CN220473576U

CN220473576U - DCR test fixture of aluminum shell cell

Info

Publication number: CN220473576U
Application number: CN202321804503.5U
Authority: CN
Inventors: 胡冉; 丁鹏; 孙光忠; 刘晓群
Original assignee: Camel Group New Energy Battery Co Ltd
Current assignee: Camel Group New Energy Battery Co Ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-02-09
Anticipated expiration: 2033-07-11

Abstract

The utility model relates to the technical field of battery module manufacturing and discloses a DCR test fixture for an aluminum shell battery cell, which comprises a bottom plate, wherein a cavity for placing the battery cell is arranged on the bottom plate, a cylinder is further arranged on the bottom plate, the piston end of the cylinder is connected with a bracket, one side of the bracket, which is far away from the cylinder, is provided with a probe seat, the probe seat is arranged on the left side and the right side of the bracket, a probe is arranged on the probe seat, a manual control valve is further arranged on the bottom plate, and the manual control valve is electrically connected with the cylinder. The fixture can simply, practically and rapidly test DCR of the aluminum shell battery cell with low cost.

Description

DCR test fixture of aluminum shell cell

Technical Field

The utility model relates to the technical field of battery module manufacturing, in particular to a DCR test fixture for an aluminum shell cell.

Background

In recent years, the new energy automobile industry in China rapidly develops, and the use of the new energy automobiles is more and more popular. The power battery module is used as one of the core components of the new energy automobile, the production process of the power battery module has very high requirements, and particularly the quality and the safety of the battery module are required to be ensured.

In the prior art, after the manufacturing of the battery cell is completed, a direct current impedance test, namely a DCR test, is required to pass 110A of current through positive and negative poles of the battery cell during the test, and in the current test, the positive and negative poles of the battery cell need to be welded firstly, and an aluminum row which can be connected with a test cabinet is welded, so that the test can be performed. The use of the detection method greatly increases labor cost and time cost, and the test effect is affected by cold joint and the like, so that a DCR test fixture capable of directly testing the aluminum shell battery cell is urgently needed at present.

Disclosure of Invention

The utility model aims to provide a DCR test fixture for an aluminum shell battery cell, which can simply, practically, quickly and cheaply ensure the DCR test of the aluminum shell battery cell.

The technical aim of the utility model is realized by the following technical scheme: the DCR test fixture comprises a bottom plate, a cavity for placing the power supply core is arranged on the bottom plate, an air cylinder is further arranged on the bottom plate, a support is connected to the piston end of the air cylinder, a probe seat is arranged on one side, away from the air cylinder, of the support, probes are arranged on the left side and the right side of the support, the probes are arranged on the probe seat, a manual control valve is further arranged on the bottom plate, and the manual control valve is electrically connected with the air cylinder.

The utility model is further provided with: the cavity is formed by a side limiting block and a tail limiting block, the side limiting block is arranged on two sides of the bottom plate, which is far away from one end of the air cylinder, and the tail limiting block is arranged at the end part of the side limiting block.

The utility model is further provided with: a notch is arranged between the two tail limiting blocks.

The utility model is further provided with: the base plate is provided with a plurality of cylinder fixing holes, cylinder cushion blocks are arranged on the cylinder fixing holes, and the cylinders are arranged on the cylinder cushion blocks.

The utility model is further provided with: the base plate is also provided with a plurality of side limiting block mounting holes, and the side limiting blocks are mounted on the side limiting block mounting holes.

The utility model is further provided with: the side limiting block is provided with limiting steps and side limiting mounting holes, and the mounting holes are waist-shaped.

The utility model is further provided with: the top of the side limiting block is provided with a chamfer.

The utility model is further provided with: the probe seat mounting block is arranged on the support, the probe seat is arranged on the probe seat mounting block, the probe seat mounting block is provided with an adjusting hole, and the adjusting hole is used for fixing the probe seat mounting block on the support.

The utility model is further provided with: the adjusting holes are waist-shaped holes and are used for transversely adjusting the positions of the probe seat mounting blocks.

