CN219144377U - Battery pack and electric equipment - Google Patents

Abstract

The utility model relates to a battery pack and electric equipment, wherein the battery pack comprises a shell and an electric connecting component, the shell is provided with through holes penetrating through the inner side and the outer side of the shell, the electric connecting component comprises a conducting rod and a first elastic piece, the conducting rod is arranged through the through holes, the conducting rod is provided with a first rod section exposed out of the shell and a second rod section hidden in the shell, the first rod section comprises a first electric connecting surface far away from the second rod section, the first elastic piece is connected with the conducting rod so as to compress and store energy when the first electric connecting surface is in pressure connection, thus when the first electric connecting surface is in contact with an electric terminal on the electric equipment, the first elastic piece can apply force to the conducting rod to enable the first electric connecting surface to be in good contact with the electric terminal, and when the first electric connecting surface is in plane, the first rod section is in butt joint with the electric terminal, the two points of surface contact with the electric terminal are combined, and the battery pack can realize high-current discharge.

Description

Battery pack and electric equipment

Technical Field

The utility model relates to the field of battery replacement, in particular to a battery pack and electric equipment.

Background

The traditional electric equipment is provided with a built-in battery, the battery needs to be charged after no electricity is supplied, the electric equipment is stopped for a long time, the practical time of the electric equipment is less, and the return rate is low. In order to solve the problem, a detachable and replaceable battery pack is arranged on the market, a metal spring plate is arranged on the battery pack, a metal conductor is arranged on electric equipment, after the battery pack is installed, the metal spring plate can be in contact with the end surface of the metal conductor or in line surface contact, and the problems of relatively large internal resistance, serious heating and the like can be caused by the contact mode, so that large-current discharge can not be realized.

Disclosure of Invention

The embodiment of the utility model aims to solve the technical problem that a detachable battery pack cannot realize high-current discharge in the prior art.

In a first aspect, an embodiment of the present utility model provides a battery pack, including: the shell is provided with through holes penetrating through the inner side and the outer side of the shell; a battery mounted in the housing; the electric connection assembly comprises a conducting rod and a first elastic piece, wherein the conducting rod penetrates through the through hole, so that the conducting rod is provided with a first rod section exposed out of the shell, and a second rod section hidden in the shell, the first rod section comprises a first electric connection surface far away from the second rod section, the first electric connection surface is a plane, the second rod section is electrically connected with the battery, and the first elastic piece is connected with the conducting rod so as to compress and store energy when the first electric connection surface is in compression joint.

Further, be equipped with first bellying on the inside wall of shell, first bellying be in the axial of through-hole with the through-hole interval sets up, electric coupling assembling still includes the butt platform, the butt platform with the second pole section meets, and is located first bellying with between the through-hole, the butt platform with second pole section relatively fixed, first elastic component is first spring, first spring one end butt in first bellying, the other end butt in the butt platform.

Further, the first protruding portion is disposed around the second rod section, the first spring is sleeved on the second rod section, and the abutment table is sleeved on the second rod section.

Further, the outer peripheral surface of the second rod section is provided with a limit groove, the electric connection assembly further comprises a clamping block, the clamping block is clamped in the limit groove, the outline of the clamping block is larger than that of the through hole when seen in the axial direction of the through hole, and one side, close to the through hole, of the abutting table abuts against the clamping block.

In a second aspect, an embodiment of the present utility model further provides an electric apparatus, where the electric apparatus includes: a battery pack according to the first aspect; the battery pack is detachably arranged on the equipment body, the equipment body comprises an electric terminal, the electric terminal comprises a second electric connection surface which is abutted to the first electric connection surface of the battery pack, and the second electric connection surface is a plane.

Further, the housing of the battery pack includes a first surface facing the device body, and a second surface adjacent to the first surface, the through hole of the battery pack is provided on the first surface, and the second surface is provided with a second protrusion; the device body includes: the battery pack is detachably arranged on the mounting seat; the sliding buckle is arranged on the position, adjacent to the second protruding part, of the mounting seat in a sliding manner, and can slide on the mounting seat along the protruding direction of the second protruding part and along the direction opposite to the protruding direction; and the two ends of the second spring are respectively abutted with the mounting seat and the sliding buckle, so that energy is stored when the sliding buckle moves along the protruding direction, and the sliding buckle is driven to move along the opposite direction of the protruding direction through energy release, so that the sliding buckle can be buckled on one side, away from the mounting seat, of the second protruding part.

