Built-in wireless charging coil battery

Abstract

The utility model discloses a built-in wireless charging coil battery, including battery main body and wireless subassembly, battery main body includes electric core, casing, apron and positive pole, and electric core sets up in the casing, and the positive pole sets up on the electric core, and apron installs on the casing, and wireless subassembly includes receiving coil and two outer pole lug, and the positive pole is provided with wireless installation area between the casing, and receiving coil contains in wireless installation area, and one end of two outer pole lug is connected with receiving coil respectively, and the center through -hole is seted up on apron, and the other end of two outer pole lug leads out in the center through -hole respectively, and two outer pole lug are used for electric connection external circuit board. The utility model discloses through introducing two outer pole lug and the receiving coil of connecting with two outer pole lug, so that when the battery is placed on the transmitting coil of external wireless charging, can utilize electromagnetic induction principle to realize wireless power generation to the receiving coil of battery, to realize wireless charging to the battery.

Description

Technical Field

[0001] This utility model relates to the field of steel-cased battery structures, and in particular to a battery with a built-in wireless charging coil. Background Technology

[0002] A typical steel-cased battery structure includes: outer casing, top and bottom covers, positive electrode, negative electrode, separator, electrolyte, PTC element, gasket, safety valve, etc. Generally speaking, the battery casing is the negative electrode, and the cover is the positive electrode. The battery casing is made of nickel-plated steel sheet.

[0003] In the production process of steel-cased batteries, the parallel assembly of cylindrical steel-cased batteries requires multiple laser welding operations. However, because the positive electrode tabs are relatively soft and thin, excessive welding can easily burn and damage the tabs, preventing the battery from supplying power properly. If a wireless charging structure is to be incorporated into the steel-cased battery structure, how to achieve wireless assembly and wireless charging functionality is a problem that those skilled in the art need to consider. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a battery with a built-in wireless charging coil.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A battery with a built-in wireless charging coil includes: a battery body and a wireless component.

[0007] The battery body includes a battery cell, a casing, a cover plate, and a positive electrode post. The battery cell is disposed inside the casing, the positive electrode post is disposed on the battery cell, and the cover plate is mounted on the casing.

[0008] The wireless component includes a receiving coil and two external tabs. A wireless mounting area is provided between the positive terminal and the housing. The receiving coil is housed in the wireless mounting area. One end of each of the two external tabs is connected to the receiving coil. A central through hole is provided on the cover plate. The other ends of the two external tabs are led out of the central through hole. The two external tabs are used for electrical connection to an external circuit board.

[0009] In one embodiment, the wireless component further includes an insulating adhesive disposed between the cover plate and the positive electrode post, and the insulating adhesive wraps around the two outer tabs, with the receiving coil attached to the side of the insulating adhesive away from the cover plate.

[0010] In one embodiment, two receiving cavities are formed on the insulating adhesive, and the two outer electrodes are respectively housed in the two receiving cavities.

[0011] In one embodiment, in one of the outer electrodes, the outer electrode includes an outward protrusion, an extension, and a connecting portion. The extension is connected to the outward protrusion and the connecting portion, respectively. The connecting portion is used to connect to a receiving coil. The extension is housed in the receiving cavity. The outward protrusion is used to pass through the central through hole and is exposed on the cover plate.

[0012] In one embodiment, the cross-sections of the protrusion and the extension have a first included angle A, and the cross-sections of the connecting portion and the extension have a second included angle B.

[0013] In one embodiment, after the protrusion, the extension, and the connecting portion are connected, their cross-section is Z-shaped.

[0014] In one embodiment, a conductive through hole is formed on the insulating adhesive, and the conductive through hole is coaxially arranged with the central through hole;

[0015] The positive electrode post is provided with a protruding structure, and the protruding structure of the positive electrode post passes through the conductive through hole and the central through hole in sequence.

[0016] In one embodiment, the two outer tabs are symmetrically disposed on the positive electrode post.

[0017] In one embodiment, the battery body further includes a positive electrode tab and a negative electrode tab, the positive electrode tab being disposed between the battery cell and the positive electrode post, and the negative electrode tab being disposed between the battery cell and the casing.

[0018] In one embodiment, the two outer tabs are mounted on the positive electrode post by integral hot-pressing with insulating adhesive, and the receiving coil is hot-pressed onto the insulating adhesive.

[0019] The advantages and beneficial effects of this utility model compared to the prior art are as follows:

[0020] This invention relates to a battery with a built-in wireless charging coil. By introducing two additional external tabs, the positive and negative tabs of the battery itself can be protected from damage during external or wireless welding, improving safety and reliability. Furthermore, a receiving coil connected to the two external tabs is provided, allowing the battery to wirelessly generate power for the receiving coil using electromagnetic induction when placed on the external wireless charging transmitting coil. This power is then conducted through the two external tabs to an external circuit board and converted into direct current. The direct current is then input to the battery cell through the positive and negative terminals to complete the charging process, thus achieving wireless charging of the battery. Attached Figure Description

[0021] Figure 1This is an exploded view of the built-in wireless charging coil battery according to one embodiment of the present invention.

