Battery charging device

Abstract

The utility model discloses a battery charging device, comprising a battery, the outer wall of which is provided with a tooth part; the charging rack comprises a mounting channel, a charging end plate, a battery locking mechanism, an unlocking mechanism and an unlocking keeping mechanism; the battery locking mechanism at least comprises a locking piece; the unlocking keeping mechanism at least comprises a pressing piece, a pushing piece and a keeping matching piece, and the unlocking mechanism has an unlocking keeping state capable of being locked with the keeping matching piece; when the battery is inserted into the mounting channel, the tooth part and the locking part are engaged and locked, the pressing part can be triggered to move along the first direction so as to drive the pushing part to move along the second direction, and the keeping matching part is propped against the unlocking mechanism; when external force is applied to drive the unlocking mechanism to move in the direction of the mounting channel, the locking piece can be driven to be separated from the tooth part, the unlocking mechanism enters an unlocking keeping state, so that the unlocking mechanism is kept in the state of driving the locking piece to be separated from the tooth part, and the battery can be separated from the charging frame. According to the utility model, the charging rack can stably lock the battery, and the locking and unlocking operations are convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery charging structure technical field, especially, a kind of battery charging device. BACKGROUND

[0002] With the popularity of commercial high-capacity density lithium battery, more and more users choose lithium battery electric vehicle as daily commuting tool, production tool etc., to facilitate the charging of electric vehicle, it is necessary to set up battery swap station to extend the travel distance, the battery in battery swap station is assembled on charging rack for charging.

[0003] Chinese patent CN220180594U discloses a kind of battery pack locking and fixing mechanism, it is designed for the phenomenon that battery pack shakes in battery compartment, battery pack locking and fixing mechanism is designed, it is limited by four fixed components in the front, rear, left and right of battery pack, relatively complex structure, and when locking operation and unlocking operation are carried out, it needs to be carried out one by one, relatively inconvenient to use, and fixed component occupies relatively large volume, the overall structure increases floor area. UTILITY MODEL CONTENT

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a kind of battery charging device, it is set to ensure that battery is smoothly pulled out, and battery locking mechanism, unlocking mechanism, unlocking holding structure layout is reasonable, and the space occupied is reduced, and the plug-in operation of battery is convenient.

[0005] The utility model solves the technical scheme that the utility model employs to solve its technical problems is: a kind of battery charging device, comprising:

[0006] Battery, outer wall has tooth portion, the tooth portion extends along battery axial direction;

[0007] Charging rack, including the installation channel formed by the bracket, the charging end plate in the installation channel end part, battery locking mechanism, unlocking mechanism and the unlocking holding mechanism of charging end plate;

[0008] The battery locking mechanism at least includes locking piece rotationally connected to the charging rack and first elastic member abutting with locking piece;

[0009] The unlocking holding mechanism at least includes lower pressing piece, pusher set in linkage with lower pressing piece, and holding fitting piece, the unlocking mechanism has the unlocking holding state that can be locked with holding fitting piece;

[0010] When battery is inserted into installation channel, the tooth portion and locking piece are engaged and locked, and lower pressing piece can be triggered to move along first direction to drive pusher to move along second direction, and make holding fitting piece abut with unlocking mechanism;

[0011] The unlocking mechanism is driven to move along the direction of the mounting channel by an external force, and the locking member is driven to disengage from the tooth portion, and the unlocking mechanism enters the unlocking holding state, so that the unlocking mechanism is kept in the state of driving the locking member to disengage from the tooth portion, and the battery can be disengaged from the charging rack.

[0012] Further, the unlocking mechanism forms a holding fitting hole, and a part of the holding fitting member extends into the holding fitting hole, and the two are locked and limited, and the unlocking mechanism enters the unlocking holding state.

