Battery pack adapter

Abstract

The utility model discloses a battery pack adapter which comprises a shell, a battery pack interface, an electric socket, a control substrate and an indicator lamp, wherein the battery pack interface is arranged on the shell and comprises an electrode holder used for being connected with a battery pack in an inserted mode; the electric socket is arranged in the shell, the shell is provided with an opening right opposite to the electric socket, and the electric socket is used for being connected with a charging head or a connecting end of a patch cord in an inserted mode; the control substrate is arranged in the shell and is electrically connected with the electrode holder and the electric socket; the indicating lamps are connected with the control substrate, the shell comprises a display window adjacent to the indicating lamps, the display window comprises a plurality of sub-windows, each sub-window is in light guide connection with the corresponding indicating lamp, and the display window has various different power display states. And the control substrate is used for controlling the on and off of each indicating lamp according to the charging / discharging power, so that the display window is in a corresponding power display state, and a user can conveniently know the charging or discharging power.

Description

Technical Field

[0001] The utility model belongs to the technical field of power adapters, and particularly relates to a battery pack adapter. Background Art

[0002] Traditional electric tool chargers are dedicated chargers with a fixed charging power and usually only have a charging status indicator. However, a new type of electric tool lithium battery adapter has emerged, allowing users to use charging heads with different powers. Since the protocols supported by charging heads of different brands and models are different and the maximum powers are different, and users usually do not know the actual charging rate of the charging head used to charge the battery pack, sometimes the charging time is too long and users cannot use the battery pack as scheduled, resulting in a poor experience.

[0003] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is the poor user experience in the existing technology.

[0005] To solve the above technical problem, the utility model provides a battery pack adapter, including:

[0006] A housing;

[0007] A battery pack interface, arranged on the housing, including an electrode seat for plugging with the battery pack;

[0008] An electrical socket, arranged inside the housing, the housing is provided with an opening facing the electrical socket, the electrical socket is used for plugging with the connection end of the charging head or the adapter cable, the charging head is suitable for plugging with a power supply to charge the battery pack, and the adapter cable is used for connecting an external electrical device to charge or supply power to the external electrical device by using the battery pack;

[0009] A control board, arranged inside the housing, and electrically connected to both the electrode seat and the electrical socket;

[0010] An indicator light, connected to the control board, the number of the indicator lights is multiple, the housing includes a display window arranged adjacent to the multiple indicator lights, the display window includes multiple sub-windows, each sub-window is optically connected to the corresponding indicator light, the display window has multiple different power display states, and the control board is used to control the lighting and extinguishing of each indicator light according to the charging / discharging power, so that the display window is in the corresponding power display state.

[0011] In one embodiment, the multiple sub-windows are arranged in sequence. The power display states at least include a first power state, a second power state, and a third power state, and the values of the charging / discharging power corresponding to the first power state, the second power state, and the third power state increase in sequence. Starting from the same side of the arrangement of the sub-windows, the number of the sub-windows lit in the display window in the first power state, the second power state, and the third power state increases.

[0012] In one embodiment, in the first power state, the second power state, and the third power state, the lit sub-windows are constantly on.

[0013] In one embodiment, the power display state further includes a full charge reminder state. In the full charge reminder state, the indicator light at the starting position blinks at a first frequency; and / or,

[0014] The display window further has an under-voltage reminder state for indicating the under-voltage of the battery pack. In the under-voltage reminder state, the indicator light at the starting position blinks at the first frequency.

[0015] In one embodiment, the display window further includes a fault display state. In the fault display state, the indicator light at the starting position blinks at a second frequency; wherein, the second frequency is greater than the first frequency.

[0016] In one embodiment, the housing includes an opaque outer shell and a light partition. The light partition is disposed on the inner wall of the outer shell and between two adjacent sub-windows for separating the light-transmitting areas of two adjacent indicator lights.

[0017] In one embodiment, the battery pack adapter further includes a light guide member disposed with light transmission. The light guide member includes a body and through holes provided on the body. The through holes correspond to the light partitions one by one. The body is fixedly connected to the inner surface of the outer shell corresponding to the display window, and the light partition penetrates through the through hole.

