WO2019061031A1

WO2019061031A1 - Wireless rechargeable battery and wireless rechargeable battery pack

Info

Publication number: WO2019061031A1
Application number: PCT/CN2017/103512
Authority: WO
Inventors: 郭熙军
Original assignee: 深圳市熙锦科技发展有限公司
Priority date: 2017-09-26
Filing date: 2017-09-26
Publication date: 2019-04-04

Abstract

Provided are a wireless rechargeable battery (100) and a battery pack (200) having the same. The battery (100) comprises: a battery casing (10); a rechargeable cell (20) provided inside the battery casing (10); a positive electrode assembly (30); a negative electrode assembly (40); a wireless charging coil (50); and a PCB (60) connected to the wireless charging coil (50). The battery casing (10) has a flat surface (101) formed in an axial direction and parallel to an axis of the battery. The wireless charging coil (50) is bonded to the flat surface (101). The PCB (60) is received in the battery casing (10). The PCB (60) has a positive electrode lead and a negative electrode lead. The positive electrode lead and the negative electrode lead are respectively and correspondingly connected to the positive electrode assembly (30) and the negative electrode assembly (40). In the invention, the wireless charging coil (50) is directly integrated into the battery (100), such that the battery has a compact structure. Moreover, the battery (100) is convenient because it can be charged while in use. In the battery pack (200), flat surfaces (101) of respective battery casings (10) are combined to form a larger main flat surface (102) on which a larger wireless charging coil (50a) is provided, thereby maximizing charging efficiency.

Description

Wireless rechargeable battery and wireless rechargeable battery pack

[0001] The present disclosure relates to the field of rechargeable batteries, and in particular to a wireless rechargeable battery and a wireless rechargeable battery.

[0002] With the advancement of technology, electronic products have also prospered, products are changing with each passing day, and the update iteration cycle is getting shorter and shorter. The functions and uses of electronic terminals are increasing and the usage is becoming more and more frequent. Frequent use and increased functionality will inevitably speed up the battery's power consumption, and the frequency of charging the battery is also high.

[0003] Obviously, frequent charging brings inconvenience to users, which is why many mobile phone manufacturers have repeatedly pursued battery capacity, and even used battery capacity as a selling point for products. Experts predict that future electronic products will replace traditional data line charging methods with wireless charging. For example, the eighth generation of Apple's mobile phone will issue wireless charging.

[0004] Moreover, many wireless charging enthusiasts have external wireless charging for electronic products without wireless charging function. Therefore, the wireless charging mode will be the future development trend.

[0005] However, most of the current electronic products, such as remote control, mouse, and the like, do not have a rechargeable battery, and even if a rechargeable battery is used, it is charged by a charging line. This type of charging is very inconvenient, and the charging cable needs to be prepared later.

[0006] Wired charging limits the use of electronic products. There are also a small number of wireless charging devices. Some of these wireless charging electronics are equipped with a wireless charging receiver on the product casing, such as a mobile phone case or a mobile phone case, and the wireless charger is connected to the mobile phone, and then placed in a special Charge on the wireless charger. This method is not suitable for a cylindrical battery or an aluminum battery.

technical problem

In view of the above, a wireless rechargeable battery and a wireless rechargeable battery pack that are compact in structure, convenient in wireless charging, energy-saving and consumption-reducing, and can be charged anywhere are provided.

Problem solution Technical solution

[0008] A wireless rechargeable battery includes a battery case and a rechargeable battery core, a positive electrode assembly, and a negative electrode assembly mounted in the battery case, further comprising a wireless charging coil and a PCB circuit board connected to the wireless charging coil The battery case is formed with a plane parallel to the axis of the battery along the axial direction, the wireless charging coil is attached to the plane, the PCB circuit board is housed in the battery case, and the PCB circuit board has a positive lead and The negative electrode I wire, the positive electrode I wire and the negative electrode I wire are respectively connected to the positive electrode assembly and the negative electrode assembly.

[0009] Preferably, the plane is formed by flat cutting of the end surface of the battery case along the axial direction, and the length of the flat cutting is less than or equal to the total axial length of the battery case.

[0010] Preferably, the plane is stamped from a battery case, and the length of the plane is less than or equal to the total axial length of the battery case.

