Rechargeable lithium-ion battery

Abstract

To provide a rechargeable lithium ion battery that reduces dependency on dedicated charging equipment for the lithium ion battery and makes charging easier and more convenient. [Solution] The rechargeable lithium-ion battery comprises a housing, a cell, and a charging assembly. The housing has a storage chamber, a negative port, and a positive port, the negative port and the positive port both communicating with the storage chamber. The cell is fixedly installed in the storage chamber, and the negative end of the cell is inserted into the negative port. The charging assembly has a protective plate and a USB charging interface. The protective plate is installed in the storage chamber, and an output terminal and two connecting pieces are fixedly and electrically connected to the protective plate. The output terminal is inserted into the positive port, one connecting piece is electrically connected to the positive end of the cell and the other connecting piece is electrically connected to the negative end of the cell. The USB charging interface is fixedly and electrically connected to the protective plate. A charging port is opened through the housing, and the USB charging interface is inserted into the charging port.

Description

[Technical Field]

[0001] This application relates to the field of lithium ion batteries, and more particularly to rechargeable lithium ion batteries. [Background technology]

[0002] Lithium-ion batteries use lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. There are also dry-cell batteries, specifically alkaline and carbon batteries. When a lithium-ion battery discharges, its stored energy decreases, resulting in a corresponding drop in output voltage. While dry-cell batteries have a stable output voltage, they are prone to serious pollution and cannot be recharged multiple times, making them the mainstream. To ensure repeated use, lithium-ion batteries are typically recharged. Currently, charging most lithium-ion batteries requires specialized charging equipment, making charging a time-consuming process. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application provides a rechargeable lithium-ion battery that makes charging the lithium-ion battery easier and more convenient to reduce the dependency of the lithium-ion battery on dedicated charging equipment. [Means for solving the problem]

[0004] The rechargeable lithium-ion battery provided by this application adopts the following technical solutions:

[0005] A rechargeable lithium ion battery comprising a housing, a cell, and a charging assembly, the housing having a storage chamber, a negative electrode port, and a positive electrode port, the negative electrode port and the positive electrode port both communicating with the storage chamber, the cell being fixedly mounted in the storage chamber, and the negative electrode end of the cell being exposed through the negative electrode port; The charging assembly includes a protective plate and a USB charging interface. The protective plate is installed in the receiving chamber. An output terminal and two connecting pieces are fixedly and electrically connected to the protective plate. The output terminal is inserted into a positive port, one of the connecting pieces is electrically connected to the positive terminal of the cell, and the other connecting piece is electrically connected to the negative terminal of the cell. The USB charging interface is fixedly and electrically connected to the protective plate. A charging port extending through the housing is opened, and the USB charging interface is inserted into the charging port.

[0006] Optionally, the protection plate is integrated with an overcharge protection structure, an overdischarge protection structure, and a simulated dry battery discharge structure; The two connection pieces are both made of metallic nickel.

[0007] Optionally, the charging assembly further comprises a charging indicator, which is fixedly and electrically connected to the protective plate and is used to indicate the charging status of the lithium-ion battery.

[0008] Optionally, the charging assembly further includes a protective case, the protective case being disposed in the receiving chamber and positioned at the positive terminal of the cell, and the protective plate being connected to the protective case.

[0009] Optionally, the protective case includes two protective parts, one of which has one or more connecting grooves and the other of which has one or more connecting protrusion blocks fixed thereto, and when the two protective parts are interconnected to form the protective case, each of the connecting protrusion blocks is inserted into each of the connecting grooves.

[0010] Optionally, the protective plate may have one or more limit grooves extending therethrough. When the protective plate is connected to the protective case, the two protective parts are respectively fitted to both sides of the protective plate, and the connecting protrusion blocks are respectively inserted into the limit grooves.

[0011] Optionally, the charging assembly further includes a pad, the pad being located between the protective case and the cell, one side of the pad being in contact with the cell and the other side of the pad being in contact with the protective case.

[0012] Optionally, the charging assembly further comprises a PC sheet, the PC sheet being disposed inside the protective case, and one side of the PC sheet being connected to the protective plate.

[0013] Optionally, the housing includes an inner shell and an outer shell, the inner shell being disposed within the outer shell such that the outer shell encases the inner shell.

[0014] Optionally, the outer shell is made of PVC material and the inner shell is made of steel material. [Effects of the Invention]

[0015] As described above, the present application has at least one of the following beneficial technical effects.

