Circuit board for battery device and battery assembly

Abstract

The invention discloses a circuit board for a battery device and a battery assembly, the battery assembly specifically comprises a battery cell group and the circuit board for the battery device, and a fixing plate is mounted between a control panel and the battery cell group; the battery cell group comprises two first battery cells which are distributed in a layered manner in the same direction and two second battery cells which are distributed in a layered manner in the same direction, and spacing columns are arranged between the first battery cells and the second battery cells. The control panel and the power panel are connected through the at least two copper conductive columns, so that heat generated by the control panel and the power panel can be quickly dissipated, and an overcurrent protection effect is achieved; the control panel and the battery cell group can be positioned and assembled through the fixing plate, and the first battery cell and the second battery cell are mounted at intervals through the spacing columns, so that the short circuit phenomenon is avoided; and meanwhile, a heat insulation effect can be achieved, and the influence of over-high temperature between two adjacent battery cells is reduced. Therefore, the technical problem of low heat dissipation efficiency of the battery assembly in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the field of battery heat dissipation, and in particular to a circuit board and a battery assembly for a battery device. Background Art

[0002] Camera, also known as camera for short, is a device that uses the optical imaging principle to form images and uses film to record images. There are many types of cameras. According to their uses, they can be divided into landscape photography cameras, printing plate cameras, digital cameras, document microfilm cameras, microscopic cameras, underwater cameras, aerial cameras, high-speed cameras, etc.; according to the framing method, they can be divided into perspective framing cameras, twin-lens reflex cameras, and single-lens reflex cameras.

[0003] In the prior art, the camera is powered by a battery assembly, which includes a battery cell and a circuit board for controlling the working state of the battery assembly. However, when the single operation time of the battery assembly is too long, the battery cell and the circuit board will generate a lot of heat. Due to the composition structure of the battery assembly, the heat dissipation efficiency of the battery assembly is low, which in turn affects the operating performance of the battery assembly. Summary of the invention

[0004] The object of the present invention is to provide a circuit board and a battery assembly for a battery device, which solves the technical problem of low heat dissipation efficiency of the battery assembly in the prior art.

[0005] To achieve this object, the present invention adopts the following technical solutions: According to a first aspect, the present invention discloses a circuit board for a battery device, comprising: a control board and a power board arranged in parallel, the control board and the power board are connected via at least two copper conductive columns, and a power output interface for inputting a DC power supply to an electronic device is installed on the power board; The control board is provided with a first through hole corresponding to the copper conductive column, and the power board is provided with a second through hole corresponding to the copper conductive column; The copper conductive column comprises a first column, a second column and a third column connected in sequence, one end of the first column passes through the first through hole and is welded and fixed to the control board, and one end of the third column passes through the second through hole and is welded and fixed to the power board; the first column, the second column and the third column are all cylindrical, and the outer diameter of the second column is larger than the outer diameter of the first column and the outer diameter of the third column; A first contact surface is provided at one end of the second column, and a second contact surface is provided at the other end of the second column. The first contact surface contacts the control board, and the second contact surface contacts the power board. Both the first contact surface and the second contact surface are annular planes.

[0006] Optionally, a circular mounting hole is provided at one end of the control panel, two mounting holes are arranged opposite to each other, and the mounting hole is arranged adjacent to the first through hole.

[0007] Optionally, a USB interface and a Type-C interface are installed at one end of the control board, and the two Type-C interfaces are distributed at opposite ends of the USB interface; A connection terminal is installed at the other end of the control board. The connection terminal includes a connection seat. The control board is overlapped on the connection seat. At least two connection columns are embedded in the connection seat. The connection columns are electrically connected to the control board through wires.

[0008] According to a second aspect, the present invention discloses a battery assembly, comprising: a battery main shell and a battery upper cover connected to each other, a battery cell group and a circuit board for a battery device as described in the first aspect are installed in the battery main shell, the control board is electrically connected to the battery cell group, the control board is fixedly installed in the battery main shell, and a fixing plate is installed between the control board and the battery cell group; Among them, at least one cavity is provided in the fixing plate, and a notch connected to the cavity is opened on one side wall of the fixing plate. Part of the heat generated on the control board passes through the cavity and is discharged from the notch to avoid heat accumulation in the cavity.

