Novel battery negative pressure formation equipment

Abstract

The utility model relates to the technical field of cylindrical batteries, in particular to novel battery negative pressure formation equipment. A negative-pressure suction nozzle is arranged at a center hole of an anode collector plate at the top of the battery, the bottom of the negative-pressure suction nozzle is connected with a negative-pressure gas collecting tool, the negative-pressure gas collecting tool comprises a cover body, a sealing ring is arranged at the bottom of the cover body, the bottom of the cover body is in butt joint with the edge of the anode collector plate, a groove is formed in the middle of the anode collector plate, and the center hole is formed in the center of the groove. The sealing ring is used for sealing between the bottom of the cover body and the edge of the anode collector plate, a gas-liquid one-way valve is arranged in the negative pressure suction nozzle, and the top of the negative pressure suction nozzle is connected with the gas condensation and collection confluence tank through a negative pressure pipeline. The liquid loss amount of the electrolyte is reduced in the negative pressure formation process, the condition of swelling short circuit in the battery is avoided, and the quality of the battery is ensured; and the electrolyte in the groove does not contact with the bottom of the cover body at the edge of the anode collector plate, so that the electrolyte is prevented from flowing to the probe at the bottom to cause short circuit at the probe, and the equipment safety is ensured.

Description

Technical field:

[0001] The utility model relates to the technical field of cylindrical batteries, in particular to a novel battery negative pressure formation device. Background technology:

[0002] At present, in the negative pressure formation process of new energy batteries, the negative pressure nozzle is generally aimed directly at the center hole of the anode collector of the cylindrical battery. During negative pressure formation, electrolyte often leaks out from the gap between the negative pressure nozzle and the cylindrical battery, resulting in high electrolyte loss, increased internal resistance of the battery, rapid heating of the battery and increased gas production, which can cause the battery to swell and short-circuit; in addition, the residual electrolyte flows to the bottom probe along the negative pressure nozzle, causing a short circuit at the probe, making the battery and equipment unsafe.

[0003] In summary, the above-mentioned problems of cylindrical batteries during the negative pressure formation process have become technical problems that need to be urgently solved in the industry. Utility model content:

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a novel negative pressure formation device for a battery, which solves the problems of high electrolyte loss and short circuit risks inside the battery and at the bottom probe during the previous negative pressure formation process.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A novel negative pressure formation device for a battery comprises a probe arranged at a pole and a shell at the bottom of the battery, the probe being connected to a power module via a wire, a negative pressure nozzle being arranged at the central hole of an anode current collecting disk at the top of the battery, the bottom of the negative pressure nozzle being connected to a negative pressure gas collecting tooling, the negative pressure gas collecting tooling comprising a cover body, a sealing ring being arranged at the bottom of the cover body, the bottom of the cover body being in contact with an edge of the anode current collecting disk, a groove being arranged in the middle of the anode current collecting disk, the center position of the groove being the center hole, the sealing ring being used for sealing between the bottom of the cover body and the edge of the anode current collecting disk, a gas-liquid one-way valve being arranged in the negative pressure nozzle, the top of the negative pressure nozzle being connected to a gas condensation collection junction tank via a negative pressure pipeline, the gas condensation collection junction tank being used for generating negative pressure and condensing and collecting gas inside the battery.

[0007] The cover body is connected with the bottom of the negative pressure suction nozzle by sealing plugging.

[0008] The cover body is made of PTFE material.

[0009] A negative pressure pump is provided on the top of the gas condensation collection and confluence tank.

[0010] The side wall of the gas condensation collection and confluence tank is provided with a circulating water cooling channel.

[0011] A liquid level sensor is arranged in the gas condensation collection and confluence tank, and a drain valve is arranged at the bottom of the gas condensation collection and confluence tank, and the drain valve is connected to the waste electrolyte storage tank through a drain pipeline.

[0012] A pressure sensor is arranged in the gas condensation collection and confluence tank, and an exhaust valve is arranged on the top of the gas condensation collection and confluence tank, and the exhaust valve is connected to the waste electrolyte storage tank through an exhaust pipeline.

