In-situ magnetic test system for soft package battery

Abstract

The utility model discloses an in-situ magnetic test system for a soft package battery. The in-situ magnetic test system comprises a computer, a blue electricity test system, a sample table and a sample rod assembly, the sample rod assembly comprises a bottom support, a rod body and a protective sleeve assembly, the bottom support is used for placing a to-be-tested soft package battery, and the bottom support is provided with contacts correspondingly connected with the positive electrode and the negative electrode of the soft package battery respectively; the rod body is connected with the bottom support, two groups of connecting wires are arranged in the rod body and are respectively connected with two contacts on the bottom support, so that the connection with the positive electrode and the negative electrode of the soft package battery is realized, the charging / discharging of the soft package battery can be realized in a test, and the connecting wires are coated with insulating hoses, so that the influence on a test result is avoided; the protection sleeve assembly comprises a protection sleeve, a reinforcing sleeve and a base, through the cooperation of the reinforcing sleeve and the protection sleeve, the soft package battery can be reinforced, the situation that the welding position is broken due to shaking of the soft package battery in the testing process is avoided, and the charging / discharging stability of the soft package battery is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic testing, in particular to an in-situ magnetic testing system for soft-pack batteries. Background Art

[0002] In the prior art, by constructing a magnetic field and charging / discharging the materials in the magnetic field, real-time magnetic information of the materials during the charging / discharging process is obtained. During the testing process, in order to facilitate the charging / discharging of the soft-pack battery, the positive and negative electrodes of the soft-pack battery are generally welded to the sample rod by welding. However, due to the small size of the micro soft-pack battery, the welding is likely to be insecure. To avoid the problem of charging / discharging failure caused by insecure welding during the testing, it is necessary to reinforce the micro soft-pack battery to be tested. To achieve this purpose, the utility model designs an in-situ magnetic testing system for soft-pack batteries. Summary of the Utility Model

[0003] The utility model provides an in-situ magnetic testing system for soft-pack batteries, which can at least solve one of the problems pointed out in the background art.

[0004] An in-situ magnetic testing system for soft-pack batteries includes a computer, a blue electricity testing system and a sample stage, and further includes a sample rod assembly, and the sample rod assembly includes:

[0005] A bottom bracket for placing the soft-pack battery to be tested, and contacts corresponding to the positive and negative electrodes of the soft-pack battery are arranged on the bottom bracket;

[0006] A rod body connected to the bottom bracket, and two groups of connecting wires are arranged inside the rod body, and the two groups of connecting wires are respectively connected to the two contacts on the bottom bracket; and

[0007] A protective sleeve assembly slidably arranged on the rod body.

[0008] Preferably, the protective sleeve assembly includes a protective sleeve, a reinforcing sleeve and a base, the protective sleeve is installed on the base, and the base is slidably arranged on the rod body.

[0009] Preferably, the inner diameter of the reinforcing sleeve is larger than the outer diameter of the protective sleeve, and a reinforcing ring is further arranged inside the reinforcing sleeve. When the reinforcing sleeve is docked with the protective sleeve, the reinforcing ring abuts against the protective sleeve, so that the protective sleeve contracts inward.

[0010] Preferably, the reinforcing ring has a tapered groove, the maximum inner diameter of the tapered groove is larger than the outer diameter of the protective sleeve, and the minimum inner diameter is smaller than the outer diameter of the protective sleeve.

[0011] Preferably, a retaining ring is fixedly arranged on the rod body, a rubber limiting ring is arranged inside the protective sleeve, and the outer diameter of the retaining ring is larger than the inner diameter of the rubber limiting ring.

[0012] Preferably, one side of the rubber limit ring is an arc surface, and the other side is a plane perpendicular to the axial direction of the rod body.

[0013] Preferably, both the blue electrical test system and the sample stage are communicatively connected to a computer.