[0018] In one embodiment, the light guide member includes light guide columns provided on one side of the body and indicating columns provided on the other side of the body. The light guide columns correspond to the indicator lights one by one. The light guide columns and the through holes are distributed alternately. The indicating columns are provided corresponding to the sub-windows one by one, and the indicating columns are embedded in the sub-windows.

[0019] In one embodiment, one light guide column is in light-transmitting connection with two or more indicating columns.

[0020] In one embodiment, the indicator lights are sequentially disposed on the outer edge of the control substrate, and the indicator lights are arranged along the length direction of the housing.

[0021] The technical solution provided by the present utility model has the following advantages:

[0022] The battery pack adapter provided by the present utility model is provided with an indicator light connected to a control substrate, and a display window including a plurality of sub-windows is arranged at a position of the housing adjacent to the indicator light. Each sub-window is optically connected to a corresponding indicator light. The display window has a variety of different power display states. The control substrate is used to control the lighting and extinguishing of each indicator light according to the charging or discharging power, so that the display window is in a corresponding power display state. The user can timely obtain the charging or discharging power of the battery pack adapter through the display window, so as to determine whether the current charger is matched and have a more accurate expectation for the charging completion time. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model;

[0025] Figure 2 For Figure 1 It is a schematic perspective view of another angle of the provided battery pack adapter (hiding the dust-proof part);

[0026] Figure 3 It is a schematic internal structure view of the battery pack adapter provided by an embodiment of the present utility model;

[0027] Figure 4 For Figure 3 It is an enlarged schematic structure view of area A of the shown battery pack adapter;

[0028] Figure 5 It is a schematic view of the display states of the display window of the battery pack adapter provided by an embodiment of the present utility model in the first, second, and third power states respectively;

[0029] Figure 6 It is a schematic partial structure view of the housing of the battery pack adapter provided by an embodiment of the present utility model;

[0030] Figure 7 It is a schematic perspective view of the light guide member provided by an embodiment of the present utility model;

[0031] Figure 8 For Figure 7Schematic perspective view of another perspective of the light guide member shown. Detailed implementation manners

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0034] In the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "top", "bottom" are usually relative to the direction shown in the drawings, or relative to the component itself in the vertical, perpendicular or gravitational direction; similarly, for the sake of easy understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0035] This embodiment provides a battery pack adapter. Figure 1 Schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model, Figure 2 is Figure 1 Schematic perspective view of another perspective of the provided battery pack adapter (with the dust-proof member hidden), Figure 3 Schematic internal structure view of the battery pack adapter provided by an embodiment of the present utility model, Figure 4 is Figure 3 Enlarged structure view of area A of the shown battery pack adapter. Please refer to Figure 1 、 Figure 2 and Figure 3 , the battery pack adapter 100 includes a housing 10, a battery pack interface 20, an electrical socket 30, a control substrate 40, and an indicator light 60.

[0036] The housing 10 includes an opaque outer shell 11, and an accommodation space is formed inside. The electrical socket 30, the control substrate 40, and the indicator light 60 are all disposed inside the outer shell 11. The battery pack interface 20 is disposed on the outer side surface of the outer shell 11 for attaching a battery pack (not shown). For the purpose of easy explanation, the side of the housing 10 where the battery pack interface 20 is disposed is defined as the bottom of the housing 10, and the other side opposite to the battery pack interface 20 is defined as the top of the housing 10. When the battery pack adapter is plugged with a battery pack, it is usually placed on a support surface with the battery pack as the support, the battery pack contacts the support surface, and the battery pack adapter is located above the battery pack.

[0037] Specifically, the battery pack interface 20 includes an electrode seat 21 and an opening 22 disposed opposite to the electrode seat 21. The opening 22 is an open port formed on one side of the housing 10, and the opening 22 is used for the battery pack to pass through and plug into the electrode seat 21. In a specific implementation, the battery pack plugs into the electrode seat 21 along the direction from the opening 22 to the electrode seat 21.

