CN218158264U

CN218158264U - Multifunctional battery short circuit testing tool

Info

Publication number: CN218158264U
Application number: CN202221442212.1U
Authority: CN
Inventors: 刘仲文; 赵广
Original assignee: Tianpeng Lithium Energy Technology Huai'an Co ltd
Current assignee: Tianpeng Lithium Energy Technology Huai'an Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-12-27
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a multi-functional battery short circuit test frock, including insulating bottom plate board, be provided with first fixed metal piece and the fixed metal piece of second relatively on the insulating bottom plate board, sliding bolt and fixing bolt wear to be equipped with on the fixed metal piece of first fixed metal piece and second respectively the level, sliding bolt and fixing bolt are located same straight line and the bottom sets up inwards, the sliding bolt bottom is provided with the backstop board, the cover is equipped with the spring on the sliding bolt, the spring is located between first fixed metal piece and the backstop board, be provided with the insulating recess board that is used for placing sample electricity core on the insulating bottom plate board, insulating recess board is located between first fixed metal piece and the fixed metal piece of second, be connected with first external connection on sliding bolt and the fixing bolt respectively. The utility model provides a pair of multi-functional battery short circuit test fixture, the contact internal resistance uniformity is good, and the test result is stable, need not to draw utmost point ear with electric core welding simultaneously, and the testing process is convenient.

Description

Multifunctional battery short circuit testing tool

Technical Field

The utility model relates to a multi-functional battery short circuit test frock belongs to battery safety test technical field.

Background

As an important means for evaluating the safety performance of a battery, a short circuit test evaluation is required in various safety evaluations, for example, a short circuit test of < 5mohm is required in the GB38031 (safety requirement for power storage batteries for electric vehicles) standard of a power battery, a short circuit test (80 ± 20m Ω) requirement is also required in a consumer battery GB31241 (safety requirement for lithium ion batteries and battery packs for portable electronic products), and a related short circuit test requirement is required in a foreign common safety certification evaluation (for example, UL1642, CB, and the like). With the increasing requirements on the short-circuit safety performance of lithium ion battery products, the short-circuit test is becoming a means for evaluating the safety and reliability of the battery.

The short circuit test has certain standard requirement to test return circuit internal resistance, and among the prior art, the crocodile clip is mainly used on the short circuit test frock usually, and this kind of condition has following technical problem: 1. the pressure of different crocodile clamps is different, and the tightness degree of the clamp wire has a certain relation with the thickness and hardness of the clamped battery wire, so that the consistency of contact internal resistance is poor; 2. in the short circuit test process, if the safety blowout of the battery cell fails, the crocodile clip is easy to burn out and needs to be replaced repeatedly; 3. in the testing process, the electric core is required to be welded to lead out a tab, so that the crocodile clip is connected into the circuit.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is, overcome prior art's defect, provide a multi-functional battery short circuit test frock, the contact internal resistance uniformity is good, and the test result is stable, need not to draw utmost point ear with electric core welding simultaneously, and the test procedure is convenient.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides a multi-functional battery short circuit test frock, includes insulating backing plate, be provided with first fixed metal piece and the fixed metal piece of second relatively on the insulating backing plate, slide bolt and fixing bolt are worn to be equipped with to the level respectively on first fixed metal piece and the fixed metal piece of second, slide bolt and fixing bolt are located same straight line and the bottom sets up inwards, the slide bolt bottom is provided with the backstop board, the cover is equipped with the spring on the slide bolt, the spring is located first fixed metal piece with between the backstop board, be provided with the insulating recess board that is used for placing sample electricity core on the insulating backing plate, insulating recess board is located first fixed metal piece with between the fixed metal piece of second, be connected with first external connection on slide bolt and the fixing bolt respectively.

The insulation bottom support plate is characterized in that the inner sides of the first fixed metal blocks and the second fixed metal blocks are respectively provided with a first sliding metal block and a second sliding metal block in a sliding mode, the first fixed metal blocks are connected with the first sliding metal blocks and the second fixed metal blocks are connected with the second sliding metal blocks through adjusting bolts, the first fixed metal blocks and the second fixed metal blocks are fixed on the insulation bottom support plate through first connecting bolts and second connecting bolts respectively, and second external connecting wires are connected to the first connecting bolts and the second connecting bolts respectively.