The beneficial effects of the utility model are as follows: the novel cylinder and manual valve control is adopted, no power is needed, and the operation can be realized only by connecting an air pipe, so that the use is very simple. The utility model has simple structure, low manufacturing cost and simple operation, when the fixture is used, the fixture is fixed, then the air pipe is inserted, compressed air is connected, the position of the air cylinder is adjusted according to the height of the battery cell, and then the work can be started. When the electric core testing device works, the electric core is placed in the clamping groove formed by the electric core limiting block, and the testing cabinet can be started to test by pulling the switch of the manual valve. After the test is completed, the manual valve switch is pulled, the battery core is taken out, and then the next battery core to be tested is put in, so that one round of operation is completed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the general structure of the present utility model;

FIG. 2 is a schematic diagram of the battery cell according to the present utility model;

FIG. 3 is a schematic view of the structure of the base plate of the present utility model;

FIG. 4 is a schematic view of a side restraint block of the present utility model;

FIG. 5 is a schematic view of a probe mount block of the present utility model;

FIG. 6 is a schematic view of a probe holder of the present utility model;

in the figure, 1, a bottom plate; 2. a side limit block; 3. a tail limiting block; 4. a cylinder; 5. a cylinder cushion block; 6. a bracket; 7. a probe seat mounting block; 8. a probe seat; 9. a probe; 10. a manual valve; 11. a manual valve mounting plate; 12. a battery cell; 101. a cylinder fixing hole; 102. a side limit block mounting hole; 103. a clearance groove; 104. a manual valve mounting plate mounting hole; 201. a limit step; 202. a side limit mounting hole; 203. chamfering; 701. the probe seat is provided with a threaded hole; 702. an adjustment aperture; 801. a test wire connection hole; 802. a probe seat mounting hole; 803. and a probe mounting hole.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the embodiment, fig. 1 and 2 include a base plate 1, a side limiting block 2, a tail limiting block 3, a cylinder 4, a cylinder cushion block 5, a bracket 6, a probe seat mounting block 7, a probe seat 8, a probe 9, a manual valve 10 and a manual valve mounting plate 11. The side limiting block 2 and the tail limiting block 3 are arranged at one end of the bottom plate, and a cavity is formed between the side limiting block 2 and the tail limiting block and is used for placing and limiting the battery cell 12. The tail limiting blocks 3 are two, and a gap is formed between the two limiting blocks and is used for taking the discharge core by hands. The cylinder 4 is installed on the cylinder cushion block 5 first, the cylinder cushion block 5 is installed on the bottom plate 1, the probe 9 is installed on the probe seat 8, the probe seat 8 is installed on the probe installation block 7, the probe installation block 7 is installed on the support 6, the support 6 is installed on the cylinder 4 again, and the probe seat and the probe can be pushed in the direction of the limiting block through the operation of the cylinder 4.

In fig. 3, the bottom plate 1 is provided with a cylinder fixing hole 101, a side limiting block mounting hole 102, a clearance groove 103 and a manual valve mounting hole 104, the cylinder fixing hole 101 is provided with two groups of holes, and the position of the cylinder can be adjusted by selecting different hole groups, so that the cylinder is compatible with more battery cell heights. The clearance groove 103 not only can lighten the weight of the whole fixture, but also can facilitate the hand to take out the discharge core.

In fig. 4, the side limiting block 2 is made of POM, and has an insulating effect, a limiting step 201 is machined on the side limiting block, a side limiting mounting hole 202 and a chamfer 203 are machined on the side limiting block, the limiting step 201 has the effect of supporting and limiting the battery cells, the mounting hole 202 is a waist-shaped hole, and the position of the side limiting block 2 can be adjusted to adapt to the battery cells with different widths. The chamfer 203 can play a guiding role when the cell is discharged again, so that the separator on the surface of the cell is prevented from being scratched.

In fig. 5, the probe seat mounting block 7 is made of glass fiber materials, so that the strength can be ensured, an insulating effect is achieved, a probe seat mounting threaded hole 701 is processed on the probe seat mounting block, an adjusting hole 702 is formed in the probe seat mounting block, the threaded hole 701 is used for fixing a probe seat 8, the adjusting hole 702 is used for fixing the probe seat mounting block on a bracket 6, the adjusting hole 702 is a waist-shaped hole, the position of the probe seat mounting block 7 can be transversely adjusted, and therefore the position of a probe 9 between the positive electrode and the negative electrode is adjusted, and battery cores with different pole spacing are compatible.