[0038] The battery pack interface 20 attaches the battery pack in a sliding manner. Specifically, the battery pack interface 20 includes two parallel slide rails 23 disposed on the bottom side of the housing 10 and extending along the length direction of the housing 10. Correspondingly, two matching chutes are provided on the battery pack, and the length of the chutes is substantially the same as that of the slide rails 23. Align the two slide rails 23 with the chutes on the battery pack and apply a thrust along the direction of the slide rails, so that the battery pack can be inserted into the battery pack interface along the slide rails and dock with the electrode seat 22, realizing the sliding plug-in connection between the battery pack and the adapter.

[0039] The electrical socket 30 is used to plug into the connection end of a charging head or a conversion cable. The charging head is adapted to plug into a power source to charge the battery pack, and the conversion cable is used to connect an external electrical device to charge or supply power to the external electrical device using the battery pack. In other words, when the electrical socket 30 is connected to the power source through the charging head, the battery pack plugged into the battery pack interface can be charged using the power source. When the electrical socket 30 is connected to the electrical device through the conversion cable, the electrical energy of the battery pack can be used to charge or supply power to the electrical device. Specifically, the electrical socket 30 is provided as a component on the control substrate 40, and the housing 10 is provided with an opening 14 opposite to the electrical socket 30, and the charging head or the conversion cable is plugged into the electrical socket 30 through the opening 14.

[0040] The control substrate 40 is provided with components. The control substrate 40 and the components provided thereon can be collectively referred to as the control board, which is used for charge / discharge control of the battery pack adapter. The control substrate 40 is electrically connected to both the electrode seat 21 and the electrical socket 30. The control substrate 40 is electrically connected to the battery pack through the electrode seat 21, and can be electrically connected to the power source or the electrical device through the electrical socket 30, thereby forming a charge / discharge circuit.

[0041] The indicator light 60, as a component, is used to indicate the charge / discharge state. Please refer to Figure 1 and Figure 4, there are multiple indicator lights 60, and the multiple indicator lights 60 are all connected to the control substrate 40 and are controlled by the control substrate 40 to be turned on and off. The housing 10 includes a display window disposed adjacent to the multiple indicator lights 60. The display window includes multiple sub-windows 13, and each sub-window 13 is optically connected to the corresponding indicator light 60. When the indicator light 60 is powered on and lit, the correspondingly optically connected sub-window 13 is lit. The display window has different power display states, and the control substrate 40 can control the turning on and off of each indicator light 60 according to the charging / discharging power, so that the display window is in the corresponding power display state. That is to say, the control substrate 40 controls the power-on situation of each indicator light 60 according to the charging / discharging power. Corresponding to the power-on situation of each indicator light 60, the display window has a variety of different power display states to display the current charging or discharging power of the battery pack adapter to the user. The user can know the current charging or discharging power by observing the display state of the display window 13.

[0042] For the battery pack adapter provided in this embodiment, by setting indicator lights connected to the control substrate, a display window including multiple sub-windows is provided at a position adjacent to the indicator lights on the housing. Each sub-window is optically connected to the corresponding indicator light. The display window has a variety of different power display states. The control substrate is used to control the turning on and off of each indicator light according to the charging or discharging power, so that the display window is in the corresponding power display state. The user can obtain the charging or discharging power of the battery pack adapter in a timely manner through the display window, so as to determine whether the current charger is matched and have a more accurate expectation for the charging completion time.

[0043] Specifically, the multiple indicator lights 60 are all arranged on the control substrate 40. More specifically, the indicator lights are sequentially arranged on the outer edge of the control substrate 40, and the indicator lights 60 are arranged along the length direction of the housing 10. Correspondingly, the display window 13 is arranged on one side in the width direction of the housing 10 and is arranged along the length direction of the housing 10. With such a setting, it is convenient for the user to observe the display window and more conveniently know the charging or discharging power. Of course, the indicator lights 60 can also be connected to the control substrate 40 through wires, and the connection method of the indicator lights 60 to the substrate is not limited herein.

