CN115524646A - Magnetism test battery device and normal position magnetism detecting system - Google Patents

Abstract

The embodiment of the application discloses magnetism test battery device and normal position magnetism detecting system, the device includes the normal position magnetism test battery of adaptation frequency conversion alternating current magnetic susceptibility apparatus. The magnetic testing battery comprises positive and negative electrodes, a diaphragm, positive and negative electrode leads and a lead fixing device, wherein one end of each electrode lead is used for connecting the electrodes, and the other end of each electrode lead is used for connecting an electrochemical workstation. The magnetism test battery can accurately eliminate the magnetic noise and improve the test precision. The magnetic testing battery can form a closed accommodating cavity to prevent the oxidation of electrodes and electrolyte, and can be matched with a variable-frequency alternating-current magnetic susceptibility tester to detect various magnetic signal changes in the electrochemical reaction process of the battery in situ.

Description

Magnetism test battery device and normal position magnetism detecting system

Technical Field

The application relates to the technical field of testing, in particular to a battery device for magnetic testing and an in-situ magnetic detection system.

Background

The electrode material is the basis for researching and developing the high-performance battery, the electrode material mechanism can avoid material defects, explore the high-performance electrode material and develop a brand new energy storage mechanism, and in short, the electrode material mechanism plays a crucial role in developing and developing the high-performance battery.

However, the electron transfer condition of the electrode material in the electrochemical reaction process cannot be well characterized by the existing research and development means, and the magnetic test can solve the above dilemma because each electron has a magnetic moment due to spin, and each electron transfer causes magnetic change.

In the magnetic testing process, the battery testing in the prior art cannot solve the problem of magnetic signal interference or cannot intuitively reflect the change of the magnetic signal in real time, and the testing precision is low. The frequency-variable AC magnetic susceptibility tester can be used as an analyzer for measuring the magnetic characteristics of magnetic substances and also can be used as an instrument for measuring the concentration of the magnetic substances. Compared with other magnetic testing equipment, the magnetic testing device has the characteristics of simplicity in operation, short measuring time, good repeatability, small required sample amount and the like.

Disclosure of Invention

The embodiment of the application provides a magnetism test battery device and normal position magnetism detecting system, and this test system is with low costs, test time is short, easy operation is convenient to can be at the multiple magnetic signal of battery operation in-process real-time supervision battery change, accurate noise abatement, the measuring accuracy height.

In a first aspect, an embodiment of the present application provides a battery assembly apparatus, including: an in-situ magnetic test cell adapted to a magnetic susceptibility determinator.

The magnetic testing battery comprises a positive electrode, a negative electrode, a diaphragm, a positive electrode lead and a negative electrode lead, and a lead fixing device, wherein one end of the electrode lead is used for connecting the electrodes, and the other end of the electrode lead is used for connecting an electrochemical workstation;

when the magnetic testing battery is connected with the electrochemical workstation, the magnetic testing battery can be assembled by depending on a self-testing device of a variable-frequency alternating-current magnetic susceptibility tester, so that the in-situ measurement of the battery is carried out;

preferably, after the magnetic test battery is assembled, the battery is assembled into an opaque sheet structure, and the shape of the battery can be changed according to a test cavity of a variable frequency alternating current susceptibility tester; in addition, the lead fixer of the magnetic test battery is elliptical;

preferably, one end of the positive and negative electrode leads extending out of the elliptical structure is connected with the positive and negative electrodes of the electrochemical test station;

in a second aspect, an embodiment of the present application provides an in-situ magnetic detection system, including: the device comprises an electrochemical workstation, a variable frequency alternating current magnetic susceptibility determinator, a magnetism test battery and a signal detection system;

the current source is used for connecting the anode and the cathode of the magnetic testing battery so as to control the charging and/or discharging of the battery to be tested;

the variable frequency alternating current magnetic susceptibility tester is used for providing a magnetic field;

the signal detection system is used for detecting the magnetic signal of the magnetism test battery in the process of charging and/or discharging the battery to be tested.

By adopting the technical scheme provided by the embodiment of the application, various magnetic signal changes in the chemical reaction process of the battery can be detected in situ, and the test precision is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a magnetic testing battery assembly apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a soft-package magnetic test battery assembly device provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another magnetic detection system provided in an embodiment of the present application;

the symbols in the figures are represented as: 101-a first aluminum plastic film, 102-a first electrode, 103-a diaphragm, 104-a second electrode, 105-a second aluminum plastic film, 106-a first electrode lead, 107-a sealant, 108-a lead fixing device, 109-a second electrode lead, 201-an electrochemical workstation, 202-a variable frequency alternating current magnetic susceptibility tester, 203-a magnetic test battery, 204-an electrochemical signal detection system, and 205-a magnetic signal detection system.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a battery device for magnetic testing and an in-situ magnetic detection system based on a variable-frequency alternating-current magnetic susceptibility tester, and the battery device is described in detail with reference to the attached drawings.

