Battery formation negative pressure cup assembly with plug

Abstract

The invention provides a battery formation negative-pressure cup assembly with a plug, which comprises a fixed frame, a negative-pressure busbar is arranged on the fixed frame, a plurality of negative-pressure cups which are arranged in parallel at intervals are arranged below the fixed frame, each negative-pressure cup comprises a negative-pressure cup body, the top of each negative-pressure cup body is provided with an extraction opening, and the extraction openings are communicated with the negative-pressure busbars. Each negative pressure cup is correspondingly provided with two guide rods which are arranged in parallel at intervals in the vertical direction, the tops of the guide rods are connected with the fixing frame, the bottoms of the guide rods penetrate through negative pressure cup bodies and then extend into the negative pressure cup bodies, and the guide rods are connected with the plugs through connecting rods. And an extraction opening in the top of the negative pressure cup body is connected with the negative pressure busbar through a hose. The negative pressure cup assembly is simple in structure and ingenious in design, can achieve accurate identification of the empty channel of the battery tray under the condition that electric control is not used, and achieves independent closing of a negative pressure gas circuit of the empty channel during formation.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, and in particular to a battery formation negative pressure cup assembly with a plug. Background Art

[0002] With the vigorous development of new energy vehicles, higher requirements have been put forward for the range, safety and charging speed of new energy vehicles. In order to increase the range of vehicles, it is necessary to increase the energy density of power batteries. Some battery manufacturers have developed high-energy density battery formulas to increase the energy density of batteries. High-energy-density batteries produce a large amount of gas during the battery formation production process. If the gas is not discharged in time, it is easy to cause the battery shell to expand, affecting the appearance and performance of the battery. In order to exhaust during the formation process, a negative pressure module is used to perform negative pressure extraction on the battery filling port. However, in actual production, the following problems may occur: Figure 1 In the situation shown, after the NG battery cells are selected before formation, the batteries in the battery tray cannot be filled. In this case, in the prior art, it is necessary to replenish the battery cells or fake battery cells to prevent the vacuum degree of the negative pressure nozzle in the empty position after being selected from decreases. This leads to the need to reserve battery cell or fake battery cell positions when designing the production line, and manual replenishment of battery cells is required on a regular basis, which reduces the space utilization of the production line and increases the cost and operation of the production line workers.

[0003] Therefore, when several NG cells in a tray are picked out and then processed, the existing negative pressure module has the following problems:

[0004] (1) Negative pressure leakage in the empty channel, resulting in decreased vacuum degree;

[0005] (2) It is impossible to control the disconnection of the negative pressure gas path of the empty channel independently;

[0006] (3) Adding fake cells or re-forming the cells increases the operation process, wasting robot cycles and factory space. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention proposes a battery formation negative pressure cup assembly with a plug, which can realize accurate identification of the empty channel of the battery tray and realize the independent closure of the negative pressure air path of the formation space-time channel without using electronic control, and there is no air leakage after the negative pressure of the formation space-time channel is closed.

[0008] In order to realize the above technical scheme, the present invention provides a battery formation negative pressure cup assembly with a plug, comprising: a fixing frame, a negative pressure bus is installed on the fixing frame, a plurality of negative pressure cups arranged in parallel and spaced apart are installed below the fixing frame, the negative pressure cup comprises a negative pressure cup body, a suction port is arranged on the top of the negative pressure cup body, a plug adapted to the suction port is installed below the suction port, a suction nozzle tube is arranged at the bottom of the negative pressure cup body, and two parallel and spaced apart pipes are installed on each negative pressure cup. A guide rod is provided, the top of which is connected to the fixing frame, the bottom of which passes through the negative pressure cup body and then extends into the negative pressure cup body, the guide rod is connected to the plug by a connecting rod, the air suction port at the top of the negative pressure cup body and the negative pressure bus are connected by a hose, a bottom plate is installed on the fixing frame below the negative pressure cup, a suction nozzle tube at the bottom of the negative pressure cup body passes through the bottom plate longitudinally and extends downward, a suction nozzle is installed at the bottom of the suction nozzle tube, and a spring is sleeved on the area of ​​the suction nozzle tube between the bottom plate and the suction nozzle.

