A wireless charging battery device and a charging stand

Abstract

The present invention discloses a wireless charging battery device and a charging stand. The battery device comprises a battery body, a power receiving coil, a PCM element and a shell, wherein the battery body, the power receiving coil and the PCM element are arranged in the shell, or the battery body and the PCM element are arranged in the shell, and the power receiving coil is arranged outside the shell; the positive terminal and the negative terminal of the power receiving coil are respectively connected to the positive electrode collector and the negative electrode collector of the battery body through the PCM element.

Description

Technical Field

[0001] The present invention relates to the technical field of energy conversion, and more specifically, to a wireless charging battery device and a charging stand. Background Art

[0002] Wireless charging systems usually include a power transmission coil and a power receiving coil. The power transmission coil is usually integrated into an external charging station. The power receiving coil is usually integrated into electronic devices, such as mobile phones, tablet computers, laptops, etc. The power receiving coil is connected to the battery. When charging, the power transmission coil and the power receiving coil are placed opposite to each other. The power transmission coil passes alternating current of a certain frequency, and generates an induced current in the power receiving coil through electromagnetic induction, thereby transferring energy from the charging station to the battery.

[0003] Existing batteries are usually independently set, such as cylindrical batteries, button batteries, etc. This type of battery can only be powered by contact and does not have the function of wireless charging.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0005] An object of the present invention is to provide a new technical solution for a wireless charging battery device.

[0006] According to a first aspect of the present invention, a wireless charging battery device is provided. The battery device comprises a battery body, a power receiving coil, a PCM element and a shell, wherein the battery body, the power receiving coil and the PCM element are arranged in the shell, or the battery body and the PCM element are arranged in the shell, and the power receiving coil is arranged outside the shell; the positive terminal and the negative terminal of the power receiving coil are respectively connected to the positive current collector and the negative current collector of the battery body through the PCM element.

[0007] Optionally, an insulating cover is further included, a surface of which is provided with a receiving cavity, and the power receiving coil is arranged in the receiving cavity.

[0008] Optionally, the battery body includes a first end and a second end opposite to the first end, and the cap of the battery body is arranged at the first end, wherein the power receiving coil and the PCM element are arranged at the first end, and the power receiving coil is located between the PCM and the battery body; or the power receiving coil is arranged at the first end, and the PCM element is arranged at the second end.

[0009] Optionally, the battery body includes a cylindrical shell, wherein the power receiving coil is arranged on a side wall of the cylindrical shell.

[0010] Optionally, the power receiving coil is cylindrical and is arranged around the side wall.

[0011] Optionally, the power receiving coil has a curved structure and is attached to the side wall.

[0012] Optionally, the power receiving coil has a serpentine structure.

[0013] Optionally, the power receiving coil is formed by laser etching or vapor deposition.

[0014] Optionally, the PCM element has a via hole, and at least one of the positive electrode current collector and the negative electrode current collector is inserted into the corresponding via hole.

[0015] Optionally, the battery body, the power receiving coil and the PCM element are arranged in the housing, the PCM element includes a first surface on which a functional element is installed and a second surface opposite to the first surface, and the power receiving coil is formed on the second surface by etching or vapor deposition.

[0016] According to another aspect of the present disclosure, a charging stand is provided, which includes a main body and a power transmission coil, wherein the main body has a cavity, the power transmission coil is arranged around the side wall of the cavity, and the charging stand is used to charge a wireless charging battery device in which the power receiving coil is arranged on the side wall of the cylindrical shell, and the wireless charging battery device is inserted into the cavity.

[0017] According to an embodiment of the present disclosure, the wireless charging battery device is an integrated structure, that is, the battery body and the power receiving coil are integrated together. The battery device can be wirelessly charged through an external charging stand.

[0018] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1 is an exploded view of a wireless charging battery device according to an embodiment of the present disclosure.

[0021] Figure 2 is a cross-sectional view of a wireless charging battery device according to an embodiment of the present disclosure.

[0022] Figure 3 is an exploded view of another wireless charging battery device according to an embodiment of the present disclosure.

[0023] Figure 4 is a cross-sectional view of another wireless charging battery device according to an embodiment of the present disclosure.

[0024] Figure 5 is an exploded view of a third wireless charging battery device according to an embodiment of the present disclosure.

