A circuit board for a battery device and a battery assembly

Abstract

The present invention discloses a circuit board for a battery device and a battery assembly. The battery assembly specifically includes: a battery cell group and a circuit board for a battery device. A fixing plate is installed between the control board and the battery cell group. The battery cell group includes two first battery cells distributed in the same direction in a layered manner and two second battery cells distributed in the same direction in a layered manner. A spacer column is provided between the first battery cell and the second battery cell. Since the control board and the power supply board are connected by at least two copper conductive columns, heat generated by the control board and the power supply board can be quickly dissipated, and an overcurrent protection function can be achieved. The fixing plate can be used for positioning and assembling the control board and the battery cell group, and the spacer column is used for spacing and installing the first battery cell and the second battery cell to avoid short circuit phenomena. 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 the battery assembly in the prior art.

Description

Technical Field

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

[0002] A camera, abbreviated as a cam, is a device that uses the principle of optical imaging to form an image and uses a negative to record the image. There are many varieties of cameras, which can be classified into landscape photography cameras, printing plate-making cameras, digital cameras, document microfilm cameras, microcameras, underwater cameras, aerial cameras, high-speed cameras, etc. according to their uses; and into perspective view cameras, twin-lens reflex cameras, and single-lens reflex cameras according to their viewfinder methods.

[0003] In the prior art, a camera is powered by a battery assembly, and the battery assembly includes a battery cell and a circuit board for controlling the working state of the battery assembly. However, when the single running time of the battery assembly is too long, a large amount of heat is generated by the battery cell and the circuit board. Limited by the composition structure of the battery assembly, the heat dissipation efficiency of the battery assembly is low, which in turn affects the running performance of the battery assembly. Summary of the Invention

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

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] According to the first aspect, the present invention discloses a circuit board for a battery device, including: a control board and a power supply board arranged in parallel, the control board and the power supply board are connected by at least two copper conductive posts, and a power output interface for inputting a DC power supply to an electronic device is installed on the power supply board;

[0007] A first through hole corresponding to the copper conductive post is provided on the control board, and a second through hole corresponding to the copper conductive post is provided on the power supply board;

[0008] Wherein, the copper conductive post includes a first post, a second post and a third post connected in sequence, one end of the first post passes through the first through hole and is welded and fixed to the control board, and one end of the third post passes through the second through hole and is welded and fixed to the power supply board; the first post, the second post and the third post are all arranged in a cylindrical shape, and the outer diameter of the second post is larger than the outer diameter of the first post and the outer diameter of the third post;

[0009] One end of the second column is provided with a first contact surface, and the other end of the second column is provided with a second contact surface. The first contact surface is in contact with the control board, and the second contact surface is in contact with the power board; both the first contact surface and the second contact surface are annular planes.

[0010] Optionally, one end of the control board is provided with circular mounting holes. The two mounting holes are arranged opposite to each other, and the mounting holes are adjacent to the first through holes.

[0011] Optionally, a USB interface and a Type-C interface are installed at one end of the control board at intervals. The two Type-C interfaces are distributed at opposite ends of the USB interface;

[0012] A connection terminal is installed at the other end of the control board. The connection terminal includes a connection base. The control board is lapped on the connection base. At least two connection columns are embedded in the connection base, and the connection columns are electrically connected to the control board through wires.

[0013] According to a second aspect, the present invention discloses a battery assembly, including: a battery main case 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 case. The control board is electrically connected to the battery cell group. The control board is fixedly installed in the battery main case, and a fixing board is installed between the control board and the battery cell group;

[0014] Wherein, at least one cavity is provided in the fixing board. A notch communicating with the cavity is formed on one side wall of the fixing board. Part of the heat generated on the control board passes through the cavity and is discharged from the notch to prevent heat from accumulating in the cavity.

[0015] Optionally, the battery cell group includes two first battery cells distributed in a same-layer and same-direction manner and two second battery cells distributed in a same-layer and same-direction manner. A spacer column is provided between the first battery cells and the second battery cells. The spacer column is used to space the first battery cells and the second battery cells. The placement direction of the first battery cells is opposite to the placement direction of the second battery cells;

[0016] A first connection piece is connected to the positive electrodes of the two first battery cells. The negative electrodes of the two first battery cells and the positive electrodes of the two second battery cells are all connected to a second connection piece. A third connection piece is connected to the negative electrodes of the two second battery cells. The two first battery cells are connected in parallel, the two second battery cells are connected in parallel, and the first battery cells and the second battery cells are connected in series;

[0017] Wherein, the first connection piece, the second connection piece and the third connection piece are respectively welded and fixed to the control board.