[0011] Preferably, the negative electrode assembly includes a negative electrode end cover and a negative electrode contact, the negative electrode contact is exposed or flushed to the negative electrode end cover, and the negative electrode contact is electrically connected to the PCB circuit board. The positive electrode assembly includes a positive electrode end cap and a positive electrode contact, the positive electrode contact protrudes from the positive electrode end cap, and the positive electrode contact is electrically connected to the PCB circuit board.

[0012] Preferably, the two ends of the PCB circuit board are respectively provided with a positive end plate and a negative end plate, and the electric core and the PCB circuit board are stacked and sandwiched between the positive end plate and the negative end plate.

[0013] Preferably, the battery case is cylindrical, and the positive end cover and the negative end cover are respectively disposed at two ends of the battery case

The PCB circuit board divides the battery case into two upper and lower cavities, and the electric cells are placed in one of the cavities

[0014] Preferably, the battery cell is a soft-packed battery core, the PCB circuit board has opposite first and second surfaces, and the first surface is provided with a plurality of electronic components, the soft-packed battery core There is a third surface, and the second surface of the PCB circuit board is combined with the third surface of the soft pack cell.

[0015] Preferably, the wireless charging coil is circular or elliptical, placed on the plane in a manner occupying a maximum area of the plane, and another plane opposite to the plane is provided with another plane, two The planes are parallel to each other and are of comparable size, and the wireless charging coils are respectively provided.

[0016] And, a wireless rechargeable battery pack comprising a plurality of wireless rechargeable batteries, each of the wireless rechargeable batteries being a wireless rechargeable battery as described above, wherein adjacent battery cases are connected to each other through respective side portions, so that the respective batteries The shells are connected side by side, and the planes of the battery cases are connected as a main plane, and the outer ring of the wireless charging coil is cut into or close to at least three side edges of the main plane.

[0017] Preferably, the plane of each battery case extends along the entire axial length of the wireless rechargeable battery, and all of the battery cases are integrally formed structures, and the main plane is an integral structure of the outer surface of the battery case.

Advantageous effects of the invention

Beneficial effect

[0018] In the above wireless rechargeable battery and battery pack, the wireless charging coil and the battery are directly integrated, and the structure is compact, and does not affect the internal structure of the rechargeable battery itself and the charging use. Secondly, since the wireless charging coil is arranged parallel to the axial direction of the battery, and generally the battery is placed on the battery, the wireless charging coil can be substantially parallel to the horizontal plane. Therefore, the battery can be side by side. With one side charging, you can wirelessly charge anywhere, and there is no trouble to stop using it after power off. Wireless charging is more convenient and quick. Moreover, the wireless charging method is more energy-saving and consumes, the charging efficiency is high, and the charging speed is fast. Furthermore, the battery pack combines the planes of the individual battery cases into one larger main plane to set a larger wireless charging coil, which greatly improves the charging efficiency. In addition, as long as the external discharge transmission power is large enough or relying on the development and application of future long-distance wireless charging technology, the remote distance can be charged, and an external discharge transmitting coil can simultaneously supply power to many such wireless rechargeable batteries. It is convenient, fast, energy-saving and emission-reducing, and has broad application prospects. Even for future electronic products, this battery can be applied equally.

Brief description of the drawing

DRAWINGS

1 is a schematic perspective structural view of a wireless rechargeable battery according to an embodiment of the present invention.

2 is a perspective exploded structural view of a wireless rechargeable battery according to an embodiment of the present invention.

3 is a perspective exploded view showing another angle of a wireless rechargeable battery according to an embodiment of the present invention.

4 is a schematic perspective structural view of a wireless rechargeable battery pack according to an embodiment of the present invention.

5 is a perspective exploded structural view of a wireless rechargeable battery pack according to an embodiment of the present invention.

Embodiments of the invention [0024] Hereinafter, the present invention will be described in detail in conjunction with the specific embodiments and the accompanying drawings.

Referring to FIG. 1 to FIG. 3, a wireless rechargeable battery 100 according to an embodiment of the present invention includes a battery case 10 and a rechargeable battery cell 20, a positive electrode assembly 30 and a negative electrode assembly 40, which are mounted in the battery case 10. Also included is a wireless charging coil 50 and a PCB circuit board 60 connected to the wireless charging coil 50. The battery case 10 is formed with a plane 101 parallel to the battery axis along the axial direction, and the wireless charging coil 50 is attached to The PCB 101 is housed in the battery case 10. The PCB circuit board 60 has a positive lead and a negative lead I. The positive lead I and the negative lead I are respectively connected to each other. Positive electrode assembly 30 and negative electrode assembly 40.