[0025] Figure 6 is an exploded view of a fourth wireless charging battery device according to an embodiment of the present disclosure.

[0026] Description of reference numerals:

[0027] 11: PCM element; 12: via; 13: power receiving coil; 14: positive terminal; 15: negative terminal; 16: positive current collector; 17: negative current collector; 18: cap; 19: shell; 20: outer shell; 21: insulating cover; 22: side wall; 23: serpentine structure; 24: receiving cavity; 25: battery cell; 26: core column. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] According to one embodiment of the present disclosure, a wireless charging battery device is provided. Figure 1-2As shown, the wireless charging device includes a battery body, a power receiving coil 13, a PCM element 11 and a housing 20. The battery body, the power receiving coil 13 and the PCM element 11 are arranged in the housing 20, or the battery body and the PCM element 11 are arranged in the housing 20, and the power receiving coil 13 is arranged outside the housing 20. The positive terminal 14 and the negative terminal 15 of the power receiving coil 13 are respectively connected to the positive electrode collector 16 and the negative electrode collector 17 of the battery body through the PCM element 11. The power receiving coil 13 induces the power transmission coil on the charging base to generate an induced current, thereby charging the battery body.

[0034] For example, Figure 2 As shown, the wireless charging battery device is a lithium-ion battery device. The battery body includes a shell 19, a stem 26, and a battery cell 25 wound outside the stem 26. The shell 19 is cylindrical. One end of the shell 19 is closed and the other end is open. The stem 26 and the battery cell 25 are arranged in the shell 19. The material of the battery cell 25 is common knowledge in the art and is not described in detail here. A cap 18 is provided at the open end of the shell 19. The shell 19 is a conductor. The shell 19 and the cap 18 are insulated. The cap 18 is connected to the positive electrode material of the battery cell 25, and the cap 18 serves as the positive electrode of the battery body; the shell 19 is connected to the negative electrode material of the battery cell 25, and the shell 19 serves as the negative electrode of the battery body.

[0035] For example, the power receiving coil 13 is wound by enameled wire. Figure 1 , 5 As shown in FIG. 6 , the power receiving coil 13 is a spiral structure or a serpentine winding structure 23. The spiral structure includes a planar spiral structure or a three-dimensional spiral structure. The whole serpentine winding structure 23 is a planar shape, a three-dimensional shape, an arc shape, etc. The enameled wire is led out from both ends of the power receiving coil 13, with a positive terminal 14 and a negative terminal 15.

[0036] For example, Figure 3 As shown, the PCM element 11 is a protection circuit module. The positive terminal 14 and the negative terminal 15 of the power receiving coil 13 are welded to the PCM element 11 by laser welding. The housing 20 is made of an insulating material, such as a plastic film. The housing 20 can effectively protect the battery body, the PCM element 11, etc.

[0037] In the disclosed embodiment, the wireless charging battery device is an integrated structure, that is, the battery body and the power receiving coil 13 are integrated together. The battery device can be wirelessly charged through an external charging seat.

[0038] In addition, the power receiving coil 13 is connected to the battery body through the PCM element 11. This arrangement can effectively prevent overcharging, overdischarging, overcurrent and the like, thereby improving the safety performance of the battery device.

[0039] In an example, Figure 1-6 As shown, the battery device further includes an insulating cover 21. A receiving cavity 24 is provided on one surface of the insulating cover 21. The receiving coil 13 is provided in the receiving cavity 24. For example, the insulating cover 21 is made of plastic, rubber or silicone material. The insulating cover 21 is in a sheet-like structure. The receiving cavity 24 is formed by a surface of the insulating cover 21 being recessed inward. The insulating cover 21 can effectively prevent the receiving coil 13 from short-circuiting.

[0040] In addition, the insulating cover 21 can effectively protect the power receiving coil 13 to prevent the power receiving coil 13 from being deformed during the assembly process.

[0041] In addition, the insulating cover 21 can also play a heat insulation effect and prevent the battery body from overheating.

[0042] In an example, Figure 1-4 As shown, the battery body includes a first end and a second end opposite to the first end. The first end is an open end. The cap 18 of the battery body is arranged at the first end. For example, it is rolled at the first end by grooving. The power receiving coil 13 and the PCM element 11 are arranged at the first end. One end of the positive electrode current collector 16 is connected to the cap 18, and the other end is connected to the PCM element 11. One end of the negative electrode current collector 17 is connected to the shell 19, and the other end is connected to the PCM element 11. For example, the connection is made by laser welding. The power receiving coil 13 is located between the PCM and the battery body.

