Device for detecting gas production performance of pole piece

Abstract

The utility model relates to a pole piece gas production performance detection device which comprises a shell, a detection assembly and two binding posts capable of being electrically connected with pole pieces in a one-to-one correspondence mode, the two binding posts are both arranged on the shell, and a sealing cavity for the two pole pieces to be placed in is arranged in the shell. The shell is provided with an air outlet communicated with the sealing cavity, and the detection assembly is communicated with the sealing cavity through the air outlet. According to the pole piece gas production performance detection device provided by the utility model, the problem that the existing detection equipment is difficult to comprehensively evaluate the performance of pole pieces made of different materials is solved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the gas production performance of electrode sheets. Background Technology

[0002] Lithium-ion batteries, as important energy storage devices, are widely used in mobile communications, electric vehicles, and other fields. The gas generation performance of the positive and negative electrode materials in lithium-ion batteries directly affects the battery's safety and lifespan.

[0003] Current electrode performance testing devices generally test the electrical properties of electrodes, but cannot evaluate the gas generation performance of electrode materials, making it difficult to comprehensively evaluate the performance of electrodes made of different materials. Utility Model Content

[0004] The main purpose of this invention is to propose a device for testing the gas production performance of electrodes, which aims to solve the problem that existing testing equipment is unable to comprehensively evaluate the performance of electrodes made of different materials.

[0005] To achieve the above objectives, this utility model proposes an electrode gas production performance testing device, comprising a housing, a testing component, and two terminals that can be electrically connected to each electrode in a one-to-one correspondence. The two terminals are both located on the housing. The housing has a sealed cavity into which the two electrodes can be placed. The housing has an outlet that communicates with the sealed cavity. The testing component communicates with the sealed cavity through the outlet.

[0006] According to some embodiments of this utility model, the air outlet is offset from the vertical projection position of the two electrode plates.

[0007] According to some embodiments of the present invention, the housing includes two spliced ​​plates, and the two plates have two receiving grooves opposite each other, which can be combined to form the sealing cavity.

[0008] According to some embodiments of the present invention, a sealing part is also included, which is disposed between the two plates and has a communication opening, through which the two receiving grooves are connected.

[0009] According to some embodiments of the present invention, it further includes an insulating partition, which is disposed within the sealed cavity and has a first surface and a second surface facing each other, so that two electrode plates are installed at intervals on the first surface and the second surface.

[0010] According to some embodiments of the present invention, the two terminals are respectively installed on the two plates, and the insulating separator is located between the two plates so that the electrode plate electrically connected to each terminal is installed in the receiving groove of the corresponding plate.

[0011] According to some embodiments of the present invention, it further includes two conductive plates disposed in the sealed cavity, the two conductive plates being electrically connected to the two terminals respectively, the two conductive plates being disposed on both sides of the insulating partition, and each conductive plate cooperating with the insulating partition to form a clamping groove for the electrode to extend into and abut.

[0012] According to some embodiments of the present invention, it further includes two elastic elements disposed in the sealed cavity. Each elastic element is electrically connected to the terminal block via a wire. One end of each elastic element is connected to the inner wall of the sealed cavity, and the other end is connected to the conductive plate.

[0013] According to some embodiments of this utility model, the detection component is connected to the air outlet via a one-way valve.

[0014] According to some embodiments of the present invention, the detection component includes a trachea, a test section capable of containing liquid, and a sensor capable of detecting the number of air bubbles. One end of the trachea is connected to the air outlet, and the other end extends into the test section and is located below the liquid surface. The test section is located within the detection area of ​​the sensor.

