Electrolyte infiltration test structure

Abstract

The utility model discloses an electrolyte infiltration test structure, which is convenient for experimenters to add electrolyte with the same volume for many times before and after, improves the detection frequency and reduces the error. The electrolyte infiltration test structure comprises a base, a pole piece placing frame and a support frame; a first groove is formed in the upper surface of the base; the first groove is used for containing electrolyte, and a second groove is formed around the first groove; the pole piece placing rack is hung above the first groove through the support frame, the lower end of the pole piece placing rack is positioned in the first groove, and a fixing groove for placing a pole piece is formed in the pole piece placing rack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to an electrolyte infiltration test structure. Background Art

[0002] The electrolyte infiltration rate of the pole piece or diaphragm has a great influence on the performance of the battery: when the electrolyte infiltration rate is low, it is easy to cause the ion transmission path to become longer, hindering the ion from shuttling between the positive and negative pole pieces; and the position on the pole piece that is not infiltrated by the electrolyte will not be able to participate in the electrochemical reaction of the battery; at the same time, the battery interface resistance increases, affecting the battery's rate performance, discharge capacity and service life. However, the electrolyte infiltration rate of pole pieces or diaphragms with different material systems and different process parameters must be different, so accurately detecting the electrolyte infiltration rate of a specific pole piece or diaphragm is helpful for reasonable battery design and performance improvement.

[0003] One of the traditional methods for detecting the electrolyte infiltration rate is the liquid absorption method, which calculates the electrolyte infiltration rate by measuring the diffusion area of ​​the electrolyte on the electrode or diaphragm per unit time. In the prior art, the electrolyte is usually contained in a container with a scale, and then the electrode / diaphragm is partially immersed in the electrolyte, and then observation and recording are started. When multiple tests are required, in order to ensure the uniformity of variables, each time the electrolyte is added to the container, it is necessary to measure accurately and the same volume, which is cumbersome to operate, and it is all manual observation with the naked eye and manual measurement, which inevitably leads to errors. The higher the accuracy required for the experiment, the greater the influence of human factors, resulting in low detection accuracy and high labor intensity. Utility Model Content

[0004] The utility model aims to provide an electrolyte infiltration test structure to solve the problems existing in the prior art, facilitate experimenters to add the same volume of electrolyte multiple times, increase the frequency of detection and reduce errors.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] An electrolyte infiltration test structure comprises a base, a pole piece placement frame and a support frame; a first groove is arranged on the upper surface of the base; the first groove is used to contain electrolyte, and a second groove is arranged around the first groove; the pole piece placement frame is suspended above the first groove through the support frame, and its lower end is located in the first groove, and a fixing groove for placing the pole piece is arranged.

[0007] A flow guiding slope is arranged between the first groove and the second groove, the high point of the flow guiding slope is located on the side wall of the first groove, and the low point of the flow guiding slope is located on the side wall of the second groove.

[0008] The support frame includes a front plate, left and right side plates, a back plate and a top plate; the left and right side plates are integrally connected to the two sides of the back plate; the two sides of the front plate are relatively fixed to the side plates; the top plate is relatively fixed to the top of the front plate, the side plates and the back plate; the top of the pole piece placement frame is relatively fixed to the lower surface of the top plate.

[0009] Preferably, at least the front plate and the back plate of the support frame are made of transparent material.

[0010] Preferably, a ruler is installed on the pole piece placement rack.

[0011] Preferably, a light-transmitting window is provided in the fixing groove, and the light-transmitting window penetrates to the back side of the pole piece placement rack.

[0012] Preferably, a guide groove is provided at the upper end of the side plate, and guide plates that are slidably fitted in the guide groove are provided at two wings at the upper end of the pole piece placement frame.

[0013] Both ends of the base are provided with limit clamps, and the limit clamps are used to fix the lower end of the support frame.

