A terminal
Patent Information
- Application Number
- CN202521819002.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-08-25
AI Technical Summary
[0005]有鉴于此,本申请提供了一种终端,以解决或改善终端内部空间有限,无法提高电芯容量的问题
[0005]有鉴于此,本申请提供了一种终端,以解决或改善终端内部空间有限,无法提高电芯容量的问题。
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Figure CN224804123U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, specifically to a terminal. Background Technology
[0002] As electronic devices become increasingly powerful, their power consumption increases significantly. The battery is housed in a fixed slot within the device, and this slot's space cannot be changed. Improving battery life requires increasing battery capacity, but this increases battery size, consequently increasing the overall size of the phone.
[0003] In related technologies, the tabs of the battery cell extend from one side of the cell, and charging and discharging occur on the same side. The circuit elements that protect against charging and discharging are located on the same side of the cell, which results in the battery occupying too much space on this side. Within the limited space of the battery compartment, the volume of the battery cell is limited, and thus the capacity is limited, making it impossible to increase the capacity by increasing the battery volume.
[0004] In related technologies, battery protection board devices are concentrated on the PCB (circuit board) at the head of the battery, and charging and discharging are performed on a single PCB. This increases the space at the head of the battery, and the limited space in the battery slot prevents the battery volume from increasing, thus limiting the improvement of battery capacity. Utility Model Content
[0005] In view of this, this application provides a terminal to solve or improve the problem that the limited internal space of the terminal makes it impossible to increase the cell capacity.
[0006] This application provides a terminal, including: a motherboard area, a battery cell area, and a small board area that are misaligned;
[0007] The motherboard area is provided with a motherboard, the battery cell area is provided with a battery cell, and the small board area is provided with a small board;
[0008] One end of the battery cell is provided with a first tab group for charging, and the other end of the battery cell is provided with a second tab group for discharging.
[0009] A first connector is provided with a discharge protection device. The first connector is located in the motherboard area. The first electrode group is electrically connected to the motherboard through the first connector.
[0010] The second connector is provided with a charging protection device. The second connector is located in the area of the small board. The second electrode group is electrically connected to the small board through the second connector.
[0011] In this embodiment, the battery cells are installed in the battery cell area, the main board is located in the main board area, and the small board is located in the small board area. The main board area, battery cell area and small board area are staggered to make reasonable use of the internal space of the terminal.
[0012] The first connector is connected to a discharge protection device, and the first connector is connected to the motherboard and the first tab group. Connecting the discharge protection device to the motherboard outside the cell area and transferring the discharge protection device from the cell area to the motherboard area can increase the usable space of the cell in the cell area, increase the volume of the cell, and thus increase the capacity of the cell.
[0013] The second connector is connected to a charging protection device, and the second connector is connected to a small board and a second tab assembly. The charging protection device is connected to the small board outside the cell area, and the charging protection device is transferred from the cell area to the small board area, which further increases the usable space of the cell in the cell area, increases the volume of the cell, and thus increases the capacity of the cell.
[0014] In one optional implementation, the first electrode group includes: a first positive electrode and a first negative electrode;
[0015] The first connector includes two first connecting parts and a discharge part. The first ends of the two first connecting parts are connected to the first end of the discharge part, and the second ends of the two first connecting parts are respectively connected to the first positive tab and the first negative tab. The second end of the discharge part is connected to the motherboard. The discharge protection device is disposed on the discharge part.
[0016] In one optional embodiment, each of the first ends of the two first connecting portions is provided with a first plug-in interface, and the first positive electrode and the first negative electrode are respectively plugged into the two first plug-in interfaces.
[0017] In one optional embodiment, the first connector further includes a discharge latch, which is disposed on the motherboard and is inserted into the second end of the discharge section.
[0018] In one optional embodiment, the second electrode group includes: a second positive electrode and a second negative electrode;
[0019] The second connector includes two second connecting parts and a charging part. The first ends of the two second connecting parts are connected to the first end of the charging part, and the second ends of the two second connecting parts are respectively connected to the second positive tab and the second negative tab. The second end of the charging part is connected to the small board. The charging protection device is disposed on the charging part.
