Simple full battery testing device

Abstract

The utility model provides a simple total battery testing device, and belongs to the field of lithium batteries. The device comprises a box body, a box cover, a battery assembly and a rotating screw, the box cover covers the box body, the battery assembly comprises a positive plate, a negative plate and a diaphragm, the positive plate, the negative plate and the diaphragm are laid in the box body, the diaphragm is arranged between the positive plate and the negative plate, two outer connecting holes are formed in one side of the box body, and the rotating screw is arranged in the box body. The two outer connecting holes are respectively and electrically connected with the positive plate and the negative plate, the box cover is provided with a mounting hole along the vertical direction, the rotating screw penetrates through the mounting hole and compresses the battery assembly at the bottom in the box body, the box cover is provided with an air inlet and outlet connecting port, and the air inlet and outlet connecting port is communicated with the interior of the box body. By adopting the simple full battery testing device provided by the embodiment of the utility model, the problem of low testing efficiency caused by complicated operation in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of lithium batteries, in particular to a simple full-battery testing device. Background Art

[0002] With the rapid development of lithium batteries, they are now used in consumer electronics, electric vehicles, power tools, energy storage, aerospace, and other fields. With the mass production and application of lithium batteries, testing of various aspects of lithium batteries has become an important process in the production process, among which the detection of gases generated inside the battery is particularly important.

[0003] In the prior art, the detection of gas generated inside batteries is usually carried out by sampling and testing finished batteries. This requires drilling holes in the finished batteries and introducing gas detection devices to simulate working conditions. This method damages the finished batteries, making them impossible to reuse. It also requires drilling holes, installing wiring, and other work, making the test equipment more complicated.

[0004] The battery testing device in the prior art is relatively complicated to operate, resulting in low testing efficiency. Utility Model Content

[0005] The present invention provides a simple full-battery test device that can solve the problem of low test efficiency caused by complicated operation in the prior art. The technical solution is as follows:

[0006] A simple full battery test device, including: a box body, a box cover, a battery assembly and a rotating screw.

[0007] The box cover is arranged on the box body, and the battery assembly includes a positive electrode sheet, a negative electrode sheet and a diaphragm. The positive electrode sheet, the negative electrode sheet and the diaphragm are flatly arranged in the box body, and the diaphragm is arranged between the positive electrode sheet and the negative electrode sheet. Two external connection holes are provided on one side of the box body, and the two external connection holes are electrically connected to the positive electrode sheet and the negative electrode sheet respectively. The box cover is provided with a mounting hole in the vertical direction, and the rotating screw is passed through the mounting hole and presses the battery assembly to the bottom of the box body. The box cover is provided with an air inlet and outlet connection port, and the air inlet and outlet connection port is communicated with the inside of the box body.

[0008] Optionally, a mounting groove is provided at the bottom of the box body, and the battery assembly matches the mounting groove.

[0009] Optionally, a liquid injection port is provided on the box cover, and the liquid injection port is located above the battery assembly.

[0010] Optionally, an air pressure connection port is provided on the box cover, and the air pressure connection port is communicated with the interior of the box body.

[0011] Optionally, the box body and the box cover are detachably connected by screws, and the screws are arranged at four corners of the box cover.

[0012] Optionally, a rubber gasket is provided at the bottom of the rotating screw.

[0013] Optionally, a pressing plate is further included, which is arranged above the battery assembly, and the bottom of the rotating screw is in contact with the pressing plate.

[0014] Optionally, the battery assembly further includes a copper wire, two diaphragms are provided, the copper wire is clamped between the two diaphragms, and the copper wire is electrically connected to the rotating screw.

[0015] The beneficial effects of the technical solution provided by the embodiment of the utility model include at least:

[0016] The present invention provides a simple full-battery testing device, which stacks the positive electrode sheet, diaphragm, and negative electrode sheet in sequence in a box body, and connects the positive electrode sheet and negative electrode sheet to two external connection holes respectively. After the electrolyte is dripped onto the battery assembly, the box cover is placed on the box body, and the rotating screw is adjusted to tighten the battery assembly to prevent the battery assembly from shaking. The external connection hole is connected to an external power supply to complete the circuit connection and simulate the working state of the battery. The air inlet and outlet connection ports are connected to an external gas detection device to detect the gas composition generated when the battery is working. Through this device, the working state of the battery can be simulated to detect the gas composition generated when the battery is working. It is simple to operate and can be reused, which can effectively solve the problem of low test efficiency caused by complex operation in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the box cover provided by an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the entire device provided by an embodiment of the utility model, with the cover removed, viewed from above;

[0021] Figure 4This is a schematic diagram of a front cross-section of the box body and the battery assembly provided by an embodiment of the present utility model;

[0022] Figure 5 This is a cross-sectional schematic diagram of another battery assembly and rotating screw provided by an embodiment of the present utility model.

