WO2021197495A1

WO2021197495A1 - Charging device, charging assembly, and battery replacement station

Info

Publication number: WO2021197495A1
Application number: PCT/CN2021/085664
Authority: WO
Inventors: 张建平; 黄春华
Original assignee: 奥动新能源汽车科技有限公司
Priority date: 2020-04-03
Filing date: 2021-04-06
Publication date: 2021-10-07
Also published as: CN113492698A

Abstract

Disclosed in the present invention are a charging device, a charging assembly and a battery replacement station. The charging device comprises: a floating disk, the floating disk being configured to bear a battery pack and moving a first displacement in a first floating direction under the action of the gravity of the battery pack; an electrical connector configured to form an electrical connection with the battery pack so as to charge and discharge the battery pack; and a linkage mechanism, the linkage mechanism being connected to the floating disk and the electrical connector, and when the floating disk generates the first displacement in the first floating direction, the linkage mechanism driving the electrical connector to move a second displacement in a direction close to the battery pack. In the present invention, the direction of the electrical connector may be any direction. The linkage mechanism is linked by means of the change in the bearing of the floating disk, so that the electrical connector can respond in time and interface with the battery pack. The power for movement of the electrical connector is derived from the gravity of the battery pack, which does not require external driving, and facilitates simplification of an internal structure of the charging device.

Description

Charging device, charging assembly and switching station

This application claims the priority of the Chinese patent application CN2020102605555 whose filing date is April 3, 2020. This application quotes the full text of the aforementioned Chinese patent application.

Technical field

The invention relates to a charging device, a charging assembly and a switching station.

Background technique

With social development and technological progress, electric vehicles are becoming more and more popular with consumers. As the power source of electric vehicles, battery boxes need to be charged in time. Due to the mileage and power requirements, the battery box power required by the car is getting higher and higher. The traditional charging method cannot meet the needs of the car in some scenarios. The battery box needs to be replaced and placed on the charging rack for charging, so that the vehicle can be charged during the charging time. use.

The charging rack is equipped with an electrical connection plug that matches the electrical connection socket on the battery pack. When unloading the battery pack on the electric vehicle and placing it on the charging rack for charging, you need to connect the electrical connection plug on the charging rack and the battery pack In the prior art, an external drive mechanism is generally used to drive the electrical connection plug to the electrical connection socket on the battery pack to achieve the docking. This leads to complicated equipment connection in the charging rack, high cost, and need Provide additional power to drive the electrical connection plug to move.

In addition, the electrical connection plugs on the existing electric vehicles are generally arranged on the side of the space where the battery box is placed in the vehicle to meet the stability of the electrical connection during the driving of the vehicle. If the electrical connection plugs in the charging rack are also provided On the side, the battery box needs to be rotated as a whole to achieve electrical plugging. For a battery box with a larger volume, the battery box will take up a lot of space and be cumbersome to operate during the rotation of the battery box.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the poor adaptability of the charging device in the prior art and the inability to connect battery packs with different charging port directions, resulting in the cumbersome defect of adjusting the position of the battery pack, and provides a charging device, a charging assembly and a replacement station .

The present invention solves the above technical problems through the following technical solutions:

A charging device, characterized in that the charging device includes:

A floating disk, the floating disk is used to carry the battery pack, and moves a first displacement in a first floating direction under the gravity of the battery pack;

An electrical connector used to form an electrical connection with the battery pack to charge and discharge the battery pack;

A linkage mechanism, the linkage mechanism is respectively connected with the floating plate and the electrical connector, when the floating plate generates a first displacement along the first floating direction, the linkage mechanism drives the electrical connection The battery pack is moved by the second displacement along the direction close to the battery pack, so that the electrical connector and the battery pack are electrically connected.

This solution uses the gravity of the battery pack to move the floating plate. A linkage mechanism is set between the floating plate and the electrical connector to drive the electrical connector to move in the direction of the battery pack to form an electrical connection, that is, the battery pack’s own gravity is used. In order to be electrically connected, no additional power is required to drive the electrical connector to move, and this linkage mode can be applied to electrical connections in various orientations of the battery pack.