In fig. 6, the probe seat 8 is of an L' shape, is made of a red copper material, and can reduce resistance and increase conductivity, one end of the probe seat 8 is provided with a round hole 801, which is used for being connected with a test wire on the test cabinet, the other end of the probe seat 8 is provided with four round holes 802 and two threaded holes 803, the four round holes 802 are used for fixing the probe seat 8 on the probe seat mounting block 7, the threaded holes 803 are used for mounting probes 9, and each probe seat can correspondingly mount two probes. The rated overcurrent capacity of the probe 9 is 100A, and 200A current can be maximally passed when two probes are shared, so that the current greatly exceeds the current during testing, the circuit safety is ensured, and the service life of the clamp is prolonged.

In fig. 1 and 2, the manual valve 10 is fixed on one side of the fixture by a manual valve fixing plate 11, the manual valve 10 needs to be connected with the cylinder by an air pipe, two air pipe structures are arranged on one end of the manual valve and are used for being connected with the cylinder, and three structures are arranged on the other end of the manual valve, wherein two of the structures are provided with a muffler, and the other structure is provided with an air pipe connector and is used for being connected with an air inlet pipe.

The specific working principle is as follows: firstly, the clamp is adjusted, the waist-shaped holes on the side limiting block 2 are adjusted, so that the battery cells are positioned well, then the interval between the positive and negative electrode probes is adjusted according to the waist-shaped holes on the probe seat mounting block 7, so that the interval can correspond to the probe poles, and when the adjustment is finished, the air inlet pipe can be inserted for use. When the electric core is used, a person holds the electric core and puts the electric core into a limit groove formed by the side limit block 2 and the tail limit block 3, the bottom of the electric core is stuck to the tail limit block, then a switch on the manual valve 10 is pulled, the air cylinder 4 pushes the probe and the support under the action of air pressure, so that the probe is pressed on positive and negative poles of the electric core, and then the test cabinet can be started for testing. After the test is finished, the switch on the manual valve 10 is turned on, the air cylinder 4 pulls the probe and the bracket to retract, the battery core to be tested is taken out, and the next battery core to be tested is put into, so that one round of operation is finished.

The above examples merely represent a few embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it is possible for those skilled in the art to make several variations and modifications without departing from the spirit of the present utility model, which are all within the scope of the present utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a DCR test fixture of aluminum hull electricity core which characterized in that: including bottom plate (1), be provided with the cavity that power supply core (12) placed on bottom plate (1), still be provided with cylinder (4) on bottom plate (1), the piston end of cylinder (4) is connected with support (6), support (6) are kept away from one side of cylinder (4) is provided with probe seat (8), probe seat (8) set up the left and right sides of support (6), install probe (9) on probe seat (8), still install manual valve (10) on bottom plate (1), manual valve (10) with cylinder (4) electrical connection.

2. The DCR test fixture of an aluminum cell according to claim 1, wherein: the cavity is formed by side limit blocks (2) and tail limit blocks (3), the side limit blocks (2) are arranged on two sides, away from one end of the air cylinder (4), of the bottom plate (1), and the tail limit blocks (3) are arranged at the end parts of the side limit blocks (2).

3. The DCR test fixture of an aluminum cell according to claim 2, wherein: a gap is arranged between the two tail limiting blocks (3).

4. The DCR test fixture of an aluminum cell according to claim 1, wherein: the base plate (1) is provided with a plurality of cylinder fixing holes (101), cylinder cushion blocks (5) are arranged on the cylinder fixing holes (101), and the cylinders (4) are arranged on the cylinder cushion blocks (5).

5. The DCR test fixture of an aluminum cell according to claim 1, wherein: the base plate (1) is also provided with a plurality of side limiting block mounting holes (102), and the side limiting blocks (2) are mounted on the side limiting block mounting holes (102).

6. The DCR test fixture of an aluminum cell according to claim 2, wherein: the side limiting block (2) is provided with a limiting step (201) and a side limiting mounting hole (202), and the side limiting mounting hole (202) is a waist-shaped hole.

7. The DCR test fixture of an aluminum cell according to claim 2, wherein: the top of the side limiting block (2) is provided with a chamfer (203).

8. The DCR test fixture of an aluminum cell according to claim 1, wherein: install probe seat installation piece (7) on support (6), probe seat (8) are installed on probe seat installation piece (7), regulation hole (702) have been seted up to probe seat (8) installation piece (7), regulation hole (702) are used for fixing probe seat installation piece (7) on support (6).

9. The DCR test fixture of the aluminum cell of claim 8, wherein: the adjusting hole (702) is a waist-shaped hole and is used for transversely adjusting the position of the probe seat mounting block (7).