[0043] Alternatively, the power receiving coil 13 is disposed at the first end, the PCM element 11 is disposed at the second end, and the positive terminal 14 and the negative terminal 15 pass through the side wall 22 of the housing 19 and are connected to the PCM element 11 .

[0044] In this example, the power receiving coil 13 is located at the end of the battery body, so that the power receiving coil 13 does not increase the outer diameter of the battery device.

[0045] In an example, Figure 5-6 As shown, the power receiving coil 13 is disposed on the side wall 22 of the cylindrical housing 19. For example, the entirety of the power receiving coil 13 is an arc surface or a cylindrical structure, so as to fit on the side wall 22 of the housing 19. The power receiving coil 13 can be directly disposed on the side wall 22 of the housing 19. In this way, the power receiving coil 13 is located between the housing 20 and the housing 19.

[0046] Alternatively, the power receiving coil 13 may be located outside the housing 20 . In this way, the power receiving coil 13 is indirectly disposed on the side wall 22 of the housing 19 .

[0047] In this example, the surface area of ​​the side wall 22 of the housing 19 is much larger than the area of ​​the two ends. In this way, a larger mass and longer length of the power receiving coil 13 can be arranged in the battery device, thereby effectively increasing the working area during charging and improving the charging speed of the battery device.

[0048] In an example, Figure 5 As shown, the power receiving coil 13 is cylindrical as a whole and is arranged around the side wall 22. For example, it is cylindrical or square. In this example, the power receiving coil 13 is a three-dimensional spiral structure and is cylindrical as a whole. The insulating cover 21 is a cylindrical structure. The power receiving coil 13 is wound around the outside of the insulating cover 21. The insulating cover 21 is sleeved outside the shell 19 or the outer shell 20. This arrangement makes full use of the outer surface of the side wall 22, which maximizes the working area of ​​the power receiving coil 13.

[0049] Of course, in other examples, the power receiving coil 13 may also be in a serpentine structure 23 .

[0050] In an example, Figure 6 As shown, the power receiving coil 13 is in an arc structure and is attached to the side wall 22. In this example, the power receiving coil 13 is in a serpentine structure 23. This arrangement can also significantly increase the working area of ​​the power receiving coil 13.

[0051] In one example, the power receiving coil 13 is formed in the accommodating cavity 24 by etching. The etching method includes chemical etching and laser etching.

[0052] For example, when chemical etching is performed, first, a protective layer is provided on the surface of the metal plate according to a set pattern. Then, the portion other than the protective layer is etched away by a chemical agent. Next, the protective layer is removed to obtain the power receiving coil 13 of the spiral structure or the serpentine structure 23.

[0053] For example, when laser etching is performed, a metal plate is etched by a laser to remove part of the material, thereby forming the power receiving coil 13 having a set pattern.

[0054] The etching molding method has the characteristic of high molding precision.

[0055] Furthermore, since there is no need to extend the lead wire, the power receiving coil 13 has a high structural strength.

[0056] In one example, the power receiving coil 13 is formed in the accommodating cavity 24 by vapor deposition. For example, physical vapor deposition (PVD) or chemical vapor deposition (CVD). The vapor deposition method can directly deposit the metal material into a power receiving coil 13 of a set pattern, such as a serpentine structure 23. This method also has the characteristic of high molding accuracy.

[0057] In addition, since there is no need to physically change the structure of the metal plate, the stress and strain of the power receiving coil 13 formed by the vapor deposition method are small.

[0058] In one example, the battery body, the power receiving coil 13 and the PCM element 11 are arranged in the housing 20. The PCM element 11 includes a first surface on which the functional elements are installed and a second surface opposite to the first surface. The power receiving coil 13 is formed on the second surface by etching or vapor deposition. For example, the first surface is the front side of the PCB of the PCM element 11, and the second surface is the back side. The functional elements include resistance elements, capacitance elements, inductance elements, display elements, electrical connection elements, etc. The functional elements are arranged on the front side of the PCB. The power receiving coil 13 is formed on the back side of the PCB. In this way, the power receiving coil 13 is integrated with the PCM element 11 and can be assembled together, thereby facilitating the installation of the power receiving coil 13 and facilitating the assembly of the wireless charging battery device.

