Rechargeable lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a rechargeable lithium battery which comprises a metal shell, an inner core is fixedly connected to the lower side of the inner wall of the metal shell, a terminal conductive module is fixedly connected to the upper side of the inner core, and a first conductive column is fixedly connected to the upper side of the terminal conductive module; the upper side of the metal shell is fixedly connected with an operation frame, and the upper side of the operation frame is fixedly connected with a steel cap. By arranging the steel cap, the conduction rod, the empty groove block, the first conductive column, the second conductive column and other parts, when the battery is not used, the conduction rod can be driven to move by pushing the sliding block, so that the conduction rod is separated from the first conductive column and the second conductive column, and the battery steel cap is insulated; and a conductive path possibly formed between the battery and the outside is blocked, so that the self-discharge acceleration condition of the battery caused by external factors is avoided, and the battery can preserve the electric quantity to the greatest extent during the idle period.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium batteries, in particular to a rechargeable lithium battery. BACKGROUND

[0002] The rechargeable lithium battery, also known as lithium ion secondary battery, is a rechargeable battery that can be charged and discharged multiple times by converting electrical energy and chemical energy through the repeated embedding and de-embedding of lithium ions between the positive and negative electrodes. Through the external power supply, lithium ions are removed from the positive electrode material, migrate to the negative electrode material through the electrolyte, and are embedded into the negative electrode lattice structure. At the same time, electrons flow from the positive electrode to the negative electrode through the external circuit, realizing the conversion of electrical energy to chemical energy and storing the battery capacity.

[0003] Through retrieval, Chinese patent application No. CN202111261239.0 discloses a rechargeable lithium battery, which comprises a shell, a roll core, a positive electrode terminal, a negative electrode terminal, a sealing element, a protection plate, an insulating element, a steel cap, a pressure relief valve and a positive electrode connecting piece. The roll core is provided with a positive electrode and a negative electrode at the upper end. The roll core and the protection plate are arranged in the same cavity. The sealing element protects the protection plate from corrosion by the electrolyte in the roll core. During installation, the positive electrode terminal and the negative electrode terminal can be directly welded on the protection plate. After assembly, the electrolyte can be injected into the shell, and then the steel cap is installed. The sealing, testing and labeling processes can simplify the PACK welding and assembly process and reduce production costs.

[0004] For the related technology in the above, the inventors found that the following defects exist: In the process of use, once not used, the battery may be in contact with some conductive substances in the surrounding environment during storage, such as metal particles mixed in dust, water vapor generated in a humid environment, etc. These conductive substances may come into contact with the steel cap (positive electrode) and form a weak conductive loop between the battery negative electrode, thereby accelerating the self-discharge of the battery, causing the loss of electric quantity, and causing energy waste. UTILITY MODEL CONTENT

[0005] In order to solve the problems mentioned in the background art, the present application provides a rechargeable lithium battery.

[0006] The rechargeable lithium battery provided by the present application adopts the following technical scheme: a metal shell, an inner core fixedly connected to the inner wall of the metal shell, a terminal conductive module fixedly connected to the upper side of the inner core, a first conductive column fixedly connected to the upper side of the terminal conductive module, an operating frame fixedly connected to the upper side of the metal shell, a steel cap fixedly connected to the upper side of the operating frame, and a second conductive column fixedly connected to the lower side of the steel cap.

[0007] The inner wall of the operation frame is provided with linkage openings on both sides, the inner wall of the linkage openings is fixedly connected with two hollow groove blocks, the inner wall of the hollow groove blocks is slidably connected with sliding blocks, the upper side of the sliding blocks is provided with mounting openings, and the inner wall of the mounting openings is fixedly connected with conducting rods.

[0008] Optionally, the upper side of the terminal conductive module is fixedly connected with two limiting blocks, and the side close to the two limiting blocks is provided with arc-shaped grooves matched with the conducting rods.

[0009] Optionally, the two sides of the sliding block are provided with insulating pads, the insulating pads are bonded to the sliding block, and the opposite sides of the two insulating pads are provided with graffiti.

[0010] Optionally, the upper side of the steel cap is provided with a prompt groove, the inner wall of the prompt groove is fixedly connected with a prompt lamp, and the prompt lamp is matched with the terminal conductive module.

[0011] Optionally, the outer side of the metal shell is provided with a plastic shell, and the plastic shell is bonded to the metal shell.

[0012] Optionally, the inner wall of the prompt groove is provided with an acrylic plate, and the acrylic plate is fixed to the prompt groove through sealing glue.

