Sealed safe combined lithium battery cap

Abstract

The utility model relates to the technical field of battery protection, and discloses a sealed safe combined lithium battery cap which comprises a cover plate, a sealing ring for sealing is fixedly mounted at the bottom of the cover plate, an anti-explosion piece for protection is fixedly mounted at the bottom of the cover plate, and a pole for conduction is fixedly mounted at the bottom of the anti-explosion piece. One side of the pole is fixedly connected with a battery for power generation, and one side of the battery is fixedly provided with an aluminum plastic film for protection. According to the sealed type safe combined lithium battery cap, through the matched arrangement of the anti-explosion piece and the pole column, the pole column can be used for conducting electricity, normal charging and discharging of a device are guaranteed, the anti-explosion piece can automatically cut off a circuit when the device is abnormal, the explosion condition is avoided, and through the matched arrangement of the battery and the aluminum plastic film, the safety of the device is improved. The aluminum-plastic film can be used for protecting the battery, and the aluminum-plastic film has good ductility, flexibility and mechanical strength, so that the battery can be prevented from being damaged by the outside, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery protection technology, specifically a sealed safety combination lithium battery cap. Background Technology

[0002] With the popularization of electronic devices and the continuous development of technology, lithium batteries, as the main energy supply device, have received increasing attention for their safety and reliability. Traditional lithium battery caps are inadequate in terms of waterproofing, moisture protection, explosion safety, and battery protection, which can easily lead to a decline in battery performance, a shortened lifespan, and even safety accidents.

[0003] Chinese Patent Publication No. CN215070162U discloses a sealed safety combination lithium battery cap, including a connecting cover and a shell. The connecting cover has a slot at its top, and the bottom of the shell is inserted into the slot. An explosion-proof sheet is provided above the connecting cover, and an aluminum sheet is provided below the explosion-proof sheet. A sealing ring is provided between the aluminum sheet and the connecting cover. Multiple support rods are fixedly connected to the top of the connecting cover. The top ends of the multiple support rods pass through the sealing ring, the aluminum sheet, and the explosion-proof sheet and extend upward. A top shell is provided inside the shell. The outer side of the top shell is slidably sleeved on the support rods. A connecting piece is sleeved on the support rod, and the connecting piece is located above the top shell. A connecting cap top is fixedly connected to the top of the top shell. This utility model is easy to weld and operate, and can effectively diffuse gas when the battery temperature rises, improving the safety of lithium battery use.

[0004] However, this utility model has the following problems in actual use:

[0005] In practical use, this utility model does not have a structure that can automatically cut off the circuit in case of abnormality, which may lead to accidents due to excessive internal pressure during use, resulting in low reliability. At the same time, it does not have a structure that can effectively protect the battery side, resulting in insufficient mechanical strength of the battery surface during use, which may affect normal use, thus limiting its practicality. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To overcome the aforementioned deficiencies of the prior art, this utility model provides a sealed safety combined lithium battery cap, which solves the problems in the prior art:

[0008] This utility model lacks a structure that can automatically cut off the circuit in case of abnormality during actual use, which may lead to accidents due to excessive internal pressure during use, resulting in low reliability. In addition, it lacks a structure that can effectively protect the battery side, resulting in insufficient mechanical strength of the battery surface during use, which may affect normal use, thus limiting its practicality.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealed safety combination lithium battery cap, including a cover plate, a sealing ring for sealing is fixedly installed at the bottom of the cover plate, an explosion-proof sheet for protection is fixedly installed at the bottom of the cover plate, an electrode post for conduction is fixedly installed at the bottom of the explosion-proof sheet, a battery for generating electricity is fixedly connected to one side of the electrode post, and an aluminum-plastic film for protection is fixedly installed on one side of the battery.

[0011] Optionally, a positive electrode cover for conducting electricity is fixedly connected to the top of the cover plate, and a positive electrode rod for connection is fixedly connected to the bottom of the positive electrode cover.

[0012] Optionally, an insulating sheet for protection is fixedly installed on one side of the sealing ring, and a through hole for positioning is provided in the middle of the sealing ring.

[0013] Optionally, the explosion-proof sheet has a positioning slot on its top and a flip piece for protecting the circuit is engaged at its bottom.

[0014] Optionally, a diaphragm for support is fixedly installed on one side of the electrode post, and the one side of the electrode post is snapped into the middle of the battery through the diaphragm.