[0044] It should be noted that the housing 10 has a length direction, a width direction, and a height direction, and the dimension in the length direction is greater than the dimensions in the width direction and the height direction. Arranging the indicator lights 60 along the length direction of the housing 10 means that the indicator lights 60 are arranged along the side with a larger length. In the above embodiment, the length direction of the housing 10 is specifically the direction parallel to the slide rail 23. The housing 10 has a length direction, but it cannot be understood that the housing is in the shape of a cuboid. The housing 10 can also be in other shapes. The shape of the housing is not limited in this embodiment.

[0045] In a specific embodiment, multiple sub-windows 13 are arranged in sequence. The power display state includes display states of various different power ranges, and each power display state correspondingly represents that the charging power or discharging power of the current battery pack is within a specific range. There is a corresponding relationship from small to large between the power display state and the power range. Starting from the same side, the number of lit sub-windows 13 gradually increases. Specifically, please refer to Figure 5 As shown, the power display state at least includes a first power state, a second power state, and a third power state, and the values of the charging or discharging power corresponding to the first power state, the second power state, and the third power state increase in sequence. Starting from the same side where the sub-windows 13 are arranged, the number of lit sub-windows 13 in the first power state, the second power state, and the third power state increases. Preferably, the power display state may further include a fourth power state. Exemplarily, please combine Figure 4 As shown, in the first power state, starting from Figure 4 the left side, the first display lamp 60 is powered on and lit, and the remaining display lamps are powered off and extinguished. In the second power state, starting from the left side, the first and second display lamps are powered on and lit, and the remaining display lamps are powered off and extinguished. In the third power state, starting from the left side, the first, second, and third display lamps 60 are powered on and lit, and the remaining display lamps are powered off and extinguished. In the fourth power state, all 4 display lamps 60 are lit, and all sub-windows are in a light-transmitting display state. Of course, the display lamps can also start from the right side and be lit in sequence according to the value of the charging or discharging power. In this embodiment, the user can intuitively know the current charging or discharging power range through the number of lit display lamps.

[0046] Preferably, in the first power state, the second power state, and the third power state, the lit sub-windows 13 are constantly lit. By the way of constant lighting to display the corresponding power state, the display of the power magnitude is more intuitive.

[0047] In a specific implementation scenario, the battery pack adapter is plugged into a power source through the electrical socket 30 to charge the battery pack plugged into the battery pack interface 20. In order to remind the user that the battery pack is fully charged so that the user can timely remove the battery pack. In one embodiment, the power display state further includes a full charge reminder state. In the full charge reminder state, the indicator lamp at the starting position flashes at a first frequency. When the user observes that the sub-window 30 corresponding to the first display lamp 60 starting from the starting side flashes at the first frequency, it can be known that the battery pack is fully charged and can be taken at any time. Preferably, in the full charge reminder state, the indicator lamp at the starting position flashes at the first frequency for a period of time and then can be extinguished to save power. After charging for a period of time, when the user observes that the sub-window 30 corresponding to the first display lamp 60 starting from the starting side is extinguished, it can also be known that the battery pack is fully charged.

[0048] When the battery pack is plugged into the battery pack interface 20, but the electrical socket 30 has not been powered on yet, the battery pack has not started charging at this time. In order to remind the user of the initial voltage of the battery pack before charging starts, in a specific embodiment, the display window also has an undervoltage reminder state for indicating that the battery pack is undervoltage. In the undervoltage reminder state, the indicator light 60 at the starting position flashes at a first frequency. That is to say, when charging has not started yet, the indicator light at the starting position flashing at the first frequency indicates that the current battery pack is undervoltage and urgently needs to be charged. If the indicator light does not flash at the first frequency before charging starts, it means that the initial voltage of the current battery pack is relatively high. The battery pack adapter provided in this embodiment has an undervoltage reminder function, and the undervoltage situation of the battery pack can be obtained through this undervoltage reminder function, so as to charge in time and reduce the damage caused by over-discharging of the battery pack. Preferably, in the undervoltage reminder state, the indicator light at the starting position can be turned off after flashing at the first frequency for a period of time to save power.