Preferably, the first floating direction is a vertical downward direction, the floating plate receives the battery pack in the vertical direction, and the floating plate moves toward the first floating direction following the gravity of the battery pack Produce displacement.

The first floating direction is vertical downwards, that is, the gravity of the battery pack can be completely applied to the floating plate, so that the floating plate can drive the movement of the linkage mechanism in a more timely manner.

Preferably, the second displacement is greater than the first displacement. The distance between the electrical connector and the floating plate needs to change with different states.

When the battery pack is moved in, the electrical connector must be spaced from the battery pack to avoid interference; after the battery pack is moved in, the electrical connector contacts and charges the battery pack. Therefore, the second displacement is greater than the first displacement, so that the electrical connector gradually approaches the battery pack during the moving process of the battery pack, avoiding interference during movement.

Preferably, the direction of the second displacement is a vertical downward direction, the electrical connector is arranged above the floating plate, and the linkage mechanism is arranged to link in a vertical downward direction.

Therefore, the direction of the charging port of the battery pack is completely perpendicular to the moving-in direction of the battery pack. Since the charging port of the battery pack is horizontally oriented when matching the charging vehicle, the battery pack only needs to be turned over 90 degrees between the electric vehicle and the charging device, which can significantly simplify the battery exchange process and enable the battery exchange equipment to be small Complete the steering of the battery pack within the space.

Preferably, the floating plate is connected with a floating reset element, and the floating reset element is used to drive the floating plate to reset in a second floating direction when there is no gravity of the battery pack. The second floating direction is the same as the first floating direction. on the contrary.

After the battery pack is removed, the floating reset element provides active restoring force to make the floating disk return to its original position to prepare the subsequent battery pack for charging.

Preferably, the floating reset element is an elastic element. When the battery pack is carried on the floating plate, the elastic element deforms in the first floating direction and generates an elastic restoring force toward the second floating direction.

Preferably, the electrical connector is connected with a charge reset element, and the charge reset element is used to drive the electrical connector to reset when the weight of the battery pack is not applied.

After the battery pack is removed, the charging reset element provides active restoring force to make the floating disk return to its original position to prepare the subsequent battery pack for charging.

The floating reset element and the charging reset element can be provided at the same time, so that the electrical connector and the floating disk can be reset regardless of the linkage mechanism.

In some linkage mechanisms, such as connecting rods, only one of the floating reset element and the charging reset element needs to be provided, and the reset of any one of the electrical connector and the floating disk will drive the other to reset.

Preferably, the charge reset element is an elastic element, and when the battery pack is carried on the floating plate, the elastic element deforms in the direction of the second displacement, and produces a direction opposite to the second displacement. Elastic deformation force.

Preferably, the charging device further includes a guiding mechanism for guiding the electrical connector to move in the direction of the battery pack under the action of the linkage mechanism to achieve electrical connection.

The guiding mechanism can guide the moving direction of the electrical connector, so that the electrical connector can move toward or away from the battery pack according to a fixed track.

Preferably, the guide mechanism includes a slider and a guide rail, wherein the slider or the guide rail is fixed on the electrical connector, and is slidably connected to the guide rail or the slider that is relatively fixed.

The slider moves along a fixed track on the guide rail. The sliding block can be arranged on the electrical connector to move together with the electrical connector, or can be set at a relatively fixed position to guide the electrical connector to move.

Preferably, the electrical connector includes a connecting seat and a charging head, the charging head is arranged on the connecting seat, wherein the connecting seat is connected to the linkage mechanism, and the charging head is used to connect to the charging port of the battery pack .

Preferably, a floating element is provided between the connection base and the charging head to realize a floating electrical connection between the electrical connector and the battery pack.

The floating element realizes the floating displacement of the charging head. Therefore, even if there is an error during the docking process with the charging port of the battery pack, the error can be corrected by the floating displacement of the charging head.

Preferably, the floating element is an elastic element, a receiving cavity for accommodating a charging head is provided in the connecting seat, and the charging head is arranged in the receiving cavity through the elastic element.

The elastic element can buffer the movement of the charging head through its own compression and extension. One end of the elastic element can press against the charging head, and the other end against the inner side wall of the accommodating cavity, so that the movement of the charging head relative to the inner side wall of the accommodating cavity can be realized smoothly.