[0009] In the above technical solution, during actual operation, the negative pressure cup slides down along the guide rod under the action of its own gravity and the elastic force of the spring, so that the plug located below the vacuum port of the negative pressure cup is just inserted into the vacuum port, thereby closing the vacuum port of the negative pressure cup. Even when the negative pressure bus is evacuated, the negative pressure cup is in a closed state. When the battery tray rises, the bottom of the negative pressure cup contacts the liquid injection port of the battery in the battery tray, and under the push of the battery, the spring elastic force and gravity are overcome to make the negative pressure cup move up along the guide rod, while the plug is fixed. Therefore, when the negative pressure cup moves up along the guide rod, the plug will be separated from the vacuum port, thereby opening the vacuum port of the negative pressure cup. At this time, when the negative pressure bus is evacuated, the vacuum port of the battery can be evacuated through the negative pressure cup, and the empty channel in the battery tray where the battery is missing cannot push the negative pressure cup to move up, so the negative pressure cup of the empty channel is always in a closed state, thereby realizing the negative pressure gas path of the formation time-space channel is closed separately, and the formation time-space channel does not leak after the negative pressure is closed.

[0010] Preferably, a sealing ring is installed at the joint between the guide rod and the negative pressure cup body to ensure good sealing at the joint between the guide rod and the negative pressure cup body.

[0011] Preferably, one end of the negative pressure bus is connected to a vacuum pumping device, and during actual operation, the vacuum pumping device is used to cause the negative pressure bus to generate suction force.

[0012] Preferably, a lifting platform is installed below the negative pressure cup, a driving cylinder is installed at the bottom of the lifting platform, the battery tray is placed on the lifting platform, and the battery is placed in the battery tray. During actual work, the lifting platform is driven up and down by the driving cylinder, thereby achieving contact or separation between the battery in the battery tray and the negative pressure cup.

[0013] The beneficial effect of a battery formation negative pressure cup assembly with a plug provided by the present invention is that the battery formation negative pressure cup assembly with a plug has a simple structure and a clever design, and can accurately identify the empty channel of the battery tray without using an electric control, and realize the independent closure of the negative pressure gas path of the formation time-space channel, and the formation time-space channel does not leak after the negative pressure is closed. In actual operation, the negative pressure cup slides down along the guide rod under the action of its own gravity and the elastic force of the spring, so that the plug located below the vacuum port of the negative pressure cup is just inserted into the vacuum port, thereby closing the vacuum port of the negative pressure cup, and the negative pressure cup is in a closed state even when the negative pressure bus is evacuated. When the battery tray rises, the bottom of the negative pressure cup contacts the filling port of the battery in the battery tray, and under the push of the battery, the spring force and gravity are overcome to make the negative pressure cup move up along the guide rod, while the plug is fixed. Therefore, when the negative pressure cup moves up along the guide rod, the plug will be separated from the vacuum port, thereby opening the vacuum port of the negative pressure cup. At this time, when the negative pressure bus is evacuated, the filling port of the battery can be evacuated through the negative pressure cup, and the empty channel in the battery tray where the battery is missing cannot push the negative pressure cup to move up. Therefore, the negative pressure cup of the empty channel is always in a closed state, thereby realizing the separate closure of the negative pressure air path of the formation space-time channel, and there is no air leakage after the negative pressure of the formation space-time channel is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the battery tray with empty channels.

[0015] Figure 2 It is a schematic diagram of the structure when the negative pressure cup is not in contact with the battery in the present invention.

[0016] Figure 3 It is a schematic diagram of the structure after the negative pressure cup contacts the battery in the present invention.

[0017] Figure 4 for Figure 2 Enlarged schematic diagram of the local structure.

[0018] Figure 5 for Figure 3 Enlarged schematic diagram of the local structure.

[0019] Figure 6 It is a schematic diagram of the structure of the negative pressure cup, the plug and the guide rod installation in the present invention.

[0020] In the figure: 1. fixing frame; 2. guide rod; 3. connecting rod; 4. plug; 5. negative pressure cup; 51. negative pressure cup body; 52. suction nozzle tube; 53. suction port; 6. hose; 7. negative pressure bus; 8. bottom plate; 9. spring; 10. suction nozzle; 11. battery tray; 12. battery; 13. lifting platform; 14. driving cylinder; 15. sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in the art without creative work are within the scope of protection of the present invention.

[0022] Embodiment: A battery formation negative pressure cup assembly with a plug.