[0023] In the figure: 1-box body; 11-external connection hole; 12-mounting slot; 2-box cover; 21-mounting hole; 22-inlet and outlet air connection ports; 23-liquid filling port; 24-air pressure connection port; 3-battery assembly; 31-positive electrode sheet; 32-negative electrode sheet; 33-diaphragm; 34-copper wire; 4-rotating screw; 41-rubber gasket; 5-screw; 6-pressing plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model; Figure 2 This is a schematic diagram of the top view of the box cover provided by an embodiment of the utility model; Figure 3 This is a schematic diagram of the structure of the entire device provided by an embodiment of the utility model, with the cover removed, viewed from above; Figure 4 This is a schematic diagram of a front cross-section of the box body and the battery assembly provided by an embodiment of the present utility model; Figure 5 This is a cross-sectional diagram of another battery assembly and a rotating screw provided by an embodiment of the present invention. Figures 1 to 5 A simple full-battery testing device shown in the figure includes: a box body 1, a box cover 2, a battery assembly 3 and a rotating screw 4. The box cover 2 is covered on the box body 1. The battery assembly 3 includes a positive electrode sheet 31, a negative electrode sheet 32 ​​and a diaphragm 33. The positive electrode sheet 31, the negative electrode sheet 32 ​​and the diaphragm 33 are laid flat in the box body 1. The diaphragm 33 is arranged between the positive electrode sheet 31 and the negative electrode sheet 32. Two external connection holes 11 are provided on one side of the box body 1. The two external connection holes 11 are electrically connected to the positive electrode sheet 31 and the negative electrode sheet 32 ​​respectively. The box cover 2 is provided with a mounting hole 21 in the vertical direction. The rotating screw 4 is passed through the mounting hole 21 and presses the battery assembly 3 to the bottom of the box body 1. The box cover 2 is provided with an air inlet and outlet connection port 22, which is connected to the inside of the box body 1.

[0026] For example, in an embodiment of the present invention, a diaphragm 33 is first arranged between the positive electrode sheet 31 and the negative electrode sheet 32 ​​to form a battery assembly 3, and the battery assembly 3 is placed inside the box body 1. Both the positive electrode sheet 31 and the negative electrode sheet 32 ​​are provided with tabs, and each external connection hole 11 is connected to an electrical clamp through a wire. The tabs of the positive electrode sheet 31 and the negative electrode sheet 32 ​​are clamped by two electrical clamps respectively, so that the positive electrode sheet 31 and the negative electrode sheet 32 ​​can be connected to the external circuit, and then an appropriate amount of electrolyte is dripped onto the battery assembly 3, and the box cover 2 is placed on the box body 1, the rotating screw 4 is adjusted to press the battery assembly 3 to the bottom of the box body 1, and the external connection hole 11 is connected to the external power supply, so that the battery assembly 3 simulates a working state. When operating, the battery assembly 3 generates gas, which is connected to an external gas detection system via the inlet and outlet ports 22. This allows the composition of the gas generated by the operating battery assembly 3 to be measured. By analyzing the gas composition, the suitability of the positive electrode sheets 31 and negative electrode sheets 32, made of different battery materials, can be determined, thereby ensuring the safety and efficiency of the assembled battery. After testing a set of battery assemblies 3, the battery assemblies inside the box body 1 can be removed and cleaned, and then replaced with another set of battery assemblies 3 made of different materials for the next test. This allows the device to be reused.

[0027] The embodiment of the present invention provides a simple full-battery testing device, in which the positive electrode sheet 31, the diaphragm 33, and the negative electrode sheet 32 ​​are stacked in sequence in the box body 1, and the positive electrode sheet 31 and the negative electrode sheet 32 ​​are respectively connected to the two external connection holes 11. After the electrolyte is dripped onto the battery assembly 3, the box cover 2 is placed on the box body 1, and the rotating screw 4 is adjusted to press the battery assembly 3 to prevent the battery assembly 3 from shaking. The external connection hole 11 is connected to an external power supply to complete the circuit connection and simulate the working state of the battery. The inlet and outlet gas connection ports 22 are connected to an external gas detection device to detect the gas composition generated when the battery is working. Through this device, the working state of the battery can be simulated to detect the gas composition generated when the battery is working. The operation is simple and reusable, which can effectively solve the problem of low test efficiency caused by the complicated operation in the prior art.

[0028] Optionally, a mounting groove 12 is provided at the bottom of the box body 1 , and the battery assembly 3 matches the mounting groove 12 .

[0029] For example, in an embodiment of the present invention, the battery assembly 3 is limited by setting the installation groove 12, so that the battery assembly 3 is more firmly fixed in the box body 1, and the battery assembly 3 can be more stable when in working state, so that the test results are more accurate, thereby improving the stability of the device.

[0030] Optionally, a liquid injection port 23 is provided on the box cover 2, and the liquid injection port 23 is located above the battery assembly.

[0031] For example, in an embodiment of the present invention, by providing a liquid injection port 23, electrolyte can be added from the liquid injection port 23 after the box cover 2 is placed on the box cover 2, or additional electrolyte can be added during the reaction process to prevent insufficient amount of electrolyte added before the test begins, thereby improving the operational convenience of the device.