Further, the sliding buckle includes: the sliding base is arranged at a position of the mounting seat adjacent to the second protruding part and can slide on the mounting seat along the protruding direction of the second protruding part and along the opposite direction of the protruding direction; the connecting part is connected with the mounting seat and extends towards one side of the second protruding part away from the mounting seat; the buckling part is connected to one side of the connecting part, which is far away from the sliding base, and extends along the direction opposite to the protruding direction, so that a containing space for containing the second protruding part is formed between the buckling part and the sliding base; the surface of the buckling part facing the shell is an inclined surface, and/or the surface of the second protruding part facing the connecting part is an inclined surface.

Further, a first abutting protrusion is arranged on one surface of the mounting seat facing the shell, a second abutting protrusion is arranged on one surface of the sliding base away from the shell, the second abutting protrusion and the first abutting protrusion are arranged at intervals along the protrusion direction of the second protrusion, and two ends of the second spring are respectively abutted to the first abutting protrusion and the second abutting protrusion.

Further, a hand buckling groove is formed in one surface, far away from the shell, of the sliding base.

Further, one of a limiting protrusion and a limiting recess is arranged on the first surface, the other of the limiting protrusion and the limiting recess is arranged on one surface of the shell, which faces the first surface, and the limiting protrusion is used for being placed in the limiting recess so as to limit the relative movement of the shell and the mounting seat.

Compared with the prior art, the battery pack and the electric equipment provided by the embodiment of the utility model have the beneficial effects that: the embodiment of the utility model provides a battery pack, which comprises: the battery is arranged in the shell, the through holes penetrating through the inner side and the outer side of the battery are formed in the shell, the electric connecting assembly comprises a conducting rod and a first elastic piece, the conducting rod penetrates through the through holes, so that the conducting rod is provided with a first rod section exposed out of the shell, and a second rod section hidden in the shell, the second rod section is electrically connected with the battery, the first rod section comprises a first electric connecting surface far away from the second rod section, specifically, the first elastic piece is connected with the conducting rod, so that compression energy storage is conducted when the first electric connecting surface is in compression connection, and therefore when the first electric connecting surface is in contact with a connecting terminal on an electric device, the first elastic piece can give the conducting rod a force towards the connecting terminal, the first electric connecting surface can be well in contact with the connecting terminal, poor contact due to vibration is avoided, the first electric connecting surface can be in contact when the first rod section is in contact with the connecting terminal, the first electric connecting surface can be in contact with the connecting terminal, and the first electric connecting surface can be combined with the two electric terminals in a large current.

Drawings

The utility model will now be described in further detail with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a housing and a battery according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a housing and electrical connection assembly provided in an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of a portion of the A position of FIG. 3;

fig. 5 is a schematic perspective view of an electrical connection assembly according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a part of a structure of an electric device according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view of a part of the structure of an apparatus body according to an embodiment of the present utility model;

fig. 8 is a sectional view of a part of the structure of an apparatus body provided by an embodiment of the present utility model;

FIG. 9 is an enlarged schematic view of a portion of the B position of FIG. 8;

FIG. 10 is an exploded view of a portion of a powered device according to an embodiment of the present utility model;

fig. 11 is a schematic perspective view of a sliding buckle according to an embodiment of the present utility model;

fig. 12 is a schematic perspective view of a mounting base and an electrical terminal according to an embodiment of the present utility model.

The reference numerals in the drawings are as follows:

100. a battery pack; 110. a housing; 111. a through hole; 112. a first boss; 113. a first surface; 1131. limiting depression; 114. a second surface; 1141. a second protruding portion; 120. a battery; 130. an electrical connection assembly; 131. a conductive rod; 1311. a first pole segment; 13111. a first electrical connection surface; 1312. a second pole segment; 13121. a limit groove; 132. a first elastic member; 133. an abutment; 134. a clamping block;

210. an electrical terminal; 211. a second electrical connection surface; 220. a mounting base; 221. a first abutment projection; 222. a limit protrusion; 230. a sliding buckle; 231. a slide base; 2311. a second abutment projection; 2312. a handle groove; 232. a connection part; 233. a fastening part; 234. an accommodating space; 240. and a second spring.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings.