[0020] In one optional embodiment, each of the first ends of the two second connecting portions is provided with a second plug-in interface, and the second positive electrode and the second negative electrode are respectively plugged into the two second plug-in interfaces.
[0021] In one alternative embodiment, the second connector further includes a charging buckle disposed on the small plate and inserted into the second end of the charging part.
[0022] In one alternative embodiment, the battery cell has a first side end and a second side end arranged opposite to each other along a first direction, the first positive tab and the first negative tab being connected to the first side end; the second positive tab and the second negative tab being connected to the second side end.
[0023] In one alternative embodiment, the first positive electrode tab and the second positive electrode tab are staggered along the second direction, and the first negative electrode tab and the second negative electrode tab are staggered along the second direction, wherein the first direction and the second direction intersect.
[0024] In one optional embodiment, it further includes: a housing and a charging terminal, wherein the housing is provided with a battery slot, the battery slot is provided with the battery cell area, a charging port is provided on one side of the housing, the charging port is provided with the small board area, the charging terminal is disposed in the charging port and connected to the small board, and a mounting slot is provided inside the housing, the mounting slot is provided with the main board area. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of a battery cell in a terminal according to an embodiment of this application;
[0027] Figure 2 This is a schematic diagram of the structure of a terminal according to an embodiment of this application.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Battery cell; 101. First side end; 102. Second side end; 2. Main board; 3. Small board; 4. First tab group; 401. First positive tab; 402. First negative tab; 5. Second tab group; 501. Second positive tab; 502. Second negative tab; 6. First connector; 601. First connecting part; 6011. First plug-in interface; 6012. Discharge plug; 602. Discharge part; 7. Second connector; 701. Second connecting part; 7011. Second plug-in interface; 7012. Charging plug; 702. Charging part; 8. Discharge protection device; 9. Charging protection device; X, First direction; Y, Second direction. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0033] As electronic devices become increasingly powerful, their power consumption increases significantly. The battery is housed in a fixed slot within the device, and this slot's space cannot be changed. Improving battery life requires increasing battery capacity, but this increases battery size, consequently increasing the overall size of the phone.
[0034] In related technologies, the tabs of the battery cell extend from one side of the cell, and charging and discharging occur on the same side. The circuit elements that protect against charging and discharging are located on the same side of the cell, which results in the battery occupying too much space on this side. Within the limited space of the battery compartment, the volume of the battery cell is limited, and thus the capacity is limited, making it impossible to increase the capacity by increasing the battery volume.
[0035] In related technologies, battery protection board devices are concentrated on the PCB (circuit board) at the battery head, and charging and discharging are performed on a single PCB. This increases the space at the battery head, and the limited space in the battery compartment restricts the increase in battery volume and capacity. Therefore, this application provides a terminal to solve or improve the problem of limited internal space that limits the increase in cell capacity.
[0036] The following is combined with Figures 1 to 2 This describes an embodiment of the present application.
[0037] According to embodiments of this application, such as Figures 1 to 2 As shown, a terminal is provided, including: a first connector 6 and a second connector 7, as well as a motherboard area, a battery cell area and a small board area that are staggered.
[0038] Specifically, the main board area is equipped with a main board 2, the battery cell area is equipped with a battery cell 1, and the small board area is equipped with a small board 3; one end of the battery cell 1 is equipped with a first tab group 4 for charging, and the other end of the battery cell 1 is equipped with a second tab group 5 for discharging.
[0039] The first connector 6 is provided with a discharge protection device 8. The first connector 6 is located in the motherboard area. The first electrode group 4 is electrically connected to the motherboard 2 through the first connector 6.
[0040] The second connector 7 is equipped with a charging protection device 9. The second connector 7 is located in the area of the small board. The second electrode group 5 is electrically connected to the small board 3 through the second connector 7.