[0018] Optionally, the end of the spacer post is provided with a receiving groove and an opening. The receiving groove communicates with the opening and is used to receive glue so as to bond and fix the first battery cell, the spacer post and the second battery cell.

[0019] Optionally, the opposite sides of the spacer post are respectively provided with a first abutting surface and a second abutting surface. The number of both the first abutting surface and the second abutting surface is two. The first battery cell abuts against the first abutting surface, and two first battery cells are in contact; the second battery cell abuts against the second abutting surface, and two second battery cells are in contact.

[0020] The fixing plate is provided with a first positioning groove and a second positioning groove, and the battery upper 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.

[0021] Optionally, two first welding holes are provided on the first connecting piece, and the first welding holes are used to facilitate the welding of the positive electrode of the first battery cell and the first connecting piece.

[0022] Four second welding holes are provided on the second connecting piece, and the second welding holes are used to facilitate the welding of the negative electrode of the first battery cell and the positive electrode of the second battery cell to the second connecting piece respectively.

[0023] Two third welding holes are provided on the third connecting piece, and the third welding holes are used to facilitate the welding of the negative electrode of the second battery cell and the third connecting piece.

[0024] 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.

[0025] Wherein, the control board is provided with a first solder pad, a second solder pad and a third solder pad. The first welding portion is welded to the first solder pad, the second welding portion is welded to the second solder pad, and the third welding portion is welded to the third solder pad.

[0026] Optionally, the control board is provided with a jack, the fixing plate is provided with a plug post, and the battery main case is provided with a positioning post. One end of the plug post passes through the jack and is in plug-in fit with the positioning post.

[0027] A limiting groove is provided on the inner wall of the battery main case, and a limiting protrusion adapted to be inserted into the limiting groove is provided on the side wall of the fixing plate. The limiting protrusion and the fixing plate are of an integral molding structure.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] For a circuit board and a battery assembly for a battery device provided by the present invention, since the control board and the power board are connected by at least two copper conductive posts, the heat generated by the control board and the power board can be quickly dissipated, and an overcurrent protection function can be achieved; the control board and the battery cell group can be positioned and assembled through the fixing board, and the first battery cell and the second battery cell can be spaced apart and installed through the spacer posts, avoiding short circuit phenomena, and also playing 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present invention.

[0032] Figure 1 FIG. 16 is one of the three-dimensional structure diagrams of a circuit board for a battery device disclosed in an embodiment of the present invention;

[0033] Figure 2 FIG. 20 is the second three-dimensional structure diagram of a circuit board for a battery device disclosed in an embodiment of the present invention;

[0034] Figure 3 FIG. 24 is the three-dimensional structure diagram of a copper conductive post in a circuit board for a battery device disclosed in an embodiment of the present invention;

[0035] Figure 4 FIG. 28 is one of the exploded structure diagrams of a battery assembly disclosed in an embodiment of the present invention;

[0036] Figure 5 FIG. 32 is the second exploded structure diagram of a battery assembly disclosed in an embodiment of the present invention;

[0037] Figure 6A top view of a battery assembly disclosed in an embodiment of the present invention;

[0038] Figure 7 is Figure 6 a schematic cross-sectional structure diagram of the A-A section;

[0039] Figure 8 A three-dimensional structure diagram of a fixing plate in a battery assembly disclosed in an embodiment of the present invention;

[0040] Figure 9 A three-dimensional structure diagram of a battery main case in a battery assembly disclosed in an embodiment of the present invention;

[0041] Figure 10 A three-dimensional structure diagram of a battery cell group disclosed in an embodiment of the present invention;

[0042] Figure 11 An exploded structure diagram of a battery cell group disclosed in an embodiment of the present invention;

[0043] Figure 12 A three-dimensional structure diagram of a spacer column of a battery assembly disclosed in an embodiment of the present invention;

[0044] Figure 13 Another three-dimensional structure diagram of a battery cell group disclosed in an embodiment of the present invention;

[0045] Figure 14 A three-dimensional structure diagram of a battery main case in a battery assembly disclosed in an embodiment of the present invention.