The present utility model provides a battery pack 100, as shown in fig. 1 to 5, the battery pack 100 includes: housing 110, battery 120, and electrical connection assembly 130. The battery 120 is disposed in the housing 110, the housing 110 is provided with a through hole 111 penetrating through both inner and outer sides thereof, the electrical connection assembly 130 includes a conductive rod 131 and a first elastic member 132, the conductive rod 131 is disposed through the through hole 111, so that the conductive rod 131 has a first rod section 1311 exposed out of the housing 110, and a second rod section 1312 hidden in the housing 110, the first rod section 1311 includes a first electrical connection surface 13111 far away from the second rod section 1312, and the first electrical connection surface 13111 is a plane, the second rod section 1312 is electrically connected with the battery 120, and the first elastic member 132 is connected with the conductive rod 131 to compress energy when the first electrical connection surface 13111 is crimped.

By implementing the first embodiment, when the first electrical connection surface 13111 is crimped, the first elastic member 132 compresses and stores energy, so that when the first electrical connection surface 13111 contacts the electrical terminal 210 of the electrical equipment, the first elastic member 132 gives a force to the conductive rod 131 toward the electrical terminal 210, so that the first electrical connection surface 13111 can well contact the electrical terminal 210, and thus, poor contact between the conductive rod 131 and the electrical terminal 210 due to vibration is avoided. In the second aspect, since the first rod segment 1311 includes the first electrical connection surface 13111 far from the second rod segment 1312, and the first electrical connection surface 13111 is a plane, the first rod segment 1311 can be in surface-to-surface contact with the electrical connection terminal 210 when in abutment, so as to achieve the technical effects of reducing internal resistance and reducing heat productivity.

In combination with the above-mentioned first electrical connection surface 13111 being able to make good contact with the electrical connection terminal 210, and the second aspect mentioned first pole segment 1311 being able to make surface-to-surface contact when in abutment with the electrical connection terminal 210, the battery pack 100 is able to achieve high-current discharge.

Referring to fig. 1 to 5, in a specific embodiment, a first protruding portion 112 is disposed on an inner side wall of the housing 110, the first protruding portion 112 is disposed at an interval from the through hole 111 in an axial direction (X direction in fig. 3) of the through hole 111, the electrical connection assembly 130 further includes an abutment table 133, the abutment table 133 is connected to the second rod section 1312 and is located between the first protruding portion 112 and the through hole 111, the abutment table 133 and the second rod section 1312 are relatively fixed, the first elastic member 132 is a first spring, one end of which abuts against the first protruding portion 112, and the other end of which abuts against the abutment table 133.

By implementing the embodiment, when the first electrical connection surface 13111 is crimped, the conductive rod 131 will retract along the through hole 111, and since the abutment platform 133 is relatively fixed to the second rod section 1312, the abutment platform 133 will move along with the conductive rod 131 to approach the first boss 112, and since the first spring is sandwiched between the first boss 112 and the abutment platform 133, the abutment platform 133 cooperates with the first boss 112 to compress the first spring, so as to store energy in the spring, at this time, the spring will generate stress, and this stress drives the first electrical connection surface 13111 to be well crimped with the electrical connection terminal 210, and even if the first electrical connection surface 13111 is vibrated, it will not cause poor contact with the electrical connection terminal 210.

Referring to fig. 1-5, in a particular embodiment, the first boss 112 is disposed about the second rod segment 1312, the first spring is sleeved on the second rod segment 1312, and the abutment post 133 is sleeved on the second rod segment 1312. Through implementing this embodiment, the second pole section 1312 can be located to first spring cover, and the second pole section 1312 just like this can play spacing effect to first spring to a certain extent, avoids first spring to deviate from the setting position originally under the effect of external force, and then leads to the condition of first spring inefficacy to appear.

Referring to fig. 1-5, in a specific embodiment, a limiting groove 13121 is formed on an outer peripheral surface of the second rod section 1312, the electrical connection assembly 130 further includes a clamping block 134, the clamping block 134 is clamped in the limiting groove 13121, and when viewed from an axial direction of the through hole 111, a contour of the clamping block 134 is larger than a contour of the through hole 111, and a side, close to the through hole 111, of the abutment stand 133 abuts against the clamping block 134.