[0041] In this embodiment, such as Figures 1 to 2 As shown, the battery cell 1 is installed in the battery cell area, the main board 2 is located in the main board 2 area, and the small board 3 is located in the small board 3 area. The main board area, battery cell area and small board area are staggered to make reasonable use of the internal space of the terminal.
[0042] The first connector 6 is connected to a discharge protection device 8, and the first connector 6 is connected to the main board 2 and the first tab group 4. The discharge protection device 8 is connected to the main board 2 outside the cell 1 area. The discharge protection device 8 is transferred from the cell 1 area to the main board 2 area, which can increase the usable space of the cell 1 in the cell area, increase the volume of the cell 1, and thus increase the capacity of the cell 1.
[0043] The second connector 7 is connected to a charging protection device 9, and the second connector 7 is connected to the small board 3 and the second tab group 5. The charging protection device 9 is connected to the small board 3 outside the cell 1 area, and the charging protection device 9 is transferred from the cell 1 area to the small board 3 area, which further increases the usable space of the cell 1 in the cell area, increases the volume of the cell 1, and thus increases the capacity of the cell 1.
[0044] In one embodiment, such as Figures 1 to 2 As shown, the first electrode group 4 includes: a first positive electrode 401 and a first negative electrode 402;
[0045] The first connector 6 includes two first connecting parts 601 and a discharge part 602. The first ends of the two first connecting parts 601 are connected to the first end of the discharge part 602, and the second ends of the two first connecting parts 601 are connected to the first positive electrode tab 401 and the first negative electrode tab 402, respectively. The second end of the discharge part 602 is connected to the main board 2. The discharge protection device 8 is disposed on the discharge part 602.
[0046] In this embodiment, the two first connecting parts 601 are connected to the first positive electrode tab 401 and the first negative electrode tab 402, and the discharge part 602 is connected to the motherboard 2. The electrical energy of the battery cell 1 is output to the motherboard 2 through the first connecting member 6, and is connected to the discharge protection device 8 through the first connecting member 6. The discharge protection device 8 can be transferred from the battery cell area to the motherboard 2 area, saving space in the battery cell area.
[0047] In one embodiment, such as Figures 1 to 2 As shown, each of the two first connecting parts 601 has a first plug-in interface 6011 at its first end, and the first positive electrode ear 401 and the first negative electrode ear 402 are respectively plugged into the two first plug-in interfaces 6011.
[0048] In this embodiment, the first positive tab 401 and the first negative tab 402 are respectively connected to the two first connecting parts 601 through two first plug-in interfaces 6011. The connection method is simple and easy to disassemble and assemble. At the same time, the plug-in connection can improve assembly efficiency and shorten maintenance and replacement time.
[0049] In one embodiment, such as Figures 1 to 2 As shown, the first connector 6 also includes a discharge plug 6012, which is disposed on the main board 2 and is plugged into the second end of the discharge part 602.
[0050] In this embodiment, the discharge plug 6012 is connected to the motherboard 2 and plugged into the second end of the discharge part 602. The discharge plug 6012 is suitable for plugging into the power unit, making the connection more convenient. The plug-in connection can improve assembly efficiency and shorten maintenance and replacement time.
[0051] In one embodiment, such as Figures 1 to 2 As shown, the second electrode group 5 includes: a second positive electrode 501 and a second negative electrode 502;
[0052] The second connector 7 includes two second connectors 701 and a charging part 702. The first ends of the two second connectors 701 are connected to the first end of the charging part 702. The second ends of the two second connectors 701 are connected to the second positive tab 501 and the second negative tab 502, respectively. The second end of the charging part 702 is connected to the small board 3. The charging protection device 9 is disposed on the charging part 702.