Preferably, a positioning pin is further provided on the charging head, and the positioning pin is used for butting with a positioning hole provided on the battery pack.

Preferably, the charging device further includes a slider and a guide rail, and the electrical connector further includes a base on which the slider or the guide rail is fixed, and is connected to the guide rail or the guide rail or The sliding block is slidably connected, and the connecting seat extends in a direction away from the sliding block and the guide rail.

Preferably, the linkage mechanism includes a sliding mechanism, a first traction member, and a second traction member. The first traction member is respectively connected to the sliding mechanism and the floating plate, and the second traction member is electrically connected to the electrical connector and the mounting seat. The actuator is installed on the mounting seat and moves relative to the mounting seat, and the second traction member is slidably connected with the sliding mechanism.

This constitutes the structure of the movable pulley. Wherein, the moving distance of the second traction member is twice that of the first traction member, thereby realizing that the second displacement is greater than the first displacement.

A charging assembly is characterized in that the charging assembly includes the charging device.

A swap station, characterized in that the swap station includes:

Car-carrying platform, used for power-supply vehicles to park for battery pack replacement;

The charging assembly is used to place the battery pack, including the charging device;

The battery swapping equipment is used to pick and place and transfer the battery between the electric vehicle and each charging compartment of the charging assembly.

The positive progress effect of the present invention is that the movable electrical connector of the present invention does not need to be the same as the conveying direction of the battery pack, and the orientation of the electrical connector can be any direction. Among them, the linkage mechanism generates linkage through changes in the load of the floating disk, so that the electrical connector can respond in time and be docked with the battery pack. The power for the movement of the electrical connector comes from the gravity of the battery pack and does not require external driving, which is beneficial to simplify the internal structure of the charging device.

Description of the drawings

Fig. 1 is a schematic structural diagram of a charging assembly according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the arrangement of charging devices according to a preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of the overall structure of a charging device according to a preferred embodiment of the present invention.

4 is a schematic diagram of the upper structure of the charging device according to the preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a side structure of a charging device according to a preferred embodiment of the present invention.

Fig. 6 is a schematic diagram of the bottom structure of the electrical connector according to the preferred embodiment of the present invention.

Fig. 7 is a schematic diagram of the structure of a switching station according to a preferred embodiment of the present invention.

Detailed ways

The present invention will be further described by way of examples below, but the present invention is not limited to the scope of the described examples.

As shown in FIGS. 1-7, this embodiment discloses a charging assembly 2. As shown in FIGS. 1 and 2, the charging assembly 2 includes a charging compartment A. A charging device 20 is installed in each charging compartment A. As shown in FIG. 3, the charging device 20 of this embodiment includes a floating disk 21. The floating disk 21 is used to carry the battery pack 4 and moves toward a first floating direction V for a first displacement under the gravity of the battery pack 4. In this embodiment, the floating disk 21 may be a flat structure, a frame structure, or other structural members that can be used to support the battery pack and float in the first direction. The charging assembly 2 also includes a fixed disk 28, which is arranged under the floating disk 21, It is used to support and carry the floating disk 21. The charging warehouse A is composed of a charging rack, and the charging rack is composed of multiple horizontal and longitudinal beams. The floating disk 21 can also be directly installed on the charging rack.

As shown in FIG. 3, the charging device 20 of this embodiment further includes an electrical connector 22 for forming an electrical connection with the battery pack 4 to charge and discharge the battery pack 4. In this embodiment, the electrical connector 22 is arranged above the floating disk 21 in the charging compartment A, and can be electrically connected to the battery pack 4 in the vertical direction to charge and discharge the battery pack. The electrical connector 22 can directly With the mounting seat on the beam of the charging rack, the electrical connector 22 includes a charging head 221 and a terminal (not shown in the figure, but can actually be located on the top or side of the electrical connector 22). The charging head 221 is used to connect to the battery. The charging port of the pack 4 forms an electrical connection, and the terminal is used to connect an external charging module to charge the battery pack 4.