Specifically, since the limiting groove 13121 is disposed on the outer peripheral surface of the second rod section 1312, and the clamping block 134 is clamped in the limiting groove 13121, the clamping block 134 cannot move along the second rod section 1312 due to the constraint of the groove wall of the limiting groove 13121, so that the clamping block 134 can be kept relatively fixed with the second rod section 1312 when the second rod section 1312 moves along the axial direction of the through hole 111. Since the contour of the block 134 is larger than the contour of the through hole 111 when seen in the axial direction of the through hole 111, the side of the abutment 133 close to the through hole 111 can abut against the block 134, and the abutment 133 can be held relatively fixed to the second pole section 1312 by the restraint of the first spring and the block 134. Only if the abutment 133 and the second rod section 1312 remain relatively fixed, the stress of the first spring can act well on the conductive rod 131, forcing the first electrical connection face 13111 to be well crimped with the electrical connection terminal 210.

Of course, it will be appreciated that alternative means of securing the abutment 133 relative to the second pole segment 1312 are possible, such as by using a strong adhesive to adhere the abutment 133 to the second pole segment 1312.

The utility model also provides an electric device, as shown in fig. 6 and 7, the electric device comprises a battery pack 100 and an equipment body, the battery pack 100 is detachably arranged on the equipment body, the equipment body comprises an electric terminal 210, the electric terminal 210 comprises a second electric connection surface 211 which is abutted against a first electric connection surface 13111 of the battery pack 100, and the second electric connection surface 211 is a plane.

By implementing the present embodiment, when the first electrical connection surface 13111 is in pressure contact with the second electrical connection surface 211, the first elastic member 132 compresses and stores energy, so that the first elastic member 132 gives the conductive rod 131 a force toward the electrical connection terminal 210, so that the first electrical connection surface 13111 can be well contacted with the second electrical connection surface 211, and poor contact due to vibration is not generated. In the second aspect, since the first rod segment 1311 includes the first electrical connection surface 13111 far from the second rod segment 1312, and the first electrical connection surface 13111 and the second electrical connection surface 211 are both planar, the first rod segment 1311 is in surface-to-surface contact when abutting against the second electrical connection surface 211, thereby achieving the technical effects of reducing internal resistance and reducing heat generation.

The combination of the first electrical connection surface 13111 mentioned in the first aspect being in good contact with the second electrical connection surface 211 and the first electrical connection surface 13111 and the second electrical connection surface 211 mentioned in the second aspect being in surface-to-surface contact when abutted allows the battery pack 100 to achieve high-current discharge.

It should be noted that, the electric equipment referred to in this embodiment may be electric equipment such as a warehouse AGV, a ladder booster, etc., which is not limited herein, and may be adaptively set by those skilled in the art.

Referring to fig. 6 to 12, in an embodiment, the battery pack 100 is detachably connected to the apparatus body by a snap-fit connection. In the present embodiment, the housing 110 of the battery pack 100 includes a first surface 113 facing the apparatus body, and a second surface 114 adjacent to the first surface 113, the through hole 111 of the battery pack 100 is disposed on the first surface 113, and the second surface 114 is provided with a second protruding portion 1141. The apparatus body includes a mounting seat 220, a sliding buckle 230 and a second spring 240, where the battery pack 100 is detachably mounted on the mounting seat 220, and the sliding buckle 230 is slidably mounted on a position of the mounting seat 220 adjacent to the second protruding portion 1141 and can slide on the mounting seat 220 along a protruding direction (Y direction in fig. 1) of the second protruding portion 1141 and along a direction opposite to the protruding direction (Z direction in fig. 10). The two ends of the second spring 240 are respectively abutted against the mounting seat 220 and the sliding buckle 230, so that energy is stored when the sliding buckle 230 moves along the protruding direction, and the sliding buckle 230 is driven to move along the opposite direction of the protruding direction by releasing energy, so that the sliding buckle 230 can be buckled on one side, away from the mounting seat 220, of the second protruding portion 1141, and further detachable connection of the battery pack 100 and the equipment body is realized.