[0046] Illustration:

[0047] 10. Control board; 11. First through hole; 12. Mounting hole; 13. USB interface; 14. Type-C interface; 15. First pad; 16. Second pad; 17. Third pad; 18. Jack;

[0048] 20. Power board; 21. Power output interface; 22. Second through hole;

[0049] 30. Copper conductive column; 31. First column; 32. Second column; 321. First contact surface; 322. Second contact surface; 33. Third column;

[0050] 40. Connection terminal; 41. Connection seat; 42. Connection column;

[0051] 50. Battery main case; 51. Positioning column; 52. Limiting groove; 53. Support platform; 54. Limiting column;

[0052] 60. Battery upper cover; 61. Third positioning groove; 62. Fourth positioning groove;

[0053] 70. Battery cell group; 71. First battery cell; 72. Second battery cell; 73. Spacer post; 731. Accommodating groove; 732. Opening; 733. First abutting surface; 734. Second abutting surface; 74. First connecting piece; 741. First welding hole; 742. First bending part; 743. First welding part; 75. Second connecting piece; 751. Second welding hole; 752. Second bending part; 753. Second welding part; 76. Third connecting piece; 761. Third welding hole; 762. Third bending part; 763. Third welding part;

[0054] 80. Fixed plate; 81. Cavity; 82. Notch; 83. First positioning groove; 84. Second positioning groove; 85. Insertion post; 86. Limit projection;

[0055] 90. Charging base; 91. Anti-misinsertion port; 100. Charging cover; 110. Interface cover; 111. Insertion strip. Detailed implementation manners

[0056] To make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 thus cannot be construed as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present.

[0058] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0059] According to a first aspect, the present invention discloses a circuit board for a battery device, as Figures 1-14 shown, including: 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 posts 30. A power output interface 21 for inputting a DC power supply to an electronic device is installed on the power board 20;

[0060] The control board 10 is provided with a first through hole 11 corresponding to the copper conductive post 30, and the power supply board 20 is provided with a second through hole 22 corresponding to the copper conductive post 30. Both the first through hole 11 and the second through hole 22 are circular holes.

[0061] Among them, the copper conductive post 30 includes a first post 31, a second post 32, and a third post 33 connected in sequence. One end of the first post 31 passes through the first through hole 11 and is welded and fixed to the control board 10, and one end of the third post 33 passes through the second through hole 22 and is welded and fixed to the power supply board 20. The first post 31, the second post 32, and the third post 33 are all cylindrical. The outer diameter of the second post 32 is greater than the outer diameters of the first post 31 and the third post 33. In this embodiment, the outer wall surface of the copper conductive post 30 is gold-plated to further enhance the overcurrent protection effect of the copper conductive post 30.

[0062] One end of the second post 32 is provided with a first contact surface 321, and the other end of the second post 32 is provided with a second contact surface 322. The first contact surface 321 is in contact with the control board 10, and the second contact surface 322 is in contact with the power supply board 20. Both the first contact surface 321 and the second contact surface 322 are annular planes. The copper conductive post 30 adopts a multi-segment cylinder design, and the outer diameter of the second post 32 is greater than that of the first post 31 and the third post 33, making its structural connection more stable. At the same time, the mechanical pressure applied to the copper conductive post is dispersed, reducing the loss of the connection part. The two ends of the second post 32 are respectively designed as annular planes, which can ensure a firm connection between the control board and the power supply board and better electrical conductivity.

[0063] It should be noted that for a circuit board and a battery assembly for a battery device provided by the present invention, since the control board 10 and the power supply board 20 are connected by at least two copper conductive posts 30, the heat generated by the control board 10 and the power supply board 20 can be quickly dissipated, and an overcurrent protection function can be achieved. The copper conductive post 30 has a supporting effect on the power supply board 20.