[0009] Optionally, the battery cell group includes two first battery cells distributed in layers in the same direction and two second battery cells distributed in layers in the same direction, a spacer column is provided between the first battery cell and the second battery cell, the spacer column is used to space the first battery cell and the second battery cell, and the placement direction of the first battery cell is opposite to the placement direction of the second battery cell; The positive electrodes of the two first battery cells are connected to a first connecting piece, the negative electrodes of the two first battery cells and the positive electrodes of the two second battery cells are connected to a second connecting piece, the negative electrodes of the two second battery cells are connected to a third connecting piece, the two first battery cells are connected in parallel, the two second battery cells are connected in parallel, and the first battery cell and the second battery cell are connected in series; The first connecting piece, the second connecting piece and the third connecting piece are respectively welded and fixed to the control board.

[0010] Optionally, an end of the spacer column is provided with a receiving groove and an opening, and the receiving groove is communicated with the opening and is used to receive glue so that the first battery cell, the spacer column and the second battery cell are bonded and fixed.

[0011] Optionally, a first abutting surface and a second abutting surface are respectively provided on opposite sides of the spacer column, the number of the first abutting surface and the number of the second abutting surface are both two, the first battery cell abuts against the first abutting surface, and the two first battery cells are in contact; the second battery cell abuts against the second abutting surface, and the two second battery cells are in contact; The fixing plate is provided with a first positioning groove and a second positioning groove, and the battery cover is provided with a third positioning groove and a fourth positioning groove, the first positioning groove and the third positioning groove are used to position the two first battery cells, and the second positioning groove and the fourth positioning groove are used to position the two second battery cells.

[0012] Optionally, the first connecting sheet is provided with two first welding holes, and the first welding holes are used to facilitate welding of the positive electrode of the first battery cell and the first connecting sheet; The second connecting sheet is provided with four second welding holes, and the second welding holes are used to facilitate welding the negative electrode of the first battery cell and the positive electrode of the second battery cell to the second connecting sheet respectively; The third connecting sheet is provided with two third welding holes, and the third welding holes are used to facilitate welding of the negative electrode of the second battery cell to the third connecting sheet.

[0013] Optionally, the first connecting piece includes a first bending portion and a first welding portion connected to each other, the second connecting piece includes a second bending portion and a second welding portion connected to each other, and the third connecting piece includes a third bending portion and a third welding portion connected to each other; The control board is provided with a first soldering pad, a second soldering pad and a third soldering pad, the first soldering portion is soldered to the first soldering pad, the second soldering portion is soldered to the second soldering pad, and the third soldering portion is soldered to the third soldering pad.

[0014] Optionally, the control board is provided with a socket, the fixing board is provided with a plug post, the battery main shell is provided with a positioning post, and one end of the plug post passes through the socket and then plugs into the positioning post; A limiting groove is arranged on the inner wall of the battery main shell, and a limiting protrusion which is plugged and matched with the limiting groove is arranged on the side wall of the fixing plate, and the limiting protrusion and the fixing plate are integrally formed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a circuit board and battery assembly for a battery device. Since the control board and the power board are connected by at least two copper conductive columns, the heat generated by the control board and the power board can be quickly dissipated and play a role in overcurrent protection; the control board and the battery cell group can be positioned and assembled by a fixing plate, and the first battery cell and the second battery cell can be installed at intervals by a spacing column to avoid short circuits. At the same time, it can also play a heat insulation role and reduce the influence of excessive temperature between two adjacent battery cells. Therefore, the present invention can solve the technical problem of low heat dissipation efficiency of battery assemblies in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of a circuit board for a battery device disclosed in an embodiment of the present invention; Figure 2 The second is a three-dimensional structural schematic diagram of a circuit board for a battery device disclosed in an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a copper conductive column in a circuit board for a battery device disclosed in an embodiment of the present invention; Figure 4 This is one of the exploded structural schematic diagrams of a battery assembly disclosed in an embodiment of the present invention; Figure 5 This is a second schematic diagram of an explosion structure of a battery assembly disclosed in an embodiment of the present invention; Figure 6 A top view of a battery assembly disclosed in an embodiment of the present invention; Figure 7 for Figure 6 AA cross-sectional structural diagram; Figure 8 A schematic diagram of the three-dimensional structure of a fixing plate in a battery assembly disclosed in an embodiment of the present invention; Fig. 9 A schematic diagram of the three-dimensional structure of a battery main shell in a battery assembly disclosed in an embodiment of the present invention; Fig.10 A schematic diagram of the three-dimensional structure of a battery cell group disclosed in an embodiment of the present invention; Fig.11 A schematic diagram of an exploded structure of a battery cell group disclosed in an embodiment of the present invention; Fig.12 A schematic diagram of the three-dimensional structure of a spacer column of a battery assembly disclosed in an embodiment of the present invention; Fig.13 A schematic diagram of the three-dimensional structure of another battery cell group disclosed in an embodiment of the present invention; Fig.14 The present invention is a schematic diagram of the three-dimensional structure of a battery main shell in a battery assembly disclosed in an embodiment of the present invention.