[0013] The utility model adopts the above scheme and has the following advantages:

[0014] First, by optimizing the negative pressure tooling, a negative pressure gas collection tooling is added to the bottom of the negative pressure nozzle. The cover body is connected to the edge of the anode collector plate and a sealing ring is set for sealing, so as to generate negative pressure. Since a groove is provided in the middle of the anode collector plate, the center position of the groove is the center hole. The electrolyte is injected from the center hole, and the electrolyte will only remain in the groove to the outside, thereby reducing the loss of electrolyte in the negative pressure formation process, avoiding swelling and short circuit inside the battery, and ensuring the quality of the battery.

[0015] Secondly, the electrolyte in the groove will not contact the bottom of the cover at the edge of the anode collector plate, thereby preventing the electrolyte from flowing to the bottom probe and causing a short circuit at the probe, ensuring the safety of the equipment;

[0016] Thirdly, the gas inside the battery can enter the gas condensation collection tank through the gas-liquid one-way valve and the negative pressure pipeline for collection, and finally be discharged into the waste electrolyte storage tank through the pipeline. The utility model has high application value in the new energy battery industry, especially in the negative pressure formation process. Description of the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is an enlarged structural schematic diagram of the negative pressure gas collection tooling and the gas-liquid one-way valve part of the utility model.

[0019] In the figure, 1. battery, 2. probe, 3. power module, 4. anode collecting plate, 5. center hole, 6. negative pressure nozzle, 7. negative pressure gas collecting tooling, 8. cover, 9. sealing ring, 10. groove, 11. gas-liquid one-way valve, 12. negative pressure pipeline, 13. gas condensation collection junction tank, 14. negative pressure pump, 15. drain valve, 16. drain pipeline, 17. waste electrolyte storage tank, 18. exhaust valve, 19. exhaust pipeline. Specific implementation method:

[0020] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] like Figure 1-2 As shown, a new type of battery negative pressure formation equipment includes a probe 2 arranged at the bottom pole and the shell of the battery 1, the probe 2 is connected to the power module 3 through a wire, a negative pressure suction nozzle 6 is provided at the center hole 5 of the anode collector disk 4 at the top of the battery 1, the bottom of the negative pressure suction nozzle 6 is connected to the negative pressure gas collection tool 7, the negative pressure gas collection tool 7 includes a cover body 8, the bottom of the cover body 8 is provided with a sealing ring 9, the bottom of the cover body 8 is connected to the edge of the anode collector disk 4, the middle of the anode collector disk 4 is provided with a groove 10, the center position of the groove 10 is the center hole 5, the sealing ring 9 is used to seal between the bottom of the cover body 8 and the edge of the anode collector disk 4, a gas-liquid one-way valve 11 is provided in the negative pressure suction nozzle 6, the top of the negative pressure suction nozzle 6 is connected to the gas condensation collection collection tank 13 through a negative pressure pipeline 12, and the gas condensation collection collection tank 13 is used to generate negative pressure and condense and collect the gas inside the battery 1.

[0022] The cover body 8 is plugged and sealed to the bottom of the negative pressure suction nozzle 6 to prevent gas from leaking outward from between the cover body 8 and the negative pressure suction nozzle 6.

[0023] The cover body 8 is made of PTFE material, which has excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance. Other commonly used plastic materials in this field are also within the protection scope of this application.

[0024] A negative pressure pump 14 is provided on the top of the gas condensation collection manifold tank 13 for generating a negative pressure source so that the gas inside the battery 1 enters the gas condensation collection manifold tank 13 .

[0025] The side wall of the gas condensation collection manifold 13 is provided with a circulating water cooling channel to achieve condensation through water cooling.

[0026] A liquid level sensor is provided in the gas condensation collection manifold tank 13, and a drain valve 15 is provided at the bottom of the gas condensation collection manifold tank 13. The drain valve 15 is connected to the waste electrolyte storage tank 17 via a drain pipeline 16. When the liquid level sensor detects that the liquid level in the gas condensation collection manifold tank 13 reaches a set value, the drain valve 15 opens, and the liquid is transported to the waste electrolyte storage tank 17 through the drain pipeline 16.

[0027] A pressure sensor is provided in the gas condensation collection manifold tank 13, and an exhaust valve 18 is provided on the top of the gas condensation collection manifold tank 13. The exhaust valve 18 is connected to the waste electrolyte storage tank 17 via an exhaust pipeline 19. When the pressure sensor detects that the air pressure in the gas condensation collection manifold tank 13 reaches a set value, the exhaust valve 18 opens, and the gas is transported to the waste electrolyte storage tank 17 through the exhaust pipeline 19.