[0049] Of course, in other embodiments, the display window can simultaneously have an undervoltage reminder state for indicating that the battery pack is undervoltage and a full charge reminder state. In the undervoltage reminder state and the full charge reminder state, it is the first display light 60 at the starting position that flashes at a first frequency. If the battery pack adapter is plugged into a power source and charged for a period of time, the first display light flashing at the first frequency indicates that the battery pack is fully charged. If the battery pack adapter is not plugged into a power source or not started charging, the first display light flashing at the first frequency indicates that the current battery pack is undervoltage.

[0050] Furthermore, the display window also includes a fault display state for indicating that the current battery pack adapter has a fault. In the fault display state, the indicator light 60 at the starting position flashes at a second frequency. Among them, the second frequency is greater than the first frequency. The fault display state can timely remind the situation that the battery pack adapter cannot work properly, and timely remind the user to check and repair, reducing the impact on normal use.

[0051] There is a corresponding relationship between the display light and the sub-window to which it is optically connected. In order to prevent the current display light from irradiating onto other non-corresponding adjacent sub-windows and affecting the display state of the non-corresponding sub-windows. In a specific embodiment, please refer to Figure 3 and Figure 4, the housing 10 further includes a light partition 12. The light partition 12 is disposed on the inner wall of the outer housing 11, between two adjacent sub-windows 13, and is used to separate the light-transmitting areas of two adjacent indicating lights 60. Specifically, the light partition 12 extends towards the side of the display lamp 60, and a light partition 12 is separated between two adjacent display lamps 60 to block the light of this indicating lamp 60 from irradiating the light-transmitting area of other display lamps 60. Exemplarily, the number of display lamps 60 is 4, arranged in sequence, and a light partition 12 is provided between two adjacent indicating lights 60, and a total of 3 light partitions are alternately arranged among the 4 display lamps. A light partition may or may not be provided on the outer sides of the display lamps 60 on both sides, and this is not limited herein.

[0052] Specifically, please refer to Figure 4 、 Figure 6 and Figure 7 , the battery pack adapter further includes a light guide member 50 provided with light transmission, which is used to guide the light of the indicating lamp 60 to irradiate to the corresponding sub-window. The light guide member 50 includes a body 51 and through holes 510 provided on the body 51. The through holes 510 correspond to the light partitions 12 one by one. The body 51 is fixedly connected to the inner surface of the outer housing 11 corresponding to the display window, and the light partitions 12 penetrate through the through holes 510 one by one and extend out from the through holes 510. The through relationship in which the light partitions 12 penetrate through the through holes 510 one by one can assist in the positioning of the body 51.

[0053] More specifically, a groove 110 matching the body 51 is provided on the inner wall of the outer housing 11 corresponding to the display window. The body 51 is embedded in the groove 110, and the light partitions 12 respectively penetrate through the through holes 510, realizing the fixation of the light guide member 50 relative to the housing 11. In order to enhance the connection strength, an adhesive may also be provided between the body 51 and the groove 110 for adhesive connection. Of course, in other embodiments, the outer housing 11 may not be provided with a groove, and the body 51 is connected to the outer housing 11 through a fixing structure. Among them, the fixing structure may include a buckle, a screw, or other types of fasteners. The body 51 may also be directly adhered to the inner wall of the outer housing by glue. For the fixing methods of the light guide member and the outer housing, they are not listed one by one herein.

[0054] Please refer to Figure 7 and Figure 8, the light guide member 50 includes a light guide column 52 disposed on one side of the main body 51 and a display light column 53 disposed on the other side of the main body 51. The light guide column 52 and the display light column 53 are respectively located on opposite sides of the main body 51. The light guide column 52 is located on the side of the main body 51 close to the indicator light 60 and corresponds to the indicator light 60 one by one, and is used to receive the light of the corresponding indicator light 60 and conduct the light to the corresponding display light column 53. The light guide columns 52 and the through holes 510 are distributed alternately, the light guide columns 52 are separated by the light partition plates 12, the display light columns 53 are arranged corresponding to the sub-windows 13 one by one, and the display light columns 53 are embedded in the sub-windows 13. When the indicator light 60 is lit, the light irradiates on the corresponding light guide column 52 and is conducted to the corresponding display light column 53 through the light guide column 52, thereby lighting the corresponding sub-window 13. In this way, the interference between adjacent sub-windows is small and the display effect of the display window is good.

