Square shell battery cell overcharge simulation protection tool

Abstract

The utility model provides a square shell cell overcharge simulation protection tool, which comprises a box body, a top cover arranged at the top of the box body, first heat insulation cotton arranged in the box body, a first detection groove arranged on the first heat insulation cotton, a first connection plate arranged in the first detection groove, a first top pressure sensor arranged at the top end of the first detection groove, and a second top pressure sensor arranged at the bottom end of the first detection groove, a first side pressure sensor is arranged in the first detection groove, a first bottom pressure sensor is arranged on the first connecting plate, and a first camera is arranged above the first detection groove; the single battery cells are limited through components such as heat insulation cotton, the battery cells are prevented from expanding, meanwhile, temperature and gas production detection is conducted through a temperature sensor and a pressure sensor, the temperature and gas production of the battery cells in all stages of overcharging can be detected in real time, an alarm can be given when the temperature or pressure is too high, a user can be reminded, and the safety of the user can be protected; the pressure sensors are arranged at the top end, the large face and the side face in the tool, and the detection effect is good.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and more specifically, to an overcharge simulation protection tool for square-shell battery cells. Background Technology

[0002] In electric vehicles, energy storage systems, and other electronic devices, batteries serve as the core energy storage unit, and their safety and reliability are crucial for the normal operation of the entire system. Battery failure early warning technology, as one of the key technologies for ensuring battery safety, has received widespread attention and research in recent years; however, some shortcomings and deficiencies exist in battery failure analysis.

[0003] The following problems exist in the existing technology:

[0004] Existing battery cells are typically exposed when undergoing overcharge simulation tests. After an overcharge failure, the cell body is prone to bulging, posing a risk of the cell casing cracking. It may also spray electrolyte, emit smoke, and catch fire, resulting in poor safety. Furthermore, it is impossible to detect the gas generation during overcharging.

[0005] Therefore, this application provides an overcharge simulation protection fixture for square-shell battery cells to solve the above problems. Utility Model Content

[0006] The purpose and effect of this utility model are achieved by the following specific technical means: a square-shell battery cell overcharge simulation protection fixture, including a housing, the top of which is provided with a top cover, and further including:

[0007] The first heat insulation cotton is disposed inside the box body. The first heat insulation cotton is provided with a first detection groove. The first detection groove is provided with a first connecting plate. The top of the first detection groove is provided with a first top pressure sensor. The first detection groove is provided with a first side pressure sensor. The first connecting plate is provided with a first bottom pressure sensor. The first detection groove is provided with a first camera.

[0008] The second heat insulation cotton is located inside the box body. The second heat insulation cotton is provided with a second detection groove. The second detection groove is provided with a second connecting plate. The top of the second detection groove is provided with a second top pressure sensor. The second detection groove is provided with a second side pressure sensor. The second connecting plate is provided with a second bottom sensor. The second detection groove is provided with a second camera.

[0009] More preferably, the top cover has an exhaust hole at its top, the side of the housing has a first interface, and a second interface is provided on one side of the first interface.

[0010] More preferably, the front of the enclosure is provided with a control panel, which includes an alarm light, an on / off switch, and a power off switch.

[0011] More preferably, a first temperature sensor is provided on one side of the first detection groove, and a first transformer is provided on one side of the first heat insulation cotton. The first transformer is electrically connected to the first temperature sensor, the first top pressure sensor, the first connecting plate, the first side pressure sensor, the first bottom pressure sensor, and the first camera.

[0012] More preferably, a second temperature sensor is provided on one side of the second detection groove, and a second transformer is provided on one side of the second heat insulation cotton. The second transformer is electrically connected to the second temperature sensor, the second top pressure sensor, the second connecting plate, the second side pressure sensor, the second bottom sensor, and the second camera.

[0013] More preferably, the first side pressure sensor is embedded inside the first heat insulation cotton, and the first bottom pressure sensor is embedded inside the first connecting plate.

[0014] More preferably, the second side pressure sensor is embedded inside the second heat insulation cotton, and the second bottom pressure sensor is embedded inside the second connecting plate.

[0015] More preferably, the first connecting plate has two round holes on both sides of the first bottom pressure sensor, and the two round holes are embedded in the first connecting plate.

[0016] More preferably, the second connecting plate has two round holes on both sides of the second bottom pressure sensor, and the two round holes are embedded in the second connecting plate.

