Battery charging device

Abstract

The utility model provides a battery charging device, which comprises a frame body, a battery charging device and a battery charging device, the probe assembly is movably arranged in the through groove, the probe assembly is provided with a charging end, and the probe assembly is electrically connected with the battery through the charging end so as to charge the battery; and the limiting assembly has a limiting state and an avoiding state, under the condition that the limiting assembly is in the limiting state, the fixed probe assembly cannot move in the through groove, and under the condition that the limiting assembly is in the avoiding state, the probe assembly can move in the through groove. According to the technical scheme provided by the utility model, the problem of unstable contact with the electrodes when the battery module is charged in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery charging, and in particular to a battery charging device. Background Art

[0002] After a battery module has been stationary for a long time, its voltage will drop. At this time, the lithium battery module needs to be recharged. At present, the module recharge is generally done by using clamps to clamp the positive and negative electrodes of the battery module respectively, and then the clamps are used to energize the entire module to achieve the purpose of recharging.

[0003] In the prior art, the electrodes of the battery module are clamped with pliers, which can easily damage the electrodes and affect the service life of the battery module. When charging, the pliers are easily offset due to accidental contact or vibration, resulting in poor connection with the electrodes, which not only prolongs the charging time and affects the charging efficiency, but may also cause the risk of short circuit, fire or explosion, affecting the safety of charging. Utility Model Content

[0004] The utility model provides a battery charging device to solve the problem of unstable contact between the electrodes when charging a battery module in the prior art.

[0005] The utility model provides a battery charging device, which includes: a frame, which has a through slot; a probe assembly, which is movably arranged in the through slot, and the probe assembly has a charging end, and the probe assembly is electrically connected to a battery through the charging end to charge the battery; a limit assembly, and the limit assembly has a limit state and an avoidance state, wherein when the limit assembly is in the limit state, the probe assembly is immovable in the through slot, and when the limit assembly is in the avoidance state, the probe assembly is movable in the through slot.

[0006] Furthermore, the limiting assembly includes a limiting member and a limiting hole, and the limiting hole is arranged on the frame, wherein, when the limiting assembly is in a limiting state, the limiting member is plugged into and cooperates with the limiting hole to fix the probe assembly; when the limiting assembly is in an avoidance state, the limiting member is separated from the limiting hole.

[0007] Furthermore, the probe assembly includes a shell and a probe, the probe is arranged at the end of the shell, a mounting hole is arranged on the shell, and a limiting member is movably arranged in the mounting hole, wherein the shape of the mounting hole matches the shape of the limiting member.

[0008] Furthermore, the limiting member has a protruding portion and a matching portion, the protruding portion is used to be plugged and matched with the limiting hole, and the matching portion is used to control the limiting component to switch between the limiting state and the avoidance state.

[0009] Furthermore, a driving assembly is arranged on the end face close to the mounting hole, an inclined surface is arranged on the mating portion, the driving assembly is connected with the mounting groove, and the driving assembly is abutted against the inclined surface; wherein, when the moving direction of the driving assembly is a first direction, the protrusion is disengaged from the limiting hole, and the limiting assembly is in an avoidance state; when the moving direction of the driving assembly is a second direction, the protrusion is plugged into the limiting hole, the limiting assembly is in a limiting state, and the first direction is opposite to the second direction.

[0010] Further, the direction of the inclined surface is inclined toward the slope direction of the limiting hole; or, the direction of the inclined surface is inclined toward the slope direction away from the limiting hole.

[0011] Furthermore, the limiting member also includes a first return spring, which is located on a side of the limiting member away from the limiting hole, and the first return spring is located in the mounting hole, wherein when the limiting assembly is in the avoidance state, the first return spring is in a compressed state.

[0012] Furthermore, the frame includes a crossbeam and two support rods, the crossbeam is connected to the two support rods respectively, and a through slot is provided on the crossbeam, wherein the battery is arranged between the two support rods so as to recharge the battery through the probe assembly.