[0053] In this embodiment, such as Figures 1 to 2 As shown, the two second connecting parts 701 are connected to the second positive tab 501 and the second negative tab 502. The charging part 702 is connected to the small board 3, which transmits the power of the power supply to the small board 3. Then, through the two second connecting parts 701, the second positive tab 501 and the second negative tab 502, the power is transmitted to the battery cell 1. The second connecting part 7 is connected to the charging protection device 9, which makes it easy to transfer the charging protection device 9 from the battery cell area to the small board 3 area, saving space in the battery cell area.
[0054] In one embodiment, such as Figures 1 to 2 As shown, each of the two second connecting parts 701 has a second plug-in interface 7011 at its first end, and the second positive electrode ear 501 and the second negative electrode ear 502 are respectively plugged into the two second plug-in interfaces 7011.
[0055] In this embodiment, the second positive tab 501 and the second negative tab 502 are respectively connected to the two second connecting parts 701 through two second plug-in interfaces 7011. The connection method is simple and easy to disassemble and assemble. At the same time, the plug-in connection can improve assembly efficiency and shorten maintenance and replacement time.
[0056] In one embodiment, such as Figures 1 to 2 As shown, the second connector 7 also includes a charging buckle 7012, which is disposed on the small plate 3 and is plugged into the second end of the charging part 702.
[0057] In this embodiment, the connection is made more convenient by using the charging snap 7012. The snap-on connection can improve assembly efficiency and shorten maintenance and replacement time.
[0058] In this embodiment, the charging plug 7012 is connected to the small plate 3 and plugged into the second end of the charging part 702. The charging plug 7012 is suitable for plugging into the charger plug, making the connection more convenient. The plug-in connection can improve assembly efficiency and shorten maintenance and replacement time.
[0059] In one embodiment, such as Figures 1 to 2As shown, the battery cell 1 has a first side end 101 and a second side end arranged opposite to each other along a first direction X. A first positive electrode tab 401 and a first negative electrode tab 402 are connected to the first side end 101; a second positive electrode tab 501 and a second negative electrode tab 502 are connected to the second side end.
[0060] In this embodiment, by placing the first positive tab 401 and the first negative tab 402 for discharging, and the second positive tab 501 and the second negative tab 502 for charging at both ends of the battery cell 1, the traditional single-sided layout limitation is broken, the space occupied on one side is effectively reduced, the space utilization rate is improved, and the separation of the charging and discharging circuits disperses the heat source and improves the heat dissipation effect.
[0061] like Figures 1 to 2 As shown, a first positive tab 401 and a first negative tab 402 are provided on the first side end 101. The first positive tab 401 and the first negative tab 402 are connected to two first connecting parts 601. The discharge part 602 is connected to the discharge protection device 8, so that the battery cell 1 can stably output current. A second positive tab 501 and a second negative tab 502 are provided on the second side end. The second positive tab 501 and the second tab are connected to two second connecting parts 701. The charging part 702 is connected to the charging protection device 9. The charging protection device 9 is connected to the small board 3. The power supply delivers electrical energy to the battery cell 1 through the second positive tab 501 and the second negative tab 502. The battery cell 1 discharges at one end and charges at the other end, improving the charging and discharging efficiency.
[0062] In one embodiment, such as Figures 1 to 2 As shown, the first positive electrode tab 401 and the second positive electrode tab 501 are staggered along the second direction Y, and the first negative electrode tab 402 and the second negative electrode tab 502 are staggered along the second direction Y. The first direction X and the second direction Y intersect.
[0063] In some embodiments, such as Figures 1 to 2 As shown, the staggered arrangement can improve the smoothness of current flow during the charging and discharging process of cell 1, thereby improving the charging and discharging effect; the charging and discharging circuits are physically isolated, reducing the risk of electromagnetic interference.
[0064] Specifically, the first direction X is perpendicular to the second direction Y.
[0065] In one embodiment, such as Figures 1 to 2 As shown, it also includes: a housing and a charging terminal. The housing is provided with a battery slot, which corresponds to the cell area, i.e., the battery slot has a cell area. At least a portion of the battery slot forms a battery area to place the cell. A charging port is provided on one side of the housing, which corresponds to the small board area, i.e., the charging port has a small board area to place the small board. The charging terminal is provided in the charging port and connected to the small board 3. An installation slot is provided inside the housing, which corresponds to the motherboard area, i.e., the installation slot has a motherboard area. At least a portion of the installation slot forms a motherboard area to place the motherboard.