As shown in FIG. 3, the charging device 20 of this embodiment further includes a linkage mechanism 23, which is respectively connected to the floating disk 21 and the electrical connector 22, and generates a first displacement in the floating disk 21 along the first floating direction V. At this time, the linkage mechanism 23 drives the electrical connector 22 to move for a second displacement along the direction close to the battery pack 4, so that the electrical connector 22 and the battery pack 4 form an electrical connection.

In this embodiment, the gravity of the battery pack 4 is used to move the floating disk 21. A linkage mechanism 23 is provided between the floating disk 21 and the electrical connector 22 to drive the electrical connector 22 to move in the direction of the battery pack 4 to form an electrical connection. That is, the electric connection is realized by the self-gravity of the battery pack 4, and no additional power is required to drive the electric connector 22 to move, and this linkage method can be applied to the electric connection of the battery pack 4 in various orientations.

The electrical connector 22 of the present invention is linked to the battery pack 4 through the linkage mechanism 23, and is no longer a fixed electrical connector 22. Therefore, the mobile electrical connector 22 does not need to be in the same direction as the battery pack 4, and the electrical The orientation of the connector 22 may be any orientation. Wherein, the linkage mechanism 23 generates linkage through the change in the load of the floating plate 21, so that the electrical connector 22 can respond in time and be docked with the battery pack 4. The power for the movement of the electrical connector 22 comes from the gravity of the battery pack 4 and does not require external driving, which is beneficial to simplify the internal structure of the charging device 20.

In this embodiment, the first floating direction V is a vertical downward direction. The floating disk 21 receives the battery pack 4 in the vertical direction as shown in FIG. The floating direction V produces displacement. The first floating direction V is vertical downward, that is, the gravity of the battery pack 4 can be completely applied to the floating plate 21, so that the floating plate 21 can drive the movement of the linkage mechanism 23 in a more timely manner.

In this embodiment, the floating disk 21 can float in the vertical direction. Specifically, the floating disk 21 is installed in the charging compartment. In this embodiment, the floating disk 21 is installed on the fixed disk 28 and can be installed in the battery pack. 4 moves in the vertical direction under the action of gravity. It can be a spring, a rubber pad, or other elastic members that can withstand the gravity compression of the battery pack and restore deformation after the battery pack 4 is withdrawn. In other embodiments, the floating disk 21 can also be directly installed on the transverse beam of the charging rack to achieve floating load.

In this embodiment, the second displacement is greater than the first displacement. When the battery pack 4 enters the charging compartment, the bottom of the battery pack is higher than the surface of the floating plate. Therefore, the distance between the electrical connector 22 and the surface of the floating plate 21 must be greater than the height of the battery pack 4 to avoid interference; therefore, the battery pack 4 After being placed on the floating plate 21, the moving distance of the electrical connector 22 must be greater than the moving distance of the floating plate to realize the electrical connection between the electrical connector 22 and the battery pack 4.

As shown in FIG. 3, the second displacement direction of this embodiment is a vertical downward direction, the electrical connector 22 is arranged above the floating plate 21, and the linkage mechanism 23 is arranged between the electrical connector 22 and the floating plate 21, The electrical connector 21 is driven to move downward in the vertical direction. In this embodiment, when the battery pack 4 enters the charging compartment A, the charging port faces upwards. In order to achieve electrical connection, the electrical connector with the charging head 221 downwardly arranged through the linkage mechanism is moved downward in the vertical direction, that is, the second displacement The direction is vertical downward to realize the electrical connection between the electrical connector and the battery pack. When the battery pack 4 is installed on an electric vehicle, the battery pack 4 and the electrical connector 22 on the electric vehicle are generally electrically plugged in a horizontal direction. The electrical plug in the horizontal direction is suitable for the driving process of the electric vehicle, especially for the vehicle. In the case of severe shaking, in order to provide a reliable and stable electrical connection, when the battery pack 4 on the electric vehicle is unloaded and connected to the electrical connector located in the horizontal direction inside the charging compartment to realize charging and discharging, the battery pack needs to be charged and discharged. Rotate 180 degrees horizontally to connect the electrical connector in the charging compartment. For a larger battery pack, it needs to take up a larger battery replacement space, which is not suitable for a small battery replacement area. The electrical connector 22 above the floating disk can be charged and discharged only by turning the battery pack 4 90 degrees in the vertical direction, without occupying a large battery replacement space. At the same time, the gravity of the battery pack 4 is used to realize the battery pack 4 and the electricity. The electrical connection between the connectors 22 eliminates the need for additional driving mechanisms. The electrical connection between the two can be achieved by placing the battery pack in place on the floating plate, eliminating the need for alignment between the electrical connector and the battery pack. Complicated operation, higher charging docking efficiency and lower charging cost.