Alternatively, the battery pack 100 may be detachably connected to the apparatus body by a screw connection and a magnetic connection.

Referring to fig. 1-12, in a particular embodiment, the slide fastener 230 includes: a slide base 231, a connecting portion 232, and a fastening portion 233. The sliding base 231 is mounted on the mounting base 220 adjacent to the second protruding portion 1141, and can slide on the mounting base 220 along the protruding direction of the second protruding portion 1141 and along the opposite direction of the protruding direction. The connecting portion 232 is connected to the mounting base 220 and extends towards a side of the second protruding portion 1141 away from the mounting base 220, the fastening portion 233 is connected to a side of the connecting portion 232 away from the sliding base 231 and extends along a direction opposite to the protruding direction, so that an accommodating space 234 is formed between the fastening portion 233 and the sliding base 231, the accommodating space 234 is used for accommodating the second protruding portion 1141, and only the second protruding portion 1141 is accommodated in the accommodating space 234, the fastening portion 233 can be fastened to the side of the second protruding portion 1141 away from the mounting base 220.

Specifically, the surface of the fastening portion 233 facing the housing 110 is an inclined surface, and/or the surface of the second protruding portion 1141 facing the connecting portion 232 is an inclined surface, so that when the battery pack 100 is mounted, the sliding buckle 230 does not need to be pulled away manually, as long as the battery pack 100 continues to be lowered when the sliding buckle 230 and the second protruding portion 1141 abut against each other, the sliding buckle 230 is automatically forced to move towards the protruding direction of the second protruding portion 1141, when the second protruding portion 1141 continuously presses down to be aligned with the accommodating space 234, the second spring 240 releases energy to drive the sliding buckle 230 to move in the opposite direction of the protruding direction of the second protruding portion 1141, so that the fastening portion 233 is fastened to one side of the second protruding portion 1141 away from the mounting seat 220, and the second protruding portion 1141 is also accommodated in the accommodating space 234. Referring to fig. 10, the battery pack 100 in fig. 10 is moved along the direction M in fig. 10 until the fastening portion 233 abuts against the second protruding portion 1141, at this time, as long as the battery pack 100 is continuously pressed down along the direction M, the sliding buckle 230 is automatically forced to move toward the protruding direction of the second protruding portion 1141, and when the second protruding portion 1141 is continuously pressed down to be aligned with the accommodating space 234, the sliding buckle 230 is moved in the opposite direction, as shown in fig. 6.

Referring to fig. 1 to 12, in a specific embodiment, a first abutment protrusion 221 is disposed on a surface of the mounting seat 220 facing the housing 110, a second abutment protrusion 2311 is disposed on a surface of the sliding base 231 facing away from the housing 110, the second abutment protrusion 2311 and the first abutment protrusion 221 are disposed at intervals along a protrusion direction of the second protrusion 1141, and two ends of the second spring 240 are respectively abutted against the first abutment protrusion 221 and the second abutment protrusion 2311.

Specifically, since the second abutment protrusion 2311 and the first abutment protrusion 221 are spaced apart in the protrusion direction of the second protrusion 1141, the second abutment protrusion 2311 moves in a direction approaching the first abutment protrusion 221 when the slide buckle 230 moves in the protrusion direction, so that the second spring 240 disposed between the second abutment protrusion 2311 and the first abutment protrusion 221 is compressed.

When the battery pack 100 is detached from the apparatus body, the sliding buckle 230 needs to be pulled manually, and in order to facilitate pulling the sliding buckle 230, a handle groove 2312 is provided on a surface of the sliding base 231 away from the housing 110 in this embodiment.

In order to avoid displacement of the battery pack 100, in a specific embodiment, one of the limiting protrusion 222 and the limiting recess 1131 is disposed on the first surface 113, and the other of the limiting protrusion 222 and the limiting recess 1131 is disposed on the surface of the mounting base 220 facing the first surface 113, and the limiting protrusion 222 is configured to be placed in the limiting recess 1131 to limit the relative movement between the housing 110 and the mounting base 220.

It should be understood that the foregoing embodiments are merely illustrative of the technical solutions of the present utility model, and not limiting thereof, and that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art; all such modifications and substitutions are intended to be included within the scope of this disclosure as defined in the following claims.