[0015] This utility model has at least the following beneficial effects:

[0016] In this invention, both terminals are located on the housing. The housing contains a sealed cavity into which the two electrodes can be inserted. An outlet communicating with the sealed cavity is provided on the housing. The detection component communicates with the sealed cavity through the outlet. The two terminals connect the two electrodes to the positive and negative terminals of an external power supply. When the two electrodes are energized, they generate gas. This gas accumulates at the top of the sealed cavity and is then discharged from the outlet to the detection component for various tests. Existing electrode performance testing devices generally test the electrical properties of the electrodes but cannot evaluate the gas generation performance of the electrode material, making it difficult to comprehensively evaluate the performance of electrodes made of different materials. This invention, however, can directly detect the gas generation of the electrodes, accommodates electrodes with a larger area, thereby increasing the amount of gas produced. Simultaneously, the sealed cavity gathers the gas produced by the two electrodes, and once a certain amount of gas is reached, it is output for testing, further increasing the amount of gas output to the detection component. This allows the detection component to accurately measure the gas generation performance of the electrodes, thus enabling a more comprehensive evaluation of the performance of electrodes made of different materials. The electrode gas generation performance testing device provided by this utility model enables the testing of electrode gas generation performance, solving the problem that existing testing equipment is unable to comprehensively evaluate the performance of electrodes made of different materials. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an electrode gas generation performance testing device provided in an embodiment of this utility model;

[0019] Figure 2 for Figure 1 An exploded view of the electrode gas production performance testing device after removing the testing components.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100-Electrode gas generation performance testing device; 1-Housing; 11-Gas outlet; 12-Plate; 121-Receiving groove; 2-Detection component; 21-Gas pipe; 22-Testing part; 23-Sensor; 3-Terminal; 4-Sealing part; 41-Connecting port; 5-Insulation separation part; 6-Conductive plate; 7-Elastic element; 8-One-way valve. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This invention provides a device for testing the gas production performance of electrode plates. Figures 1 to 2 This invention provides a specific embodiment of an electrode gas generation performance testing device.

[0026] like Figure 1 and Figure 2 As shown, this utility model embodiment provides an electrode gas production performance testing device 100, including a housing 1, a testing component 2, and two terminals 3 that can be electrically connected to each electrode in a one-to-one correspondence. The two terminals 3 are both provided on the housing 1. The housing 1 is provided with a sealed cavity for the two electrodes to be placed inside. The housing 1 is provided with an outlet 11 that communicates with the sealed cavity. The testing component 2 communicates with the sealed cavity through the outlet 11.

[0027] In this invention, both terminals 3 are mounted on the housing 1. The housing 1 contains a sealed cavity into which the two electrodes can be inserted. An outlet 11 communicating with the sealed cavity is provided on the housing 1. The detection component 2 communicates with the sealed cavity through the outlet 11. The two terminals 3 connect the two electrodes to the positive and negative terminals of an external power supply. When the two electrodes are energized, gas is generated. This gas accumulates at the top of the sealed cavity and is then discharged from the outlet 11 to the detection component 2 to complete various tests. Existing electrode performance testing devices generally test the electrical properties of electrodes, but cannot evaluate the gas generation performance of electrode materials, making it difficult to comprehensively assess the performance of electrodes made of different materials. This application, however, can directly detect the gas generation of electrodes, accommodate larger electrode areas, thereby increasing the amount of gas produced by the electrodes. Simultaneously, the gas produced by two electrodes is collected through the sealed cavity, and once a certain amount of gas is reached, it is output for detection, further increasing the amount of gas output to the detection component 2. This allows the detection component 2 to accurately measure the gas generation performance of the electrodes. The electrode gas generation performance testing device 100 provided by this utility model solves the problem that existing testing equipment cannot comprehensively evaluate the performance of electrodes made of different materials.

[0028] The specific location of the air outlet 11 is not limited, as long as it ensures that the gas in the sealed cavity can be output to the detection component 2 through the air outlet 11. For example, in some embodiments, such as... Figure 2 As shown, the air outlet 11 is offset from the two electrodes in the vertical projection position. Due to the low density of the gas, it will rise to the upper part of the sealed cavity. The offset position of the air outlet 11 from the two electrodes in the vertical direction allows the gas to accumulate in the upper part of the sealed cavity to a certain amount before being output from the air outlet 11 under the compression of newly generated gas, thereby increasing the amount of gas output to the detection component 2.