[0032] Optionally, an air pressure connection port 24 is provided on the box cover 2 , and the air pressure connection port 24 is communicated with the interior of the box body 1 .

[0033] For example, in an embodiment of the present invention, by setting an air pressure connection port 24, the air pressure connection port 24 can be connected to an external air pressure detection device, so as to measure the change of the air pressure inside the box body 1, thereby assisting in analyzing the gas generation of the battery assembly 3 in the working state, thereby ensuring the safety and efficiency of the assembled finished battery.

[0034] Optionally, the box body 1 and the box cover 2 are detachably connected by screws 5 , and the screws 5 are set at the four corners of the box cover 2 .

[0035] For example, in an embodiment of the present invention, by setting screws 5, the box body 1 and the box cover 2 are detachably connected, which makes it convenient for the operator to separate the box body 1 and the box cover 2 to install internal components or clean the interior. On the other hand, when simulating the working state of the battery, by setting screws 5, the overall device can be made more stable, thereby further improving the operational convenience of the device.

[0036] Optionally, a rubber gasket 41 is provided at the bottom of the rotating screw 4 .

[0037] For example, in an embodiment of the present invention, by providing a rubber gasket 41 at the bottom of the rotating screw 4, on the one hand, the rotating screw 4 can be insulated and isolated from the battery assembly 3, and on the other hand, the rotating screw 4 can be prevented from wearing the battery assembly 3 during the process of pressing the battery assembly 3, thereby affecting the test results, thereby improving the accuracy of the test results of the device.

[0038] Optionally, a pressing plate 6 is further included, which is arranged above the battery assembly 3, and the bottom of the rotating screw 4 contacts the pressing plate 6.

[0039] For example, in an embodiment of the present utility model, by setting a clamping plate 6, the positive electrode sheet 31, the negative electrode sheet 32 ​​and the diaphragm 33 can be pressed against the bottom of the box body 1, and then the rotating screw 4 applies a clamping force to the clamping plate 6, so that the clamping force received by the battery assembly 3 is converted from point contact to surface contact, further improving the stability of the device.

[0040] Optionally, the battery assembly 3 further includes a copper wire 34 . Two diaphragms 33 are provided. The copper wire 34 is clamped between the two diaphragms 33 . The copper wire 34 is electrically connected to the rotating screw 4 .

[0041] For example, in an embodiment of the present invention, by providing a copper wire 34 and connecting the copper wire 34 to the rotating screw 4, the rotating screw forms a third electrode of the device in addition to the positive electrode and the negative electrode, thereby forming a three-electrode structure of the device, and further enabling the device to perform relevant measurements on the three-electrode battery structure. By adding the copper wire 34, the versatility of the device is improved.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The terms "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A simple full battery test device, characterized in that: include: Box body (1), box cover (2), battery assembly (3) and rotating screw (4), The box cover (2) is placed on the box body (1); the battery assembly (3) comprises a positive electrode sheet (31), a negative electrode sheet (32) and a diaphragm (33); the positive electrode sheet (31), the negative electrode sheet (32) and the diaphragm (33) are arranged flat in the box body (1); the diaphragm (33) is arranged between the positive electrode sheet (31) and the negative electrode sheet (32); one side of the box body (1) is provided with two external connection holes (11); The external connection holes (11) are electrically connected to the positive electrode sheet (31) and the negative electrode sheet (32) respectively. The box cover (2) is provided with a mounting hole (21) in the vertical direction. The rotating screw (4) is passed through the mounting hole (21) and presses the battery assembly (3) against the bottom of the box body (1). The box cover (2) is provided with an air inlet and outlet connection port (22), and the air inlet and outlet connection port (22) is connected to the interior of the box body (1).

2. The simple full battery test device according to claim 1, characterized in that: The bottom of the box body (1) is provided with a mounting groove (12), and the battery assembly (3) matches the mounting groove (12).

3. The simple full battery test device according to claim 1, characterized in that: The box cover (2) is provided with a liquid injection port (23), and the liquid injection port (23) is located above the battery assembly.

4. The simple full battery test device according to claim 1, characterized in that: The box cover (2) is provided with an air pressure connection port (24), and the air pressure connection port (24) is communicated with the interior of the box body (1).

5. The simple full battery test device according to claim 1, characterized in that: The box body (1) and the box cover (2) are detachably connected via screws (5), and the screws (5) are arranged at the four corners of the box cover (2).

6. The simple full battery test device according to claim 1, characterized in that: A rubber gasket (41) is provided at the bottom of the rotating screw (4).

7. The simple full battery test device according to claim 1, characterized in that: It also includes a pressing plate (6), which is arranged above the battery assembly (3), and the bottom of the rotating screw (4) is in contact with the pressing plate (6).

8. The simple full battery test device according to claim 1, characterized in that: The battery assembly (3) further includes a copper wire (34). Two diaphragms (33) are provided. The copper wire (34) is clamped between the two diaphragms (33). The copper wire (34) is electrically connected to the rotating screw (4).

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