Preferably, the battery case 10 has a cylindrical shape, and the entire battery 100 has a columnar shape. Specifically, the flat surface 101 is formed by flat cutting of the end surface of the cylindrical battery can 10 in the axial direction, and the length of the flat cutting is less than or equal to the total axial length of the battery can. The length of the flat cut, that is, the length of the plane 101 in the axial direction is less than or equal to the total axial length of the battery case, about half of the length of the battery case 10, preferably 2/5 to 3/5 of the entire axial length. Of course, "flat" here is merely for the convenience of forming a plane, and is not limited to being formed by a flat cutting method, but may be formed by molding, stamping, or the like. The battery can 10 is a cylindrical casing, and the wall thickness of the battery can 10 can be thick, so that it can be formed into a large-area plane 101.

[0027] In another embodiment, the plane 101 is stamped from the battery can 10, and the depth of the stamping is appropriate, which does not affect the cell 20 in one aspect, and allows the plane 101 to have a large area on the other hand. The length of the plane 101 is less than or equal to the total axial length of the battery case.

[0028] As shown in FIG. 2, the negative electrode assembly 40 includes a negative electrode end cap 41 and a negative electrode contact 42. The negative electrode contact 42 is exposed or flush with the negative electrode end cap 41, and the negative electrode contact 42 is The PCB circuit board 60 is electrically connected. The positive electrode assembly 30 includes a positive electrode end cap 31 and a positive electrode contact 32. The positive electrode contact 32 protrudes from the positive electrode end cap 31, the positive electrode contact 32 and the PCB. The circuit board 60 is electrically connected. The negative electrode end cap 41 and the positive electrode end cap 31 are respectively located at the positive and negative ends of the cell. The negative electrode end cover 41 and the positive electrode end cover 31 are both in the shape of a wafer. The negative electrode contact 42 is located at the center of the negative electrode end cover 41, and may be penetrated and protruded from the negative electrode end cover 41. The positive electrode contact 32 is located at the center of the positive electrode end cover 31. It may be penetrated and protruded from the positive electrode end cap 31, and the positive and negative electrodes of the battery are taken out through the positive electrode contact 32 and the negative electrode contact 42. When there is no external charging source 吋, the positive charging unit 30 and the negative unit 40 can be charged by the conventional charging method for emergency use. The built-in battery cell 20 is also used as an emergency or to provide power supply during wireless charging. In addition, even through Wireless charging, for example, wireless charging when using one side, since the wireless charging coil 50 cannot always align with the direction of the external transmitting coil after using the electronic product, the use of the battery core 20 can ensure continuity of use of the power supply, The user's use of electricity provides dual insurance.

[0029] Preferably, the two ends of the PCB circuit board 60 are respectively provided with a positive end plate 61 and a negative end plate 62. The battery core 20 and the PCB circuit board 60 are stacked and sandwiched between the positive end plate 61 and the negative end. Between plates 62. Preferably, the battery core 20 is a soft pack core 20, and the PCB circuit board 60 is flat on the surface of the soft pack core 20. That is, the battery cell 20 is parallel to the PCB circuit board 60. The PCB circuit board 60 has opposite first and second surfaces, the first surface is provided with a plurality of electronic components, the soft battery core 20 has a third surface, and the second surface of the PCB circuit board Combined with the third surface of the flexible battery core 20. The PCB circuit board 60, the positive pole plate 61, and the negative terminal plate 62 constitute a space in which the battery cells 20 are placed, and the battery cells 20 are placed on the second surface of the PCB circuit board 60.

[0030] Each of the positive electrode plate 61 and the negative electrode end plate 62 is preferably a circular plate, and the positive electrode terminal 31 and the negative electrode terminal cover 41 are respectively mounted on the positive electrode terminal plate 61 and the negative electrode terminal plate 62, for example, by adhesive bonding. installation. The positive pole plate 6 1 and the negative end plate 62 are insulating spacers, but the positive terminal plate 61 and the negative terminal plate 62 have a bore therebetween or the PCB circuit board 60 has electrode ears around the two end plates 61 and 62, so that the PCB circuit An electrode extension at the end of the plate 60 is electrically connected to the positive electrode contact 32 and the negative electrode contact 42. Preferably, the same battery core 20 also has leads electrically connected to the positive contact 32 and the negative contact 42, respectively. Of course, the battery cell 20 can also be a conventional polymer lithium ion battery. In order to conveniently set a plane 101 large enough, the size of the battery cell 20 can be appropriately reduced, and the capacity can be appropriately selected to have a large power-renewing capability. The PCB circuit board 60 divides the battery case 10 into upper and lower cavities, and the battery cells 20 are placed in one of the cavities. In some preferred embodiments, the upper and lower chambers may be provided with cells 20, i.e., two cells 20.

