Battery assembly and medical equipment

Abstract

The utility model provides a battery assembly and medical equipment, the battery assembly is used for the medical equipment, and the medical equipment comprises an accommodating groove matched with the battery assembly in appearance and a locking groove communicated with the accommodating groove. The battery assembly comprises a mounting seat, a buckle and an unlocking key, the buckle and the unlocking key are arranged on the mounting seat, the buckle is movably connected with the unlocking key, and a rebounding assembly is further arranged in the mounting seat and used for enabling the buckle to restore to the initial position after position change. The buckle is used for entering and exiting the locking groove under the driving of the unlocking key; the moving direction of the unlocking key is parallel to the direction of the battery assembly entering and exiting the containing groove, and after a user operates the unlocking key to enable the buckle to retreat from the locking groove, the whole battery assembly leaves the containing groove under the inertia effect. The battery assembly is simple in overall structure, the battery assembly and the medical equipment are connected and fixed through the buckle structure capable of being unlocked, and the battery assembly is easy to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a battery assembly and medical equipment. Background Art

[0002] Batteries are often used in medical equipment (for example, cardiopulmonary resuscitation machines). In related technologies, the battery components of the equipment are generally fixed by means of covers and slots that snap together. The structure is complex and the disassembly and assembly operations are cumbersome, which affects the time to start the equipment and the efficiency of rescuing patients, making it difficult to meet user needs. Utility Model Content

[0003] The technical purpose of the utility model is to provide a battery assembly and medical equipment, aiming to solve the problems of inconvenient disassembly and assembly and complex structure of the battery assembly in the related art.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: on the one hand, a battery assembly is provided for medical equipment, the medical equipment includes a receiving groove adapted to the shape of the battery assembly and a locking groove connected to the receiving groove; the battery assembly includes: a mounting seat, a buckle and an unlocking key respectively arranged on the mounting seat, the buckle and the unlocking key are movably connected, and a rebound assembly is also arranged in the mounting seat, the rebound assembly is used to restore the buckle to the initial position after the position is changed; the buckle is used to enter and exit the locking groove under the drive of the unlocking key; the moving direction of the unlocking key is parallel to the direction of the battery assembly entering and exiting the receiving groove, after the user operates the unlocking key to make the buckle withdraw from the locking groove, the battery assembly as a whole leaves the receiving groove under the action of inertia.

[0005] Furthermore, the battery assembly also includes a rotating shaft; a guide hole is opened at one end of the buckle, and the unlocking key is opened at a mounting hole corresponding to the guide hole, or a mounting hole is opened at one end of the buckle, and the unlocking key is opened at a guide hole corresponding to the mounting hole; the rotating shaft passes through the guide hole and the mounting hole to connect the buckle and the unlocking key as a whole; in the pressed state, the movement of the unlocking key drives the rotating shaft and the buckle to move, and the rotating shaft generates relative movement with the buckle under the guiding action of the guide hole, so that the buckle is away from the locking groove.

[0006] Furthermore, the battery assembly also includes an assembly body connected to the mounting seat, the assembly body and the mounting seat enclose an assembly cavity, the rotating shaft and the rebound assembly are both located in the assembly cavity, and the mounting seat is also respectively provided with a first assembly port for a movable assembly buckle and a second assembly port for a movable assembly unlocking key, and the first assembly port and the second assembly port are located on different sides.

[0007] Furthermore, the rebound component includes a first elastic member connected between the assembly body and the unlocking key, and the elastic expansion and contraction direction of the first elastic member is perpendicular to the movable direction of the buckle entering and exiting the first assembly opening.

[0008] Furthermore, a fixing portion is provided on the mounting seat, and the rebound assembly also includes a second elastic member connected between the buckle and the fixing portion, and the elastic expansion and contraction direction of the first elastic member is perpendicular to the elastic expansion and contraction direction of the second elastic member; when the second elastic member is in a natural state, the end of the buckle away from the fixing portion extends outside the mounting seat.