[0013] Further, the unlocking mechanism at least includes an unlocking member and an unlocking push rod connected with the unlocking member, the unlocking member has an inclined driving surface, and the locking member forms an inclined surface in abutment with the inclined driving surface; the unlocking push rod is driven to move downward along the mounting channel by an external force, and the inclined driving surface and the inclined surface cooperate to drive the locking member to flip away from the battery; when the unlocking mechanism disengages from the unlocking holding state, the inclined surface drives the unlocking member to automatically move upward along the mounting channel, or the inclined surface and the second elastic member cooperate to drive the unlocking member to automatically move upward along the mounting channel.

[0014] Further, the holding fitting member includes a fixed part and a telescopic part, the fixed part is sleeved with a third elastic member, and the telescopic part can be contracted into the fixed part; when the holding fitting member abuts against the unlocking mechanism, it is misaligned with the holding fitting hole, and the telescopic part is contracted into the fixed part; when the telescopic part extends into the holding fitting hole, the holding fitting member is locked and limited with the holding fitting hole, and the third elastic member is in a compressed state.

[0015] Further, the charging end plate forms a mounting groove, the pushing member moves in the mounting groove, and the telescopic part penetrates the side wall of the mounting groove and cooperates with the unlocking member.

[0016] Further, the downward pressing member is translated upward by a distance S1, and the unlocking holding state is released; when the battery and the locking member are locked, the distance between the locking point of the tooth portion of the battery and the upper surface of the charging end plate is S2, and the length range corresponding to the bottom surface S1 to S2 of the battery is not provided with the tooth portion.

[0017] Further, the downward pressing member abuts against a fourth elastic member, and the fourth elastic member is used to provide a tendency of the downward pressing member moving in the direction of protruding from the charging end plate.

[0018] Further, the unlocking member is in a U shape, and the closed end of the unlocking member forms the inclined driving surface, and the locking member is arranged below the unlocking member and has an inclined surface formed on the top surface.

[0019] Further, the closed end of the unlocking member forms a cutting portion toward the side of the battery, and the two sides of the unlocking member form extension protrusions which can abut against the second elastic member.

[0020] Further, the charging rack forms a guide sliding groove matched with both sides of the unlocking member, which extends along the length direction of the installation channel, so that the unlocking member moves up and down along the installation channel.

[0021] Further, the support movably provided with a ball, when the battery is inserted into the installation channel, the outer wall thereof is in rolling cooperation with the ball; the ball is in abutment with the resilient member.

[0022] Further, the first direction and the second direction are perpendicular to each other.

[0023] The battery charging device has the advantages that: 1) the battery locking mechanism is used to realize stable locking of the battery by the charging rack, and the battery can be locked in the process of being inserted into the installation channel, and the operation is convenient; 2) the unlocking retaining mechanism is arranged, so that the unlocking mechanism can be kept in the state after the battery is unlocked, until the battery can be smoothly pulled out of the charging rack; 3) the unlocking retaining mechanism enters the preliminary state of abutment between the retaining cooperation member and the unlocking mechanism after the battery is completely inserted into the installation channel, when the unlocking member drives the locking member to turn away from the tooth part of the battery, the retaining cooperation member of the unlocking retaining mechanism partially enters the retaining cooperation hole, and the whole process only needs to operate the unlocking mechanism, and the operation is simple and the operation steps are simplified; 4) when the unlocking mechanism is driven by an external force, the locking member can be separated from the tooth part, at the same time, the unlocking mechanism enters the unlocking retaining state, the retaining cooperation member can automatically separate from the retaining cooperation hole after the battery is released from the pressing of the pressing member, and the whole process only needs one step of pressing the unlocking member, so that the battery can be smoothly pulled out, and after the battery is pulled out or before the next battery is inserted, the unlocking mechanism state can be coupled to the charging and locked to the battery, and the operation is more convenient; 5) the unlocking retaining mechanism is arranged on the bottom charging end plate, the unlocking mechanism and the battery locking mechanism are arranged on the side of the charging rack, the overall layout is reasonable, different mechanisms are dispersed in different areas, the occupied space is reduced, and the battery charging device is beneficially reduced; 6) the ball is embedded on the charging rack support, the ball can also be designed as a floating type, the battery can be smoothly pulled out, and the battery outer wall is not abraded; 7) the battery locking mechanism, the unlocking mechanism and the unlocking retaining mechanism are all mechanical structures, and no electronic structure is adopted, so that the stability and reliability are higher, and the overall service life is longer. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The battery charging device provided by the utility model is shown in the three-dimensional view Figure 1 .