[0014] Preferably, the opposite surfaces of the limiting clamp blocks are provided with limiting grooves for the side edges of the supporting frame to be embedded.

[0015] After adopting the above technical solution, the utility model has the following technical effects:

[0016] The utility model provides a second groove around the first groove, and the first groove is used as a container for holding electrolyte. Before starting the detection experiment, the experimenter does not need to pay special attention to the amount of electrolyte added when adding electrolyte. It only needs to fill the first groove, and the overflowed electrolyte will flow into the second groove. Therefore, it can be ensured that the volume of the electrolyte is equal to the volume of the first groove during each detection, that is, the amount of electrolyte in the previous and subsequent experiments remains uniform, and the detection accuracy is ensured not to be affected by human factors, especially the amount of added electrolyte; since there is no need to measure the electrolyte specifically, the operating burden on the experimenter is reduced, and the efficiency of the detection experiment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0018] Figure 2 It is an exploded view of a specific embodiment of the utility model;

[0019] Figure 3 It is a cross-sectional view of a specific embodiment of the utility model;

[0020] Figure 4 A three-dimensional diagram of a base of a specific embodiment of the utility model;

[0021] Figure 5 A cross-sectional view of a base according to a specific embodiment of the utility model;

[0022] Description of Figure Numbers:

[0023] 1-base; 11-first groove; 12-second groove; 13-guiding slope;

[0024] 2-pole placement rack; 21-fixing slot; 211-light-transmitting window; 22-guide plate;

[0025] 3-support frame; 31-front plate; 32-side plate; 321-guide groove; 33-back plate; 34-top plate;

[0026] 4-Ruler;

[0027] 5-limiting clamp; 51-limiting slot;

[0028] 6-Fixed seat. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0030] refer to Figures 1 to 5 As shown, the utility model discloses an electrolyte infiltration test structure, including a base 1, a pole piece placement frame 2 and a support frame 3;

[0031] A first groove 11 is provided in the middle of the upper surface of the base 1; the first groove 11 is used to contain electrolyte, and a second groove 12 is provided around the first groove 11;

[0032] The pole piece placement frame 2 is suspended above the first groove 11 through the support frame 3, and its lower end is located in the first groove 11, and is provided with a fixing groove 21 for placing the pole piece.

[0033] Through the above scheme, the utility model sets the second groove 12 around the first groove 11, and the first groove 11 is used as a container for holding electrolyte. Before starting the detection experiment, the experimenter does not need to pay special attention to the amount of electrolyte added when adding electrolyte. It is only necessary to fill the first groove 11. The overflowing electrolyte will flow into the second groove 12, so that it can be ensured that the volume of the electrolyte is equal to the volume of the first groove 11 during each detection, that is, the amount of electrolyte in the previous and subsequent experiments remains uniform, ensuring that the detection accuracy is not affected by human factors, especially the amount of added electrolyte; since there is no need to measure the electrolyte specifically, the operating burden for the experimenter is reduced, and the efficiency of the detection experiment is improved.

[0034] Specific embodiments of the present utility model are shown below.

[0035] A guide slope 13 is provided between the first groove 11 and the second groove 12, the high point of the guide slope 13 is located at the side wall of the first groove 11, and the low point of the guide slope is located at the side wall of the second groove 12. The electrolyte overflowing from the first groove 11 can be guided to the second groove 12 by the guide slope 13, so that it will not be retained at the edge of the first groove 11, ensuring that the electrolyte level in the first groove 11 is flush with the opening of the first groove 11 after the electrolyte is filled.

[0036] The support frame 3 includes a front plate 31, left and right side plates 32, a back plate 33 and a top plate 34; the left and right side plates 32 are integrally connected to the two sides of the back plate 33 to form an integral U-shaped structure; the two sides of the front plate 31 are relatively fixed to the side plates 32 by means of screw locking or the like; the top plate 34 is relatively fixed to the top of the front plate 31, the side plates 32 and the back plate 33 by means of screw locking or the like; the top of the electrode placement frame 2 is relatively fixed to the lower surface of the top plate 34 by means of screw locking or the like. As a result, the support frame 3 as a whole is a closed structure covered above the base 1, which can reduce the volatilization of the electrolyte into the environment, avoid polluting the environment and harming the health of the experimenters.