[0019] Illustration Description: 10. Control board; 11. First through hole; 12. Mounting hole; 13. USB interface; 14. Type-C interface; 15. First solder pad; 16. Second solder pad; 17. Third solder pad; 18. Jack; 20. Power board; 21. Power output interface; 22. Second through hole; 30. Copper conductive column; 31. First column; 32. Second column; 321. First contact surface; 322. Second contact surface; 33. Third column; 40. Connecting terminal; 41. Connecting seat; 42. Connecting column; 50. Battery main shell; 51. Positioning column; 52. Limiting groove; 53. Support platform; 54. Limiting column; 60. Battery cover; 61. Third positioning groove; 62. Fourth positioning groove; 70, battery cell group; 71, first battery cell; 72, second battery cell; 73, spacer column; 731, receiving groove; 732, opening; 733, first abutting surface; 734, second abutting surface; 74, first connecting piece; 741, first welding hole; 742, first bending portion; 743, first welding portion; 75, second connecting piece; 751, second welding hole; 752, second bending portion; 753, second welding portion; 76, third connecting piece; 761, third welding hole; 762, third bending portion; 763, third welding portion; 80, fixing plate; 81, cavity; 82, notch; 83, first positioning groove; 84, second positioning groove; 85, plug column; 86, limiting protrusion; 90. Charging stand; 91. Anti-foolproof port; 100. Charging cover; 110. Interface cover; 111. Insert strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] According to a first aspect, the present invention discloses a circuit board for a battery device, such as Figure 1-14 As shown, it includes: a control board 10 and a power board 20 arranged in parallel, the control board 10 and the power board 20 are connected by at least two copper conductive columns 30, and a power output interface 21 for inputting DC power to the electronic device is installed on the power board 20; The control board 10 is provided with a first through hole 11 corresponding to the copper conductive column 30, and the power board 20 is provided with a second through hole 22 corresponding to the copper conductive column 30, and both the first through hole 11 and the second through hole 22 are circular holes; The copper conductive column 30 includes a first column 31, a second column 32 and a third column 33 connected in sequence. One end of the first column 31 passes through the first through hole 11 and is welded and fixed to the control board 10. One end of the third column 33 passes through the second through hole 22 and is welded and fixed to the power board 20. The first column 31, the second column 32 and the third column 33 are all cylindrically arranged, and the outer diameter of the second column 32 is greater than the outer diameter of the first column 31 and the outer diameter of the third column 33. In this embodiment, the outer wall surface of the copper conductive column 30 is gold-plated to further enhance the overcurrent protection effect of the copper conductive column 30. A first contact surface 321 is provided at one end of the second column 32, and a second contact surface 322 is provided at the other end of the second column 32. The first contact surface 321 contacts the control board 10, and the second contact surface 322 contacts the power board 20; the first contact surface 321 and the second contact surface 322 are both annular planes. The copper conductive column 30 adopts a multi-section column design, and the outer diameter of the second column 32 is larger than the first column 31 and the third column 33, making it more stable in structural connection, while dispersing the mechanical pressure applied to the copper conductive column and reducing the loss of the connection part. The two ends of the second column 32 are designed as annular planes, which can ensure that the connection between the control board and the power board is firm and the conductive effect is better.

[0024] It should be noted that the circuit board and battery assembly for a battery device provided by the present invention can quickly dissipate the heat generated by the control board 10 and the power board 20 and play a role in overcurrent protection because the control board 10 and the power board 20 are connected by at least two copper conductive columns 30; the copper conductive columns 30 have a supporting effect on the power board 20.