[0013] Optionally, the side close to the hollow groove block is fixedly connected with a sealing pad, and the two sealing pads are in contact with the sliding block.

[0014] In summary, the present application has the following beneficial technical effects:

[0015] The steel cap, the conducting rod, the hollow groove block, the first conductive column and the second conductive column are arranged, when not in use, the sliding block is pushed to drive the conducting rod to move, the conducting rod is separated from the first conductive column and the second conductive column, the battery steel cap is insulated, the conductive path possibly formed by the battery and the external environment is blocked, the battery self-discharge acceleration caused by external factors is avoided, and the battery can save the maximum amount of electricity during the idle period.

[0016] The insulating pad is arranged on the opposite side of the sliding block, the insulating pad is sprayed, the user can more easily distinguish the insulation and non-insulation conditions, and the use effect of subsequent adjustment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure schematic diagram in the embodiment of the present application;

[0018] Figure 2 is a structure schematic diagram of a metal shell in the embodiment of the present application.

[0019] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a structural schematic diagram of the rear-view stereoscopic cross-section in an embodiment of this application.

[0021] Reference numerals: 1. Metal outer shell; 2. Inner core; 3. Terminal conductive module; 4. First conductive post; 5. Operating frame; 6. Steel cap; 7. Second conductive post; 8. Linkage port; 9. Sliding block; 10. Mounting port; 11. Conductive rod; 12. Limiting block; 13. Arc groove; 14. Empty groove block; 15. Insulating pad; 16. Indicator groove; 17. Indicator light; 18. Plastic outer shell; 19. Acrylic sheet; 20. Sealing gasket. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.

[0023] This application discloses a rechargeable lithium battery. For example... Figures 1-4 As shown, it includes a metal shell 1, an inner core 2 fixedly connected to the lower side of the inner wall of the metal shell 1, a terminal conductive module 3 fixedly connected to the upper side of the inner core 2, the terminal conductive module 3 is a component for conducting the inner core, not a major innovation, and will not be described in detail. A first conductive post 4 is fixedly connected to the upper side of the terminal conductive module 3, an operation frame 5 is fixedly connected to the upper side of the metal shell 1, a steel cap 6 is fixedly connected to the upper side of the operation frame 5, and a second conductive post 7 is fixedly connected to the lower side of the steel cap 6.

[0024] Please see Figure 4 The upper side of the steel cap 6 is provided with a prompting groove 16, and a prompting light 17 is fixedly connected to the inner wall of the prompting groove 16. The prompting light 17 cooperates with the terminal conductive module 3. When the terminal conductive module 3 is charging, the prompting light 17 can flash. When charging is complete, the prompting light 17 stays on to remind the personnel of the charging status.

[0025] Please see Figure 4 An acrylic plate 19 is provided on the inner wall of the prompt slot 16. The acrylic plate 19 is fixed to the prompt slot 16 with sealant. The acrylic plate 19 can protect the upper side of the prompt slot 16. The acrylic plate 19 is made of transparent material and will not affect its display.

[0026] Please see Figure 1 A plastic shell 18 is provided on the outside of the metal shell 1. The plastic shell 18 is bonded to the metal shell 1. The plastic shell 18 wraps around the outside of the metal shell 1, which can protect the outside of the metal shell 1 and increase the aesthetics of the metal shell 1.

[0027] The two sides of the inner wall of the operation block 5 are provided with linkage openings 8, the inner walls of the linkage openings 8 are fixedly connected with two hollow groove blocks 14, the inner walls of the hollow groove blocks 14 are slidably connected with sliding blocks 9, the upper sides of the sliding blocks 9 are provided with mounting openings 10, and the inner walls of the mounting openings 10 are fixedly connected with conducting rods 11.

[0028] Please refer to Figure 3 The upper side of the terminal conducting module 3 is fixedly connected with two limiting blocks 12, the proximal sides of the two limiting blocks 12 are provided with arc-shaped grooves 13 matched with the conducting rods 11, and the two limiting blocks 12 are made of elastic plastic. When the conducting rods 11 move, they can move in the two arc-shaped grooves 13 to guide and correspondingly clamp the conducting rods 11.

[0029] Please refer to Figure 2 and Figure 3 The two sides of the sliding blocks 9 are provided with insulating pads 15, the insulating pads 15 are bonded with the sliding blocks 9, the opposite sides of the two insulating pads 15 are provided with graffiti, and the user can more easily distinguish the insulation and non-insulation conditions through spraying, thereby improving the use effect of subsequent adjustment.

