Press-fitting and sealing device for liquid injection hole of battery

Abstract

The utility model discloses a battery liquid injection hole press-fitting sealing device which comprises a pressing driver, a cross-shaped support and four pressing heads, and the output end of the pressing driver is arranged downwards; the middle of the cross-shaped support is connected with the output end of the pressing driver. The top ends of the four pressing heads are connected with the four ends of the cross-shaped support in a one-to-one correspondence mode. Each pressing head is provided with a fool-proof device. According to the battery liquid injection hole press-fitting sealing device disclosed by the utility model, four plugs can be tightly pressed at one time, so that the stress of the four plugs is uniform, neglected mounting of the plugs is prevented, and the liquid injection hole and the plugs are sealed through the dual functions of sealant and physical sealing, so that the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to a press-fit sealing device for a battery liquid injection hole. Background Art

[0002] Since renewable energy sources such as wind and solar energy have discontinuous, unstable and uncontrollable characteristics, the development of new low-cost energy storage batteries is one of the core technologies to solve the above problems. Moreover, compared with mechanical energy storage and electromagnetic energy storage, electrochemical energy storage is currently the most promising battery to achieve breakthroughs in cost and safety, so the research and development of various new electrochemical energy storage battery technologies has made continuous progress. In recent years, aqueous sodium-ion batteries have attracted widespread attention from researchers due to their rocking-chair ion insertion and extraction reaction mechanism. The main features are that the electrolyte system is neutral, inherently safe and environmentally friendly. However, the current research on aqueous sodium-ion energy storage batteries mainly focuses on positive and negative active materials and electrochemical mechanisms, while there is less research and optimization on battery structure and grouping methods.

[0003] See also Figure 1 , Figure 2 and Figure 3 During the production process of aqueous sodium ion electrons, there are four injection holes 2 on the battery cover. After the battery is injected, the plug 1 needs to be pressed to block the injection hole 2 to prevent leakage. Since it is an aqueous electrolyte, sealing can be achieved with ordinary sealing glue. However, since each battery has four injection holes 2, the sealing of the injection holes 2 is manually operated. The four plugs 1 are manually knocked one by one with a hammer to knock the plugs 1 into place. The knocking force is uncertain, and the force on the four plugs 1 is uncertain; and the knocking process is likely to cause damage to the plug or the battery due to the knocking force; the manual knocking installation method of the plug has no anti-fool mechanism, and it is easy to miss the plug. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a battery liquid filling hole press-fit sealing device, which can press four plugs at one time to ensure that the four plugs are evenly stressed and prevent missing plugs. The liquid filling hole and the plug are sealed by the dual effects of sealant and physical sealing, and the sealing effect is good.

[0005] The technical solution to achieve the above purpose is: a battery filling hole press-fit sealing device, including a pressing driver, a cross-shaped bracket and four pressing heads, wherein:

[0006] The output end of the compression driver is arranged downward;

[0007] The middle part of the cross-shaped bracket is connected to the output end of the clamping driver;

[0008] The top ends of the four pressure heads are connected to the four ends of the cross-shaped bracket in a one-to-one correspondence;

[0009] Each pressure head is equipped with an anti-foolproof device.

[0010] In the above-mentioned battery liquid filling hole press-fitting sealing device, the pressing driver adopts a power source cylinder or a servo motor.

[0011] In the above-mentioned battery liquid filling hole press-fit sealing device, the fool-proof device adopts a pressure detection sensor and / or a rangefinder.

[0012] In the above-mentioned battery filling hole press-fit sealing device, the pressure detection sensor is arranged in the middle of the pressure head, and the rangefinder is arranged at the bottom end of the pressure head.

[0013] The above-mentioned battery injection hole press-fit sealing device is used to press-fit four plugs into the four injection holes of the battery in a one-to-one correspondence at the same time. The injection holes and plugs are respectively trapezoidal with a taper of 0.2 to 0.3. A gap of 0.1 to 1 mm is left between each plug and the corresponding injection hole, and the gap is filled with sealant.

[0014] In the above-mentioned battery liquid injection hole press-fit sealing device, the sealant is selected from a mixture of one or more of silicone, acrylic acid, polyurethane and latex.