[0013] Furthermore, the probe assembly includes a slider, the through slot includes a sliding slot, and the slider is arranged in the sliding slot so that the probe assembly moves in the sliding slot.

[0014] Furthermore, the battery charging device also includes: a fixing component, which is arranged on the support rod, and the fixing component is used to fix the position of the frame relative to the battery.

[0015] By applying the technical solution of the utility model, the probe assembly has a charging terminal for electrically connecting to the battery to recharge the battery, and the probe assembly is movably arranged in a through slot on the frame, and the limit assembly is arranged between the probe assembly and the frame, and the limit assembly has a limit state and an avoidance state. With such a configuration, the probe assembly can be moved in the through slot, and its position can be adjusted to achieve recharging of batteries of different sizes. When the probe assembly is adjusted to a suitable position, the position of the probe assembly in the through slot can be fixed by placing the limit assembly in a limit state. After the recharging is completed, the limit assembly can be placed in an avoidance state, and the probe assembly can be moved in the through slot to prepare for recharging other subsequent batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1A schematic diagram of assembling a battery charging device and a battery according to an embodiment of the utility model is shown;

[0018] Figure 2 The figure shows an assembly diagram of a probe assembly and a limit assembly provided according to an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of a probe assembly provided according to an embodiment of the utility model is shown;

[0020] Figure 4 A schematic structural diagram of a position limiting assembly provided according to an embodiment of the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. frame; 11. through slot; 12. limit hole; 13. crossbeam; 14. support rod; 15. sliding slot; 16. limit plate;

[0023] 20. Probe assembly; 21. Housing; 211. Mounting hole; 2111. First step surface; 2112. Second step surface; 22. Probe; 23. Slider; 24. Connecting block;

[0024] 31, stopper; 311, raised portion; 312, matching portion; 313, inclined surface; 314, first connecting plate; 315, second connecting plate; 321, operating member; 322, first return spring; 323, second return spring;

[0025] 41. threaded rod; 42. clamping block; 43. sliding rod;

[0026] 100. Battery; 101. Box; 102. Cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] like Figure 1As shown, the utility model provides a battery charging device, which includes: a frame 10, a probe assembly 20 and a limit assembly. The frame 10 has a through slot 11, the probe assembly 20 is movably arranged in the through slot 11, the probe assembly 20 has a charging terminal, and the probe assembly 20 is electrically connected to the battery 100 through the charging terminal to charge the battery 100. The limit assembly has a limit state and an avoidance state, wherein when the limit assembly is in the limit state, the probe assembly 20 is immovable in the through slot 11; when the limit assembly is in the avoidance state, the probe assembly 20 is movable in the through slot 11.

[0029] By applying the technical solution of the utility model, the probe assembly 20 has a charging terminal for electrically connecting to the battery 100 to recharge the battery 100, and the probe assembly 20 is movably arranged in the through slot 11 on the frame 10, and the limit assembly is arranged between the probe assembly 20 and the frame 10, and the limit assembly has a limit state and an avoidance state. In this way, the probe assembly 20 can move in the through slot 11, and its position can be adjusted to achieve recharging of batteries of different sizes. When the probe assembly 20 is adjusted to a suitable position, the position of the probe assembly 20 in the through slot 11 can be fixed by putting the limit assembly in the limit state. After the recharging is completed, the probe assembly 20 can be moved in the through slot 11 by putting the limit assembly in the avoidance state, so that the position of the probe assembly 20 can be adjusted to facilitate the subsequent recharging of other batteries. Optionally, the probe assembly 20 can also be movably arranged on the outside of the through slot 11, as long as the probe assembly 20 can be moved on the frame 10.

[0030] like Figure 2 and Figure 3 As shown, the limiting assembly includes a limiting member 31 and a limiting hole 12. The limiting hole 12 is provided on the frame 10, wherein, when the limiting assembly is in a limiting state, the limiting member 31 is plugged into and matched with the limiting hole 12 to fix the position of the probe assembly 20; when the limiting assembly is in an avoidance state, the limiting member 31 is separated from the limiting hole 12. The position of the probe assembly 20 is limited and released by the above structure, which has a simple structure and is easy to operate, and is convenient for fixing and adjusting the position of the probe assembly 20 at any time. In other embodiments of the present application, the limiting member and the limiting hole may also be threadedly matched, and the position of the probe assembly 20 is fixed by passing a screw through the limiting hole and matching with a nut.