[0064] As Figures 1-3 shown, one end of the control board 10 is provided with a circular installation hole 12. The two installation holes 12 are arranged oppositely, and the installation hole 12 is adjacent to the first through hole 11. In this embodiment, the number of installation holes 12 is set to two. After the installation screws pass through the installation holes 12 and are threadedly connected to the battery main case 50, the control board 10 can be firmly installed in the battery main case 50.

[0065] As Figures 1-3 shown, a USB interface 13 and a Type-C interface 14 are installed at one end of the control board 10 at intervals. The two Type-C interfaces 14 are distributed at opposite ends of the USB interface 13. In this embodiment, through the settings of the USB interface 13 and the Type-C interface 14, it is convenient for the battery assembly to be connected to an external electronic device to realize power supply.

[0066] At the other end of the control board 10, a connection terminal 40 is installed. The connection terminal 40 includes a connection base 41. The control board 10 is lapped on the connection base 41. At least two connection posts 42 are embedded in the connection base 41. The connection posts 42 and the control board 10 are electrically connected through wires. In the specific implementation process, the number of the connection posts 42 is set to five. One of the connection posts 42 is used to connect the positive electrode of the battery assembly, and another connection post 42 is used to connect the negative electrode of the battery assembly. The other three connection posts 42 can be used for data communication connection, which is convenient for detecting and controlling the working state of the battery assembly. Through the setting of the connection terminal 40, the battery assembly can be conveniently electrically connected to the camera.

[0067] According to the second aspect, the present invention discloses a battery assembly, as Figures 1-14 shown, including: a battery main case 50 and a battery upper cover 60 which are connected to each other. A battery cell group 70 and a circuit board for the battery device as in the first aspect are installed in the battery main case 50. The control board 10 is electrically connected to the battery cell group 70. The control board 10 is fixedly installed in the battery main case 50. A fixing board 80 is installed between the control board 10 and the battery cell group 70;

[0068] Wherein, at least one cavity 81 is provided in the fixing board 80. A notch 82 communicating with the cavity 81 is formed on one side wall of the fixing board 80. Part of the heat generated on the control board 10 passes through the cavity 81 and is discharged from the notch 82, so as to avoid heat accumulation in the cavity 81. It should be noted that due to the settings 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, and preventing the occurrence of heat aggregation phenomenon; thereby improving the heat dissipation effect of the battery assembly. The existence of the cavity 81 reduces the weight of the fixing board 80 to a certain extent while maintaining its functionality, optimizes the overall design of the battery assembly, and makes it more suitable for application in portable devices.

[0069] As Figures 10-12As shown, the battery cell group 70 includes two first battery cells 71 distributed in a layered manner in the same direction and two second battery cells 72 distributed in a layered manner in the same direction. An interval column 73 is provided between the first battery cells 71 and the second battery cells 72. The interval column 73 is used to space the first battery cells 71 and the second battery cells 72. The placement direction of the first battery cells 71 is opposite to the placement direction of the second battery cells 72. The interval column 73 also has a heat insulation effect, reducing the risk of performance degradation caused by high temperature between adjacent battery cells. The interval column 73 provided between the first battery cells 71 and the second battery cells 72 plays a role of physical isolation, not only effectively avoiding the short - circuit risk between battery cells, but also increasing the heat dissipation space through the interval design, reducing the heat accumulation between battery cells, and improving the thermal management performance of the entire battery assembly. The layout of the battery cell group 70 allows the number and arrangement of battery cells to be adjusted according to actual needs. For example, more parallel and series units can be added to meet the battery capacity requirements of different application scenarios, and the structure installation can be made more compact, saving space.

[0070] A first connection piece 74 is connected to the positive electrodes of the two first battery cells 71. 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 connection piece 75. A third connection piece 76 is connected to the negative electrodes of the two second battery cells 72. The two first battery cells 71 are connected in parallel, the two second battery cells 72 are connected in parallel, and the first battery cells 71 and the second battery cells 72 are connected in series. By connecting the first battery cells 71 and the second battery cells 72 in series, the capacitance of the battery assembly can be increased. Both the first battery cells 71 and the second battery cells 72 are lithium batteries.

[0071] Among them, the first connection piece 74, the second connection piece 75, and the third connection piece 76 are respectively welded and fixed to the control board 10.