[0017] The beneficial effects of this utility model are:

[0018] The individual battery cells are limited by components such as heat insulation cotton to prevent them from expanding. Temperature and gas production are detected by temperature and pressure sensors. The temperature and gas production of the cells can be monitored in real time at each stage of overcharging. An alarm will be triggered when the temperature or pressure is too high to alert the user and protect their safety. The pressure sensors are located on the top, large surface and side inside the tooling, providing good detection results. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a square-shell battery cell failure protection tooling;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle box;

[0021] Figure 3 for Figure 1 Top view of the internal structure of the middle box;

[0022] Figure 4 for Figure 1 A three-dimensional schematic diagram of the internal structure of the middle box;

[0023] Figure 5 for Figure 1 Schematic diagram of the bottom structure of the top cover.

[0024] In the diagram: 1. Housing; 2. Top cover; 3. Vent; 4. First interface; 5. Second interface; 6. Control panel; 7. Alarm light; 8. Power switch; 9. Power off switch; 10. First insulation cotton; 11. Second insulation cotton; 12. First detection slot; 13. Second detection slot; 14. First connecting plate; 15. Second connecting plate; 16. First temperature sensor; 17. Second temperature sensor; 18. First transformer; 19. Second transformer; 20. First top pressure sensor; 21. First side pressure sensor; 22. First bottom pressure sensor; 23. Second top pressure sensor; 24. Second side pressure sensor; 25. Second bottom sensor; 26. First camera; 27. Second camera. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, detailed descriptions of specific embodiments are provided. The following embodiments are merely examples of implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the scope of this utility model are within the patent protection scope of this utility model.

[0026] A square-shell battery cell overcharge simulation protection fixture includes a housing 1, a top cover 2 on the top of the housing 1, and the housing 1 is an insulated housing 1 to prevent leakage of the battery cell during overcharge detection.

[0027] The first heat insulation cotton 10 is located inside the box 1. The heat insulation cotton can isolate the external heat from affecting the battery cell being tested, making the test data more accurate. The first heat insulation cotton 10 is provided with a first detection slot 12. The battery cell to be tested is inserted into the first detection slot 12. Conventional battery cells or overcharged battery cells can be placed in the first detection slot 12 to form an experimental group and a control group, which is highly practical.

[0028] The first detection slot 12 is equipped with a first connecting plate 14 inside, which can support the bottom of the test cell. The top of the first detection slot 12 is equipped with a first top pressure sensor 20, the inside of the first detection slot 12 is equipped with a first side pressure sensor 21, and the first connecting plate 14 is equipped with a first bottom pressure sensor 22. The pressure sensors are set at the top, bottom and large surface of the test cell, and can calculate the amount of gas produced based on the pressure generated in the box 1 when gas is produced. The first detection slot 12 is equipped with a first camera 26 above it, through which the condition of the test cell in the first detection slot 12 can be observed.

[0029] The second heat insulation cotton 11 is located inside the box 1. The heat insulation cotton can isolate the external heat from affecting the battery cell being tested, making the test data more accurate. The second heat insulation cotton 11 is provided with a second detection slot 13. The battery cell to be tested is inserted into the second detection slot 13. Conventional battery cells or overcharged battery cells can be placed in the second detection slot 13 to form an experimental group and a control group, which is highly practical.

[0030] The second detection slot 13 is equipped with a second connecting plate 15, which can support the bottom of the test cell. The top of the second detection slot 13 is equipped with a second top pressure sensor 23, the inside of the second detection slot 13 is equipped with a second side pressure sensor 24, and the second connecting plate 15 is equipped with a second bottom pressure sensor 25. The pressure sensors are set at the top, bottom and large surface of the test cell to calculate the amount of gas produced based on the pressure generated in the chamber 1 when gas is produced. The second detection slot 13 is equipped with a second camera 27, which can be used to observe the condition of the test cell in the second detection slot 13.

[0031] The individual battery cells are limited by components such as heat insulation cotton to prevent them from expanding. Temperature and gas production are detected by temperature and pressure sensors. The temperature and gas production of the cells can be monitored in real time at each stage of overcharging. An alarm will be triggered when the temperature or pressure is too high to alert the user and protect their safety. The pressure sensors are located on the top, large surface and side inside the tooling, providing good detection results.

[0032] The top of the top cover 2 is provided with an exhaust hole 3. When the air pressure inside the box 1 is too high, the exhaust hole 3 can be broken to release the air, which can prevent the box 1 from exploding due to excessive air pressure. The side of the box 1 is provided with a first interface 4, and a second interface 5 is provided on one side of the first interface 4. The first interface 4 and the second interface 5 are connected to an external power source, and the internal components of the box 1 are electrically driven through an external battery cell.

[0033] The front of the housing 1 is equipped with a control panel 6. Users can operate the battery box by using the control panel 6. The control panel 6 is equipped with an alarm 7, an on / off switch 8, and a power off switch 9. When the internal temperature of the housing 1 is too high, the alarm 7 will light up to warn the user. Users can turn the battery box on or off by using the on / off switch 8 and the power off switch 9 on the control panel 6.