[0009] Furthermore, the unlocking key is also provided with a first guide rail, and the assembly cavity is provided with a first slide groove cooperating with the first guide rail, and the direction of the first slide groove is parallel to the elastic expansion and contraction direction of the first elastic member.

[0010] Further, a first guiding inclined surface is provided in the guiding hole; and / or the assembling body is provided with a second guiding rail for cooperating with the wall surface of the receiving groove.

[0011] On the other hand, a medical device is provided, comprising a host and a battery assembly as described in the first aspect above, wherein the host is provided with a receiving groove adapted to the shape of the battery assembly and a locking groove connected to the receiving groove.

[0012] Furthermore, a clearance opening connected to the receiving groove is formed on the outer side of the main unit, and the clearance opening is used to provide an operating space for pressing the unlocking key.

[0013] Furthermore, a limiting portion is provided on a side of the receiving groove away from the locking groove, and when the buckle is inserted into the locking groove, a side of the battery assembly away from the buckle abuts against the limiting portion.

[0014] Compared with the prior art, the battery assembly and medical device in the utility model have the following beneficial effects: the battery assembly is provided with a snap that can be resilient; the shape of the battery assembly is adapted to the shape of the receiving slot, and when the battery assembly needs to be installed, the battery assembly can be directly placed in the corresponding receiving slot and the positions of the two can be aligned. When the positions are aligned, the groove wall of the receiving slot can be abutted and matched with the outer wall of the battery assembly, and the snap will enter the locking groove and lock and fix with the medical device under the rebound action of the rebound assembly, so that the battery assembly can be firmly fixed on the medical device. The moving direction of the unlocking key is parallel to the direction of the battery assembly entering and exiting the receiving slot; when the battery assembly needs to be removed, only the unlocking key needs to be pressed to make the snap exit the locking groove, and then the battery assembly can be taken out of the receiving slot. In this way, one action can complete the two steps of unlocking and taking out, and the operation is very convenient. It can be seen that the battery assembly and medical device provided by the present application are not only simple in structure but also convenient for disassembly and assembly of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the battery assembly in the embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the assembly of a battery assembly and a medical device in an embodiment of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the battery assembly in the embodiment of the present utility model;

[0018] Figure 4 It is an overall structural schematic diagram of the buckle in the embodiment of the present utility model;

[0019] Figure 5 It is an overall structural schematic diagram of the unlocking key in the embodiment of the present utility model;

[0020] Figure 6 It is an overall structural schematic diagram of the mounting seat in the embodiment of the present utility model;

[0021] Figure 7 It is a partial structural schematic diagram of the assembly main body in the embodiment of the present utility model;

[0022] Figure 8 It is an overall structural schematic diagram of the second housing in the embodiment of the present utility model;

[0023] Figure 9 It is a partial structural schematic diagram of the medical device in the embodiment of the present utility model.

[0024] In the drawings, each reference numeral represents: 1, mounting seat; 11, fixing part; 12, first chute; 2, buckle; 21, guiding hole; 211, first guiding inclined surface; 22, fixing block; 3, unlocking key; 31, first guide rail; 32, mounting hole; 4, rotating shaft; 5, first elastic member; 6, second elastic member; 7, assembly main body; 71, first housing; 711, second guide rail; 72, second housing; 8, host; 81, receiving groove; 82, locking groove; 83, relief opening; 84, limiting part. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0028] Embodiment:

[0029] As Figures 1-9 shown, the battery assembly in this embodiment is used for a medical device. The medical device can be a cardiopulmonary resuscitator. The medical device includes a receiving groove 81 adapted to the outer shape of the battery assembly and a locking groove 82 communicating with the receiving groove 81. Among them, the battery assembly includes: a mounting seat 1, a buckle 2 and an unlocking key 3 respectively arranged on the mounting seat 1. The buckle 2 is movably connected to the unlocking key 3, and a return spring assembly is further arranged in the mounting seat 1. The return spring assembly is used to make the buckle 2 return to the initial position after the position changes; the buckle 2 is used to enter and exit the locking groove 82 under the drive of the unlocking key 3; the moving direction of the unlocking key 3 is parallel to the direction in which the battery assembly enters and exits the receiving groove 81. After the user operates the unlocking key 3 to make the buckle 2 withdraw from the locking groove 82, the whole battery assembly leaves the receiving groove 81 under the action of inertia.