[0025] like Figure 1-3 As shown, a circular mounting hole 12 is provided at one end of the control board 10, and the two mounting holes 12 are arranged opposite to each other, and the mounting holes 12 are arranged adjacent to the first through hole 11. In this embodiment, the number of mounting holes 12 is set to two, and the mounting screws pass through the mounting holes 12 and are threadedly connected with the battery main housing 50, so that the control board 10 can be fastened and installed in the battery main housing 50.

[0026] like Figure 1-3 As shown, one end of the control board 10 is installed with a USB interface 13 and a Type-C interface 14 arranged at intervals, and the two Type-C interfaces 14 are distributed at opposite ends of the USB interface 13; in this embodiment, through the setting of the USB interface 13 and the Type-C interface 14, it is convenient to connect the battery assembly to the external electronic device to realize power supply.

[0027] The other end of the control board 10 is provided with a connection terminal 40, which includes a connection seat 41. The control board 10 is overlapped on the connection seat 41. The connection seat 41 is embedded with at least two connection posts 42, and the connection posts 42 are electrically connected to the control board 10 through wires. In the specific implementation process, the number of connection posts 42 is set to five, one of which is used to connect the positive pole of the battery assembly, and the other connection post 42 is used to connect the negative pole of the battery assembly; the other three connection posts 42 can be connected for data communication, which is convenient for detecting and controlling the working state of the battery assembly. By setting the connection terminal 40, the battery assembly can be conveniently electrically connected to the camera.

[0028] According to a second aspect, the present invention discloses a battery assembly, such as Figure 1-14As shown, it comprises: a battery main shell 50 and a battery upper cover 60 connected to each other, a battery cell group 70 and a circuit board for a battery device as in the first aspect are installed in the battery main shell 50, a control board 10 is electrically connected to the battery cell group 70, the control board 10 is fixedly installed in the battery main shell 50, and a fixing plate 80 is installed between the control board 10 and the battery cell group 70; Among them, at least one cavity 81 is provided in the fixing plate 80, and a notch 82 connected to the cavity 81 is provided on one side wall of the fixing plate 80. Part of the heat generated on the control board 10 passes through the cavity 81 and is discharged from the notch 82 to avoid heat accumulation in the cavity 81. It should be noted that due to the setting of the cavity 81 and the notch 82, an efficient heat discharge channel is formed, which is convenient for dissipating the heat generated by the control board 10 and the battery cell group 70 to prevent heat accumulation; thereby improving the heat dissipation effect of the battery assembly. The existence of the cavity 81 reduces the weight of the fixing plate 80 to a certain extent, while maintaining its functionality, optimizing the overall design of the battery assembly, and making it more suitable for use in portable devices.

[0029] like Figure 10-12 As shown, the battery cell group 70 includes two first battery cells 71 distributed in layers in the same direction and two second battery cells 72 distributed in layers in the same direction. A spacer column 73 is provided between the first battery cell 71 and the second battery cell 72. The spacer column 73 is used to space the first battery cell 71 and the second battery cell 72. The placement direction of the first battery cell 71 is opposite to the placement direction of the second battery cell 72. The spacer column 73 also has a heat insulation effect, which reduces the risk of performance degradation caused by high temperature between adjacent battery cells. The spacer column 73 provided between the first battery cell 71 and the second battery cell 72 plays a role of physical isolation, which not only effectively avoids the risk of short circuit between the battery cells, but also increases the heat dissipation space through the spacing design, reduces the heat accumulation between the battery cells, and improves the thermal management performance of the entire battery assembly. The layout of the battery cell group 70 allows the number and arrangement of the battery cells to be adjusted according to actual needs, such as adding more parallel and series units to meet the battery capacity requirements of different application scenarios, and can make the structural installation more compact and save space.

[0030] The positive electrodes of the two first battery cells 71 are connected to the first connecting piece 74, the negative electrodes of the two first battery cells 71 and the positive electrodes of the two second battery cells 72 are connected to the second connecting piece 75, the negative electrodes of the two second battery cells 72 are connected to the third connecting piece 76, the two first battery cells 71 are connected in parallel, the two second battery cells 72 are connected in parallel, and the first battery cell 71 and the second battery cell 72 are connected in series; by connecting the first battery cell 71 and the second battery cell 72 in series, the capacity of the battery assembly can be increased; the first battery cell 71 and the second battery cell 72 are both lithium batteries; The first connecting piece 74 , the second connecting piece 75 and the third connecting piece 76 are respectively welded and fixed to the control board 10 .