[0015] Optionally, a cover plate for support is fixedly installed on the top of the battery, and the top of the battery is fixedly installed to the bottom of the cover plate via the cover plate.

[0016] Optionally, a negative lead for communication is fixedly installed at the bottom of the battery, and a base plate for fixing is fixedly installed at the bottom of the battery.

[0017] Optionally, a nylon layer for protection is fixedly installed on one side of the aluminum-plastic film, and an adhesive layer for fixation is bonded to one side of the aluminum-plastic film.

[0018] (III) Beneficial Effects

[0019] This utility model provides a sealed safety cap for a combined lithium battery, which has the following advantages:

[0020] This sealed safety lithium battery cap, through the cooperation of a cover plate and a sealing ring, allows the cover plate to securely install the sealing ring, protecting the internal components of the device and providing waterproofing and moisture protection, extending the device's lifespan and increasing its airtightness. The combination of an explosion-proof plate and terminals allows the terminals to conduct electricity, ensuring normal charging and discharging. The explosion-proof plate automatically cuts off the circuit in case of malfunction, preventing explosions and increasing the device's safety and reliability. The combination of the battery and an aluminum-plastic film protects the battery; the aluminum-plastic film's excellent ductility, flexibility, and mechanical strength prevents external damage, ensuring normal device operation and increasing its practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the cover plate structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the explosion-proof sheet structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the pole post structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the aluminum-plastic film structure of this utility model.

[0026] In the diagram: 1. Cover plate; 2. Sealing ring; 3. Explosion-proof sheet; 4. Terminal post; 5. Battery; 6. Aluminum-plastic film; 7. Positive electrode cover; 8. Positive electrode rod; 9. Insulating sheet; 10. Through hole; 11. Slot; 12. Flip plate; 13. Separator; 14. Cap plate; 15. Negative electrode lead; 16. Base plate; 17. Nylon layer; 18. Adhesive layer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 5 This utility model embodiment provides a sealed safety combination lithium battery cap, which is applied to battery safety protection scenarios. In this embodiment, the structure of safety protection and support is improved to make it have the advantages of strong sealing, safety and reliability and high practicality. Example 1:

[0029] Please see Figures 1 to 5 In order to make the device safer and more airtight during use and to ensure the normal use of the device, a cover plate 1 and a sealing ring 2 are provided.

[0030] The battery includes a cover plate 1, a sealing ring 2 fixedly installed at the bottom of the cover plate 1 for sealing, a positive electrode cover 7 fixedly connected to the top of the cover plate 1 for conducting electricity, a positive electrode rod 8 fixedly connected to the bottom of the positive electrode cover 7 for connection, an insulating sheet 9 fixedly installed on one side of the sealing ring 2 for protection, and a through hole 10 for positioning in the middle of the sealing ring 2. Therefore, when in use, the positive electrode cover 7 is fixedly connected to the top of the cover plate 1, and its bottom is connected to the electrode post 4 through the positive electrode rod 8, ensuring that the current can be smoothly transmitted from the external circuit to the inside of the battery 5. The insulating sheet 9 is fixedly installed on one side of the sealing ring 2 to prevent current leakage at the sealing ring 2 and improve the safety of the battery 5. Example 2:

[0031] Please see Figures 1 to 5 To make the device more reliable during use, it can automatically cut off the circuit when the internal pressure is high, and is equipped with an explosion-proof plate 3 and a pole 4.

[0032] An explosion-proof plate 3 for protection is fixedly installed at the bottom of the cover plate 1. An electrode post 4 for conduction is fixedly installed at the bottom of the explosion-proof plate 3. A positioning slot 11 is opened at the top of the explosion-proof plate 3. A flip plate 12 for protecting the circuit is snapped into the bottom of the explosion-proof plate 3. A diaphragm 13 for support is fixedly installed on one side of the electrode post 4. One side of the electrode post 4 is snapped into the middle of the battery 5 through the diaphragm 13. Therefore, the top of the explosion-proof plate 3 has a slot 11, which is convenient for positioning and installation with the cover plate 1 or other components. The flip plate 12 is snapped into the bottom of the explosion-proof plate 3 and is used to automatically flip and cut off the circuit when the internal pressure of the battery 5 rises abnormally, so as to prevent the battery 5 from exploding. The battery 5 is snapped into the electrode post 4 through the diaphragm 13, which ensures that the current can flow normally inside the battery 5 and increases the reliability of the device. Example 3:

[0033] Please see Figures 1 to 5 In order to make the device more practical during use and to provide effective protection for the outside of the device, a battery 5 and an aluminum-plastic film 6 are provided.