[0014] Preferably, an insulating hose is coated on the connecting wire.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the cooperation of the reinforcement sleeve and the protective sleeve, the present utility model realizes the reinforcement of the soft-pack battery, avoids the disconnection of the welding part caused by the shaking of the soft-pack battery during the test, and ensures the stability of the charge / discharge of the soft-pack battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the sample rod assembly of the present utility model;

[0018] Figure 3 is the cross-sectional view of the protective sleeve assembly of the present utility model.

[0019] DESCRIPTION OF THE REFERENCE NUMERALS:

[0020] 1 - Computer, 2 - Blue electrical test system, 3 - Sample stage, 4 - Sample rod assembly, 5 - Bottom support, 6 - Rod body, 7 - Protective sleeve assembly, 8 - Soft-pack battery, 9 - Contact point, 10 - Connecting wire, 11 - Protective sleeve, 12 - Reinforcement sleeve, 13 - Base, 14 - Reinforcement ring, 15 - Conical groove, 16 - Retaining ring, 17 - Rubber limit ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following combines the drawings to describe in detail a specific embodiment of the present utility model, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiment.

[0022] As Figures 1 to 3 shown, a soft-pack battery in-situ magnetic testing system provided by an embodiment of the present utility model includes a computer 1, a blue electrical test system 2, a sample stage 3, and a sample rod assembly 4;

[0023] Among them, both the blue electrical test system 2 and the sample stage 3 are communicatively connected to the computer 1 through cables to control commands and transmit data. This is the prior art and will not be elaborated here;

[0024] Specifically, to achieve the reinforcement of the micro soft-pack battery to be tested, the sample rod assembly 4 of this embodiment includes a base 5, a rod body 6, and a protective sleeve assembly 7. The base 5 is used to place the soft-pack battery 8 to be tested, and contacts 9 corresponding to the positive and negative electrodes of the soft-pack battery 8 are arranged on the base 5;

[0025] The rod body 6 is connected to the base 5. Two groups of connecting wires 10 are arranged inside the rod body 6. The two groups of connecting wires 10 are respectively connected to the two contacts 9 on the base 5, so as to realize the connection with the positive and negative electrodes of the soft-pack battery, and the charging / discharging of the soft-pack battery 8 can be realized during the test. The connecting wires 10 are coated with insulating hoses to avoid affecting the test results;

[0026] The protective sleeve assembly 7 is slidably arranged on the rod body 6. It includes a protective sleeve 11, a reinforcing sleeve 12, and a base 13. The base 13 is slidably arranged on the rod body 6, and the protective sleeve 11 is installed on the base 13. The protective sleeve 11 and the reinforcing sleeve 12 wrap the soft-pack battery 8 in a butt-joint form;

[0027] Specifically, the inner diameter of the reinforcing sleeve 12 is larger than the outer diameter of the protective sleeve 11. A reinforcing ring 14 is also arranged inside the reinforcing sleeve 12. The reinforcing ring 14 has a tapered groove 15. The maximum inner diameter of the tapered groove 15 is larger than the outer diameter of the protective sleeve 11, and the minimum inner diameter is smaller than the outer diameter of the protective sleeve 11. When the reinforcing sleeve 12 is butted with the protective sleeve 11, the reinforcing ring 14 abuts against the protective sleeve 11, causing the protective sleeve 11 to contract inward, thereby applying a certain pressure on the soft-pack battery 8 to avoid the disconnection of the welding joint due to the shaking of the soft-pack battery 8 during the test;