[0066] In this embodiment, the charging terminal is located on the charging port. One end of the charging terminal is connected to the small board 3, and the other end is used to connect to the charger connector. The charger connector is connected to the power supply to charge the battery cell 1. The current passes through the charging terminal, the small board 3, and the charging board protection device, and then is delivered to the battery cell 1 through the second connector 7 and the second tab group 5 for charging. Neither the main board 2 nor the small board 3 is located in the battery cell area, that is, it is not located in the battery slot. The main board 2 and the small board 3 do not occupy the space of the battery slot, which can increase the space occupied by the battery cell 1 in the battery slot, increase the volume of the battery cell 1, and thus increase the capacity of the battery cell 1.
[0067] The following is an example, combined with Figures 1 to 2 A comprehensive explanation of all the above-mentioned plans is provided.
[0068] One end of the battery cell 1 is connected to a first positive tab 401 and a first negative tab 402 for discharging, and the other end of the battery cell 1 is connected to a second positive tab 501 and a second negative tab 502 for charging; a discharge protection device 8 is connected to a first connector 6, and the discharge protection device 8 is connected to the first positive tab 401 and the first negative tab 402; a charging protection device 9 is connected to a second connector 7, and the second connector 7 is connected to the second positive tab 501 and the second negative tab 502.
[0069] The battery cell 1 is installed inside the battery slot. The charging protection device 9 is connected to the small board 3, and the discharging protection device 8 is connected to the main board 2. This design does not occupy space within the battery slot, which only accommodates the battery cell 1. Therefore, the volume of the battery cell 1 can be increased, thereby increasing the battery capacity. By placing the first positive tab 401 and the first negative tab 402 for discharging, and the second positive tab 501 and the second negative tab 502 for charging at opposite ends of the battery cell 1, the traditional single-sided layout limitation is broken, effectively reducing single-sided space occupation and improving space utilization. The separation of the charging and discharging circuits disperses the heat source, improving heat dissipation.
[0070] A first positive tab 401 and a first negative tab 402 are provided on the first side end 101. The first positive tab 401 and the first negative tab 402 are used to connect to the discharge protection device 8. The battery cell 1 supplies electrical energy to the discharge protection device 8 through the first positive tab 401 and the first negative tab 402. The electrical energy is then supplied to the power consumption unit through the discharge protection device 8. A second positive tab 501 and a second negative tab 502 are provided on the second side end. The second positive tab 501 and the second tab 502 are connected to the charging protection device 9. The charging protection device 9 is mounted on the small board 3 and connected to the charging terminal through the small board 3. The power supply is connected to the charging terminal and charges the battery cell 1 through the second positive tab 501 and the second negative tab 502. The battery discharges at one end and charges at the other end, improving the charging and discharging efficiency. The battery discharges unidirectionally to supply power to the power consumption unit that provides the terminal. The power supply is connected to the charging terminal on the small board 3 for convenient high-power charging.
[0071] The first positive electrode tab 401 and the second positive electrode tab 501 are staggered along the second direction Y, and the first negative electrode tab 402 and the second negative electrode tab 502 are also staggered along the second direction Y. This staggered arrangement improves the smoothness of current flow during charging and discharging of the battery cell 1, thus enhancing the charging and discharging effect. Physical isolation of the charging and discharging circuits reduces the risk of electromagnetic interference.
[0072] The two first connecting parts 601 are respectively connected to the first positive electrode 401 and the first negative electrode 402, and the charging part 702 is connected to the charging protection device 9. The structure is simpler and saves space.
[0073] The connection is made easier by using the charging snap-on connector 7012 and the discharging snap-on connector 6012. This snap-on connection improves assembly efficiency and reduces repair and replacement time.