[0072] Exemplarily, as Figure 13 shown, the number of the first battery cells 71 is set to four, the number of the second connection pieces 75 is set to two, and the number of the first connection piece 74 and the third connection piece 76 is set to one. Among them, after two first battery cells 71 are connected in parallel, they are successively connected in series with two second battery cells 72 connected in parallel and another two first battery cells 71 connected in parallel, realizing the parallel - series connection mode of the battery cell group 70. Therefore, the number of the first battery cells 71 and the second battery cells 72 is not limited, and the corresponding number can be arranged according to the capacitance required by the battery.

[0073] As Figures 10-12As shown, the end of the spacer post 73 is provided with a receiving groove 731 and an opening 732. The receiving groove 731 and the opening 732 are in communication with each other and are used to receive glue, so as to bond and fix the first battery cell 71, the spacer post 73, and the second battery cell 72. It should be noted that by injecting glue into the receiving groove 731, the first battery cell 71, the spacer post 73, and the second battery cell 72 can be bonded and fixed, improving the structural stability of the battery cell group 70. The multi-functional design of the spacer post 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 mechanical vibration.

[0074] As Figures 4-12 shown, the opposite sides of the spacer post 73 are respectively provided with a first abutting surface 733 and a second abutting surface 734. The number of the first abutting surface 733 and the second abutting surface 734 is 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, by the first battery cell 71 abutting against the first abutting surface 733 and the second battery cell 72 abutting against the second abutting surface 734, the spacer post 73 better spaces and supports the first battery cell 71 and the second battery cell 72. The standardized design of the spacer post 73 allows it to be flexibly adapted to different battery cell combinations, and at the same time supports flexible series and parallel combinations, facilitating the expansion of the capacity and performance of the battery assembly and meeting the requirements of more application scenarios.

[0075] 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 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 shape. By positioning the two first battery cells 71 through the first positioning groove 83 and the third positioning groove 61, and positioning the two second battery cells 72 through the second positioning groove 84 and the fourth positioning groove 62, the positioning and installation of the battery cell group 70 are realized. The setting of the positioning grooves simplifies the installation process of the battery cells, enabling the operator to quickly and correctly position and install the battery cells, reducing the assembly time, and improving the production efficiency. The arc-shaped structure of the positioning grooves further reduces the resistance when installing the battery cells, making the assembly process smoother.

[0076] As Figure 11 shown, the first connecting piece 74 is provided with two first welding holes 741, and the first welding holes 741 are used to facilitate the welding of the positive electrode of the first battery cell 71 and the first connecting piece 74; in the specific implementation process, the first welding holes 741 are arranged in a long strip shape;

[0077] Four second welding holes 751 are provided on the second connecting piece 75. The second welding holes 751 are used to facilitate the welding of the negative electrode of the first battery cell 71 and the positive electrode of the second battery cell 72 to the second connecting piece 75 respectively. In the specific implementation process, the second welding holes 751 are arranged in a strip shape;

[0078] Two third welding holes 761 are provided on the third connecting piece 76. The third welding holes 761 are used to facilitate the welding of the negative electrode of the second battery cell 72 to the third connecting piece 76. In the specific implementation process, the third welding holes 761 are arranged in a strip shape, and round holes are provided on the third connecting piece 76.

[0079] It should be noted that through the settings of the first welding holes 741, the second welding holes 751, and the third welding holes 761, it is convenient for the battery cell group 70 to be welded and assembled.

[0080] As Figure 11 shown, the first connecting piece 74 includes a first bending portion 742 and a first welding portion 743 that are connected to each other, the second connecting piece 75 includes a second bending portion 752 and a second welding portion 753 that are connected to each other, and the third connecting piece 76 includes a third bending portion 762 and a third welding portion 763 that are 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 settings 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, facilitating subsequent welding operations. 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 case 50, further limiting the battery cell group 70 to prevent the battery cell group 70 from shaking inside the battery main case 50.

[0081] It should be noted that the first bending portion 742, the second bending portion 752, and the third bending portion 762 all adopt a V-shaped design, enabling each connecting piece to be flexibly bent and adjusted in 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 to the pads (the first pad 15, the second pad 16, and the third pad 17) of the control board 10. Through the V-shaped bending portion, the stress at the welding point is effectively dispersed. Compared with the traditional straight connecting piece design, this solution provides better tensile and fatigue resistance performance at the welding point, ensuring long-term stable 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.