[0055] Specifically in this embodiment, one light guide column 52 is in light-transmitting connection with two display light columns 53. When one indicator light 60 is lit, the corresponding two sub-windows 13 are lit. Of course, each light guide column 52 can also be in light-transmitting connection with more display light columns 52. For example, each light guide column 52 is in light guiding connection with 3 display light columns. The number of display light columns in light guiding connection with the light guide column is not limited here.

[0056] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or variations without making creative efforts, and all of them should fall within the protection scope of the present invention.

Claims

1. A battery pack adapter, characterized in that: include: case; A battery pack interface, disposed on the housing, comprising an electrode seat for plugging with the battery pack; An electrical socket is disposed in the housing, the housing is provided with an opening facing the electrical socket, the electrical socket is used to be plugged into a connecting end of a charging head or an adapter cable, the charging head is suitable for being plugged into a power source to charge the battery pack, and the adapter cable is used to connect an external electrical device to charge or supply power to the external electrical device using the battery pack; A control substrate is disposed in the housing and is electrically connected to the electrode holder and the electrical socket; An indicator light is connected to the control substrate, the number of the indicator lights is multiple, the shell includes a display window arranged adjacent to the multiple indicator lights, the display window includes multiple sub-windows, each of the sub-windows is light-guidingly connected to the corresponding indicator light, the display window has multiple different power display states, and the control substrate is used to control the lighting and extinguishing of each indicator light according to the charging / discharging power so that the display window is in the corresponding power display state.

2. The battery pack adapter according to claim 1, wherein: The multiple sub-windows are arranged in sequence, and the power display state includes at least a first power state, a second power state and a third power state. The values ​​of the charging / discharging power corresponding to the first power state, the second power state and the third power state increase in sequence. Starting from the same side where the sub-windows are arranged, the number of the sub-windows of the display window that are lit in the first power state, the second power state, and the third power state increases.

3. The battery pack adapter according to claim 2, wherein: In the first power state, the second power state and the third power state, the illuminated sub-window is always on.

4. The battery pack adapter according to claim 2, wherein: The power display state also includes a full-power reminder state, in which the indicator light at the starting position flashes at a first frequency; and / or, The display window also has an undervoltage reminder state for indicating that the battery pack is undervoltage. In the undervoltage reminder state, the indicator light located at the starting position flashes at a first frequency.

5. The battery pack adapter according to claim 4, wherein: The display window also includes a fault display state, in which the indicator light located at the starting position flashes at a second frequency; wherein the second frequency is greater than the first frequency.

6. The battery pack adapter according to claim 1, wherein: The housing comprises a light-proof outer shell and a light partition. The light partition is arranged on the inner wall of the outer shell and located between two adjacent sub-windows to separate the light-transmitting areas of two adjacent indicator lights.

7. The battery pack adapter according to claim 6, wherein: The battery pack adapter also includes a light-transmitting light guide, which includes a main body and a through hole arranged on the main body, the through hole corresponds to the light baffle one by one, the main body is fixedly connected to the inner surface of the display window corresponding to the outer shell, and the light baffle passes through the through hole.

8. The battery pack adapter according to claim 7, wherein: The light guide member includes a light guide column arranged on one side of the body and a light indicator column arranged on the other side of the body, the light guide column corresponds to the indicator light one-to-one, the light guide column and the through hole are alternately distributed, the light indicator column and the sub-window are arranged one-to-one, and the light indicator column is embedded in the sub-window.

9. The battery pack adapter according to claim 8, wherein: One light-guiding column is light-transmittingly connected to two or more light-indicating columns.

10. The battery pack adapter according to claim 1, wherein: The indicator lights are sequentially arranged at the outer edge of the control substrate, and the indicator lights are arranged along the length direction of the shell.

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