[0025] Figure 2 The battery charging device provided by the utility model is shown in the three-dimensional view Figure 2 .

[0026] Figure 3 The charging rack is shown in the exploded structural schematic view.

[0027] Figure 4 The partial structure diagram of the battery locking mechanism, the unlocking mechanism and the unlocking holding mechanism is provided Figure 1 .

[0028] Figure 5 The partial structure diagram of the battery locking mechanism, the unlocking mechanism and the unlocking holding mechanism is provided Figure 2 .

[0029] Figure 6 The partial structure diagram of the battery locking mechanism, the unlocking mechanism and the unlocking holding mechanism is provided Figure 3 .

[0030] Figure 7 The three-dimensional view of the battery locking mechanism, the unlocking mechanism and the unlocking holding mechanism is provided.

[0031] Figure 8 The cross-sectional view of the locking piece and the tooth part engaged locking is provided.

[0032] Figure 9 The cross-sectional view of the locking piece and the tooth part unlocked disengagement is provided.

[0033] Figure 10 The cross-sectional view of the holding cooperation piece and the holding cooperation hole in the unlocking holding state is provided.

[0034] Figure 11 The partial cross-sectional view of the holding cooperation piece and the holding cooperation hole in the unlocking holding state is provided.

[0035] Wherein, 1-battery, 11-tooth part, 2-charging rack, 21-bracket, 211-guiding sliding groove, 212-supporting rod, 213-connecting ring, 214-rolling ball, 22-installation channel, 23-charging end plate, 231-installation groove, 3-battery locking mechanism, 31-locking piece, 311-inclined surface, 32-first elastic piece, 4-unlocking mechanism, 41-holding cooperation hole, 42-unlocking piece, 421-inclined driving surface, 422-cutting part, 423-extended protruding part, 43-unlocking push rod, 44-second elastic piece, 45-unlocking button, 5-unlocking holding mechanism, 51-pressing piece, 511-fourth elastic piece, 52-advancing piece, 521-body, 522-acting part, 53-holding cooperation piece, 531-fixing part, 532-telescopic part, 533-third elastic piece, 534-fifth elastic piece. DETAILED DESCRIPTION

[0036] In order to make the person in the art better understand the utility model scheme, the following will be combined with the drawings in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the utility model, but not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0037] As shown in Figure 1 , A battery charging device, as shown in Figure 2 , comprises a battery 1 with a tooth portion 11 on the outer wall, and a charging rack 2 for inserting and charging the battery 1, and the tooth portion 11 extends along the axial direction of the battery 1. In the embodiment, the tooth portion 11 extends along the entire length direction of the battery 1, or in other words, extends along most of the length direction of the battery 1.

[0038] The charging rack 2 comprises a mounting channel 22 formed by a support 21, a charging end plate 23 at the end, a battery locking mechanism 3, an unlocking mechanism 4, and an unlocking retaining mechanism 5 arranged on the charging end plate 23. In the embodiment, the support 21 has a hexagonal outer contour, which comprises a support rod 212 extending along the axial direction, and a connecting ring 213 connecting a plurality of support rods 212 at the inlet end of the mounting channel 22.

[0039] The battery locking mechanism 3 at least comprises a locking piece 31 rotatably connected to the charging rack 2, and a first elastic piece 32 abutting against the locking piece 31. In the embodiment, the first elastic piece 32 is a torsion spring structure, which is used to drive the locking piece 31 towards the tooth portion 11 of the battery 1. The top surface of the locking piece 31 forms an inclined surface 311, which extends obliquely from the outside to the inside of the mounting channel 22, as shown in Figure 6 . The bottom of the locking piece 31 is rotatably connected to the charging rack 2 through a rotating shaft.

