeability are guaranteed.

The specific scheme is as follows:

through quick binding clasp 1 through the probe installation fixed block 8 drive test probe 4 and lift up the probe or push down the probe, rationally adjust test pressure according to probe test data to guarantee in test range, can carry out the charge-discharge test to it.

The movement process of clamping or loosening the upper part is that the clamping device 1 drives the positioning shaft 9 to drive the upper probe mounting fixing block 8 to slide, so that the probe can slide up and down.

The lower part is a fixed lower probe fixing substrate 6 on which the probes are mounted, the substrate being fixed to a fixture, here the fixed end of the battery.

The unique probe structural design of the test fixture enables the functions to be more concentrated. Unique structural design for the binding clasp slides more smoothly, and convenient operation more, the debugging process is more convenient. The assembly time is saved, and the production cost is greatly reduced.

In a specific embodiment, the external dimensions of the test fixture are as follows: the width is 120mm, the height is 335mm, and the depth is 105.5 mm; the clamp material is epoxy resin green non-conducting and has good insulating property. The upper part is a quick clamp 1 with a 16mm travel to ensure that the test probe 4 is lifted upwards to remove the 21700 battery 11. The lower part is a fixed end of a test probe 4, the negative electrode of the battery is firstly contacted with the lower probe during testing and is placed on a battery limiting seat 5, after the battery is placed, the clamp 1 is rapidly clamped, and the battery is subjected to power-on aging test at the moment.

In conclusion, the test fixture provided by the embodiment of the utility model is convenient to operate. Simple structure, elegant appearance and convenient maintenance. Meanwhile, the device saves space, has small volume and light weight, and is convenient to move.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims

1. The special test tool for testing the 21700 battery is characterized by comprising a clamp mounting base plate, wherein a lower probe fixing base plate, a battery limiting seat and a quick clamping assembly are fixed on the clamp mounting base plate, an upper probe mounting fixing block is mounted on the quick clamping assembly, a lower probe is mounted on the lower probe fixing base plate, and an upper probe is mounted on the upper probe mounting fixing block.

2. The special test fixture for testing 21700 batteries according to claim 1, wherein the quick clamping assembly comprises a clamper fixing base plate fixed on the clamper mounting base plate, a quick clamper is hinged on the clamper fixing base plate, and the quick clamper is connected with the upper probe mounting fixing block through a positioning shaft.

3. The special test fixture for testing 21700 batteries according to claim 2, wherein the clamper moving limiting plate is installed on the clamper fixing base plate.