[0023] Reference Figures 1 to 6 As shown, a battery formation negative pressure cup assembly with a plug comprises: a fixed frame 1, a negative pressure bus 7 is installed on the fixed frame 1, one end of the negative pressure bus 7 is connected to a vacuum pumping device, during actual operation, the vacuum pumping device is used to make the negative pressure bus 7 generate suction force, a plurality of negative pressure cups 5 arranged in parallel and spaced apart are installed below the fixed frame 1, the negative pressure cup 5 comprises a negative pressure cup body 51, a suction nozzle tube 52 is installed at the bottom of the negative pressure cup body 51, the suction nozzle tube 52 longitudinally penetrates through a bottom plate 8 arranged on the fixed frame 1 and located below the negative pressure cup 5 and extends downward, a suction nozzle 10 is installed at the bottom of the suction nozzle tube 52, and the suction nozzle 10 can better achieve contact with the liquid filling port of the battery 12, and a spring 9 is sleeved on the area of ​​the suction nozzle tube 52 between the bottom plate 8 and the suction nozzle 10, and the spring 9 can be provided so that under normal circumstances, the suction nozzle 10 can drive the negative pressure cup 5 to move downward and plug the plug 4, so that the negative pressure cup 5 is in a normally closed state. The top of the negative pressure cup body 51 is provided with an air suction port 53, and a plug 4 adapted to the air suction port 53 is installed below the air suction port 53. Each negative pressure cup 5 is correspondingly installed with two guide rods 2 arranged in parallel and spaced apart in the vertical direction. The top of the guide rod 2 is connected to the fixing frame 1, and the bottom of the guide rod 2 passes through the negative pressure cup body 51 and extends into the negative pressure cup body 51. The guide rod 2 and the plug 4 are connected by a connecting rod 3. This structural design makes the position of the plug 4 fixed, but the negative pressure cup 5 can move up and down along the guide rod 2. A sealing ring 15 is installed at the joint between the guide rod 2 and the negative pressure cup body 51 to enhance the sealing of the joint. The air suction port 53 at the top of the negative pressure cup body 51 is connected to the negative pressure bus 7 by a hose 6. The hose 6 connection can meet both the needs of vacuum extraction and the requirements of the negative pressure cup 5 moving up and down. A lifting platform 13 is installed below the negative pressure cup 5, and a driving cylinder 14 is installed at the bottom of the lifting platform 13. The battery tray 11 is placed on the lifting platform 13, and the battery 12 is placed in the battery tray 11. During actual work, the lifting platform 13 is driven up and down by the driving cylinder 14, thereby achieving contact or separation between the battery 12 in the battery tray 11 and the negative pressure cup 5.

[0024] The battery formation negative pressure cup assembly with a plug has a simple structure and an ingenious design. It can accurately identify the empty channel of the battery tray 11 without using an electric control, and realize the independent closure of the negative pressure gas path of the formation space-time channel, and the formation space-time channel is leak-proof after the negative pressure is closed. In actual operation, the negative pressure cup 5 slides down along the guide rod 2 under the action of its own gravity and the elastic force of the spring 9, so that the plug 4 located below the air suction port 53 of the negative pressure cup 5 is just inserted into the air suction port 53, thereby closing the air suction port 53 of the negative pressure cup 5, and even when the negative pressure bus 7 is evacuated, the negative pressure cup 5 is in a closed state. When the battery tray 11 rises, the bottom of the negative pressure cup 5 contacts the filling port of the battery 12 in the battery tray 11, and the negative pressure cup 5 moves up along the guide rod 2 under the push of the battery 12, while the plug 4 is fixed. Therefore, when the negative pressure cup 5 moves up along the guide rod 2, the plug 4 will be separated from the air suction port 53, thereby opening the air suction port 53 of the negative pressure cup 5. At this time, when the negative pressure bus 7 is evacuated, the filling port of the battery 12 can be evacuated through the negative pressure cup 5, and the empty channel in the battery tray 11 where the battery 12 is missing cannot push the negative pressure cup 5 to move up. Therefore, the negative pressure cup 5 of the empty channel is always in a closed state, thereby realizing the separate closure of the negative pressure air path of the formation time-space channel, and there is no air leakage after the negative pressure of the formation time-space channel is closed.

[0025] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings, so any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A battery formation negative pressure cup assembly with a plug, characterized in that include: The top of the suction cup is provided with an air suction port, and the bottom of the suction port is provided with a nozzle.

2. The battery formation negative pressure cup assembly with a plug as claimed in claim 1, characterized in that: A sealing ring is installed at the joint between the guide rod and the negative pressure cup body.

3. The battery formation negative pressure cup assembly with a plug as claimed in claim 1, characterized in that: One end of the negative pressure bus is connected to a vacuum pumping device.

4. The battery formation negative pressure cup assembly with a plug as claimed in claim 1, characterized in that: A lifting platform is installed below the negative pressure cup, a driving cylinder is installed at the bottom of the lifting platform, a battery tray is placed on the lifting platform, and batteries are placed in the battery tray.

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