[0074] The first positive tab 401 and the first negative tab 402 are respectively connected to the two first plug-in interfaces 6011, and the second positive tab 501 and the second negative tab 502 are respectively connected to the two second plug-in interfaces 7011. The connection method is simple, and the snap-fit connection can improve assembly efficiency and shorten maintenance and replacement time.
[0075] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended application.
Claims
1. A terminal, characterized in that, include: The motherboard area, battery cell area, and small board area are misaligned. The main board area is provided with a main board (2), the battery cell area is provided with a battery cell (1), and the small board area is provided with a small board (3); One end of the battery cell (1) is provided with a first tab group (4) for charging, and the other end of the battery cell (1) is provided with a second tab group (5) for discharging. The first connector (6) is provided with a discharge protection device (8). The first connector (6) is located in the motherboard area. The first tab group (4) is electrically connected to the motherboard (2) through the first connector (6). The second connector (7) is provided with a charging protection device (9). The second connector (7) is located in the area of the small board. The second tab group (5) is electrically connected to the small board (3) through the second connector (7).
2. The terminal according to claim 1, characterized in that, The first electrode group (4) includes: a first positive electrode (401) and a first negative electrode (402); The first connector (6) includes two first connecting parts (601) and a discharge part (602). The first ends of the two first connecting parts (601) are connected to the first end of the discharge part (602). The second ends of the two first connecting parts (601) are connected to the first positive electrode (401) and the first negative electrode (402) respectively. The second end of the discharge part (602) is connected to the motherboard (2). The discharge protection device (8) is disposed on the discharge part (602).
3. The terminal according to claim 2, characterized in that, Each of the two first connecting parts (601) has a first plug-in interface (6011) at its first end, and the first positive electrode (401) and the first negative electrode (402) are respectively plugged into the two first plug-in interfaces (6011).
4. The terminal according to claim 2 or 3, characterized in that, The first connector (6) further includes a discharge plug (6012), which is disposed on the main board (2) and is inserted into the second end of the discharge part (602).
5. The terminal according to claim 2, characterized in that, The second electrode group (5) includes: a second positive electrode (501) and a second negative electrode (502); The second connector (7) includes two second connecting parts (701) and a charging part (702). The first ends of the two second connecting parts (701) are connected to the first end of the charging part (702). The second ends of the two second connecting parts (701) are connected to the second positive tab (501) and the second negative tab (502) respectively. The second end of the charging part (702) is connected to the small plate (3). The charging protection device (9) is disposed on the charging part (702).
6. The terminal according to claim 5, characterized in that, The first ends of the two second connecting parts (701) are provided with second plug-in interfaces (7011), and the second positive electrode (501) and the second negative electrode (502) are respectively plugged into the two second plug-in interfaces (7011).
7. The terminal according to claim 5 or 6, characterized in that, The second connector (7) also includes a charging buckle (7012), which is disposed on the small plate (3) and is plugged into the second end of the charging part (702).
8. The terminal according to claim 5, characterized in that, The battery cell (1) has a first side end (101) and a second side end arranged opposite to each other along a first direction (X), the first positive electrode tab (401) and the first negative electrode tab (402) are connected to the first side end (101); the second positive electrode tab (501) and the second negative electrode tab (502) are connected to the second side end.
9. The terminal according to claim 8, characterized in that, The first positive electrode tab (401) and the second positive electrode tab (501) are staggered along the second direction (Y), and the first negative electrode tab (402) and the second negative electrode tab (502) are staggered along the second direction (Y). The first direction (X) and the second direction (Y) intersect.
10. The terminal according to claim 9, characterized in that: Also includes: The housing and charging terminal are provided. The housing is provided with a battery slot, the battery slot is provided with the battery cell area, the side of the housing is provided with a charging port, the charging port is provided with the small board area, the charging terminal is provided in the charging port and connected to the small board (3), the housing is provided with a mounting slot, the mounting slot is provided with the main board area.