[0034] A first temperature sensor 16 is provided on one side of the first detection slot 12. The temperature sensor can sense the temperature inside the chamber 1 in real time. When the temperature is too high, it will transmit information to the control panel 6 to trigger an alarm 7. A first transformer 18 is provided on one side of the first insulation cotton 10. The first transformer 18 is electrically connected to the first temperature sensor 16, the first top pressure sensor 20, the first connecting plate 14, the first side pressure sensor 21, the first bottom pressure sensor 22 and the first camera 26, so that the voltage can be adjusted according to the voltage required for testing the battery cell and the voltage required for other components.

[0035] A second temperature sensor 17 is provided on one side of the second detection slot 13. The temperature sensor can sense the temperature inside the chamber 1 in real time. When the temperature is too high, it will transmit information to the control panel 6 to trigger an alarm 7. A second transformer 19 is provided on both sides of the second heat insulation cotton 11. The second transformer 19 is electrically connected to the second temperature sensor 17, the second top pressure sensor 23, the second connecting plate 15, the second side pressure sensor 24, the second bottom pressure sensor 25, and the second camera 27, so that the voltage required for testing the battery cell and the voltage required for other components can be adjusted separately.

[0036] The first side pressure sensor 21 is embedded inside the first heat insulation cotton 10, and the first bottom pressure sensor 22 is embedded inside the first connecting plate 14, so that the test cell in the first detection slot 12 can be detected from three sides, which can effectively improve the accuracy of the test.

[0037] The second side pressure sensor 24 is embedded inside the second heat insulation cotton 11, and the second bottom pressure sensor 25 is embedded inside the second connecting plate 15, so that the test cell in the second detection slot 13 can be detected from three sides, which can effectively improve the accuracy of the test.

[0038] The first connecting plate 14 has two round holes on both sides of the first bottom pressure sensor 22. The two round holes are embedded in the first connecting plate 14. The two round holes on the first connecting plate 14 are connected to the positive terminal and the negative terminal respectively, realizing the series and parallel connection of the test cell, and enabling the continuous charging function of the test cell.

[0039] The second connecting plate 15 has two round holes on both sides of the second bottom pressure sensor 25. The two round holes are embedded in the second connecting plate 15. The two round holes on the second connecting plate 15 are connected to the positive terminal and the negative terminal respectively, realizing the series and parallel connection of the test cell, and enabling the continuous charging function of the test cell.

Claims

1. A square-shell battery cell overcharge simulation protection fixture, comprising a housing, wherein the top of the housing is provided with a top cover, characterized in that, Also includes: The first heat insulation cotton is provided inside the box body. The first heat insulation cotton is provided with a first detection groove. The first detection groove is provided with a first connecting plate. The top of the first detection groove is provided with a first top pressure sensor. The first detection groove is provided with a first side pressure sensor. The first connecting plate is provided with a first bottom pressure sensor. The first detection groove is provided with a first camera. The second heat insulation cotton is located inside the box body. The second heat insulation cotton is provided with a second detection groove. The second detection groove is provided with a second connecting plate. The top of the second detection groove is provided with a second top pressure sensor. The second detection groove is provided with a second side pressure sensor. The second connecting plate is provided with a second bottom sensor. The second detection groove is provided with a second camera.

2. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The top of the cover is provided with an exhaust hole, the side of the box is provided with a first interface, and a second interface is provided on one side of the first interface.

3. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The front of the enclosure is equipped with a control panel, which includes an alarm light, an on / off switch, and a power off switch.

4. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: A first temperature sensor is provided on one side of the first detection slot, and a first transformer is provided on one side of the first heat insulation cotton. The first transformer is electrically connected to the first temperature sensor, the first top pressure sensor, the first connecting plate, the first side pressure sensor, the first bottom pressure sensor, and the first camera.

5. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: A second temperature sensor is provided on one side of the second detection slot, and a second transformer is provided on one side of the second insulation cotton. The second transformer is electrically connected to the second temperature sensor, the second top pressure sensor, the second connecting plate, the second side pressure sensor, the second bottom sensor, and the second camera.

6. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The first side pressure sensor is embedded inside the first heat insulation cotton, and the first bottom pressure sensor is embedded inside the first connecting plate.

7. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The second side pressure sensor is embedded inside the second insulation cotton, and the second bottom sensor is embedded inside the second connecting plate.

8. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The first connecting plate has two round holes on both sides of the first bottom pressure sensor, and the two round holes are embedded in the first connecting plate.

9. The overcharge simulation protection fixture for square-shell battery cells according to claim 1, characterized in that: The second connecting plate has two round holes on both sides of the second bottom sensor, and the two round holes are embedded in the second connecting plate.

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