Bolt holes are formed in four corners of the insulating bottom supporting plate, and fastening bolts penetrate through the bolt holes to fix the bottom supporting plate on testing equipment.

The first fixed metal block and the second fixed metal block are L-shaped, the first sliding metal block and the second sliding metal block are L-shaped, and the first sliding metal block and the second sliding metal block are respectively embedded into the first fixed metal block and the second fixed metal block.

The insulating bottom supporting plate and the insulating groove plate are made of bakelite.

The first fixed metal block, the second fixed metal block, the first sliding metal block, the second sliding metal block, the sliding bolt and the fixing bolt are made of copper.

The first connecting bolt, the adjusting bolt and the second connecting bolt are made of stainless steel.

The utility model has the advantages that: the utility model provides a multi-functional battery short circuit test frock, sample electricity core both ends are located between sliding bolt and the fixing bolt, realize the short circuit loop and establish ties, carry out the short circuit test, the contact area of bolt thimble and sample electricity core is big, is favorable to reducing the contact internal resistance, guarantees the short circuit test stability, selects independent spring to extrude sliding bolt simultaneously, compares in the alligator clip spring action effectual, can guarantee the test result uniformity; the inboard of the fixed metal block of first fixed metal piece and second slides respectively and is provided with first slip metal block and the slip metal block of second, can be used for the utmost point ear of fixed sample electricity core between fixed metal block and the slip metal block, constitutes another kind of short circuit test return circuit, the utility model discloses realize that two kinds of short circuit test return circuits accomplish the integration, can realize the parallelly connected short circuit function of two batteries simultaneously, possess stronger practicality.

Drawings

Fig. 1 is the utility model relates to a structural schematic of multi-functional battery short circuit test frock.

The reference numbers in the figures are as follows: 1-an insulating bottom plate; 2-a first fixed metal block; 3-insulating groove plates; 4-a first connecting bolt; 5-a sliding bolt; 6-fixing the bolt; 7-a stopper plate; 8-a spring; 9-a first sliding metal block; 10-adjusting the bolt; 11-bolt holes; 12-a first external connection; 13-a second external connection; 14-a second fixed metal block; 15-a second sliding metal block; 16-second connecting bolt.

Detailed Description

The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the utility model provides a multi-functional battery short circuit test fixture, including insulating bottom plate 1, bolt hole 11 has been seted up to the four corners department of insulating bottom plate 1, and fastening bolt passes and fixes bottom plate 1 on test equipment after the bolt hole. The insulating bottom plate 1 is relatively provided with a first fixed metal block 2 and a second fixed metal block 14, the first fixed metal block 2 and the second fixed metal block 14 are respectively horizontally provided with a sliding bolt 5 and a fixing bolt 6, the sliding bolt 5 can horizontally slide, and the fixing bolt 6 is fixedly connected with the second fixed metal block 14.

Slide bolt 5 and fixing bolt 6 are located same straight line and the bottom sets up inwards, and slide bolt 5 bottom is provided with backstop board 7, and the cover is equipped with spring 8 on the slide bolt 5, and spring 8 is located between first fixed metal block 2 and the backstop board 7. An insulating groove plate 3 for placing a sample cell is arranged on the insulating bottom supporting plate 1, and the insulating groove plate 3 is positioned between the first fixed metal block 2 and the second fixed metal block 14. Under the normal condition, spring 8 is in the extension state, and when putting into insulating recess board 3 when sample electricity core, sample electricity core both ends respectively with

backstop

7 and 6 end connection of fixing bolt, spring 8 was compressed this moment, and under the effect of spring 8 elasticity, sample electricity core both ends were pressed from both sides tightly. The sliding bolt 5 and the fixing bolt 6 are respectively connected with a first external connecting wire 12 for connecting with an external short circuit. Wherein, the insulating bottom supporting plate 1 and the insulating groove plate 3 are made of bakelite.

Additionally, the utility model provides an other short circuit test return circuit, to the electric core behind the positive negative pole both ends welding utmost point ear, concrete structure is as follows, the inboard that lies in first fixed metal block 2 and the fixed metal block 14 of second on the insulating backing plate 1 slides respectively and is provided with first slip metal block 9 and second slip metal block 15, the interval is connected through adjusting bolt 10 between first fixed metal block 2 and the first slip metal block 9 and the interval between the fixed metal block 14 of second and the second slip metal block 15, first fixed metal block 2 and the fixed metal block 14 of second are fixed on insulating backing plate 1 through first connecting bolt 4 and second connecting bolt 16 respectively, be connected with second external connection 13 on first connecting bolt 4 and the second connecting bolt 16 respectively.

