Reusable rechargeable lithium battery

Abstract

The utility model provides a reusable rechargeable lithium battery. The reusable rechargeable lithium battery mainly comprises a tail plate structure, a steel shell structure and a head plate structure, the tail plate structure has a three-stage polarity design, and a central bonding pad anode, a middle circular ring cathode and an outer ring hardware sheet anode are respectively used as the anode and the cathode of the battery. The tripolar design not only improves the electrical performance of the battery, but also can realize the charging function of the battery through the circular ring cathode and the bonding pad anode. The steel shell structure protects the battery, and the head plate structure provides protection functions of over-charge, over-discharge, over-current and the like.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and more specifically, to a reusable rechargeable lithium battery. Background Technology

[0002] With the rapid development of lithium battery technology, lithium batteries are widely used in various products such as portable electronic devices, power tools, and flashlights. However, traditional lithium battery designs typically employ a two-polarity structure, namely a positive and a negative electrode. While this design can meet basic electrical requirements, it exhibits certain limitations in some specific application scenarios.

[0003] In a two-polarity design, the positive and negative terminals of a battery are electrically connected through a single positive and negative terminal. This structure suffers from low efficiency and limited contact area during charging and discharging, especially in scenarios requiring high power output or frequent charging, where the stability of the electrical connection is insufficient.

[0004] In addition, traditional bipolar batteries require an additional independent charging interface, making it impossible to charge and discharge through the same terminal, which poses challenges to battery design and device compatibility. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a reusable rechargeable lithium battery to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A reusable rechargeable lithium battery includes a tail plate structure, which includes a solder pad positive electrode, a circular annular negative electrode, a metal sheet positive electrode, and a solder pad gap. The solder pad positive electrode has a solder pad gap on its outer ring, the solder pad gap has a circular annular negative electrode on its outer ring, and the circular annular negative electrode has a metal sheet positive electrode spaced apart on its outer ring. The metal sheet positive electrode is connected to a steel shell structure, and the steel shell structure is connected to a head plate structure. An LED light is provided on the head plate structure.

[0008] Furthermore, the steel shell structure includes a steel outer shell and connecting lugs, with the connecting lugs provided at one end of the steel outer shell.

[0009] Furthermore, the head board structure includes a bracket, a PCB board, head barley paper, contact pads, head current collectors, pressure relief holes, a C-interface, and a disassembly spring. The bracket is equipped with a PCB board, which is covered with head barley paper. The head barley paper has three slots. Three sets of contact pads are located on the PCB board opposite to the slots. The head current collector is located at the center of one end of the PCB board. The pressure relief hole is located on the PCB board. The LED light is connected to the PCB board. A C-interface is located on one side of the PCB board. A disassembly spring is located between the bracket and the PCB board. The connecting ear matches the contact pad. An insulating pad is adhered to the head barley paper. The insulating pad and the head barley paper have lamp holes. The pressure relief hole is connected to a pressure relief structure.

[0010] Furthermore, the pressure relief structure includes a connecting groove, a fixed plate, a first spring, a pressure relief plate, an adjusting rod, a second spring, a disassembly plate, a positioning rod, and a threaded hole. The fixed plate is fixedly connected in the connecting groove, and a pressure relief port is opened in the center of the fixed plate. The adjusting rod is fixedly connected to the fixed plate, and the pressure relief plate is slidably connected to the adjusting rod. A first spring is provided between the pressure relief plate and the fixed plate. A limiting plate is provided in the connecting groove, and a second spring is provided between the limiting plate and the pressure relief plate. The disassembly plate is fixedly connected to the pressure relief plate, and a threaded hole is opened on one side of the disassembly plate. A positioning rod is fixedly connected to one side of the disassembly plate.

[0011] The beneficial effects of the utility model are:

[0012] 1. This utility model features a three-stage polarity design in its tail plate structure. The central solder pad (positive), the middle circular ring (negative), and the outer metal plate (positive) are used for different electrical connection methods, better adapting to the needs of different devices and improving charging and discharging efficiency and stability. This three-stage polarity design also supports battery charging via the circular ring negative and the solder pad positive, simplifying the design of the charging interface. The steel shell structure provides protection for the battery, preventing physical damage.