[0040] The unlocking mechanism 4 at least comprises an unlocking piece 42, and an unlocking push rod 43 connected to the unlocking piece 42, and the end of the unlocking push rod 43 can be further provided with an unlocking button 45. In the embodiment, the unlocking piece 42 has a U-shaped structure with the opening facing downward, and the closed end forms an inclined driving surface 421, as shown in Figure 6As shown, the inclined driving surface 421 extends downward and inward, i.e. in the same direction as the inclined surface 311 of the locking member 31, and the locking member 31 is arranged below and inside the unlocking member 42. The closed end of the unlocking member 42 is formed with a cutaway portion 422 towards the side of the battery 1, which cutaway portion 422 extends downward and inward, and which cutaway portion 422 forms a clearance for the insertion of the battery 1 and also guides the downward insertion of the battery 1. The two sides of the unlocking member 42 are formed with extended protrusions 423, the lower part of which extended protrusions 423 abut against the second elastic member 44. The unlocking mechanism 4 is formed with a retaining fitting hole 41, which retaining fitting hole 41 is formed in the free end wall thickness of the unlocking member 42, and the specific position and number of the retaining fitting hole 41 are not limited.

[0041] In order to ensure that the unlocking member 42 can move up and down along the mounting channel 22, a guide sliding groove 211 is formed on the charging rack 2, which guide sliding groove 211 can be arranged on the support 21 or on the charging end plate 23. In this embodiment, the guide sliding groove 211 is arranged on the charging end plate 23 and extends along the axial length direction of the mounting channel 22, and the two sides of the unlocking member 42 are located in the guide sliding groove 211, so that the guide sliding groove 211 limits the unlocking member 42 to move up and down along the mounting channel 22 and avoids deviation.

[0042] The unlocking retaining mechanism 5 at least includes a depressing member 51, a pushing member 52 arranged in linkage with the depressing member 51, and a retaining fitting member 53. The depressing member 51 abuts against a fourth elastic member 511, which fourth elastic member 511 is used to provide a tendency for the depressing member 51 to move in the direction of protruding from the charging end plate 23, in other words, to provide an upward elastic force for the depressing member 51. Figure 4 As an example in the direction shown, the fourth elastic member 511 provides an upward elastic force for the depressing member 51.

[0043] A mounting groove 231 is formed on the charging end plate 23, and the pushing member 52 moves in the mounting groove 231, which mounting groove 231 limits the movement range of the pushing member 52 and avoids deviation. The depressing member 51 extends out of the top opening of the mounting groove 231, and the telescopic portion 532 penetrates the side wall of the mounting groove 231 and cooperates with the unlocking member 42. The cooperation here includes the telescopic portion 532 abutting against the side wall of the unlocking member 42, and also includes the telescopic portion 532 extending into the retaining fitting hole 41 of the unlocking member 42.

[0044] As shown in Figure 4 , Figure 5 , Figure 10 The retaining fitting member 53 includes a fixed portion 531 and a telescopic portion 532, the outside of the fixed portion 531 is sleeved with a third elastic member 533, and the telescopic portion 532 can be retracted into the inside of the fixed portion 531. A fifth elastic member 534 is arranged between the telescopic portion 532 and the fixed portion 531, as shown in Figure 11 .

[0045] The propulsion member 52 includes a body 521 for connecting the fixing part 531, and an action part 522 with a height less than that of the body 521. The top surface of the action part 522 has an arc-shaped surface. The pressing member 51 moves the propulsion member 52 in the horizontal direction by pressing down on the arc-shaped surface.