Claims (10)

1. A battery pack, comprising:

the shell is provided with through holes penetrating through the inner side and the outer side of the shell;

a battery mounted in the housing;

the electric connection assembly comprises a conducting rod and a first elastic piece, wherein the conducting rod penetrates through the through hole, so that the conducting rod is provided with a first rod section exposed out of the shell, and a second rod section hidden in the shell, the first rod section comprises a first electric connection surface far away from the second rod section, the first electric connection surface is a plane, the second rod section is electrically connected with the battery, and the first elastic piece is connected with the conducting rod so as to compress and store energy when the first electric connection surface is in compression joint.

2. The battery pack according to claim 1, wherein a first protruding portion is provided on an inner side wall of the housing, the first protruding portion is disposed at an interval from the through hole in an axial direction of the through hole, the electrical connection assembly further comprises an abutment table, the abutment table is connected with the second rod section and is located between the first protruding portion and the through hole, the abutment table is relatively fixed with the second rod section, the first elastic member is a first spring, one end of the first spring is abutted to the first protruding portion, and the other end of the first spring is abutted to the abutment table.

3. The battery pack of claim 2, wherein the first boss is disposed about the second pole segment, the first spring is sleeved on the second pole segment, and the abutment is sleeved on the second pole segment.

4. A battery pack according to claim 3, wherein the second pole section has a limit groove on its outer peripheral surface, the electrical connection assembly further comprises a clamping block, the clamping block is clamped in the limit groove, the profile of the clamping block is larger than that of the through hole when seen in the axial direction of the through hole, and one side of the abutment table, which is close to the through hole, abuts against the clamping block.

5. An electrical device, the electrical device comprising:

a battery pack according to any one of claims 1 to 4;

the battery pack is detachably arranged on the equipment body, the equipment body comprises an electric terminal, the electric terminal comprises a second electric connection surface which is abutted to the first electric connection surface of the battery pack, and the second electric connection surface is a plane.

6. The powered device of claim 5, wherein the housing of the battery pack includes a first surface facing the device body and a second surface adjacent to the first surface, the through hole of the battery pack being disposed in the first surface, the second surface having a second protrusion disposed thereon; the device body includes:

the battery pack is detachably arranged on the mounting seat;

the sliding buckle is arranged on the position, adjacent to the second protruding part, of the mounting seat in a sliding manner, and can slide on the mounting seat along the protruding direction of the second protruding part and along the direction opposite to the protruding direction;

and the two ends of the second spring are respectively abutted with the mounting seat and the sliding buckle, so that energy is stored when the sliding buckle moves along the protruding direction, and the sliding buckle is driven to move along the opposite direction of the protruding direction through energy release, so that the sliding buckle can be buckled on one side, away from the mounting seat, of the second protruding part.

7. The powered device of claim 6, wherein the sliding clasp comprises:

the sliding base is arranged at a position of the mounting seat adjacent to the second protruding part and can slide on the mounting seat along the protruding direction of the second protruding part and along the opposite direction of the protruding direction;

the connecting part is connected with the mounting seat and extends towards one side of the second protruding part away from the mounting seat;

the buckling part is connected to one side of the connecting part, which is far away from the sliding base, and extends along the direction opposite to the protruding direction, so that a containing space for containing the second protruding part is formed between the buckling part and the sliding base;

the surface of the buckling part facing the shell is an inclined surface, and/or the surface of the second protruding part facing the connecting part is an inclined surface.

8. The electric device according to claim 7, wherein a first abutting protrusion is disposed on a surface of the mounting seat facing the housing, a second abutting protrusion is disposed on a surface of the sliding base away from the housing, the second abutting protrusion and the first abutting protrusion are disposed at intervals along a protrusion direction of the second protrusion, and two ends of the second spring are respectively abutted to the first abutting protrusion and the second abutting protrusion.

9. The powered device of claim 7, wherein the sliding base has a catch slot on a side thereof remote from the housing.

10. The powered device of any of claims 7-9, wherein one of a limit protrusion and a limit recess is disposed on the first surface, and one of the limit protrusion and the limit recess is disposed on a surface of the housing facing the first surface, and the limit protrusion is configured to be placed in the limit recess to limit relative movement between the housing and the mounting base.

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