[0031] In the present application, the limiter 31 can be movably arranged on the probe assembly 20, and the limiter 31 has an insertion position and an avoidance position relative to the probe assembly 20. When the limiter 31 is in the insertion position, the limiter 31 is plugged and matched with the limiting hole 12 to fix the position of the probe assembly 20. When the limiter 31 is in the avoidance position, that is, the limiter assembly is in the avoidance state, the probe assembly 20 can move in the through groove 11, thereby improving the flexibility of the position setting of the probe assembly 20. It can be understood that in other embodiments, the limiter 31 can also be fixedly arranged on the probe assembly 20, as long as it can cooperate with the limiting hole 12 to limit the position of the probe assembly 20.

[0032] Specifically, the probe assembly 20 includes a housing 21 and a probe 22, wherein the probe 22 is disposed at the end of the housing 21, a mounting hole 211 is disposed on the housing 21, and a stopper 31 is movably disposed in the mounting hole 211, wherein the shape of the mounting hole 211 matches the shape of the stopper 31. Such a configuration makes the probe assembly 20 and the stopper 31 miniaturized and saves space.

[0033] Furthermore, the probe 22 has a power connection end and a power supply end. The power connection end is connected to an external power source through a wire, and the power supply end supplies power to the battery by contacting the battery. The probe assembly 20 also includes a connection block 24, which is disposed at the bottom of the shell 21 and is fixedly connected to the shell 21. The probe 22 is disposed in the connection block 24. The connection block 24 is used to place the wires of the power connection end of the probe 22 to avoid a cluttered wiring harness that affects the power supply effect. The shell 21 is provided with a wire outlet, so that the wires of the power connection end enter the shell 21 from the wire outlet and are connected to the probe 22.

[0034] In the present application, the probe 22 is fixedly disposed inside the connection block 24. In other embodiments, the probe 22 may also be retractably disposed inside the connection block 24 to accommodate battery modules of different heights, so that the probe 22 can better contact the battery electrodes for charging.

[0035] like Figure 4 As shown, the limiting member 31 has a protruding portion 311 and a matching portion 312. The protruding portion 311 is used to be plugged and matched with the limiting hole 12, and the matching portion 312 is used to control the limiting member 31 to switch between the limiting state and the avoidance state. In this way, the protruding portion 311 can be plugged or disengaged from the limiting hole 12 by moving the matching portion 312, which has a simple structure and is easy to operate.

[0036] Specifically, a driving assembly is provided on the end surface close to the mounting hole 211, and an inclined surface 313 is provided on the matching portion 312. The driving assembly is connected to the mounting hole 211, and the driving assembly is abutted against the inclined surface 313. When the moving direction of the driving assembly is the first direction, the protrusion 311 is disengaged from the limiting hole 12, and the limiting assembly is in an avoidance state. When the moving direction of the driving assembly is the second direction, the protrusion 311 is plugged into the limiting hole 12, and the limiting assembly is in a limiting state, and the first direction is opposite to the second direction.

[0037] In the present application, the direction of the inclined surface 313 is inclined toward the limiting hole 12 , or the direction of the inclined surface 313 is inclined away from the limiting hole 12 .

[0038] For example, in an optional embodiment, Figure 4 As shown, the direction of the inclined surface 313 is inclined toward the limiting hole 12. It can be understood that in this case, the first direction is the vertical downward direction, and the second direction is the vertical upward direction. That is, the driving assembly is pressed downward so that the moving direction of the driving assembly is vertically downward, the matching portion 312 is pushed to move into the mounting hole 211, and the protrusion 311 is separated from the limiting hole 12; the driving assembly is pulled upward so that the moving direction of the driving assembly is vertically upward, the matching portion 312 is pushed to move out of the mounting hole 211, and finally the protrusion 311 enters the limiting hole 12, thereby plugging with the limiting hole 12.