[0013] 2. The PCB board in the head board structure integrates overcharge, over-discharge, and overcurrent protection functions to ensure the safety of the battery during use. The C interface can be used for charging and discharging the battery.

[0014] 3. The pressure relief structure effectively prevents the battery from rupturing or exploding due to excessive gas pressure through staged pressure relief. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of a reusable rechargeable lithium battery according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the tail plate structure of a reusable rechargeable lithium battery according to an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the steel shell structure of a reusable rechargeable lithium battery according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the head plate structure of a reusable rechargeable lithium battery according to an embodiment of the present utility model.

[0020] Figure 5 This is a schematic diagram of a pressure relief structure for a reusable rechargeable lithium battery according to an embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of a mounting plate for a reusable rechargeable lithium battery according to an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of a pressure relief plate for a reusable rechargeable lithium battery according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Tail plate structure; 101. Positive pad; 102. Negative ring; 103. Positive metal sheet; 104. Pad gap; 2. Steel shell structure; 201. Steel outer shell; 202. Connecting ear; 3. Head plate structure; 301. Bracket; 302. PCB board; 303. Head barley paper; 304. Contact pad; 305. Head current collector; 306. Lamp hole; 307. C interface; 308. Removal spring; 309. LED light; 310. Pressure relief hole; 4. Pressure relief structure; 401. Connecting groove; 402. Fixing plate; 403. First spring; 404. Pressure relief plate; 405. Adjusting rod; 406. Second spring; 407. Removal plate; 408. Positioning rod; 409. Threaded hole; 5. Insulating pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] According to an embodiment of the present invention, a reusable rechargeable lithium battery is provided.

[0027] Example 1;

[0028] like Figure 1-7 As shown, the reusable rechargeable lithium battery according to an embodiment of the present invention includes a tail plate structure 1. The tail plate structure 1 includes a solder pad positive electrode 101, a circular annular negative electrode 102, a metal sheet positive electrode 103, and a solder pad gap 104. The solder pad positive electrode 101 is provided with a solder pad gap 104 on its outer ring, and the solder pad gap 104 is provided with a circular annular negative electrode 102 on its outer ring. The circular annular negative electrode 102 is provided with a metal sheet positive electrode 103 at intervals on its outer ring. The metal sheet positive electrode 103 is fixedly connected to a steel shell structure 2. The steel shell structure 2 is connected to a head plate structure 3. An LED light 309 is provided on the head plate structure 3.

[0029] The tail plate structure 1 has three polarities: the positive electrode 101 of the center solder pad is the positive electrode of the battery, the negative electrode 102 of the middle ring is the negative electrode of the battery, the positive electrode 103 of the outer metal plate is the positive electrode of the battery, the copper pillar at the center of the protective positive electrode connects to the current collector 305 of the head, and the three contact pads 304 are nickel plates, which are also positive electrodes of the battery. The steel shell 201 is used to protect the battery and connects the contact pads 304, the nickel plates, and the outer ring of the positive electrode 103 of the metal plate structure 1 through the connecting ear 202. The battery can be charged by the negative ring 102 and the ring of the positive electrode 101 when it is installed in the flashlight.

[0030] The steel shell structure 2 includes a steel outer shell 201 and a connecting lug 202, with the connecting lug 202 provided at one end of the steel outer shell 201.

[0031] The head board structure 3 includes a bracket 301, a PCB board 302, a head barley paper 303, contact pads 304, a head current collector 305, a pressure relief hole 310, a C-interface 307, and a disassembly spring 308. The bracket 301 has the PCB board 302 mounted on it, and the head barley paper 303 covers the PCB board 302. The head barley paper 303 has three slots. Three sets of contact pads 304 are positioned on the PCB board 302 opposite to the slots. A central point at one end of the PCB board 302 is... The head current collector 305 has a pressure relief hole 310 on the PCB board 302, the LED light 309 is connected to the PCB board 302, a C interface 307 is provided on one side of the PCB board 302, a disassembly spring 308 is provided between the bracket 301 and the PCB board 302, the connecting ear 202 matches the contact pad 304, an insulating pad 5 is glued to the head barley paper 303, the insulating pad 5 and the head barley paper 303 have a lamp hole 306, and the pressure relief hole 310 is connected to a pressure relief structure 4.