In other embodiments, the electrical connector 22 can also be adaptively arranged on the side or bottom surface of the charging compartment to adapt to the situation where the socket ends of the battery pack 4 placed in the charging compartment A are oriented differently. Specifically, the linkage mechanism 23 in this embodiment can be used, and only the setting position of the electrical connector 22 needs to be adjusted, and the electrical connector 22 is moved in a direction toward the battery under the action of the gravity of the battery pack 4.

As shown in FIG. 3, the floating disk 21 of this embodiment is connected with a floating reset element 26. The floating reset element 26 is used to drive the floating disk 21 to reset in the second floating direction when the weight of the battery pack 4 is not applied. It is opposite to the first floating direction V. After the battery pack 4 is removed, the floating reset element 26 provides an active restoring force to make the floating disk 21 return to its original position to prepare the subsequent battery pack 4 for charging. The floating reset element 26 in this embodiment can be the same element as the aforementioned elastic member, or can be set as different elements. By setting the floating reset element 26, in the process of taking out the battery pack 4 from the floating plate 21, the floating reset element 26 acts on the floating plate 21 to move upward in the vertical direction to reset, thereby driving the electrical connector 22 and the battery pack 4 to achieve electrical The connection is separated, no additional driving mechanism is required to separate the electrical connector from the battery pack. At the same time, the electrical connection can be separated during the process of taking the battery pack, which improves the efficiency of picking and placing the battery pack, thereby improving the overall efficiency of battery replacement . As shown in FIG. 3, the floating reset element 26 of this embodiment is an elastic element. When the battery pack 4 is carried on the floating plate 21, the elastic element deforms in the first floating direction V and generates an elastic recovery toward the second floating direction. force. Specifically, the floating reset element 26 can be a spring or the like that can be elastically deformed under the action of an external force and can be restored to deformation after the external force is removed. The two ends of the floating reset element are respectively connected to the floating disk 21 and the fixed disk 28, or floating reset The two ends of the element 26 are respectively connected to the horizontal and longitudinal beams on the floating disk and the charging rack.

As shown in FIGS. 3 and 4, the electrical connector 22 of the present embodiment is connected with a charge reset element 27, which is used to drive the electrical connector 22 to reset when the weight of the battery pack 4 is not applied.

The charge reset element 27 can be set between the electrical connector 22 and the mounting base 24, or between the electrical connector 22 and the horizontal beam on the charging rack. By setting the charge reset element 27, during the process of taking out the battery pack, The floating disk 21 no longer exerts downward force on the electrical connector 22, and the electrical connector 22 moves upward under the action of the charge reset element 27 to return to its original position, so that the subsequent battery pack 4 can be inserted.

As shown in Figures 3 and 4, the floating reset element 26 and the charge reset element 27 of this embodiment can be provided at the same time, so that the electrical connector 22 and the floating disk 21 can be reset regardless of the linkage mechanism 23. . In the case of some linkage mechanisms 23, such as connecting rods, only one of the floating reset element 26 and the charging reset element 27 needs to be provided, and the reset of any one of the electrical connector 22 and the floating disk 21 will drive the other to reset.

As shown in Figures 3 and 4, the charge resetting element 27 of this embodiment is an elastic element. When the battery pack 4 is carried on the floating plate 21, the elastic element deforms in the direction of the second displacement and generates an opposite direction to the second displacement. The elastic deformation force in the direction. Specifically, the charging reset element 27 may be a spring or the like that can be elastically deformed under the action of an external force and can be restored to deformation after the external force is removed.