[0031] For example, Fig.13 As shown, the number of first battery cells 71 is set to four, the number of second connecting plates 75 is set to two, and the number of first connecting plates 74 and third connecting plates 76 is set to one; wherein the two first battery cells 71 are connected in parallel, and then connected in series with the two second battery cells 72 connected in parallel and the other two first battery cells 71 connected in parallel in turn, thereby realizing the parallel-series connection mode of the battery cell group 70; therefore, the number of first battery cells 71 and second battery cells 72 is not limited, and the corresponding number can be arranged according to the required capacity of the battery.

[0032] like Figure 10-12 As shown, the end of the spacer column 73 is provided with a receiving groove 731 and an opening 732, and the receiving groove 731 and the opening 732 are connected and used to contain glue so that the first battery cell 71, the spacer column 73 and the second battery cell 72 are bonded and fixed. It should be noted that by injecting glue into the receiving groove 731, the first battery cell 71, the spacer column 73 and the second battery cell 72 can be bonded and fixed, thereby improving the structural stability of the battery cell group 70. The multiple functional design of the spacer column 73 (such as support, isolation, bonding, etc.) increases the overall mechanical strength of the battery cell group 70. This structural design can extend the service life of the battery assembly, especially in scenarios that require frequent charging and discharging and withstand mechanical vibration.

[0033] like Figure 4-12 As shown, the first abutting surface 733 and the second abutting surface 734 are respectively provided on opposite sides of the spacer column 73, and the number of the first abutting surface 733 and the second abutting surface 734 are both two, the first battery cell 71 abuts against the first abutting surface 733, and the two first battery cells 71 are in contact; the second battery cell 72 abuts against the second abutting surface 734, and the two second battery cells 72 are in contact; in this embodiment, the first battery cell 71 abuts against the first abutting surface 733, and the second battery cell 72 abuts against the second abutting surface 734, so that the spacer column 73 can better support the first battery cell 71 and the second battery cell 72. The standardized design of the spacer column 73 allows it to be flexibly adapted to different battery cell combinations, while supporting flexible series-parallel combinations, which is convenient for expanding the capacity and performance of the battery assembly and adapting to the needs of more application scenarios.

[0034] The fixing plate 80 is provided with a first positioning groove 83 and a second positioning groove 84, and the battery cover 60 is provided with a third positioning groove 61 and a fourth positioning groove 62. The first positioning groove 83 and the third positioning groove 61 are used to position the two first battery cells 71, and the second positioning groove 84 and the fourth positioning groove 62 are used to position the two second battery cells 72. It should be noted that the inner walls of the first positioning groove 83 and the second positioning groove 84 are arranged in an arc surface, and the two first battery cells 71 are positioned by the first positioning groove 83 and the third positioning groove 61, and the two second battery cells 72 are positioned by the second positioning groove 84 and the fourth positioning groove 62, thereby realizing the positioning and installation of the battery cell group 70. The setting of the positioning groove simplifies the installation process of the battery cell, so that the operator can quickly and correctly position and install the battery cell, reduce assembly time, and improve production efficiency. The arc surface structure of the positioning groove further reduces the resistance when installing the battery cell, making the assembly process smoother.

[0035] like Fig.11 As shown, the first connecting sheet 74 is provided with two first welding holes 741, and the first welding holes 741 are used to facilitate welding of the positive electrode of the first battery cell 71 and the first connecting sheet 74; in the specific implementation process, the first welding holes 741 are arranged in a long strip shape; The second connecting sheet 75 is provided with four second welding holes 751, and the second welding holes 751 are used to facilitate welding the negative electrode of the first battery cell 71 and the positive electrode of the second battery cell 72 to the second connecting sheet 75. In the specific implementation process, the second welding holes 751 are arranged in a long strip shape; The third connecting sheet 76 is provided with two third welding holes 761, which are used to facilitate welding of the negative electrode of the second battery cell 72 with the third connecting sheet 76. In the specific implementation process, the third welding holes 761 are arranged in a long strip shape, and the third connecting sheet 76 is provided with a round hole.