[0039] In another optional embodiment, the direction of the inclined surface 313 is inclined away from the limiting hole 12. It can be understood that in this case, the first direction is the vertically upward direction, and the second direction is the vertically downward direction. That is, the driving assembly is pressed downward so that the moving direction of the driving assembly is vertically downward, the matching portion 312 is pushed to move out of the mounting hole 211, and finally the protrusion 311 enters the limiting hole 12, thereby plugging with the limiting hole 12; the driving assembly is pulled upward so that the moving direction of the driving assembly is vertically upward, the matching portion 312 is pulled to move into the mounting hole 211, and the protrusion 311 is separated from the limiting hole 12.

[0040] Optionally, the bottom of the operating member 321 can be set to a slope that matches the slope 313 , that is, the inclination direction and inclination angle of the bottom slope of the operating member 321 are consistent with the inclination direction and inclination angle of the slope 313 .

[0041] In the embodiments of the present application, the plugging state of the limiting hole and the protrusion is adjusted by controlling the movement direction of the driving assembly, which makes the adjustment of the limiting state of the limiting member more flexible.

[0042] Specifically, the driving assembly further includes a second return spring 323, the operating member 321 is sleeved inside the second return spring 323, and one end of the second return spring 323 is fixedly connected to the operating member 321. The other end is fixedly connected to the housing 21. When the probe assembly 20 needs to be moved, the operating member 321 is driven to compress the second return spring 323 until the operating member 321 abuts against the inclined surface 313, thereby driving the limit member 31 to be in the avoidance position. Releasing the operating member 321 can drive the operating member 321 back to the initial position through the second return spring 323.

[0043] The limiting member 31 further comprises a first return spring 322, which is located on the side of the limiting member 31 away from the limiting hole 12, wherein when the limiting assembly is in the avoidance state, the first return spring 322 is in a compressed state, the first return spring 322 is located in the mounting hole 211, and the first return spring 322 is connected to the limiting member 31 by driving, and the first return spring 322 is used to drive the limiting member 31 to move from the avoidance position to the plug-in position; the operating member 321 cooperates with the inclined surface 313 to drive the protrusion 311 to move from the plug-in position to the avoidance position. Through the above structure, when the operating member 321, the second return spring 323 and the first return spring 322 are in the initial position, the limiting member 31 is in the plug-in position, and the position of the probe assembly 20 is fixed at this time. When the position of the probe assembly 20 is adjusted, driving the operating member 321 will cause the second return spring 323 and the first return spring 322 to be in a compressed state, and at this time, the limiting member 31 is in the avoidance position. After the position adjustment is completed, the operating member 321 is released, and the second return spring 323 can drive the operating member 321 to reset under the action of elastic force, and the first return spring 322 can pop out the limiter 31 under the action of elastic force, so that the limiter 31 switches from the avoidance position to the plug-in position to fix the position of the probe assembly 20. In this way, the plug-in position and the avoidance position of the limiter 31 can be switched by only driving and adjusting the operating member 321, which greatly simplifies the operation steps, and the switching between the two states can be achieved without other additional driving force, which improves the convenience of operation of the device.

[0044] It can be understood that when the limit member 31 maintains the plug-in position, the first return spring 322 can be in a balanced state, that is, when the limit member 31 is in the plug-in position, the first return spring 322 does not apply an elastic force to the limit member 31; optionally, the first return spring 322 can also be in a compressed state, that is, when the limit member 31 is in the plug-in position, the first return spring 322 applies an elastic force to the limit member 31 to move toward the limit hole 12, so that the plugging of the protrusion 311 and the limit hole 12 can be more stable, and the situation that the protrusion 311 may retract after popping out due to the shaking of the first return spring 322 can be avoided.