[0030] Specifically, the battery assembly is provided with a movable rebound buckle 2 and an unlocking key 3, and the buckle 2 and the unlocking key 3 can be relatively movable; the shape of the battery assembly is adapted to the shape of the receiving groove 81. When the battery assembly needs to be installed, the battery assembly is directly placed in the corresponding receiving groove 81 and the positions of the two are aligned. When the positions are aligned, the groove wall of the receiving groove 81 can abut and cooperate with the outer wall of the battery assembly, and the buckle 2 will enter the locking groove 82 under the rebound action of the rebound assembly and lock and fix with the medical device, so that the battery assembly can be firmly fixed on the medical device. When the battery assembly needs to be removed, it is only necessary to press the unlocking button 3 to make the buckle 2 withdraw from the locking groove 82. After the buckle 2 withdraws from the locking groove 82, the limiting cooperation between the receiving groove 81 and the buckle 2 is lost, and the moving direction of the unlocking button 3 is parallel to the direction in which the battery assembly enters and exits the receiving groove 81, so the battery assembly can be taken out of the receiving groove 81 immediately afterwards. In this way, one action can complete the two steps of unlocking and removing, and the operation is very convenient; after releasing the unlocking button 3, the buckle 2 and the unlocking button 3 can automatically restore to their initial states respectively under the rebound action of the rebound component, so that it is convenient to install the battery assembly again.

[0031] In some specific embodiments, during the assembly operation, the operating direction of the battery assembly can be perpendicular to the telescopic direction of the buckle 2. When the rebound component is in the natural state, the end of the buckle 2 away from the unlocking key 3 is located outside the mounting seat 1. In the process of loading the battery assembly into the receiving groove 81, the buckle 2 can be retracted into the mounting seat 1 under the action of external force (the abutment and blocking of the side wall of the receiving groove 81), so that the electronic component can move smoothly along the receiving groove 81 until the position alignment is achieved; after the position alignment, the buckle 2 is directly opposite to the locking groove 82, at this time, the outer end face of the buckle 2 is not blocked, and the rebound component provides a rebound force to the buckle 2, so that the outer end of the buckle 2 can automatically enter the locking groove 82, thereby achieving locking and fixing. It can be understood that in this example, the unlocking key 3 can be set on the bottom side of the battery assembly, and the buckle 2 can be set with one or more. When multiple buckles 2 are set, the multiple buckles 2 can also be located on different sides of the battery assembly. Of course, in some other embodiments, the unlocking key 3 may also be disposed on a side of the battery assembly facing away from the buckle 2 or on the top side of the battery assembly, which is not limited here.

[0032] like Figures 3-6As shown, in this embodiment, the battery assembly further includes a rotating shaft 4; one end of the buckle 2 is provided with a guiding hole 21, and the unlocking key 3 is provided with a mounting hole 32 corresponding to the guiding hole 21, or one end of the buckle 2 is provided with a mounting hole 32, and the unlocking key 3 is provided with a guiding hole 21 corresponding to the mounting hole 32; the rotating shaft 4 sequentially passes through the guiding hole 21 and the mounting hole 32 to connect the buckle 2 and the unlocking key 3 into one body; in the pressed state, the movement of the unlocking key 3 drives the movement of the buckle 2 and the rotating shaft 4, and a relative movement is generated between the rotating shaft 4 and the buckle 2 under the guiding action of the guiding hole 21, so that the buckle 2 can withdraw from the locking groove 82.