[0036] It should be noted that the first welding hole 741 , the second welding hole 751 and the third welding hole 761 are provided to facilitate welding and assembly of the battery cell group 70 .

[0037] like Fig.11As shown, the first connecting piece 74 includes a first bending portion 742 and a first welding portion 743 connected to each other, the second connecting piece 75 includes a second bending portion 752 and a second welding portion 753 connected to each other, and the third connecting piece 76 includes a third bending portion 762 and a third welding portion 763 connected to each other; in this embodiment, the first bending portion 742, the second bending portion 752 and the third bending portion 762 are all arranged in a V shape; through the arrangement of the first bending portion 742, the second bending portion 752 and the third bending portion 762, it is convenient to bend the first welding portion 743, the second welding portion 753 and the third welding portion 763, so as to facilitate the subsequent welding operation. At the same time, the first bending portion 742, the second bending portion 752 and the third bending portion 762 are respectively in contact with the inner wall of the battery main shell 50, so as to further limit the position of the battery cell group 70 and prevent the battery cell group 70 from shaking in the battery main shell 50.

[0038] It should be noted that the first bending portion 742, the second bending portion 752 and the third bending portion 762 are all designed in a V-shape, so that each connecting piece can be flexibly bent to adjust the angle during the installation process, so that the first welding portion 743, the second welding portion 753 and the third welding portion 763 can be more accurately butt-welded with the pads (first pad 15, second pad 16 and third pad 17) of the control board 10. Through the V-shaped bending portion, the stress of the welding point is effectively dispersed. Compared with the traditional straight-line connecting piece design, this solution provides better tensile and fatigue resistance at the welding point, ensuring long-term stability of the connection. Due to the design of the V-shaped bending portion, the heat transfer between the welding portion and the pad is more uniform, which helps to disperse the heat generated by the battery cell during operation, thereby optimizing the overall heat dissipation performance.

[0039] Among them, the control board 10 is provided with a first pad 15, a second pad 16 and a third pad 17, the first welding portion 743 is welded to the first pad 15, the second welding portion 753 is welded to the second pad 16, and the third welding portion 763 is welded to the third pad 17. It should be noted that, through the arrangement of the first pad 15, the second pad 16 and the third pad 17, it is convenient to weld and fix the first connecting piece 74, the second connecting piece 75 and the third connecting piece 76 on the control board 10. The design of the first pad 15, the second pad 16 and the third pad 17 is precisely matched with the welding portion of each connecting piece, so that different types of connecting pieces can be quickly installed. The standardized design of the pad also enhances the compatibility of the battery assembly during production and maintenance.

[0040] like Figure 2 , Figure 7 , Figure 8 and Fig.14As shown, a socket 18 is provided on the control board 10, a plug post 85 is provided on the fixing plate 80, a positioning post 51 is provided in the battery main shell 50, and one end of the plug post 85 passes through the socket 18 and is plugged into and matched with the positioning post 51; in this embodiment, the number of the plug post 85, the socket 18 and the positioning post 51 are all set to two; by plugging and matching the plug post 85 with the positioning post 51, it is convenient to position and install the circuit board and the battery cell group 70 in the battery main shell 50.

[0041] A limiting groove 52 is provided on the inner wall of the battery main shell 50, and a limiting protrusion 86 that is plugged and matched with the limiting groove 52 is provided on the side wall of the fixing plate 80. The limiting protrusion 86 and the fixing plate 80 are an integrally formed structure. In the specific implementation process, the number of the limiting grooves 52 and the limiting protrusion 86 is set to six. Through the limiting cooperation of the limiting protrusion 86 and the limiting groove 52, the fixing plate 80 is limitedly installed in the battery main shell 50, and then the control board 10 of the circuit board can be limitedly installed. The longitudinal cooperation between the plug column 85 and the positioning column 51, and the lateral cooperation between the limiting protrusion 86 and the limiting groove 52 work together to form a multi-directional fixation of the control board 10, the fixing plate 80 and the battery cell group 70, which significantly enhances the comprehensive stability of the components. This multi-directional fixing method effectively prevents the problem of component displacement or looseness caused by vibration or mechanical shock. The design of the plug post 85, the plug hole 18 and the positioning post 51 provides a clear positioning reference for the assembly process, reduces human assembly errors, and speeds up the production assembly speed.