[0028] In addition, when the reinforcing sleeve 12 is butted with the protective sleeve 11, to prevent the reinforcing sleeve 12 from retreating, a retaining ring 16 is fixedly arranged on the rod body 6, and a rubber limit ring 17 is arranged inside the protective sleeve 11. The outer diameter of the retaining ring 16 is larger than the inner diameter of the rubber limit ring 17. One side of the rubber limit ring 17 is an arc surface, and the other side is a plane perpendicular to the axial direction of the rod body 6. During the process of pushing the protective sleeve 11 to cover the soft-pack battery 8, the arc surface of the rubber limit ring 17 contacts and is compressed by the retaining ring 16, so that the rubber limit ring 17 passes through the retaining ring 16. However, because the other side of the rubber limit ring 17 is a plane, it is not so easy to return to its original position through the retaining ring 16. Of course, after the test is completed, pulling the protective sleeve 11 forcefully can also make the protective sleeve 11 return to its initial position. This design facilitates the butting of the reinforcing sleeve 12 and the protective sleeve 11;

[0029] The testing process is as follows: First, the static soft-pack battery 8 is welded onto the base 5 of the sample rod assembly 4, ensuring good contact at the welding point and normal battery voltage during welding. Then, the docking of the protective sleeve 11 and the reinforcement sleeve 12 is carried out to reinforce the soft-pack battery 8. During testing, the sample stage 3 adopts the DC mode, and the centering magnetic field strength is 3T to ensure the symmetry of the centering curve. Then, the sample rod assembly 4 is connected to the LAND testing system 2, ensuring that the positive and negative poles are not reversed. Then, the testing conditions are set to 3T and 300K, and the sampling interval is 10s. Next, when the magnetic testing conditions are stable at the target magnetic field strength and temperature, the soft-pack battery is immediately subjected to charge / discharge testing using the LAND testing system 2, with the current intensity set to 0.1C. Finally, the real-time magnetic information during the charge / discharge process of the material, that is, the relationship between magnetization intensity and time, is obtained.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit and basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soft-pack battery in-situ magnetic testing system, comprising a computer, a blue-electricity testing system and a sample table, characterized in that: Also included is a sample rod assembly, the sample rod assembly comprising: A bottom tray is used to place the soft-pack battery to be tested, and the bottom tray is provided with contacts corresponding to the positive and negative electrodes of the soft-pack battery; A rod body connected to the base has two sets of connecting wires disposed therein, and the two sets of connecting wires are respectively connected to two contact points on the base; and The protective sleeve assembly is slidably arranged on the rod body.

2. The in-situ magnetic testing system for soft-pack batteries according to claim 1, characterized in that: The protective sleeve assembly comprises a protective sleeve, a reinforcement sleeve and a base, the protective sleeve is installed on the base, and the base is slidably arranged on the rod body.

3. The in-situ magnetic testing system for soft-pack batteries according to claim 2, characterized in that: The inner diameter of the reinforcement sleeve is larger than the outer diameter of the protective sleeve. A reinforcement ring is also arranged inside the reinforcement sleeve. When the reinforcement sleeve is connected to the protective sleeve, the reinforcement ring contacts the protective sleeve, causing the protective sleeve to shrink inward.

4. The in-situ magnetic testing system for soft-pack batteries according to claim 3, characterized in that: The reinforcement ring has a tapered groove, the maximum inner diameter of the tapered groove is larger than the outer diameter of the protective sleeve, and the minimum inner diameter is smaller than the outer diameter of the protective sleeve.

5. The in-situ magnetic testing system for soft-pack batteries according to claim 3, characterized in that: A retaining ring is fixedly arranged on the rod body, a rubber limiting ring is arranged in the protective sleeve, and the outer diameter of the retaining ring is greater than the inner diameter of the rubber limiting ring.

6. The in-situ magnetic testing system for soft-pack batteries according to claim 5, characterized in that: One side of the rubber limiting ring is an arc surface, and the other side is a plane perpendicular to the axial direction of the rod body.

7. The in-situ magnetic testing system for soft-pack batteries according to claim 1, characterized in that: The blue electricity testing system and the sample platform are both connected to a computer for communication.

8. The in-situ magnetic testing system for soft-pack batteries according to claim 1, characterized in that: The connecting wire is covered with an insulating hose.

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