[0022] Figure 2 for Figure 1 The diagram shows the structure of the battery with a built-in wireless charging coil.

[0023] Figure 3 for Figure 1 The diagram shows the structure of the battery with a built-in wireless charging coil.

[0024] Figure 4 for Figure 1 The diagram shows the structure of the battery with a built-in wireless charging coil.

[0025] The accompanying diagrams are labeled as follows:

[0026] 10. Battery body; 11. Cell; 12. Casing; 13. Cover plate; 14. Positive terminal post; 15. Positive electrode tab; 16. Negative electrode tab; 20. Wireless component; 21. Receiver coil; 22. Outer tab; 221. Outer protrusion; 222. Extension; 223. Connecting part; 23. Insulating adhesive. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] Please see Figures 1-4 A battery with a built-in wireless charging coil includes a battery body 10 and a wireless component 20. It should be noted that the battery body 10 is a battery structure, which mainly serves the functions of energy storage and power supply; the wireless component 20 is used to receive induction from an external power generation coil to realize inductive power generation and wireless charging of the battery.

[0029] Please see Figure 1 and Figure 2 The battery body 10 includes a cell 11, a casing 12, a cover plate 13, and a positive electrode post 14. The cell 11 is disposed inside the casing 12, the positive electrode post 14 is disposed on the cell 11, and the cover plate 13 is mounted on the casing 12. It should be noted that the cell 11 is used to realize energy storage; the casing 12 is used to protect the battery body 10 and prevent external environment from damaging the battery interior; the cover plate 13 is used to form an integral battery structure with the casing 12 to improve safety; and the positive electrode post 14 is used to serve as a positive electrode connection.

[0030] Please see Figure 1 The wireless component 20 includes a receiving coil 21 and two external tabs 22. A wireless mounting area is provided between the positive terminal 14 and the housing 12. The receiving coil 21 is housed within the wireless mounting area. One end of each of the two external tabs 22 is connected to the receiving coil 21. A central through hole is provided on the cover plate 13, and the other ends of each of the two external tabs 22 extend out of the central through hole. The two external tabs 22 are used for electrical connection to an external circuit board. It should be noted that the receiving coil 21 receives the wireless induced current from an external transmitting coil and converts the induced current into direct current through the connection to the external circuit board via the two external tabs 22. The external tabs 22 are used for electrical connection to the external circuit board to achieve the conversion of the induced current to direct current after transmission to the external circuit board.

[0031] Thus, by introducing two additional external tabs 22, the positive and negative tabs 16 of the battery itself can be prevented from being damaged during external welding or wireless welding, improving safety and reliability. Furthermore, a receiving coil 21 connected to the two external tabs 22 is provided, so that when the battery is placed on the transmitting coil of the external wireless charging, the receiving coil 21 of the battery can be wirelessly powered by electromagnetic induction. The power is then conducted to the external circuit board through the two external tabs 22 and converted into DC power. The DC power is then input to the battery cell 11 through the positive and negative terminals to complete the charging, thereby realizing wireless charging of the battery.

[0032] Please see Figure 1 and Figure 3 The wireless component 20 also includes insulating adhesive 23, which is disposed between the cover plate 13 and the positive electrode post 14, and wraps around the two outer tabs 22. The receiving coil 21 is attached to the side of the insulating adhesive 23 away from the cover plate 13. It should be noted that the insulating adhesive 23 serves as insulation and protection, and also adheres to the two outer tabs 22, allowing the outer tabs 22 to be led out to the cover plate 13 through the insulating adhesive 23 for electrical connection with an external circuit board.

[0033] It is understood that the insulating adhesive 23 has two receiving cavities, and the two outer electrodes 22 are respectively housed in the two receiving cavities. In this way, the two receiving cavities can completely enclose the two outer electrodes 22, and the two outer electrodes 22 are enclosed in the insulating adhesive 23, thereby improving the protective effect.

[0034] Please see Figure 1In one of the outer tabs 22, the outer tab 22 includes a protrusion 221, an extension 222, and a connecting portion 223. The extension 222 is connected to both the protrusion 221 and the connecting portion 223. The connecting portion 223 is used to connect to the receiving coil 21. The extension 222 is housed within the receiving cavity. The protrusion 221 passes through the central through hole and is exposed on the cover plate 13. It should be noted that the protrusion 221 protrudes from the battery cover plate 13 to connect to an external circuit board; the extension 222 connects the protrusion 221 and the connecting portion 223.

[0035] Please see Figure 1 and Figure 4 The cross-sections of the protruding portion 221 and the extension portion 222 have a first included angle A, and the cross-sections of the connecting portion 223 and the extension portion 222 have a second included angle B. It should be noted that the angle of the first included angle A is 70° to 120°, preferably 90°; the angle of the second included angle B is 70° to 120°, preferably 90°. Further, after the protruding portion 221, the extension portion 222, and the connecting portion 223 are connected, their cross-sections form a "Z" shape. Thus, by setting a certain angle between the first and second included angles, the outer electrode 22 can be more securely installed between the cover plate 13 and the positive electrode post 14, further making the connection with the receiving coil 21 more stable.