[0016] When a lithium-ion battery needs to be discharged before use, it will perform output discharge via the negative terminal of the cell and the output terminal. When the lithium-ion battery has completed discharging and is running low on power and needs to be recharged, it can be electrically connected to a regular USB charging device and the USB charging interface, allowing power to be input from the USB charging interface to the protective plate, after which the two connecting pieces will complete charging of the cell. This means that there is no need to provide a separate dedicated lithium-ion battery charging device when charging a lithium-ion battery, reducing dependence on dedicated lithium-ion battery charging devices and making charging lithium-ion batteries easier and more convenient. This solves the problem of the hassle involved in charging lithium-ion batteries, as currently most lithium-ion batteries require dedicated lithium-ion battery charging devices to be used. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of the overall structure according to an embodiment of the present application. [Figure 2] 1 is a cross-sectional view of an entire structure according to an embodiment of the present invention. [Figure 3] FIG. 1 is an exploded view of the overall structure according to an embodiment of the present application. [Figure 4] 1 is a cross-sectional view of a housing structure according to an embodiment of the present application. [Figure 5] 1 is a schematic diagram of a charging assembly structure according to an embodiment of the present application. [Figure 6] 2 is a schematic diagram of a charging assembly structure according to an embodiment of the present application. [Figure 7] 1 is an exploded view of a protective case structure according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0018] The present application will now be described in more detail with reference to Figures 1-7.

[0019] 1 to 3, the rechargeable lithium-ion battery includes a housing 1, a cell 2, and a charging assembly 3. The housing 1 has a storage chamber 1a formed therein, the storage chamber 1a having a cylindrical cavity structure, a negative electrode port 1b formed therethrough at one end of the housing 1, and a positive electrode port 1c formed therethrough at the other end of the housing 1, both of which are connected to the storage chamber 1a. The cell 2 is fixedly mounted in the storage chamber 1a, and the negative terminal of the cell 2 is inserted into the negative electrode port 1b to serve as the negative terminal of the lithium-ion battery for discharging. The charging assembly 3 is mounted inside the housing 1 and is used to charge the lithium-ion battery.

[0020] Referring to FIG. 4, in the embodiment of the present application, the size of the housing 1 corresponds to the standard size of an AA dry cell battery, the housing 1 includes an inner shell 11 and an outer shell 12, the inner shell 11 is disposed inside the outer shell 12, and the outer shell 12 encases the inner shell 11. The outer shell 12 is made of PVC material, and the inner shell 11 is made of steel material, so that the housing 1 has good protective function.

[0021] 3 and 5, in the embodiment of the present application, the charging assembly 3 includes a protection plate 31 and a USB charging interface 32. The protection plate 31 is a control circuit board for controlling charging and discharging, and may be a PCM (Power Control Module) protection plate 31 in particular. The protection plate 31 is installed in the receiving chamber 1a. An output terminal 311 and two connecting pieces 312 are fixedly and electrically connected to the protection plate 31. The output terminal 311 is inserted into the positive electrode port 1c and serves as the positive terminal of the lithium-ion battery for discharging. One connecting piece 312 is electrically connected to the positive terminal of cell 2, and the other connecting piece 312 is electrically connected to the negative terminal of cell 2. Thus, when charging the lithium-ion battery, the protection plate 31 can charge cell 2 through the two connecting pieces 312. The USB charging interface 32 is fixedly and electrically connected to the protection plate 31 and passes through the housing 1. The provided charging port 1d is opened, and the USB charging interface 32 is inserted into the charging port 1d. The USB charging interface 32 is a Type-C USB charging interface 32, so that the lithium-ion battery can be charged using a Type-C charging device via the USB charging interface 32. As can be seen, the protective plate 31 is integrated with an overcharge protection structure, an over-discharge protection structure, and a simulated dry battery discharge structure, so that the lithium-ion battery can output power by simulating a 1.5V dry battery, thereby replacing the role of the 1.5V dry battery. The two connecting pieces 312 are both made of metal nickel.

[0022] 2 and 6, in a further embodiment, the charging assembly 3 further includes a protective case 33, which is disposed in the storage chamber 1a and located at the positive end of the cell 2, and the protective plate 31 is connected to the protective case 33. It can be seen that one end of the protective case 33 abuts against the positive end of the cell 2, and the other end of the protective case 33 abuts against one end of the storage chamber 1a. The structural shape of the protective case 33 is cylindrical, and the diameter size of the protective case 33 is the same as the diameter size of the cavity of the storage chamber 1a. Therefore, when the protective case 33 is disposed in the storage chamber 1a, the outer surface of the protective case 33 abuts against and fits into the cavity of the storage chamber 1a, so that the position of the protective case 33 is stable and not easily shaken.

[0023] 6 and 7, in a further embodiment, the protective housing 33 includes two protective parts 331, one of which has a plurality of connecting grooves 3312 formed therein, and the other has a plurality of connecting protrusions 3311 fixed thereto. When the two protective parts 331 are interconnected to form the protective housing 33, the connecting protrusions 3311 are inserted into the connecting grooves 3312, respectively. The protective plate 31 has one or more limiting grooves 31a extending therethrough. When the protective plate 31 is connected to the protective housing 33, the two protective parts 331 abut against both sides of the protective plate 31, respectively, and the connecting protrusions 3311 are inserted into the limiting grooves 31a, respectively. This ensures that the protective plate 31 is stably installed in the receiving chamber 1a and is less likely to move. Furthermore, unnecessary rotation of the protective plate 31 is avoided, and the position of the protective plate 31 is more stable.