[0033] In this embodiment, the unlocking key 3 can be arranged on the bottom side of the battery assembly, that is, the mounting seat 1 is arranged on the bottom side of the battery assembly, and a relief opening 83 for the user to perform a pressing operation is provided in the medical device. When unlocking, the user can apply an upward force to the unlocking key 3 to move the unlocking key 3 upward, thereby driving the rotating shaft 4 to move upward. During this process, due to the guiding action of the guiding hole 21, the rotating shaft 4 will also generate a relative displacement with the buckle 2 in the horizontal direction, that is, the buckle 2 can move into the mounting seat 1, and then withdraw from the locking groove 82 to achieve unlocking. Then the user can lift the entire battery assembly upwards to take out the battery assembly, which is convenient to operate. In this embodiment, a first guiding inclined surface 211 is arranged in the guiding hole 21, and the guiding hole 21 can be a triangular hole. When the user applies a force to the unlocking key 3, the rotating shaft 4 can move relative to the buckle 2 along the first guiding inclined surface 211, that is, drive the buckle 2 to move towards the direction close to the key, and then achieve unlocking.

[0034] As Figures 1-4 and Figure 6 As shown, in this embodiment, the battery assembly further includes an assembly main body 7 connected to the mounting seat 1. The assembly main body 7 and the mounting seat 1 enclose an assembly cavity. The rotating shaft 4 and the elastic return assembly are both located in the assembly cavity. The mounting seat 1 is also respectively provided with a first assembly opening for movably assembling the buckle 2 and a second assembly opening for movably assembling the unlocking key 3. The first assembly opening and the second assembly opening are located on different sides. That is, the buckle 2 can movably enter and exit the first assembly opening. When the elastic return assembly is in the natural state, the end of the buckle 2 away from the unlocking key 3 extends out of the mounting seat 1 through the first assembly opening, so that the buckle 2 can be engaged with the locking groove 82. In some specific embodiments, a limiting block 22 can be connected to the outer peripheral side of the buckle 2. When the elastic return assembly is in the natural state, the limiting block 22 abuts against the wall surface of the assembly cavity at the edge of the inner end of the first assembly opening, thereby increasing the stability of the buckle 2. The unlocking key 3 can move up and down along the second assembly opening, and at the same time, the second assembly opening can also limit the position movement of the unlocking key 3, that is, prevent the unlocking key 3 from shaking and improve the installation stability of the unlocking key 3.

[0035] In this embodiment, as Figure 3As shown, the rebounding component includes a first elastic member 5 connected between the assembly main body 7 and the unlocking key 3. The elastic expansion and contraction direction of the first elastic member 5 is perpendicular to the moving direction of the buckle 2 entering and exiting the first assembly port. Specifically, the first elastic member 5 can be a spring. One end of the first elastic member 5 is connected to the bottom of the assembly main body 7, and the other end is connected to the unlocking key 3. The elastic expansion and contraction direction of the first elastic member 5 is parallel to the pressing direction of the unlocking key 3, so that after the unlocking key 3 is pressed, it can automatically return to the initial position, thereby driving the buckle 2 to return to the initial position again, which is convenient for reinstalling the battery assembly. Further, as Figures 3-6 shown, in some embodiments of this embodiment, the unlocking key is further provided with a first guide rail 31, and the assembly cavity is provided with a chute that cooperates with the first guide rail 31. The direction of the chute is parallel to the elastic expansion and contraction direction of the first elastic member 5, that is, the direction of the chute is parallel to the height direction, so that when a user applies an upward force to the unlocking key 3, the unlocking key 3 can move upward stably, improving the acting stability among the unlocking key 3, the rotating shaft 4, and the buckle 2.