[0042] like Figure 1-14 As shown, four support platforms 53 are provided in the battery main shell 50, and the support platforms 53 are used to support the power board 20, and two of the support platforms 53 are respectively provided with limit posts 54, which pass through the power board 20, and the limit posts 54 correspond to the copper conductive posts 30 one by one. A charging seat 90 is installed on one side of the battery main shell 50, and a charging cover 100 is installed on the charging seat 90. The charging cover 100 is movably connected to the battery main shell 50, and the charging cover 100 is plugged into the charging seat 90. The charging seat 90 is provided with an anti-fool mouth 91; the setting of the anti-fool mouth 91 can prevent the interface of the external charger from being plugged in reverse, so as to achieve safe charging. An interface cover 110 is movably connected to the battery main shell 50, and the interface cover 110 is used to cover the power output interface 21, the USB interface 13 and the Type-C interface 14, and the interface cover 110 is provided with a plug strip 111 that plugs into the USB interface 13.

[0043] Working principle: The present invention provides a circuit board and battery assembly for a battery device, wherein the battery assembly specifically includes: a battery cell group 70 and a circuit board for a battery device, wherein a fixing plate 80 is installed between the control board 10 and the battery cell group 70; the battery cell group 70 includes two first battery cells 71 distributed in layers in the same direction and two second battery cells 72 distributed in layers in the same direction, and a spacer column 73 is provided between the first battery cell 71 and the second battery cell 72. Since the control board 10 and the power board 20 are connected by at least two copper conductive columns 30, the heat generated by the control board 10 and the power board 20 can be quickly dissipated, and the overcurrent protection function can be played; the control board 10 and the battery cell group 70 can be positioned and assembled by the fixing plate 80, and the first battery cell 71 and the second battery cell 72 can be installed at intervals by the spacer column 73 to avoid short circuit, and can also play a heat insulation role, reducing the influence of excessive temperature between two adjacent battery cells. Therefore, the present invention can solve the technical problem of low heat dissipation efficiency of the battery assembly in the prior art.

[0044] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit board for a battery device, characterized in that: include: A control board (10) and a power board (20) are arranged in parallel, the control board (10) and the power board (20) are connected via at least two copper conductive pillars (30), and the power board (20) is provided with a power output interface (21) for inputting a direct current power supply to the electronic device; the outer wall surface of the copper conductive pillar (30) is gold-plated; The control board (10) is provided with a first through hole (11) arranged corresponding to the copper conductive column (30), and the power board (20) is provided with a second through hole (22) arranged corresponding to the copper conductive column (30); The copper conductive column (30) comprises a first column (31), a second column (32) and a third column (33) connected in sequence, the first column (31) being fixed to the control board (10) by welding, and the third column (33) being fixed to the power board (20) by welding; the outer diameter of the second column (32) is greater than the outer diameter of the first column (31) and the outer diameter of the third column (33); A first contact surface (321) is provided at one end of the second column (32), and a second contact surface (322) is provided at the other end of the second column (32); the first contact surface (321) contacts the control board (10), and the second contact surface (322) contacts the power board (20).

2. The circuit board for a battery device according to claim 1, characterized in that: A circular mounting hole (12) is provided at one end of the control panel (10), the two mounting holes (12) are arranged opposite to each other, and the mounting hole (12) is arranged adjacent to the first through hole (11).

3. The circuit board for a battery device according to claim 1 or 2, characterized in that: A USB interface (13) and a Type-C interface (14) are installed at one end of the control board (10), and the two Type-C interfaces (14) are distributed at opposite ends of the USB interface (13); A connection terminal (40) is installed at the other end of the control board (10), the connection terminal (40) comprising a connection seat (41), the control board (10) is overlapped on the connection seat (41), at least two connection pillars (42) are embedded in the connection seat (41), and the connection pillars (42) are electrically connected to the control board (10) via wires.

4. A battery assembly, characterized in that: include: A battery main shell (50) and a battery upper cover (60) connected to each other, a battery cell group (70) and a circuit board for a battery device according to any one of claims 1 to 3 being installed in the battery main shell (50), the control board (10) being electrically connected to the battery cell group (70), the control board (10) being fixedly installed in the battery main shell (50), and a fixing plate (80) being installed between the control board (10) and the battery cell group (70); The fixing plate (80) is provided with at least one cavity (81), and a side wall of the fixing plate (80) is provided with a notch (82) connected to the cavity (81); part of the heat generated by the control board (10) passes through the cavity (81) and is discharged from the notch (82) to avoid heat accumulation in the cavity (81); the cavity (81) and the notch (82) together form a heat discharge channel, and the battery cell group (70) is manufactured by combining a plurality of battery cells in series and parallel.