[0028] Working principle:

[0029] During the negative pressure formation process, the battery 1 and the tray are transported to the formation storage position through the RGV along the logistics line. The tray in place micro switch or laser locator on the equipment detects that the tray is in place, and the equipment safety door is automatically closed. The needle bed of probe 2 moves up to make probe 2 contact with the bottom pole and shell of battery 1. The power module 3 charges and discharges the battery 1 through probe 2. The negative pressure tooling is pressed down to make the negative pressure gas collection tooling 7 at the bottom of the negative pressure suction nozzle 6 contact and seal with the edge of the anode collector 4 on the top of the battery 1, and then the negative pressure pump 14 works to evacuate the battery. The gas inside the pool 1 enters the gas condensation collection junction tank 13 through the negative pressure gas collection tooling 7, the gas-liquid one-way valve 11, and the negative pressure pipeline 12. The gas is collected downward by condensation. When the liquid level sensor detects that the liquid level in the gas condensation collection junction tank 13 reaches the set value, the drain valve 15 opens, and the liquid is transported to the waste electrolyte storage tank 17 through the drain pipeline 16. When the pressure sensor detects that the air pressure in the gas condensation collection junction tank 13 reaches the set value, the exhaust valve 18 opens, and the gas is transported to the waste electrolyte storage tank 17 through the exhaust pipeline 19. During the negative pressure formation process of the battery, since a groove 10 is provided in the middle of the anode current collecting disk 4, the center position of the groove 10 is the center hole 5, and the electrolyte is injected from the center hole 5, and the electrolyte will only remain in the groove 10 to the outside, thereby reducing the loss of electrolyte in the negative pressure formation process, avoiding swelling and short circuit inside the battery 1, and ensuring the quality of the battery; the electrolyte in the groove 10 will not contact the bottom of the cover 8 at the edge of the anode current collecting disk 4, thereby avoiding the electrolyte flowing to the bottom probe 2 to cause a short circuit at the probe 2, and ensuring the safety of the equipment.

[0030] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0031] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A new type of negative pressure battery formation equipment, including probes arranged at the bottom pole and shell of the battery, the probes are connected to the power module through wires, and a negative pressure nozzle is arranged at the center hole of the anode collector plate at the top of the battery, characterized in that: The bottom of the negative pressure suction nozzle is connected to the negative pressure gas collecting tooling, the negative pressure gas collecting tooling includes a cover body, the bottom of the cover body is provided with a sealing ring, the bottom of the cover body is connected to the edge of the anode current collecting disk, a groove is provided in the middle of the anode current collecting disk, the center position of the groove is the center hole, the sealing ring is used to seal between the bottom of the cover body and the edge of the anode current collecting disk, a gas-liquid one-way valve is provided in the negative pressure suction nozzle, the top of the negative pressure suction nozzle is connected to the gas condensation collection tank through a negative pressure pipeline, and the gas condensation collection tank is used to generate negative pressure and condense and collect the gas inside the battery.

2. A novel battery negative pressure formation equipment according to claim 1, characterized in that: The cover body is connected with the bottom of the negative pressure suction nozzle by sealing plugging.

3. A novel battery negative pressure formation equipment according to claim 1, characterized in that: The cover body is made of PTFE material.

4. A novel battery negative pressure formation equipment according to claim 1, characterized in that: A negative pressure pump is provided on the top of the gas condensation collection and confluence tank.

5. A novel battery negative pressure formation equipment according to claim 1, characterized in that: The side wall of the gas condensation collection and confluence tank is provided with a circulating water cooling channel.

6. A novel battery negative pressure formation equipment according to claim 1, characterized in that: A liquid level sensor is arranged in the gas condensation collection and confluence tank, and a drain valve is arranged at the bottom of the gas condensation collection and confluence tank, and the drain valve is connected to the waste electrolyte storage tank through a drain pipeline.

7. A novel battery negative pressure formation equipment according to claim 1, characterized in that: A pressure sensor is arranged in the gas condensation collection and confluence tank, and an exhaust valve is arranged on the top of the gas condensation collection and confluence tank, and the exhaust valve is connected to the waste electrolyte storage tank through an exhaust pipeline.

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