[0030] Please refer to Figure 3 The proximal sides of the hollow groove blocks 14 are fixedly connected with sealing pads 20, the two sealing pads 20 are in contact with the sliding blocks 9, and the sealing pads 20 are in contact with the sliding blocks 9, thereby improving the sealing property of the hollow groove blocks 14 when the sliding blocks 9 move.

[0031] The implementation principle of the rechargeable lithium battery of the embodiment of the application is as follows: when used, the inner core 2 stores electric energy, and the terminal conductive module 3 discharges the electric quantity to the conducting rod 11 and the second conductive column 7 through the first conductive column 4, realizes the communication of the steel cap 6, and realizes power supply; when not used, the conducting rod 11 is moved by pushing the sliding block 9, so that the conducting rod 11 is separated from the first conductive column 4 and the second conductive column 7, and the quick switching between the two states of “use” and “storage” of the battery is realized; when the battery needs to be used to supply power to the equipment, the battery can be normally connected to the circuit to start working by simply pushing the sliding block 9 to the position connected with the conductive area, and when the battery is idle and needs to be stored, the sliding block 9 is pushed to the position to make the steel cap 6 insulated, so that the operation process is simple and intuitive, and it is not necessary to wrap the battery with insulation material or to perform complex circuit plugging operation as in the traditional way, thereby greatly improving the convenience of use, and the application is especially suitable for the equipment frequently changing the battery, such as electric toys, wireless mice and the like; when stored, the sliding block 9 is pushed to the insulation area of the linkage opening 8, the battery steel cap 6 can be reliably insulated, the conductive path of the battery and the outside is blocked, the self-discharge of the battery caused by external factors (such as conductive impurities in dust, water vapor conduction in a humid environment and the like) is avoided, and the battery can save the maximum amount of electricity during the idle period.

[0032] By setting the insulating pad 15 on the opposite side of the sliding block 9 and spraying the insulating pad 15, the user can more easily distinguish the insulation and non-insulation conditions, and improve the use effect of subsequent adjustment.

[0033] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A rechargeable lithium battery comprising a metal casing (1), characterized in that: The inner wall lower side of the metal shell (1) is fixedly connected with an inner core (2), the upper side of the inner core (2) is fixedly connected with a terminal conductive module (3), the upper side of the terminal conductive module (3) is fixedly connected with a first conductive column (4), the upper side of the metal shell (1) is fixedly connected with an operation frame (5), the upper side of the operation frame (5) is fixedly connected with a steel cap (6), the lower side of the steel cap (6) is fixedly connected with a second conductive column (7); Both sides of the inner wall of the operation frame (5) are provided with linkage openings (8), the inner wall of the linkage opening (8) is fixedly connected with two hollow groove blocks (14), the inner wall of the hollow groove block (14) is slidably connected with a sliding block (9), the upper side of the sliding block (9) is provided with a mounting opening (10), the inner wall of the mounting opening (10) is fixedly connected with a conductive rod (11).

2. A rechargeable lithium battery according to claim 1, characterized in that: The upper side of the terminal conductive module (3) is fixedly connected with two limiting blocks (12), the side of the two limiting blocks (12) is provided with an arc-shaped groove (13) matched with the conductive rod (11).

3. A rechargeable lithium battery according to claim 1, wherein: Both sides of the sliding block (9) are provided with insulating pads (15), the insulating pads (15) and the sliding block (9) are bonded, and the opposite sides of the two insulating pads (15) are provided with graffiti.

4. The rechargeable lithium battery of claim 1, wherein: The upper side of the steel cap (6) is provided with a prompt groove (16), the inner wall of the prompt groove (16) is fixedly connected with a prompt lamp (17), and the prompt lamp (17) is matched with the terminal conductive module (3).

5. A rechargeable lithium battery according to claim 1, wherein: The outer side of the metal shell (1) is provided with a plastic shell (18), and the plastic shell (18) and the metal shell (1) are bonded.

6. A rechargeable lithium battery according to claim 4, wherein: The inner wall of the prompt groove (16) is provided with an acrylic plate (19), and the acrylic plate (19) and the prompt groove (16) are fixed by sealing glue.

7. A rechargeable lithium battery according to claim 1, wherein: The side of the hollow groove block (14) is fixedly connected with a sealing pad (20), and the two sealing pads (20) and the sliding block (9) are in contact.

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