[0036] Furthermore, the insulating adhesive 23 has conductive through holes, which are coaxially arranged with the central through hole; the positive electrode post 14 has a protruding structure, which passes through the conductive through hole and the central through hole in sequence. Thus, by providing conductive through holes and a central through hole, the protruding structure on the positive electrode post 14 can be passed through, facilitating electrical connection with the outside world, thereby enabling external power supply or internal battery charging.

[0037] In this embodiment, the two outer tabs 22 are symmetrically arranged on the positive electrode post 14. This symmetrical arrangement of the outer tabs 22 makes the electrical connection more stable. The two outer tabs 22 are installed on the positive electrode post 14 by integrally heat-pressing with insulating adhesive, and the receiving coil 21 is heat-pressed onto the insulating adhesive 23. This integral heat-pressing method with insulating adhesive 23 improves the reliability of the installation.

[0038] It should be noted that the battery body 10 also includes a positive electrode tab 15 and a negative electrode tab 16. The positive electrode tab 15 is disposed between the battery cell 11 and the positive electrode post 14, and the negative electrode tab 16 is disposed between the battery cell 11 and the casing 12. Thus, by providing the positive electrode tab 15 and the negative electrode tab 16, the battery can perform power transmission and charging energy storage transmission.

[0039] The built-in wireless charging coil battery of this utility model also needs to be electrically connected to an external circuit board and inductively connected to an external transmitting coil. The main feature is that the external transmitting coil can be inductively connected to the receiving coil inside the battery to generate induced electricity. Then, the circuit board converts the induced electricity into direct current and charges the battery to achieve wireless charging.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery with a built-in wireless charging coil, characterized in that, include: The battery body (10) includes a battery cell (11), a housing (12), a cover plate (13), and a positive electrode post (14). The battery cell (11) is disposed inside the housing (12), the positive electrode post (14) is disposed on the battery cell (11), and the cover plate (13) is mounted on the housing (12). The wireless component (20) includes a receiving coil (21) and two external tabs (22). A wireless mounting area is provided between the positive terminal post (14) and the housing (12). The receiving coil (21) is housed in the wireless mounting area. One end of each of the two external tabs (22) is connected to the receiving coil (21). A central through hole is provided on the cover plate (13). The other ends of the two external tabs (22) are led out from the central through hole. The two external tabs (22) are used for electrical connection to an external circuit board.

2. The built-in wireless charging coil battery according to claim 1, characterized in that, The wireless component (20) also includes an insulating adhesive (23), which is disposed between the cover plate (13) and the positive electrode post (14), and the insulating adhesive (23) wraps around the two outer tabs (22), and the receiving coil (21) is attached to the side of the insulating adhesive (23) away from the cover plate (13).

3. The built-in wireless charging coil battery according to claim 2, characterized in that, Two receiving cavities are formed on the insulating adhesive (23), and the two outer electrodes (22) are respectively housed in the two receiving cavities.

4. The built-in wireless charging coil battery according to claim 3, characterized in that, In one of the outer tabs (22), the outer tab (22) includes an outward protrusion (221), an extension (222) and a connecting portion (223). The extension (222) is connected to the outward protrusion (221) and the connecting portion (223) respectively. The connecting portion (223) is used to connect to the receiving coil (21). The extension (222) is housed in the receiving cavity. The outward protrusion (221) is used to pass through the central through hole and is exposed on the cover plate (13).

5. The built-in wireless charging coil battery according to claim 4, characterized in that, The cross-sections of the protruding portion (221) and the extension portion (222) have a first included angle A, and the cross-sections of the connecting portion (223) and the extension portion (222) have a second included angle B.

6. The built-in wireless charging coil battery according to claim 4, characterized in that, After the protruding part (221), the extension part (222), and the connecting part (223) are connected, their cross-section is "Z" shaped.

7. The built-in wireless charging coil battery according to claim 2, characterized in that, The insulating adhesive has conductive through holes, which are coaxially arranged with the central through hole. The positive electrode post (14) is provided with a protruding structure, and the protruding structure of the positive electrode post (14) passes through the conductive through hole and the central through hole in sequence.

8. The built-in wireless charging coil battery according to claim 2, characterized in that, The two outer tabs (22) are symmetrically arranged on the positive electrode post (14).

9. The built-in wireless charging coil battery according to claim 1, characterized in that, The battery body (10) also includes a positive electrode tab (15) and a negative electrode tab (16). The positive electrode tab (15) is disposed between the battery cell (11) and the positive electrode post (14), and the negative electrode tab (16) is disposed between the battery cell (11) and the casing (12).

10. The built-in wireless charging coil battery according to claim 2, characterized in that, The two outer tabs (22) are installed on the positive electrode post (14) by integral hot pressing with insulating glue, and the receiving coil (21) is hot-pressed onto the insulating glue.

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