[0036] In this embodiment, a fixing portion 11 is provided on the mounting base 1. The rebounding component further includes a second elastic member 6 connected between the buckle 2 and the fixing portion 11. The elastic expansion and contraction direction of the first elastic member 5 is perpendicular to the elastic expansion and contraction direction of the second elastic member 6; when the second elastic member 6 is in a natural state, the end of the buckle 2 away from the fixing portion 11 extends outside the mounting base 1. Specifically, the fixing portion 11 can be a fixing block 22 protruding from the bottom of the assembly cavity, and the second elastic member 6 can be a spring, which is in an extended state in the natural state. When the unlocking key 3 is pressed and then drives the buckle 2 to move into the assembly cavity, the second elastic member 6 is compressed. When the force applied by the user to the unlocking key 3 is withdrawn and the outer end face of the buckle 2 is not blocked, the buckle 2 can automatically return to the initial position (the position where the outer end extends outside the mounting base 1) under the rebounding action of the second elastic member 6.

[0037] As Figure 7 and 8 shown, the assembly main body 7 in this embodiment can be a battery box, and the battery box includes a first housing 71 and a second housing 72. The first housing 71 and the second housing 72 can be fixed by means such as ultrasonic welding or screw fastening. The mounting base 1 and the housing can be connected by means of screw fixation, with good fixing effect and stable structure.

[0038] In this embodiment, the assembly main body 7 is provided with a second guide rail 711 for cooperating with the wall surface of the receiving groove 81. The receiving groove 81 may be provided with a second sliding groove adapted to the second guide rail 711. The second sliding groove may be the end face of the limiting portion 84 facing the locking groove 82. A second guiding inclined surface is further formed on the upper portion of the limiting portion 84 facing the locking groove 82. The second guiding inclined surface is a part of the second sliding groove and can guide the battery assembly to quickly align with the receiving groove 81 during the assembly operation, making the assembly operation simple.

[0039] The medical device in this embodiment may be a cardiopulmonary resuscitator for performing cardiopulmonary resuscitation. Cardiopulmonary resuscitation is abbreviated as CPR (cardiopulmonary resuscitation), which is a life-saving technique for the arrested heart and respiration, and is used to perform external chest compressions on patients with acute cardiac arrest to restore the patient's spontaneous breathing and spontaneous circulation.

[0040] As Figure 2 and 9 shown, the medical device includes a main unit 8 and a battery assembly. The main unit 8 is provided with a receiving groove 81 adapted to the outer shape of the battery assembly and a locking groove 82 communicating with the receiving groove 81. The receiving groove 81 in this embodiment may be a semi-enclosed receiving groove, and the shape of the receiving groove 81 is adapted to the outer shape of the battery assembly. During the assembly operation, the moving direction of the battery assembly may be perpendicular to the telescopic movement direction of the buckle 2. When the battery assembly is inserted into the receiving groove 81, the groove wall of the receiving groove 81 may be in abutting cooperation with the outer side wall of the battery assembly to achieve fixation in the horizontal direction. The buckle 2 will enter the locking groove 82 under the elastic action of the elastic component and be locked and fixed with the medical device, that is, fixation in the height direction is achieved. Thus, the cooperation between the receiving groove 81 and the locking groove 82 enables the battery assembly to be stably fixed on the medical device.

[0041] Furthermore, in this embodiment, a relief opening 83 communicating with the receiving groove 81 is further formed on the outside of the main unit 8. The relief opening 83 is used to provide an operating space for pressing the unlocking key 3. When the user needs to remove the battery assembly from the medical device, the user can insert the hand into the relief opening 83 and apply an upward force to the unlocking key 3, thereby driving the rotating shaft 4 to move upward. During this process, due to the guiding action of the guiding hole 21, the upward movement of the unlocking key 3 drives the rotating shaft 4 to move upward. At the same time, the rotating shaft 4 will also generate a relative displacement with the buckle 2 in the horizontal direction, that is, the buckle 2 can move towards the inside of the mounting seat 1, and then disengage from the locking groove 82 to achieve unlocking. The user can then lift the entire battery assembly upwards to remove the battery assembly, which is convenient to operate.