The first fixed metal block 2 and the second fixed metal block 14 are L-shaped, the first sliding metal block 9 and the second sliding metal block 15 are L-shaped, and the first sliding metal block 9 and the second sliding metal block 15 are respectively embedded into the first fixed metal block 2 and the second fixed metal block 14, so that stable and aligned loop connection is facilitated, and contact consistency is kept. After welding the positive negative pole both ends of electric core, can shelve the utmost point ear wire between two big L pieces of left and right sides, through adjusting bolt 10, can tightly fix utmost point ear between big L piece.

The utility model discloses in, the material of first fixed metal block 2, the fixed metal block 14 of second, first slip metal block 9, the slip metal block 15 of second, sliding bolt 5 and fixing bolt 6 is copper, improves the electrically conductive effect in return circuit. The first connecting bolt 4, the adjusting bolt 10 and the second connecting bolt 16 are made of stainless steel.

The utility model provides a multi-functional battery short circuit test fixture provides both test circuit altogether, is the sample electricity core that does not take utmost point ear and takes the sample electricity core of utmost point ear respectively, and the integration is done in two kinds of short circuit test circuit simultaneously, and is simple, can realize the parallelly connected short circuit function of two batteries simultaneously.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a multi-functional battery short circuit test fixture which characterized in that: including insulating bottom plate board (1), be provided with first fixed metal block (2) and second fixed metal block (14) on insulating bottom plate board (1) relatively, slide bolt (5) and fixing bolt (6) are worn to be equipped with respectively horizontally on first fixed metal block (2) and second fixed metal block (14), slide bolt (5) and fixing bolt (6) are located same straight line and the bottom sets up inwards, slide bolt (5) bottom is provided with backstop board (7), the cover is equipped with spring (8) on slide bolt (5), spring (8) are located first fixed metal block (2) with between backstop board (7), be provided with insulating recess board (3) that are used for placing sample electricity core on insulating bottom plate board (1), insulating recess board (3) are located first fixed metal block (2) with between second fixed metal block (14), be connected with first external tapping (12) on slide bolt (5) and fixing bolt (6) respectively.

2. The multifunctional battery short circuit test tool according to claim 1, characterized in that: the insulation bottom supporting plate is characterized in that the inner sides of a first fixed metal block (2) and a second fixed metal block (14) on the insulation bottom supporting plate (1) are provided with a first sliding metal block (9) and a second sliding metal block (15) in a sliding mode respectively, the first fixed metal block (2) is connected with the first sliding metal block (9) at intervals, the second fixed metal block (14) is connected with the second sliding metal block (15) at intervals through adjusting bolts (10), the first fixed metal block (2) is fixed with the second fixed metal block (14) through first connecting bolts (4) and second connecting bolts (16) respectively on the insulation bottom supporting plate (1), and second external connecting wires (13) are connected on the first connecting bolts (4) and the second connecting bolts (16) respectively.

3. The multifunctional battery short circuit test tool according to claim 1, characterized in that: bolt holes (11) are formed in four corners of the insulating bottom supporting plate (1), and fastening bolts penetrate through the bolt holes (11) to fix the bottom supporting plate (1) on testing equipment.

4. The multifunctional battery short circuit test tool according to claim 2, characterized in that: the first fixed metal block (2) and the second fixed metal block (14) are L-shaped, the first sliding metal block (9) and the second sliding metal block (15) are L-shaped, and the first sliding metal block (9) and the second sliding metal block (15) are embedded into the first fixed metal block (2) and the second fixed metal block (14) respectively.

5. The multifunctional battery short circuit test tool according to claim 1, characterized in that: the insulating bottom supporting plate (1) and the insulating groove plate (3) are made of bakelite materials.

6. The multifunctional battery short circuit test tool according to claim 2, characterized in that: the first fixed metal block (2), the second fixed metal block (14), the first sliding metal block (9), the second sliding metal block (15), the sliding bolt (5) and the fixing bolt (6) are made of copper.

7. The multifunctional battery short circuit test tool according to claim 2, characterized in that: the first connecting bolt (4), the adjusting bolt (10) and the second connecting bolt (16) are made of stainless steel.