[0046] The unlocking mechanism 4 has an unlocking holding state that can be locked with the holding engagement member 53. Specifically, when the telescopic part 532 of the holding engagement member 53 extends into the holding engagement hole 41 on the unlocking member 42, the holding engagement member 53 and the holding engagement hole 41 are locked and limited, and the unlocking member 42 cannot move up or down. The unlocking mechanism 4 enters the unlocking holding state, at which time the third elastic member 533 is in a compressed state.

[0047] To facilitate the insertion of battery 1 into charging bracket 2 along mounting channel 22, a ball bearing 214 is movably mounted on bracket 21. The ball bearing 214 rolls against the outer wall of battery 1, thereby reducing the frictional resistance when battery 1 is inserted into mounting channel 22. The ball bearing 214 can also abut against a spring-loaded component. In this case, the ball bearing 214 is a floating design with a larger relative range of motion. While facilitating the insertion of battery 1, it provides more adjustable space for the connection between battery 1 and charging terminal plate 23. Even if the connection structure deviates from the target position, the ball bearing 214 and the spring-loaded component can still provide stable support for battery 1 in all directions.

[0048] In the initial state, the pressing member 51 protrudes from the surface of the charging end plate 23 under the action of the fourth elastic member 511, the pushing member 52 is not driven by the pressing member 51, the third elastic member 533 is in a naturally extended state, maintaining a certain distance between the mating member 53 and the unlocking member 42; the locking member 31 flips inward toward the installation channel 22 under the action of the first elastic member 32.

[0049] When battery 1 is inserted into the mounting channel 22, the teeth 11 can move against the locking member 31. Under the action of the first elastic member 32, the teeth 11 and the locking member 31 engage and lock. Figure 8 As shown, the battery 1 moves closer to the charging end plate 23 and triggers the pressing member 51 to move along the first direction, thereby driving the pushing member 52 to move along the second direction, and causing the retaining engagement member 53 to abut against the unlocking mechanism 4. At this time, the retaining engagement member 53 is misaligned with the retaining engagement hole 41. Specifically, the retaining engagement hole 41 is located above the retaining engagement member 53, so that the retaining engagement member 53 abuts against the side wall of the unlocking member 42, and the telescopic part 532 is pressed and retracted into the fixed part 531 by the unlocking member 42. Of course, the battery 1 and the locking member 31 remain in the locked state. In this embodiment, the first direction and the second direction are perpendicular to each other, specifically the first direction is... Figure 1 The vertical direction shown is up and down, and the second direction is... Figure 1 The horizontal direction is shown.

[0050] When the battery 1 needs to be unlocked, an external force is applied to drive the unlocking mechanism 4 to move along the direction of the mounting channel 22, specifically, the unlocking button 45 is pressed down, so that the unlocking push rod 43 moves downward, in turn driving the unlocking piece 42 to move downward along the mounting channel 22, under the cooperation of the abutting of the inclined driving surface 421 of the unlocking piece 42 and the beveled surface 311 of the locking piece 31, the locking piece 31 is flipped away from the battery 1 against the action of the first elastic piece 32, so that the locking piece 31 is separated from the tooth part 11, as shown in Figure 9 , and the telescopic part 532 enters the retaining fitting hole 41, as shown in Figure 10 , the unlocking mechanism 4 enters the unlocking retaining state, at this time the unlocking piece 42 cannot move upward or downward under the limitation of the retaining fitting piece 53, so that the unlocking mechanism 4 is kept in the state of driving the locking piece 31 to separate from the tooth part 11, at this time the battery 1 can be smoothly separated from the charging rack 2.