[0034] A battery 5 for power generation is fixedly connected to one side of the terminal post 4. An aluminum-plastic film 6 for protection is fixedly installed on one side of the battery 5. A cap plate 14 for support is fixedly installed on the top of the battery 5. The top of the battery 5 is fixedly installed to the bottom of the cap plate 1 via the cap plate 14. A negative electrode lead 15 for connection is fixedly installed on the bottom of the battery 5. A base plate 16 for fixing is fixedly installed on the bottom of the battery 5. A nylon layer 17 for protection is fixedly installed on one side of the aluminum-plastic film 6. An adhesive layer 18 for fixing is adhered to one side of the aluminum-plastic film 6. Therefore, during use, the negative electrode lead... The base plate 16 is fixedly installed at the bottom of the battery 5 to ensure that the battery 5 can be stably placed in the working environment. The negative lead 15 is connected to the negative terminal of the battery 5 to form a complete current circuit. The aluminum-plastic film 6 is a thin film material with excellent ductility, flexibility and mechanical strength. A nylon layer 17 is fixedly installed on one side to enhance the strength and wear resistance of the aluminum-plastic film 6. The aluminum-plastic film 6 is tightly attached to the outer surface of the battery 5 through the adhesive layer 18 to form an effective protective barrier to prevent the battery 5 from being damaged by the outside world and increase the practicality of the device.

[0035] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0036] In this invention, the working steps of the device are as follows:

[0037] First, install the assembled lithium battery cap onto the lithium battery, ensuring that the positive electrode cap 7 and the negative electrode lead 15 are correctly connected to the external circuit. Second, during the charging and discharging process of battery 5, the current forms a complete circuit through the positive electrode cap 7, positive electrode rod 8, terminal post 4, battery 5, and negative electrode lead 15. Then, when the internal pressure of battery 5 rises abnormally, the explosion-proof sheet 3 automatically breaks, and the flip sheet 12 flips and cuts off the circuit to prevent battery 5 from exploding. Finally, regularly check the sealing performance and explosion-proof performance of the lithium battery cap to ensure that battery 5 can work stably for a long time.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed safety combination lithium battery cap, comprising a cover plate (1), characterized in that: The bottom of the cover plate (1) is fixedly installed with a sealing ring (2) for closing, the bottom of the cover plate (1) is fixedly installed with an explosion-proof sheet (3) for protection, the bottom of the explosion-proof sheet (3) is fixedly installed with a pole (4) for conduction, one side of the pole (4) is fixedly connected with a battery (5) for power generation, one side of the battery (5) is fixedly installed with an aluminum plastic film (6) for protection.

2. A sealed safety combination lithium battery cap as defined in claim 1, wherein: The top of the cover plate (1) is fixedly connected with a positive cover (7) for conduction, the bottom of the positive cover (7) is fixedly connected with a positive rod (8) for connection.

3. The sealed safety combination lithium battery cap of claim 1, wherein: One side of the sealing ring (2) is fixedly installed with an insulating sheet (9) for protection, the middle of the sealing ring (2) is provided with a through hole (10) for positioning.

4. The sealed safety combination lithium battery cap of claim 1, wherein: The top of the explosion-proof sheet (3) is provided with a clamping groove (11) for positioning, the bottom of the explosion-proof sheet (3) is clamped with a turnover sheet (12) for protecting the circuit.

5. The sealed safety combination lithium battery cap of claim 1, wherein: One side of the pole (4) is fixedly installed with a diaphragm (13) for supporting, one side of the pole (4) is clamped with the middle of the battery (5) through the diaphragm (13).

6. The sealed safety combination lithium battery cap of claim 1, wherein: The top of the battery (5) is fixedly installed with a cap plate (14) for supporting, the top of the battery (5) is fixedly installed with the bottom of the cover plate (1) through the cap plate (14).

7. The sealed safety combination lithium battery cap of claim 1, wherein: The bottom of the battery (5) is fixedly installed with a negative lead (15) for communication, the bottom of the battery (5) is fixedly installed with a bottom plate (16) for fixation.

8. The sealed safety combination lithium battery cap of claim 1, wherein: One side of the aluminum plastic film (6) is fixedly installed with a nylon layer (17) for protection, one side of the aluminum plastic film (6) is bonded with an adhesive layer (18) for fixation.

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