[0045] like Figure 3 As shown, the bottom surface of the mounting hole 211 includes a first step surface 2111 and a second step surface 2112, the matching portion 312 is movably arranged on the first step surface 2111, the protrusion 311 is movably arranged on the second step surface, the matching portion 312 has a first connecting plate 314, the protrusion 311 has a second connecting plate 315, the first connecting plate 314 abuts against the second connecting plate 315, and the matching portion 312 cooperates with the first connecting plate 314 and the second connecting plate 315 to drive the protrusion 311 to move. Specifically in this embodiment, the first step surface 2111 is arranged higher than the second step surface 2112, the matching portion 312 is placed on the first step surface 2111, and the protrusion 311 is placed on the second connecting plate 315. By providing the first connecting plate 314 and the second connecting plate 315, while driving the protrusion 311 to move, the pressure on the protrusion 311 in the vertical direction can also be reduced, so that the movement of the protrusion 311 is more flexible.

[0046] Illustratively, in an optional embodiment, the first step surface 2111 may also be lower than the second step surface 2112 or be set at the same height as the second step surface 2112. It can be understood that the specific shape of the mounting hole 211 is not limited in the present application, as long as the mounting hole 211 has enough space to allow the limit member 31 to switch between the avoidance position and the plug-in position.

[0047] Optionally, the protrusion 311 can also be set on the top of the first connecting plate 314 and the second connecting plate 315 or on one side of the matching portion 312, as long as the protrusion 311 can be plugged into or disengaged from the limiting hole 12, thereby realizing the switching of the limiting member 31 between the avoidance position and the plug-in position.

[0048] It is understandable that in another optional embodiment of the present application, the first connecting plate 314 and the second connecting plate 315 can also be formed in one piece, which is convenient for processing and increases the integrity of the limit member 31. It can avoid that when the limit member 31 switches between the avoidance position and the plug-in position, breakage between the components can be avoided, which affects the charging efficiency of the battery 100.

[0049] like Figure 1 As shown, the frame 10 includes a crossbeam 13 and two support rods 14, the crossbeam 13 is connected to the two support rods 14 respectively, and a through slot 11 is provided on the crossbeam 13, wherein the battery 100 is arranged between the two support rods 14, so as to recharge the battery 100 through the probe assembly 20. In this way, the probe assembly 20 can be passed through the crossbeam 13 through the through slot 11, so that the adjustment range of the probe assembly 20 is larger to adapt to battery modules of different sizes.

[0050] The probe assembly 20 includes a slider 23, the through slot 11 includes a sliding slot 15, and the slider 23 is disposed in the sliding slot 15 so that the probe assembly 20 moves in the sliding slot 15. In the present application, a limiting plate 16 is further disposed along the inner wall direction of the through slot 11 at one end of the sliding slot 15 away from the probe assembly 20, and a plurality of limiting holes 12 are disposed on the limiting plate 16 at intervals.

[0051] It is understandable that in another optional embodiment, the slider 23 may also be directly overlapped on the top of the sliding groove 15 to achieve the movement of the probe assembly 20 in the through groove 11.

[0052] Furthermore, the battery charging device also includes a fixing component, which is arranged on the support rod 14 and is used to fix the position of the frame 10 relative to the battery 100. By providing the fixing component, the battery charging device and the battery can be conveniently fixed together to improve the stability of charging.

[0053] Specifically, the fixing assembly includes a threaded rod 41, a clamping block 42 and a sliding rod 43. The threaded rod 41 and the sliding rod 43 are respectively inserted into the support rod 14 on one side of the frame 10. The threaded rod 41 and the clamping block 42 are rotatably connected. The clamping block 42 is pushed close to the battery 100 by rotating the threaded rod 41 and fixed between the clamping block 42 and the support rod 14 on the other side of the frame 10. The sliding rod 43 is fixedly connected to the clamping block 42 to guide the moving direction of the clamping block 42 and support the frame 10. Such a setting can facilitate the adjustment of the height direction of the frame 10 relative to the battery 100, so as to facilitate more stable contact between the probe 22 and the battery 100 and improve the charging effect.