[0059] In addition, the power receiving coil 13 does not occupy any additional space of the wireless charging battery device, thus conforming to the development trend of miniaturization of electronic products.

[0060] In an example, Figure 3 , 4 As shown in Figures 1 and 6, the PCM element 11 has a via 12. The via 12 is a metalized through hole. A metal layer is provided on the hole wall of the PCM element 11. The metal layer can play a conductive role so as to facilitate conduction with various devices on the PCM element 11. At least one of the positive current collector 16 and the negative current collector 17 is inserted into the via 12. For example, the positive current collector 16 has an L-shaped structure. One edge of the positive current collector 16 is welded in the cap 18, and the other edge extends outward from the cap 18 and is inserted into the via 12. The other edge is in conduction with the metal layer. For example, the other edge is fixed in the via 12 by soldering. In this way, the connection between the PCM element 11 and the battery body becomes easy, and the positioning of the PCM element 11 can be more accurate.

[0061] The negative electrode current collector 17 also has an L-shaped structure. One side of the negative electrode current collector 17 is welded to the side wall 22 of the shell 19 , and the other side is welded to the upper surface of the PCM element 11 .

[0062] Alternatively, the PCM element 11 includes a via hole 12 corresponding to the negative electrode. The negative electrode current collector 17 is also inserted into the via hole 12 to form conduction.

[0063] According to another embodiment of the present disclosure, a charging stand is provided. The charging stand is used to charge the wireless charging battery device in which the power receiving coil 13 is arranged on the side wall 22 of the housing 19. The charging stand includes a main body and a power transmission coil. The main body has a cavity. The power transmission coil is arranged in the main body and around the side wall 22 of the cavity. When charging, the wireless charging battery device is inserted into the cavity.

[0064] The charging stand has the characteristic of high charging efficiency.

[0065] In addition, the charging stand can accommodate a wireless charging battery device.

[0066] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A wireless charging battery device, wherein: The invention comprises a battery body, a power receiving coil, a PCM element and a casing, wherein the battery body, the power receiving coil and the PCM element are arranged in the casing, and the battery body comprises a shell; The positive terminal and the negative terminal of the power receiving coil are respectively connected to the positive electrode collector and the negative electrode collector of the battery body through the PCM element; It also includes an insulating cover, a surface of which is provided with a receiving cavity, and the receiving coil is arranged in the receiving cavity; The insulating cover is arranged on the side wall of the shell, and the power receiving coil is attached to the side wall of the shell; Alternatively, the invention comprises a battery body, a power receiving coil, a PCM element and a casing, wherein the battery body comprises a casing; The positive terminal and the negative terminal of the power receiving coil are respectively connected to the positive electrode collector and the negative electrode collector of the battery body through the PCM element; It also includes an insulating cover, a surface of which is provided with a receiving cavity, and the receiving coil is arranged in the receiving cavity; The battery body and the PCM element are arranged in the shell, the power receiving coil is arranged outside the shell, the insulating cover is sleeved outside the shell, and the power receiving coil is indirectly arranged on the side wall of the shell.

2. The wireless charging battery device according to claim 1, wherein the battery body comprises a cylindrical shell, wherein: The power receiving coil is provided on a side wall of the cylindrical casing.

3. The wireless charging battery device according to claim 2, wherein: The power receiving coil is cylindrical and is disposed around the side wall.

4. The wireless charging battery device according to claim 2, wherein: The power receiving coil is in an arc surface structure.

5. The wireless charging battery device according to any one of claims 1 to 4, wherein: The power receiving coil has a serpentine structure.

6. The wireless charging battery device according to any one of claims 1 to 4, wherein: The power receiving coil is formed by etching or vapor deposition.

7. The wireless charging battery device according to any one of claims 1 to 4, wherein: The PCM element has a via hole, and at least one of the positive electrode current collector and the negative electrode current collector is inserted into the corresponding via hole.

8. A charging stand, wherein: It comprises a main body and a power transmission coil, wherein the main body has a cavity, the power transmission coil is arranged around the side wall of the cavity, and the charging seat is used to charge the wireless charging battery device as described in any one of claims 2 to 4, and the wireless charging battery device is inserted into the cavity.

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