[0082] 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 part 743 is welded to the first pad 15, the second welding part 753 is welded to the second pad 16, and the third welding part 763 is welded to the third pad 17. It should be noted that through the settings 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 designs of the first pad 15, the second pad 16, and the third pad 17 are precisely matched with the welding parts of the respective connecting pieces, enabling different types of connecting pieces to be quickly installed. The standardized design of the pads also enhances the compatibility of the battery assembly during production and maintenance.

[0083] As Figure 2 , Figure 7 , Figure 8 and Figure 14 shown, the control board 10 is provided with a jack 18, the fixing board 80 is provided with a plug post 85, and the battery main case 50 is provided with a positioning post 51. One end of the plug post 85 passes through the jack 18 and is in plug-in fit with the positioning post 51; in this embodiment, the numbers of the plug post 85, the jack 18, and the positioning post 51 are all set to two; through the plug-in fit of the plug post 85 and the positioning post 51, it is convenient to position and install the circuit board and the battery cell group 70 in the battery main case 50.

[0084] A limiting groove 52 is provided on the inner wall of the battery main case 50, and a limiting protrusion 86 adapted to be plugged into the limiting groove 52 is provided on the side wall of the fixing board 80. The limiting protrusion 86 and the fixing board 80 are of an integrally formed structure. In the specific implementation process, the numbers of the limiting groove 52 and the limiting protrusion 86 are set to six. Through the limiting fit of the limiting protrusion 86 and the limiting groove 52, the fixing board 80 is limit-installed in the battery main case 50, and then the control board 10 of the circuit board can be limit-installed. The longitudinal fit of the plug post 85 and the positioning post 51, together with the lateral fit of the limiting protrusion 86 and the limiting groove 52, jointly form multi-directional fixation of the control board 10, the fixing board 80, and the battery cell group 70, significantly enhancing the comprehensive stability of the assembly. This multi-directional fixation method effectively prevents the problems of component offset or looseness caused by vibration or mechanical shock. The designs of the plug post 85, the jack 18, and the positioning post 51 provide a clear positioning reference for the assembly process, reducing human assembly errors and at the same time accelerating the production assembly speed.

[0085] As Figures 1-14As shown in the figure, there are four support platforms 53 inside the main battery case 50. The support platforms 53 are used to support the power supply board 20. Among them, two support platforms 53 are respectively provided with limit posts 54. The limit posts 54 pass through the power supply board 20, and the limit posts 54 correspond to the copper conductive posts 30 one by one. A charging base 90 is installed on one side of the main battery case 50. A charging cover 100 is installed at the charging base 90. The charging cover 100 is movably clamped with the main battery case 50. The charging cover 100 is inserted and matched with the charging base 90. The charging base 90 is provided with an anti-fooling port 91. Through the setting of the anti-fooling port 91, it is possible to prevent the interface of the external charger from being inserted reversely and achieve safe charging. An interface cover 110 is movably clamped on the main battery case 50. The interface cover 110 is used to cover the power output interface 21, the USB interface 13 and the Type-C interface 14. The interface cover 110 is provided with an insertion strip 111 that is inserted and matched with the USB interface 13.

[0086] Working principle: A circuit board for a battery device and a battery assembly provided by the present invention. The battery assembly specifically includes: a battery cell group 70 and a circuit board for a battery device. 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 the same direction in a layered manner and two second battery cells 72 distributed in the same direction in a layered manner. An interval column 73 is provided between the first battery cell 71 and the second battery cell 72. Since the control board 10 and the power supply board 20 are connected by at least two copper conductive posts 30, the heat generated by the control board 10 and the power supply board 20 can be quickly dissipated, and an overcurrent protection function can be achieved; through the fixing plate 80, the control board 10 and the battery cell group 70 can be positioned and assembled, and the first battery cell 71 and the second battery cell 72 are spaced apart by the interval column 73 to avoid short circuit phenomena, and at the same time, it can also play a heat insulation role and reduce the influence of excessive temperature between adjacent two battery cells. Therefore, the present invention can solve the technical problem of low heat dissipation efficiency of the battery assembly in the prior art.

[0087] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various 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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