[0032] Bracket 301 is used to mount PCB board 302, which is also called a protection board. Its main functions are as follows:

[0033] Overcharge protection: When the battery reaches full charge, the charging current is cut off to prevent the battery from being damaged or causing a fire due to overcharging.

[0034] Over-discharge protection: When the battery discharges to the lowest voltage level, the discharge stops to prevent irreversible damage caused by deep discharge.

[0035] Overcurrent protection: In the event of a short circuit or other abnormally high current, the circuit is cut off to protect the battery and other devices.

[0036] Temperature monitoring: Equipped with temperature monitoring function to prevent the battery from operating at excessively high or low temperatures.

[0037] The barley paper 303 at the head is mainly used for insulation. The pressure relief hole 310, together with the pressure relief structure 4, relieves the pressure of the battery to prevent the battery from cracking and exploding due to thermal expansion. The C interface 307 is a conventional Type-C interface, used to connect to a power source or electrical appliance via a Type-C data cable for charging and discharging the battery. The disassembly spring 308 is used to allow the PCB board 302 to pop out easily after the connector ear 202 is disassembled from the contact pad 304, improving disassembly efficiency. The LED light 309 is mainly a charging indicator light, installed in the lamp hole 306. When the battery is charging, the light is red; when the battery is fully charged, the light is green. The light emitted by the LED light shines through the lamp hole 306, thus serving as an indicator light.

[0038] The pressure relief structure 4 includes a connecting groove 401, a fixed plate 402, a first spring 403, a pressure relief plate 404, an adjusting rod 405, a second spring 406, a disassembly plate 407, a positioning rod 408, and a threaded hole 409. The fixed plate 402 is fixedly connected in the connecting groove 401. A pressure relief port is opened in the center of the fixed plate 402. The adjusting rod 405 is fixedly connected to the fixed plate 402. The pressure relief plate 404 is slidably connected to the adjusting rod 405. The first spring 403 is provided between the pressure relief plate 404 and the fixed plate 402. A limiting plate is provided in the connecting groove 401. The second spring 406 is provided between the limiting plate and the pressure relief plate 404. The disassembly plate 407 is fixedly connected to the pressure relief plate 404. A threaded hole 409 is opened on one side of the disassembly plate 407. The positioning rod 408 is fixedly connected to one side of the disassembly plate 407.

[0039] There are four adjusting rods 405, each with a different length, decreasing clockwise. The pressure relief plate 404 has slots that match the adjusting rods 405. The main pressure relief port of the fixed plate 402 is the main pressure relief port. Due to the combined action of the first spring 403 and the second spring 406, when the battery is in its normal state and does not require pressure relief, three of the pressure relief slots on the pressure relief plate 404 are blocked by the adjusting rods 405, leaving only the shortest adjusting rod 405 unblocked. When the battery pressure relief increases, the pressure relief plate 404 slides on the adjusting rods 405 due to the gas pressure. Each time it slides outward a certain distance, one more pressure relief slot is opened, thus achieving the function of graded pressure relief. At the same time, it can prevent debris from entering the pressure relief slots and blocking them, improving the connectivity of the pressure relief slots and reducing the risk of blockage.