[0051] When the battery 1 is pulled out, under the resetting action of the fourth elastic piece 511, the pressing piece 51 moves upward and is separated from the abutment with the pushing piece 52, so that under the action of the third elastic piece 533, the telescopic part 532 is separated from the retaining fitting hole 41, the unlocking mechanism 4 is separated from the unlocking retaining state, under the joint action of the beveled surface 311 and the inclined driving surface 421, specifically, under the resetting action of the first elastic piece 32 of the locking piece 31, the unlocking piece 42 automatically moves upward along the mounting channel 22, of course, under the action of the second elastic piece 44 below the extended protrusion 423, the beveled surface 311 and the inclined driving surface 421 interact to automatically drive the unlocking piece 42 to move upward along the mounting channel 22, the unlocking mechanism 4 reenters the initial state, and the battery locking mechanism 3 and the unlocking retaining mechanism 5 also reenter the initial state.

[0052] In order to ensure that the battery 1 is smoothly pulled out, the distance S1 of the upward translation of the pressing piece 51 is defined, then the unlocking retaining state of the unlocking mechanism 4 is released, when the battery 1 is locked with the locking piece 31, the minimum distance between the locking point between the tooth part 11 of the battery 1 and the locking piece 31 and the end of the tooth part 11 is S2, then S1>S2.

[0053] When the battery 1 moves upward in the unlocked holding state, the pressing piece 51 moves upward under the action of the fourth elastic piece 511, the pushing piece 52 synchronously retreats under the action of the third elastic piece 533, and the holding fitting piece 53 moves in the direction of separating from the holding fitting hole 41 of the unlocking piece 42 synchronously. When the distance that the pressing piece 51 moves upward from the upper surface of the charging end plate 23 is defined as S1, the holding fitting piece 53 just separates from the holding fitting hole 41 of the unlocking piece 42. At this time, the unlocking holding state of the unlocking mechanism 4 is released, the unlocking piece 42 is automatically reset, and the locking piece 31 restores the locking function. If the distance between the locking point of the locking piece 31 and the upper surface of the charging end plate 23 is defined as S2 in the locked state, there should be no locking point on the battery 1 within the range of S1 to S2 from the bottom surface of the battery 1, i.e. no tooth part 11 is arranged in the length range of the battery 1 corresponding to the bottom surface S1 to S2 in the axial direction, so as to ensure that the battery 1 can be reliably taken out. The above structure makes the locking piece 31 pop back after the tooth part 11 of the battery 1 moves completely above the locking piece 31, effectively ensures the one-key unlocking function and the reset of each component after the battery 1 separates from the charging rack 2, including the reset of the locking mechanism 3, the unlocking mechanism 4 and the unlocking holding mechanism 5, and the above structure is completely matched with the moving stroke of the pressing piece 51 and the battery 1, so as to ensure that the locking mechanism 3 is long-term stable and reliable.

[0054] The above specific embodiments are used to explain and illustrate the present application, rather than limit the present application. Any modification and change made to the present application within the spirit and protection scope of the present application and the claims, falls into the protection scope of the present application.

Claims

1. A battery charging device, characterized by, The application relates to a battery (1) with a toothed portion (11) extending along the axial direction of the battery (1), a charging rack (2) with a mounting channel (22) formed by a support (21), a charging end plate (23) at the end of the mounting channel (22), a battery locking mechanism (3), an unlocking mechanism (4), and an unlocking holding mechanism (5) arranged on the charging end plate (23). The battery locking mechanism (3) comprises a locking member (31) rotatably connected to the charging rack (2) and a first elastic member (32) abutting against the locking member (31). The unlocking holding mechanism (5) comprises a pressing member (51), a pushing member (52) arranged in linkage with the pressing member (51), and a holding matching member (53), and the unlocking mechanism (4) has an unlocking holding state capable of locking the holding matching member (53). When the battery (1) is inserted into the mounting channel (22), the toothed portion (11) and the locking member (31) are locked in engagement, and the pressing member (51) is triggered to move in a first direction to drive the pushing member (52) to move in a second direction, so that the holding matching member (53) abuts against the unlocking mechanism (4). An external force is applied to drive the unlocking mechanism (4) to move along the direction of the mounting channel (22), so as to drive the locking member (31) to disengage from the toothed portion (11), and the unlocking mechanism (4) enters the unlocking holding state, so that the unlocking mechanism (4) is kept in the state of driving the locking member (31) to disengage from the toothed portion (11), and the battery (1) can be separated from the charging rack (2). The unlocking mechanism (4) forms a holding matching hole (41), and a part of the holding matching member (53) extends into the holding matching hole (41) to limit the position of the holding matching member (53), so that the unlocking mechanism (4) enters the unlocking holding state. The unlocking mechanism (4) comprises an unlocking member (42) and an unlocking push rod (43) connected to the unlocking member (42), the unlocking member (42) has an inclined driving surface (421), the locking member (31) forms a bevel surface (311) abutting against the inclined driving surface (421), an external force is applied to the unlocking push rod (43) to drive the unlocking member (42) to move downward along the mounting channel (22), the inclined driving surface (421) and the bevel surface (311) drive the locking member (31) to flip in a direction away from the battery (1), the bevel surface (311) drives the unlocking member (42) to automatically move upward along the mounting channel (22) when the unlocking mechanism (4) is separated from the unlocking holding state, or the bevel surface (311) and a second elastic member (44) drive the unlocking member (42) to automatically move upward along the mounting channel (22).