[0029] The specific structure of the housing 1 is not limited, as long as the housing 1 has a sealed cavity for collecting gas. For example, in some embodiments, such as... Figure 2 As shown, the housing 1 includes two spliced ​​plates 12, with two receiving grooves 121 formed opposite to each other on the two plates 12. The two receiving grooves 121 can be combined to form the sealed cavity. This arrangement, by assembling the entire device through stacking and splicing, improves the efficiency of assembly and disassembly, and reduces the manufacturing difficulty of the housing 1, thereby reducing production costs.

[0030] Since a gap exists between the two plates 12 after they are joined together, gas produced by the electrode may leak. Therefore, in some embodiments, such as... Figure 1 and Figure 2As shown, the electrode gas production performance testing device 100 also includes a sealing part 4, which is disposed between the two plates 12. The sealing part 4 has a connecting port 41 through which the two receiving grooves 121 are connected. This arrangement, by placing the sealing part 4 between the two plates 12, seals the gap, preventing gas leakage from the electrode and thus avoiding affecting the gas production performance testing results. Specifically, the sealing part 4 is made of an elastic material, resulting in a better sealing effect.

[0031] To prevent the two electrodes within the sealed cavity from connecting and short-circuiting, in some embodiments, such as... Figure 2 As shown, the electrode gas production performance testing device 100 further includes an insulating partition 5, which is disposed in the sealed cavity and has a first surface and a second surface facing each other, so that two electrodes can be installed at intervals on the first surface and the second surface.

[0032] Furthermore, in some embodiments, the insulating partition 5 is provided within the communication port 41. This arrangement, by placing the insulating partition 5 within the communication port 41, reduces the space occupied by the components within the housing 1.

[0033] Furthermore, in some embodiments, such as Figure 2 As shown, the two terminals 3 are respectively mounted on the two plates 12, and the insulating separator 5 is located between the two plates 12 so that the electrode pieces electrically connected to each terminal 3 can be installed in the receiving grooves 121 of the corresponding plates 12. This arrangement places the terminals 3 and the electrode pieces electrically connected to them on the same plate 12, reducing wiring difficulty and lowering wiring costs.

[0034] Because the electrode sheet is relatively thin, wrinkles or bends may occur, affecting gas production efficiency. Therefore, in some embodiments, such as... Figure 2 As shown, the electrode gas generation performance testing device 100 further includes two conductive plates 6 disposed within the sealed cavity. The two conductive plates 6 are electrically connected to the two terminals 3, respectively. The two conductive plates 6 are respectively disposed on both sides of the insulating partition 5, and each conductive plate 6 cooperates with the insulating partition 5 to form a clamping groove for the electrode to extend into and abut against. This arrangement, by pressing the electrode onto the insulating partition 5 through the conductive plates 6, ensures that the electrode remains flat and that the charge is evenly distributed on the electrode, eliminating interference from other factors and guaranteeing the normal gas generation efficiency of the electrode.

[0035] Furthermore, to make the electrode gas generation performance testing device 100 applicable to electrodes of different thicknesses, in some embodiments, such as Figure 2As shown, the electrode gas generation performance testing device 100 also includes two elastic elements 7 disposed within the sealed cavity. Each elastic element 7 is electrically connected to the terminal block 3 via a wire. One end of each elastic element 7 is connected to the inner wall of the sealed cavity, and the other end is connected to the conductive plate 6. This arrangement allows the elastic elements 7 to apply pressure to the conductive plate 6, causing the conductive plate 6 to press the electrode onto the insulating partition 5, thus making the electrode more securely fixed. Furthermore, because the elastic elements 7 are elastic, the groove formed by the conductive plate 6 and the insulating partition 5 can accommodate electrodes of various thicknesses, thereby improving the applicability of the electrode gas generation performance testing device 100.