[0031] In another embodiment, the other side opposite to the plane 101 may be provided with another plane, the two planes are parallel to each other, and the same size, and another wireless charging coil is also provided, and the two wireless charging coils are the same.吋 Charge the battery 20 to further improve the charging efficiency.

[0032] The battery case 10 is cylindrical, the battery case 10 has through holes at both ends thereof, and the positive end cover 31 and the negative end cover 41 are respectively disposed at two ends of the battery, that is, sealed to the corresponding through holes 23 . The battery case 10 further has a ring 24 at both ends, and the through hole 23 is defined by the ring 24. The arrangement of the ring 24 facilitates the flat cutting or stamping of the flat 101.

[0033] Preferably, the wireless charging coil 50 is circular or elliptical, and is placed on the plane 101 in a manner occupying the maximum area of the plane 101, which is illustrated as an ellipse. The wireless charging coil 50 is preferably fixed by glue The plane 101 can be combined with the battery case 10 by a wax seal or other packaging method, and does not need to be disassembled during use and charging.

Referring to FIG. 4 and FIG. 5, a wireless rechargeable battery pack 200 according to an embodiment of the present invention is shown, which includes a plurality of wireless rechargeable batteries, each of which uses the wireless rechargeable battery as described above, FIG. 4 and FIG. 5 is numbered 100a and 100b, and the structure of each of the batteries 100a, 100b is substantially the same as that of the battery 100, and includes a battery case 10, a rechargeable battery cell 20 housed in the battery case 10, a positive electrode assembly 30, and a negative electrode assembly 40, respectively. The same reference numerals in FIGS. 4 and 5 as those in FIGS. 1-3 denote substantially the same elements. The wireless charging coils may also be respectively disposed on the surface of the battery can 10 corresponding to each of the cells 20 in correspondence with the battery can 10. Preferably, in the illustrated embodiment, a large wireless charging coil 50a and a PCB circuit board 60a connected to the wireless charging coil 50a are employed. The PCB circuit board 60a may be provided one at a position corresponding to each of the battery cells 20, or only one may be provided. In the figure, only one PCB circuit board 60a is provided, that is, each of the batteries 100a and 100b shares a PC B circuit board 60a. The battery cell 20 may also correspond to the number of battery cases, or a large battery core 20a may be used, as shown in FIG.

[0035] In each of the batteries 100a, 100b, the adjacent battery cans 10 are connected to each other by respective side portions, so that the battery cans 10 are integrally connected side by side, and the plane 101 of each of the battery cans 10 is connected as a main plane 102. Preferably, the outer ring of the wireless charging coil 50a is inscribed or nearly inscribed on at least three side edges of the main plane 102 such that the diameter of the wireless charging coil 50 is sufficiently large to provide a larger capacity of charging power. , improve charging efficiency. As shown in Fig. 5, the main plane 102 is rectangular, and the wireless charging coil 50a is equivalent to an area occupying the main plane 102 - the largest square, that is, the coil area 102a, which is redundant to the blank area 102b. The blank area 102b is slightly higher than the coil area 102a, which facilitates the installation of the wireless charging coil 50a, and both form a step.

Preferably, the plane 101 of each of the battery cans 10 extends along the entire axial length of the wireless rechargeable battery, and all of the battery cans 10 are integrally formed, and the principal plane 102 is formed by press molding. That is, one side of the entire wireless rechargeable battery pack 200 is an integrally formed large plane 102. The wireless charging coil 50a is bonded to the main plane 102 as much as possible to charge the cells 20. By this combination, the main plane 102 corresponds to the area covering the joint between the battery cans 10, and the area of the main plane 102 is not only the sum of the planes 101 of the three single battery cans 10, but larger than the planes. The sum of 101.