[0037] Furthermore, at least the front plate 31 and the back plate 33 of the support frame 3 are made of transparent materials, which is convenient for observing the wetting condition of the electrode. In this embodiment, a ruler 4 is installed on the electrode placement frame 2, which is convenient for the experimenter to intuitively understand the numerical value corresponding to the wetting condition of the electrode; a light-transmitting window 211 is provided in the fixing groove 21, and the light-transmitting window 211 penetrates to the back of the electrode placement frame 2 to achieve light transmission, making it easier to observe the wetting condition of the electrode.

[0038] At the same time, a guide groove 321 is provided at the upper end of the above-mentioned side plate 32, and guide plates 22 are provided on the upper wings of the pole piece placement rack 2, which slide and fit in the guide groove 321. After the pole piece placement rack 2 is installed, its shaking can be effectively avoided, ensuring that the relative position of the pole piece on the pole piece placement rack 2 and the first groove 11 remains stable.

[0039] Both ends of the base 1 are provided with limit clamps 5, which are used to fix the lower end of the support frame 3, so as to achieve plug-in fit of the support frame 3 on the base 1, and facilitate assembly and disassembly. In this embodiment, the opposite surfaces of the limit clamps 5 are provided with limit grooves 51 for the side edges of the support frame 3 to be embedded.

[0040] The utility model further comprises a fixing base 6 for fixing the base 1, and the overall structure consisting of the base 1, the pole piece placement frame 2 and the support frame 3 can be fixed on the detection equipment.

[0041] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An electrolyte infiltration test structure, characterized in that: It includes a base, a pole piece placement frame and a support frame; The upper surface of the base is provided with a first groove; the first groove is used to contain electrolyte, and a second groove is arranged around the first groove; The pole piece placement frame is suspended above the first groove through the support frame, and its lower end is located in the first groove and is provided with a fixing groove for placing the pole piece.

2. The electrolyte infiltration test structure according to claim 1, characterized in that: A flow guiding slope is arranged between the first groove and the second groove, the high point of the flow guiding slope is located on the side wall of the first groove, and the low point of the flow guiding slope is located on the side wall of the second groove.

3. The electrolyte infiltration test structure according to claim 1, characterized in that: The support frame includes a front plate, left and right side plates, a back plate and a top plate; the left and right side plates are integrally connected to the two sides of the back plate; the two sides of the front plate are relatively fixed to the side plates; the top plate is relatively fixed to the top of the front plate, the side plates and the back plate; the top of the pole piece placement frame is relatively fixed to the lower surface of the top plate.

4. The electrolyte infiltration test structure according to claim 3, characterized in that: At least the front plate and the back plate of the support frame are made of transparent material.

5. The electrolyte infiltration test structure according to claim 4, characterized in that: A ruler is installed on the pole piece placement rack.

6. The electrolyte infiltration test structure according to claim 4, characterized in that: A light-transmitting window is arranged in the fixing groove, and the light-transmitting window penetrates to the back side of the pole piece placement frame.

7. The electrolyte infiltration test structure according to claim 3, characterized in that: The upper end of the side plate is provided with a guide groove, and the upper two wings of the pole piece placement frame are provided with guide pieces that are slidably matched in the guide groove.

8. The electrolyte infiltration test structure according to claim 1, characterized in that: Both ends of the base are provided with limit clamps, and the limit clamps are used to fix the lower end of the support frame.

9. The electrolyte infiltration test structure according to claim 8, characterized in that: The opposite surfaces of the limiting clamp blocks are provided with limiting grooves for the side edges of the supporting frame to be embedded.

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