[0042] In this embodiment, a limiting portion 84 is provided on a side of the receiving groove 81 away from the locking groove 82. When the buckle 2 is engaged in the locking groove 82, a side of the battery assembly facing away from the buckle 2 abuts against the limiting portion 84. The limiting portion 84 and the wall surface of the receiving groove 81 can form a horizontal restriction on the battery assembly, and the cooperation between the locking groove 82 and the buckle 2 restricts the movement of the battery assembly in the height direction, thereby realizing the stable fixation of the battery assembly.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A battery assembly for medical equipment, the medical equipment comprising a receiving slot adapted to the shape of the battery assembly and a locking slot connected to the receiving slot, characterized in that: The battery assembly includes: a mounting base, a buckle and an unlocking key respectively arranged on the mounting base, the buckle is movably connected to the unlocking key, and a rebound component is also arranged in the mounting base, the rebound component is used to restore the buckle to an initial position after the position is changed; the buckle is used to move in and out of the locking groove driven by the unlocking key; the moving direction of the unlocking key is parallel to the direction of the battery assembly moving in and out of the receiving groove, after the user operates the unlocking key to make the buckle withdraw from the locking groove, the battery assembly as a whole leaves the receiving groove under the action of inertia.

2. The battery assembly according to claim 1, characterized in that: The battery assembly also includes a rotating shaft; a guide hole is formed at one end of the buckle, and the unlocking key is formed with a mounting hole corresponding to the guide hole, or a mounting hole is formed at one end of the buckle, and the unlocking key is formed with a guide hole corresponding to the mounting hole; the rotating shaft passes through the guide hole and the mounting hole to connect the buckle and the unlocking key as a whole; in a pressed state, the movement of the unlocking key drives the rotating shaft and the buckle to move, and the rotating shaft generates relative movement with the buckle under the guiding action of the guide hole, so that the buckle is away from the locking groove.

3. The battery assembly according to claim 2, characterized in that: The battery assembly also includes an assembly body connected to the mounting seat, the assembly body and the mounting seat together form an assembly cavity, the rotating shaft and the rebound assembly are both located in the assembly cavity, and the mounting seat is also respectively provided with a first assembly port for movably assembling the buckle and a second assembly port for movably assembling the unlocking key, and the first assembly port and the second assembly port are located on different sides.

4. The battery assembly according to claim 3, characterized in that: The rebound component includes a first elastic member connected between the assembly body and the unlocking key, the elastic expansion and contraction direction of the first elastic member is parallel to the pressing direction of the unlocking key, and the pressing direction of the unlocking key is perpendicular to the moving direction of the buckle entering and exiting the first assembly port.

5. The battery assembly according to claim 4, characterized in that: A fixing portion is provided on the mounting seat, and the rebound assembly also includes a second elastic member connected between the buckle and the fixing portion, and the elastic expansion and contraction direction of the first elastic member is perpendicular to the elastic expansion and contraction direction of the second elastic member; when the second elastic member is in a natural state, an end of the buckle away from the fixing portion extends outside the mounting seat.

6. The battery assembly according to claim 4, characterized in that: The unlocking key is further provided with a first guide rail, and the assembly cavity is provided with a first slide groove matched with the first guide rail, and the direction of the first slide groove is parallel to the elastic expansion and contraction direction of the first elastic member.

7. The battery assembly according to claim 3, characterized in that: The guide hole is provided with a first guide slope; and / or the assembly body is provided with a second guide rail for cooperating with the wall surface of the receiving groove.

8. A medical device, characterized in that: It comprises a host and a battery assembly as described in any one of claims 1 to 7, wherein the host is provided with a receiving groove adapted to the shape of the battery assembly and a locking groove connected to the receiving groove.

9. The medical device according to claim 8, characterized in that The host is also provided with a clearance opening connected to the receiving groove on the outside thereof, and the clearance opening is used to provide an operating space for pressing the unlocking key.

10. The medical device according to claim 8, characterized in that A limiting portion is provided on a side of the receiving groove away from the locking groove. When the buckle is inserted into the locking groove, a side of the battery assembly away from the buckle abuts against the limiting portion.

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