[0037] In the wireless rechargeable battery 100 and the battery pack 200 described above, the wireless charging coil 50 and the battery are directly integrated, and the structure is compact, and the internal structure of the rechargeable battery itself and the charging use are not affected. Second, because there is no The line charging coil 50 is disposed parallel to the axial direction of the battery, and generally the battery is placed on the battery when the battery is used, so that the wireless charging coil 50 can be substantially parallel to the horizontal plane 101 after use, so that the battery can be on one side With one side charging, you can wirelessly charge anywhere, and there is no trouble to stop using it after power off. Wireless charging is more convenient and quick. Moreover, the wireless charging method is more energy-saving and consumes, the charging efficiency is high, and the charging speed is fast. Further, the planes 101 of the respective battery cans 10 are combined into a larger main plane 101 in the battery pack to set a larger wireless charging coil 50, which greatly improves the charging efficiency. Therefore, as long as the external discharge transmission power is large enough or depends on the development and application of future long-distance wireless charging technology, the far distance can be charged, and an external discharge transmitting coil can simultaneously supply power to many such wireless rechargeable batteries. It is convenient, fast, energy-saving and emission-reducing, and has broad application prospects. Even for future electronic products, this battery can be applied equally.

It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the inventive spirit of the present invention. These changes according to the inventive spirit of the present invention should be included in the present invention. Within the scope of the claimed invention.

Claims

Claim

[Claim 1] A wireless rechargeable battery comprising a battery case and a rechargeable battery cell, a positive electrode assembly, and a negative electrode assembly mounted in the battery case, further comprising a wireless charging coil and a connection with the wireless charging coil a PCB circuit board, the battery case is formed with a plane parallel to the battery axis along the axial direction, the wireless charging coil is attached to the plane, and the PCB circuit board is housed in the battery case, the PCB circuit The plate has a positive electrode lead and a negative electrode lead, and the positive electrode lead line and the negative electrode lead line are respectively connected to the positive electrode assembly and the negative electrode assembly, respectively.

[Claim 2] The wireless rechargeable battery according to claim 1, wherein the plane is formed by flat cutting of the end surface of the battery case along the axial direction, and the length of the flat cutting is less than or equal to the total axial length of the battery case. The wireless rechargeable battery according to claim 1, wherein the plane is stamped from a battery case, and a length of the plane is less than or equal to an axial total length of the battery case.

The wireless rechargeable battery according to claim 1, wherein the negative electrode assembly comprises a negative end cap and a negative contact, the negative contact is exposed or flushed to the negative end cap, and the negative contact is The PCB circuit board is electrically connected, the positive electrode assembly includes a positive electrode end cover and a positive electrode contact, the positive electrode contact protrudes from the positive electrode end cover, and the positive electrode contact is electrically connected to the PCB circuit board.

The wireless rechargeable battery according to claim 4, wherein the two ends of the PCB circuit board are respectively provided with a positive end plate and a negative end plate, and the electric core and the PCB circuit board are stacked and sandwiched on the positive end plate Between the negative and negative end plates.

The wireless rechargeable battery according to claim 5, wherein the battery case is cylindrical, the positive end cover and the negative end cover are respectively disposed at two ends of the battery case, and the PCB circuit board is inside the battery case Divided into two upper and lower cavities, the electric cells are placed in one of the cavities. The wireless rechargeable battery according to claim 1, wherein the battery cell is a soft-package battery, the PCB circuit board has opposite first and second surfaces, and the first surface is provided with a plurality of The electronic device has a third surface, and the second surface of the PCB circuit board is coupled to the third surface of the soft pack.

The wireless rechargeable battery according to claim 1, wherein said wireless charging coil It is circular or elliptical, placed on the plane in such a manner as to occupy the largest area of the plane, and the other side opposite to the plane is further provided with another plane, the two planes are parallel to each other, and the dimensions are equivalent, respectively The wireless charging coil is described.

[Claim 9] A wireless rechargeable battery pack comprising a plurality of wireless rechargeable batteries, wherein each wireless rechargeable battery is the wireless rechargeable battery according to any one of claims 1-8, adjacent battery The shells are connected to each other through the respective side portions, so that the battery shells are connected side by side, and the planes of the battery shells are connected to be a main plane, and the outer ring of the wireless charging coil is cut or nearly inscribed in the main plane. At least three side edges.

[Claim 10] The wireless rechargeable battery pack according to claim 9, wherein the plane of each battery case extends along the entire axial length of the wireless rechargeable battery, and all of the battery cases are integrally formed, the main The plane is an integral structure of the outer surface of the battery case.