[0015] The battery liquid injection hole press-fitting sealing device of the utility model can press four plugs at one time, ensuring that the four plugs are evenly stressed and preventing plugs from being missed. The liquid injection hole and the plug are sealed by the dual effects of sealant and physical sealing, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a liquid filling hole on a battery;

[0017] Figure 2 It is a structural schematic diagram of the plug;

[0018] Figure 3 It is a cross-sectional schematic diagram of a plug sealing a liquid injection port;

[0019] Figure 4 It is a structural schematic diagram of the battery liquid injection hole press-fit sealing device of the utility model (the anti-fool device adopts a pressure detection sensor);

[0020] Figure 5 It is a structural schematic diagram of the battery filling hole press-fit sealing device of the utility model (the anti-fool device adopts a distance meter);

[0021] Figure 6 It is a cross-sectional schematic diagram of a liquid injection port and a plug sealed by the sealing device of the utility model. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the utility model, the specific implementation method thereof is described in detail below in conjunction with the accompanying drawings:

[0023] See also Figure 4 , Figure 5 and Figure 6 The best embodiment of the utility model is a battery filling hole press-fitting sealing device, comprising a pressing driver 4, a cross-shaped bracket 5 and four pressing heads 9. The output end of the pressing driver 4 is arranged downward; the middle part of the cross-shaped bracket 5 is connected to the output end of the pressing driver 4; the top ends of the four pressing heads 9 are connected to the four ends of the cross-shaped bracket 5 one by one; each pressing head 9 is provided with an anti-fool device.

[0024] The pressing driver 4 uses a power source cylinder or a servo motor to drive the four pressing heads 9 to descend and press the four plugs 1 at one time, thereby ensuring that the four plugs 1 are evenly stressed.

[0025] The foolproof device can determine the undesirable conditions such as the press-fitting is not in place, the plug is too loose, etc. The foolproof device can use a pressure detection sensor 6 and / or a distance meter 7. The pressure detection sensor 6 is installed in the middle of the pressure head 9 to detect the size of the pressing force; the distance meter 7 is set at the bottom of the pressure head 9 to detect the pressing distance. By presetting the pressing force or the pressing distance, or monitoring both at the same time, it is ensured that all plugs are pressed in place and the pressing force is consistent with the position.

[0026] The battery injection hole press-fitting sealing device of the utility model is used to press-fit four plugs 1 into four injection holes 2 of the battery in a one-to-one correspondence at the same time. The injection holes 2 and the plugs 1 are respectively in a trapezoidal shape with a taper of 0.2 to 0.3. A gap of 0.1 to 1 mm is left between each plug 1 and the corresponding injection hole 2, and the gap is filled with a sealant 3. The sealant is selected from one or more of silicone, acrylic acid, polyurethane and latex.

[0027] The battery injection hole press-fitting sealing device of the utility model, when in use, presses the driver 4 and the foolproof device externally connected to the controller. The plug 1 is first glued with sealant 3, the amount of glue for each plug 1 is 0.5-2g, and then placed on the injection hole 2 of the battery cover 8, and then press-fitting sealing device is used for pressurized sealing, and the pressing driver 4 drives four pressure heads 9 to descend at the same time, pressing four plugs 1 at a time; the injection hole 21 and the plug are sealed by the dual effects of sealant 3 and physical sealing, and the sealing effect is good.

[0028] A pressure detection sensor 6 is added to the pressure head 9, and the clamping force can be set in advance on the controller. The pressure detection sensor 6 feeds back the clamping force to the controller. The controller judges whether there is any undesirable situation such as missing or inadequate press fitting, too loose plug, etc. according to the clamping force fed back by the pressure detection sensor 6. The clamping force setting value can be 500-900KG (see Figure 5 ).

[0029] A distance meter 7 may also be provided on the bottom plane of the pressure head 9. When the distance measured by the distance meter 7 is less than 1 mm, it is considered that the plug has completely entered the injection hole and the press-fitting is completed (see Figure 6 ).

[0030] In summary, the battery filling hole press-fit sealing device of the utility model can press four plugs at a time, ensuring that the four plugs are evenly stressed and preventing missing plugs. The filling hole and the plug are sealed by the dual effects of sealant and physical sealing, and the sealing effect is good.

[0031] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A battery filling hole press-fit sealing device, characterized in that: It consists of a pressing drive, a cross-shaped bracket and four pressing heads, including: The output end of the compression driver is arranged downward; The middle part of the cross-shaped bracket is connected to the output end of the clamping driver; The top ends of the four pressure heads are connected to the four ends of the cross-shaped bracket in a one-to-one correspondence; Each pressure head is equipped with an anti-foolproof device.

2. A battery filling hole press-fitting sealing device according to claim 1, characterized in that: The pressing driver adopts a power source cylinder or a servo motor.

3. A battery liquid filling hole press-fitting sealing device according to claim 1, characterized in that: The fool-proofing device adopts a pressure detection sensor and / or a distance meter.

4. A battery liquid filling hole press-fitting sealing device according to claim 3, characterized in that: The pressure detection sensor is arranged at the middle of the pressure head, and the distance meter is arranged at the bottom end of the pressure head.

5. A battery liquid filling hole press-fitting sealing device according to claim 1, characterized in that: It is used to press-fit four plugs into the four injection holes of the battery in a one-to-one correspondence at the same time. The injection holes and the plugs are respectively trapezoidal with a taper of 0.2-0.

3. A gap of 0.1-1 mm is left between each plug and the corresponding injection hole, and the gap is filled with sealant.

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