[0040] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0041] In summary, with the help of the above-mentioned technical solution of this utility model, the tail plate structure 1 has three polarities: the positive electrode 101 of the center solder pad is the positive electrode of the battery, the negative electrode 102 of the middle ring is the negative electrode of the battery, the positive electrode 103 of the outer ring metal sheet is the positive electrode of the battery, the copper pillar at the center of the protective positive electrode connects to the current collector 305 at the head of the battery, and the three contact pads 304 are nickel sheets, which are also positive electrodes of the battery. The steel shell 201 is used to protect the battery and connects the contact pads 304 and the nickel sheets of the positive electrode through the connecting ears 202. The tail plate structure 1 includes a metal plate with a positive electrode 103 and an outer ring. The battery, when inserted into the flashlight, can be charged via the negative ring 102 and the positive pad 101. The head barley paper 303 is primarily used for insulation. The pressure relief hole 310, in conjunction with the pressure relief structure 4, relieves pressure on the battery, preventing rupture and explosion due to thermal expansion. The C interface 307 is a standard Type-C interface, used to connect to a power source or appliance via a Type-C data cable for charging and discharging the battery. The disassembly spring 3... 08 is used to facilitate the easy ejection of the PCB board 302 after the contact pad 304 is removed from the connecting ear 202, improving disassembly efficiency. There are four adjusting rods 405, each with a different length, decreasing clockwise. The pressure relief plate 404 has slots that match the adjusting rods 405. The pressure relief port of the fixed plate 402 is the main pressure relief port. Due to the combined action of the first spring 403 and the second spring 406, when the battery is in normal condition and does not need to be depressurized, three of the pressure relief slots of the pressure relief plate 404 are blocked by the adjusting rods 405, leaving only the shortest adjusting rod 405 unblocked. When the battery pressure relief increases, the pressure relief plate 404 slides on the adjusting rods 405 due to the gas pressure. Each time it slides outward a certain distance, one more pressure relief slot is opened, thus achieving the function of graded pressure relief. At the same time, it can prevent debris from entering the pressure relief slots and blocking them, improving the connectivity of the pressure relief slots and reducing the risk of blockage.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reusable rechargeable lithium battery, characterized in that, The device includes a tail plate structure (1), which includes a positive pad (101), a circular negative pad (102), a metal sheet positive pad (103), and a pad gap (104). The positive pad (101) has a pad gap (104) on its outer ring, and the negative pad (102) has a circular negative pad (102) on its outer ring. The negative pad (102) has a metal sheet positive pad (103) spaced apart on its outer ring. The metal sheet positive pad (103) is connected to a steel shell structure (2), and the steel shell structure (2) is connected to a head plate structure (3). The head plate structure (3) is equipped with an LED light (309).

2. The reusable rechargeable lithium battery according to claim 1, characterized in that, The steel shell structure (2) includes a steel outer shell (201) and a connecting lug (202), with the connecting lug (202) provided at one end of the steel outer shell (201).

3. A reusable rechargeable lithium battery according to claim 2, characterized in that, The head plate structure (3) includes a bracket (301), a PCB board (302), a head barley paper (303), a contact pad (304), a head current collector (305), a pressure relief hole (310), a C interface (307), and a disassembly spring (308). The bracket (301) is provided with a PCB board (302), and the PCB board (302) is covered with a head barley paper (303). The head barley paper (303) has three slots.

4. A reusable rechargeable lithium battery according to claim 3, characterized in that, Three sets of contact pads (304) are provided on the PCB board (302) at positions corresponding to the slots. A head current collector (305) is provided at the center of one end of the PCB board (302). A pressure relief hole (310) is provided on the PCB board (302). The LED light (309) is connected to the PCB board (302). A C interface (307) is provided on one side of the PCB board (302). A disassembly spring (308) is provided between the bracket (301) and the PCB board (302). The connecting ear (202) matches the contact pads (304). An insulating pad (5) is adhered to the head barley paper (303). A lamp hole (306) is provided on the insulating pad (5) and the head barley paper (303). A pressure relief structure (4) is connected to the pressure relief hole (310).

5. A reusable rechargeable lithium battery according to claim 4, characterized in that, The pressure relief structure (4) includes a connecting groove (401), a fixed plate (402), a first spring (403), a pressure relief plate (404), an adjusting rod (405), a second spring (406), a disassembly plate (407), a positioning rod (408), and a threaded hole (409). The fixed plate (402) is fixedly connected in the connecting groove (401), and a pressure relief port is opened in the center of the fixed plate (402).

6. A reusable rechargeable lithium battery according to claim 5, characterized in that, An adjusting rod (405) is fixedly connected to the fixed plate (402), and a pressure relief plate (404) is slidably connected to the adjusting rod (405). A first spring (403) is provided between the pressure relief plate (404) and the fixed plate (402), and a limiting plate is provided in the connecting groove (401).

7. A reusable rechargeable lithium battery according to claim 6, characterized in that, A second spring (406) is provided between the limiting plate and the pressure relief plate (404). A disassembly plate (407) is fixedly connected to the pressure relief plate (404). A threaded hole (409) is provided on one side of the disassembly plate (407). A positioning rod (408) is fixedly connected to one side of the disassembly plate (407).

Images