[0024] 3 and 7, in a further embodiment, the charging assembly 3 further includes a charging indicator 34, a pad 35, and a PC sheet 36. The charging indicator 34 is fixed to and electrically connected to the protective plate 31 to indicate the charging status of the lithium-ion battery. When the lithium-ion battery is charging, the charging indicator 34 emits a red light. When the lithium-ion battery is fully charged, the charging indicator 34 emits a green light. The light emitted from the charging indicator 34 can be observed from the outside of the lithium-ion battery, allowing the user to easily determine and understand the charging status of the lithium-ion battery. The pad 35 is located between the protective case 33 and the cell 2. One side of the pad 35 abuts against the cell 2 and the other side abuts against the protective case 33, thereby more stably abutting the protective case 33 and the cell 2. The PC sheet 36 is located inside the protective case 33, and one side of the PC sheet 36 is connected to the protective plate 31.

[0025] The implementation principle of the rechargeable lithium-ion battery according to the embodiment of the present application is as follows: when the lithium-ion battery needs to be discharged and used, it will perform output discharge via the negative terminal of cell 2 and output terminal 311; when the lithium-ion battery is fully discharged and runs out of power and needs to be recharged, it can be electrically connected to a regular USB charging device and USB charging interface 32, through which power is input from USB charging interface 32 to protective plate 31, after which the two connecting pieces 312 complete the charging of cell 2; thus, there is no need to provide a separate dedicated lithium-ion battery charging device when charging the lithium-ion battery, reducing the dependency on dedicated lithium-ion battery charging devices, making charging the lithium-ion battery easier and more convenient. This solves the problem of the hassle involved in charging lithium-ion batteries, which currently requires the use of dedicated lithium-ion battery charging devices.

[0026] The above are preferred embodiments of the present application, and do not limit the scope of protection of the present application. Any equivalent changes made based on the structure, shape, and principle of the present application are included in the scope of protection of the present application. [Explanation of symbols]

[0027] 1, housing, 1a, storage chamber, 1b, negative electrode port, 1c, positive electrode port, 1d, charging port, 11, inner shell, 12, outer shell, 2, cell, 3, charging assembly, 31, protective plate, 311, output terminal, 312, connecting piece, 31a, limit groove, 32, USB charging interface, 33, protective case, 331, protective part, 3311, connecting protrusion block, 3312, connecting groove, 34, charging indicator, 35, pad, 36, PC sheet.

Claims

1. A rechargeable lithium ion battery comprising a housing, a cell, and a charging assembly, the housing having a storage chamber, a negative electrode port, and a positive electrode port, the negative electrode port and the positive electrode port both communicating with the storage chamber, the cell being fixedly mounted in the storage chamber, and the negative electrode end of the cell being exposed through the negative electrode port; the charging assembly comprises a protective plate and a USB charging interface, the protective plate is installed in the receiving chamber, an output terminal and two connecting pieces are fixedly and electrically connected to the protective plate, the output terminal is inserted into a positive electrode port, one of the connecting pieces is electrically connected to a positive electrode terminal of a cell and the other connecting piece is electrically connected to a negative electrode terminal of the cell, the USB charging interface is fixedly and electrically connected to the protective plate, a charging port is opened through the housing, and the USB charging interface is inserted into the charging port.

2. The protection plate has an overcharge protection structure, an overdischarge protection structure, and a simulated dry battery discharge structure integrated therein; 2. The rechargeable lithium-ion battery according to claim 1, wherein the two connecting pieces are both made of metallic nickel.

3. 2. The rechargeable lithium-ion battery of claim 1, wherein the charging assembly further comprises a charging indicator, the charging indicator being fixed and electrically connected to the protective plate and used to indicate the charging status of the lithium-ion battery.

4. 2. The rechargeable lithium-ion battery of claim 1, wherein the charging assembly further comprises a protective case, the protective case being disposed in the receiving chamber and positioned at the positive terminal of the cell, and the protective plate being connected to the protective case.

5. 5. The rechargeable lithium-ion battery of claim 4, wherein the protective case includes two protective parts, one of which has one or more connecting grooves and the other of which has one or more connecting protrusion blocks fixed thereto, and when the two protective parts are interconnected to form the protective case, each connecting protrusion block is inserted into each connecting groove.

6. 6. The rechargeable lithium-ion battery according to claim 5, wherein the protective plate has one or more limit grooves extending therethrough, and when the protective plate is connected to the protective case, the two protective parts are respectively abutted against and combined with both sides of the protective plate, and each of the connecting protrusions is inserted into each of the limit grooves.

7. 5. The rechargeable lithium-ion battery of claim 4, wherein the charging assembly further comprises a pad positioned between the protective case and the cell, one side of the pad abutting the cell and the other side of the pad abutting the protective case.

8. 5. The rechargeable lithium-ion battery of claim 4, wherein the charging assembly further comprises a PC sheet, the PC sheet being disposed inside a protective case, and one side of the PC sheet being connected to a protective plate.

9. 2. The rechargeable lithium ion battery of claim 1, wherein the housing includes an inner shell and an outer shell, the inner shell being disposed inside the outer shell and the outer shell enclosing the inner shell.

10. 10. The rechargeable lithium ion battery according to claim 9, wherein the outer shell is made of PVC and the inner shell is made of steel.

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