2. The battery charging apparatus of claim 1, wherein: ​ 3. The battery charging device according to claim 1 or 2, characterized by: ​ 4. The battery charging apparatus of claim 2, wherein: The holding fitting (53) comprises a fixed part (531) and a telescopic part (532), the fixed part (531) is sleeved with a third elastic member (533), and the telescopic part (532) can be contracted into the fixed part (531); when the holding fitting (53) abuts against the unlocking mechanism (4), it is dislocated with the holding fitting hole (41), the telescopic part (532) is contracted into the fixed part (531); when the telescopic part (532) extends into the holding fitting hole (41), the holding fitting (53) is locked and limited with the holding fitting hole (41), and the third elastic member (533) is in a compressed state.

5. The battery charging apparatus of claim 4, wherein: The charging end plate (23) forms a mounting groove (231), the pushing member (52) moves in the mounting groove (231), and the telescopic part (532) penetrates the side wall of the mounting groove (231) and cooperates with the unlocking member (42).

6. The battery charging apparatus of claim 4, wherein: When the lower pressing member (51) is translated upward by a distance S1, the unlocking holding state is released; when the battery (1) and the locking member (31) are locked, the distance between the locking point of the battery tooth part (11) and the upper surface of the charging end plate (23) is S2, and the tooth part (11) is not arranged in the length range corresponding to the bottom surface S1 to S2 of the battery (1) in the axial direction.

7. The battery charging apparatus of claim 1, wherein: The lower pressing member (51) abuts against the fourth elastic member (511), and the fourth elastic member (511) is used for providing a tendency of the lower pressing member (51) moving in the direction protruding from the charging end plate (23).

8. The battery charging apparatus of claim 3, wherein: The unlocking member (42) is in a U shape, the closed end of the unlocking member (42) forms an inclined driving surface (421), and the locking member (31) is arranged below the unlocking member (42) and has a top surface forming an inclined surface (311).

9. The battery charging apparatus of claim 8, wherein: The closed end of the unlocking member (42) forms a cutting part (422) towards the side of the battery (1), and the two sides of the unlocking member (42) form extension protrusions (423) which can abut against the second elastic member (44).

10. The battery charging apparatus of claim 8, wherein: The charging rack (2) forms a guide sliding groove (211) cooperating with the two sides of the unlocking member (42), and the guide sliding groove (211) extends along the length direction of the mounting channel (22), so that the unlocking member (42) moves up and down along the mounting channel (22).

11. The battery charging apparatus of claim 1, wherein: The bracket (21) movably arranges a ball (214), and when the battery (1) is inserted into the mounting channel (22), the outer wall thereof rolls and cooperates with the ball (214); the ball (214) abuts against a rebounding member; and the first direction and the second direction are perpendicular to each other.

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