Referring to fig. 1, a schematic structural diagram of a battery assembly apparatus according to an embodiment of the present disclosure is shown. As shown in fig. 1, the battery assembly apparatus includes a first aluminum-plastic film 101 and a second aluminum-plastic film 105 which are matched to each other and adhered by a sealant, so as to form a sealed cavity to prevent oxidation of the electrode material and the electrolyte. Inside the sealed cavity, there are also first electrode 102, second electrode 104, diaphragm 103, first cathode wire 106 and second cathode wire 109 connected to the positive and negative electrodes on one side and to the electrochemical workstation via lead fixer 108 on the other side. The lead fixer can prevent lead shake and other conditions that influence the test result that arouse in the test procedure, reduces magnetism test battery installation degree of difficulty simultaneously.

Referring to fig. 2, a schematic structural diagram of a pouch battery assembly apparatus according to an embodiment of the present application is provided. As shown in fig. 2, which was based on the embodiment shown in fig. 1 and was produced by compacting the individual components of the magnetic test cell using a thermoplastic device. Meanwhile, the whole testing process is operated in a vacuum glove box, so that the electrode is prevented from being oxidized. After the assembly is finished, the battery needs to stand for 12 hours to enable the electrolyte to fully soak the electrode plates and the diaphragm, and in addition, the conventional electrochemical test needs to be carried out on the magnetic test battery to ensure the successful assembly of the magnetic test battery and the reliability of the test result.

Corresponding to the battery assembling device, the embodiment of the application also provides an in-situ magnetic detection system based on the variable-frequency alternating-current magnetic susceptibility tester, and the magnetic detection system can be used for in-situ detecting various magnetic signal changes in the chemical reaction process of the battery in real time. The following detailed description is made with reference to the accompanying drawings.

Fig. 3 is a schematic structural diagram of a magnetic detection system according to an embodiment of the present disclosure. As shown in fig. 3, the magnetic detection system includes: an electrochemical workstation 201, a variable frequency ac susceptibility determinator 202, a magnetic test cell 203, an electrochemical signal detection system 204, and a magnetic signal detection system 205.

The electrochemical workstation 201 is connected with positive and negative leads of the magnetic test battery 203, thereby controlling the charging and discharging of the magnetic test battery. The variable frequency ac susceptibility meter 202 provides a magnetic field to detect a magnetic signal. The electrochemical signal detection system 204 and the magnetic signal detection system 205 respectively display the electrochemical test result and the magnetic test result.

Specifically, the magnetic detection system provided by the embodiment of the application can be used for detecting characteristic research of alternating magnetic susceptibility of magnetic fluid of a magnetic test battery along with frequency of an external alternating magnetic field and measuring magnetic concentration of materials, and is small in required sample amount, high in test speed and simple and convenient to operate.

It should be noted that, the battery device for magnetic testing based on a variable frequency ac susceptibility tester provided in the embodiment of the present application may be applicable to other types of batteries besides the ion battery, and details of the embodiment of the present application are not repeated.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims (5)

1. A magnetic test battery apparatus, comprising: an in-situ magnetic measurement cell adapted to a magnetic susceptibility meter;

the magnetic testing battery comprises a positive electrode, a negative electrode, a diaphragm, positive and negative electrode leads and a lead fixing device, wherein one end of each positive and negative electrode lead is used for connecting the positive and negative electrodes, and the other end of each positive and negative electrode lead is used for connecting an electrochemical workstation;

after the magnetic testing battery is connected with the electrochemical workstation, the battery can be assembled by depending on a self-provided testing device of the variable-frequency alternating-current magnetic susceptibility tester, so that the in-situ measurement of the battery is carried out.

2. The apparatus of claim 1, wherein after the magnetic test cell is assembled, the cell is assembled in an opaque sheet-like structure that changes shape according to a variable frequency ac susceptibility tester test chamber; the lead wire fixer of the magnetic test battery is elliptical.

3. The apparatus of claim 2, wherein positive and negative electrode leads extend out of one end of the oval-like structure.

4. The device of claim 3, wherein the magnetic test cell is a pouch cell and the negative and positive negative lines are connected to the positive and negative poles of the electrochemical test station.

5. An in-situ magnetic detection system, comprising: the device comprises an electrochemical workstation, a variable frequency alternating current magnetic susceptibility determinator, a magnetism test battery and a signal detection system;

the current source is used for connecting the positive electrode and the negative electrode of the magnetic testing battery so as to control the charging and/or discharging of the battery to be tested;

the variable frequency alternating current magnetic susceptibility tester is used for providing a magnetic field;

the signal detection system is used for detecting the magnetic signal of the magnetic test battery in the charging and/or discharging process of the battery to be tested.

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