[0054] Specifically, the battery 100 is placed inside the box 101, and a cover 102 is provided on the top of the box 101. The cover 102 is detachably connected to the box 101, and two through holes are provided on the cover 102. The total positive and negative poles of the battery 100 are protruded from the through holes on the cover 102, which is convenient for contact with the probe 22 for charging. The cover 102 can also be removed to charge the internal single battery.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0057] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery charging device, characterized in that: The battery charging device comprises: A frame body (10), wherein the frame body (10) has a through slot (11); A probe assembly (20) is movably disposed in the through slot (11), the probe assembly (20) having a charging terminal, and the probe assembly (20) is electrically connected to the battery (100) via the charging terminal to recharge the battery (100); A limit assembly, the limit assembly having a limit state and an avoidance state, wherein when the limit assembly is in the limit state, the probe assembly (20) is immovable in the through slot (11), and when the limit assembly is in the avoidance state, the probe assembly (20) is movable in the through slot (11).

2. The battery charging device according to claim 1, characterized in that: The limiting assembly comprises a limiting member (31) and a limiting hole (12), wherein the limiting hole (12) is arranged on the frame (10), wherein when the limiting assembly is in the limiting state, the limiting member (31) is plugged into and matched with the limiting hole (12) to fix the probe assembly (20); and when the limiting assembly is in the avoiding state, the limiting member (31) is separated from the limiting hole (12).

3. The battery charging device according to claim 2, characterized in that: The probe assembly (20) comprises a shell (21) and a probe (22), wherein the probe (22) is arranged at the end of the shell (21), and a mounting hole (211) is arranged on the shell (21), and the limiting member (31) is movably arranged in the mounting hole (211), wherein the shape of the mounting hole (211) matches the shape of the limiting member (31).

4. The battery charging device according to claim 3, characterized in that: The limiting member (31) comprises a protruding portion (311) and a matching portion (312); the protruding portion (311) is used for plugging and matching with the limiting hole (12); and the matching portion (312) is used for controlling the limiting member (31) to switch between the limiting state and the avoiding state.

5. The battery charging device according to claim 4, characterized in that: A driving assembly is arranged on the end face close to the mounting hole (211), and an inclined surface (313) is arranged on the matching portion (312); the driving assembly is in communication with the mounting hole (211), and the driving assembly is in abutment with the inclined surface (313); wherein, when the moving direction of the driving assembly is a first direction, the protruding portion (311) is disengaged from the limiting hole (12), and the limiting assembly is in the avoiding state; and when the moving direction of the driving assembly is a second direction, the protruding portion (311) is plugged into the limiting hole (12), and the limiting assembly is in the limiting state, and the first direction is opposite to the second direction.

6. The battery charging device according to claim 5, characterized in that: The direction of the inclined surface (313) is inclined toward the limiting hole (12); or, The direction of the inclined surface (313) is inclined in a direction away from the limiting hole (12).

7. The battery charging device according to claim 5, characterized in that: The limiting member (31) further comprises a first return spring (322), wherein the first return spring (322) is located on a side of the limiting member (31) away from the limiting hole (12), wherein when the limiting assembly is in the avoidance state, the first return spring (322) is in a compressed state.

8. The battery charging device according to claim 1, characterized in that: The frame (10) comprises a crossbeam (13) and two support rods (14), wherein the crossbeam (13) is respectively connected to the two support rods (14), and the crossbeam (13) is provided with the through slot (11), wherein the battery (100) is arranged between the two support rods (14) so ​​as to recharge the battery (100) through the probe assembly (20).

9. The battery charging device according to claim 1, characterized in that: The probe assembly (20) comprises a slider (23), the through slot (11) comprises a sliding slot (15), and the slider (23) is arranged in the sliding slot (15) so that the probe assembly (20) moves in the sliding slot (15).

10. The battery charging device according to claim 8, characterized in that: The battery charging device also includes: A fixing component is arranged on the support rod (14), and the fixing component is used to fix the position of the frame (10) relative to the battery (100).

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