[0036] The gas generation performance of a typical testing electrode is measured by introducing gas into a liquid and then quantitatively and qualitatively measuring the gas generation rate. To avoid liquid and gas backflow, in some embodiments, such as... Figure 1 As shown, the detection component 2 is connected to the air outlet 11 via a one-way valve 8. By setting the one-way valve 8, the gas can only be discharged and cannot flow back, thus avoiding affecting the final detection result.

[0037] Specifically, the specific structure of the detection component 2 is not limited and can be adjusted according to different detection processes. For example, in some embodiments, such as... Figure 1 As shown, the detection component 2 includes a gas tube 21, a test section 22 capable of containing liquid, and a sensor 23 capable of detecting the number of bubbles. One end of the gas tube 21 is connected to the gas outlet 11, and the other end extends into the test section 22 and is located below the liquid surface. The test section 22 is located within the detection area of ​​the sensor 23. The number of bubbles can be detected by the detection component 2, and the gas generation performance of the electrode can be quantitatively measured according to the bubble detection method. The sensor 23 can be an infrared sensor or a vision sensor.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pole piece gas generation performance detection device, characterized in that, The application relates to a battery detection device, which comprises a shell, a detection assembly and two terminal posts electrically connected with the corresponding pole pieces respectively, the two terminal posts are arranged on the shell, a sealed cavity for placing the two pole pieces is arranged in the shell, a gas outlet is arranged on the shell and communicates with the sealed cavity, and the detection assembly communicates with the sealed cavity through the gas outlet.

2. The device for detecting the gas generation performance of a pole piece according to claim 1, wherein The projection positions of the gas outlet and the two pole pieces in the vertical direction are staggered.

3. The electrode tab gas generation performance detection device according to claim 1, wherein The shell comprises two plate bodies arranged in a splicing mode, two accommodating grooves are oppositely arranged on the two plate bodies, and the two accommodating grooves can be combined to form the sealed cavity.

4. The electrode sheet gas generation performance testing device according to claim 3, wherein The application further comprises a sealing part arranged between the two plate bodies, a communication opening is arranged on the sealing part, and the two accommodating grooves communicate through the communication opening.

5. The electrode sheet gas generation performance testing device according to claim 3, wherein The application further comprises an insulating separation part arranged in the sealed cavity, the insulating separation part has opposite first and second surfaces, and the two pole pieces are arranged on the first and second surfaces.

6. The electrode sheet gas generation performance testing device according to claim 5, wherein The two terminal posts are arranged on the two plate bodies respectively, the insulating separation part is arranged between the two plate bodies, and the pole pieces electrically connected with the terminal posts are arranged in the accommodating grooves of the corresponding plate bodies.

7. The electrode tab gas generation performance detection device according to claim 5, wherein The application further comprises two conductive plates arranged in the sealed cavity, the two conductive plates are electrically connected with the two terminal posts respectively, the two conductive plates are arranged on the two sides of the insulating separation part respectively, and each conductive plate cooperates with the insulating separation part to form a clamping groove for the pole pieces to extend into and abut.

8. The electrode sheet gas generation performance detection device according to claim 7, wherein The application further comprises two elastic members arranged in the sealed cavity, each elastic member is electrically connected with the terminal post through a wire, one end of each elastic member is connected with the inner wall of the sealed cavity, and the other end is connected with the conductive plate.

9. The electrode tab gas generation performance testing device of claim 1, wherein, The detection assembly is connected with the gas outlet through a one-way valve.

10. The electrode tab gas generation performance testing device of claim 1, wherein, The detection assembly comprises a gas pipe, a test part capable of containing liquid and a sensor capable of detecting the number of bubbles, one end of the gas pipe is connected with the gas outlet, the other end extends into the test part and is below the liquid surface, and the test part is arranged in the detection area of the sensor.

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