5. The battery assembly according to claim 4, characterized in that: The battery cell group (70) comprises two first battery cells (71) distributed in layers in the same direction and two second battery cells (72) distributed in layers in the same direction, a spacing column (73) is provided between the first battery cell (71) and the second battery cell (72), the spacing column (73) is used to space the first battery cell (71) and the second battery cell (72), and the placement direction of the first battery cell (71) is opposite to the placement direction of the second battery cell (72); The positive electrodes of the two first battery cells (71) are connected to a first connecting sheet (74), the negative electrodes of the two first battery cells (71) and the positive electrodes of the two second battery cells (72) are all connected to a second connecting sheet (75), the negative electrodes of the two second battery cells (72) are connected to a third connecting sheet (76), the two first battery cells (71) are connected in parallel, the two second battery cells (72) are connected in parallel, and the first battery cell (71) and the second battery cell (72) are connected in series; The first connecting piece (74), the second connecting piece (75) and the third connecting piece (76) are respectively fixed to the control board (10) by welding.

6. The battery assembly according to claim 5, characterized in that: An end portion of the spacer column (73) is provided with a receiving groove (731) and an opening (732); the receiving groove (731) and the opening (732) are interconnected and are used to receive glue, so that the first battery cell (71), the spacer column (73) and the second battery cell (72) are bonded and fixed.

7. The battery assembly according to claim 5, characterized in that: The first abutting surface (733) and the second abutting surface (734) are respectively provided on opposite sides of the spacer column (73), the number of the first abutting surface (733) and the number of the second abutting surface (734) are both two, the first battery cell (71) abuts against the first abutting surface (733), and the two first battery cells (71) are in contact; the second battery cell (72) abuts against the second abutting surface (734), and the two second battery cells (72) are in contact; The fixing plate (80) is provided with a first positioning groove (83) and a second positioning groove (84), and the battery upper cover (60) is provided with a third positioning groove (61) and a fourth positioning groove (62), the first positioning groove (83) and the third positioning groove (61) being used to position the two first battery cells (71), and the second positioning groove (84) and the fourth positioning groove (62) being used to position the two second battery cells (72).

8. The battery assembly according to claim 5, characterized in that: The first connecting sheet (74) is provided with two first welding holes (741), and the first welding holes (741) are used to facilitate welding of the positive electrode of the first battery cell (71) and the first connecting sheet (74); The second connecting sheet (75) is provided with four second welding holes (751), and the second welding holes (751) are used to facilitate welding the negative electrode of the first battery cell (71) and the positive electrode of the second battery cell (72) to the second connecting sheet (75) respectively; The third connecting sheet (76) is provided with two third welding holes (761), and the third welding holes (761) are used to facilitate welding of the negative electrode of the second battery cell (72) and the third connecting sheet (76).

9. The battery assembly according to claim 5 or 8, characterized in that: The first connecting piece (74) comprises a first bending portion (742) and a first welding portion (743) connected to each other, the second connecting piece (75) comprises a second bending portion (752) and a second welding portion (753) connected to each other, and the third connecting piece (76) comprises a third bending portion (762) and a third welding portion (763) connected to each other; The control board (10) is provided with a first soldering pad (15), a second soldering pad (16) and a third soldering pad (17); the first soldering portion (743) is soldered to the first soldering pad (15); the second soldering portion (753) is soldered to the second soldering pad (16); and the third soldering portion (763) is soldered to the third soldering pad (17).

10. The battery assembly according to claim 5 or 6, characterized in that: The control board (10) is provided with a plug hole (18), the fixing board (80) is provided with a plug post (85), a positioning post (51) is provided in the battery main shell (50), and one end of the plug post (85) passes through the plug hole (18) and is plugged into the positioning post (51); A limiting groove (52) is provided on the inner wall of the battery main shell (50), and a limiting protrusion (86) pluggably matched with the limiting groove (52) is provided on the side wall of the fixing plate (80), and the limiting protrusion (86) and the fixing plate (80) are an integrally formed structure.

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