As shown in Fig. 5, the charging device 20 of this embodiment further includes a guide mechanism for guiding the electrical connector 22 to move in the direction of the battery pack 4 under the action of the linkage mechanism 23 to achieve electrical connection. The guiding mechanism can guide the moving direction of the electrical connector 22.

As shown in FIG. 5, the guiding mechanism of this embodiment includes a slider 252 and a guide rail 251, wherein a slider 252 or a guide rail 251 is fixed on the electrical connector 22, and is slidably connected with a relatively fixed guide rail 251 or a slider 252 . As shown in FIGS. 3 and 5, the electrical connector 22 of this embodiment includes a connecting seat 222 and a charging head 221. The charging head 221 is disposed on the connecting seat 222. The connecting seat 222 is connected to the linkage mechanism 23, and the charging head 221 Used to connect with the charging port of the battery pack 4.

As shown in FIG. 5 and FIG. 6, a floating element 223 is provided between the connecting base 222 and the charging head 221 in this embodiment to realize a floating electrical connection between the electrical connector 22 and the battery pack 4. The floating element 223 realizes the floating displacement of the charging head 221. Therefore, even if there is an error during the docking process with the charging port of the battery pack 4, the error can be corrected by the floating displacement of the charging head 221.

As shown in FIGS. 5 and 6, the floating element 223 of this embodiment is an elastic element, and a receiving cavity for accommodating the charging head 221 is provided in the connecting seat 222, and the charging head 221 is arranged in the receiving cavity through the elastic element.

As shown in FIGS. 5 and 6, the charging head 221 of this embodiment is further provided with a positioning pin 220, and the positioning pin 220 is used for docking with a positioning hole provided on the battery pack 4.

As shown in Figures 4 and 5, the charging device 20 of this embodiment further includes a slider 252 and a guide rail 251. The electrical connector 22 also includes a base 224 on which the slider 252 or the guide rail 251 is fixed, and is connected to the Correspondingly provided guide rails 251 or sliders 252 are slidably connected, and the connecting seat 222 extends in a direction away from the sliders 252 and the guide rails 251.

As shown in FIG. 3, the linkage mechanism 23 of this embodiment includes a sliding mechanism 233, a first traction member 231, and a second traction member 232. The first traction member 231 is respectively connected to the sliding mechanism 233 and the floating plate 21, and the second traction member 232 is respectively connected to the electrical connector 22 and the mounting base 24. The electrical connector 22 is mounted on the mounting base 24 and moves relative to the mounting base 24, and the second traction member 232 is slidably connected to the sliding mechanism 233. This constitutes the structure of the movable pulley.

The first traction member 231 and the second traction member 232 may be steel ropes, belts and other structures. The sliding mechanism 233 may be a structure such as a pulley or a slider. The second traction member 232 slides under the sliding mechanism 233, wherein the second traction member 232 not only slides relative to the sliding mechanism 233, but also moves up and down along with the sliding mechanism 233. The first traction member 231 is directly fixed on the sliding mechanism 233, and therefore moves together with respect to the sliding mechanism 233. Therefore, no matter which direction it moves, the moving distance of the second traction member 232 includes the sliding distance relative to the sliding mechanism 233 and the distance moving along with the sliding mechanism 233, while the first traction member 231 only includes moving with the sliding mechanism 233. Therefore, the moving distance of the second traction member 232 is twice that of the first traction member 231. At the same time, one end of the second traction member 232 is connected to the mounting seat 24 to keep it fixed and not moving. Therefore, the electrical connector 22 connected to the other end of the second traction member 232 achieves twice the movement relative to the first traction member 231. Distance, thereby realizing that the second displacement is greater than the first displacement.

As shown in Fig. 7, this embodiment also discloses a swap station. The swap station includes a vehicle-carrying platform for powering electric vehicles 3 to park to replace the battery pack 4; the charging assembly 2 is used to place the battery pack 4 , Including a charging device 20; a battery swapping device 1, used for picking, placing, and transferring batteries between the electric vehicle 3 and each charging bin A of the charging assembly 2.

The movable electrical connector of the present invention does not need to be the same as the conveying direction of the battery pack, and the orientation of the electrical connector can be any orientation. Among them, the linkage mechanism generates linkage through changes in the load of the floating disk, so that the electrical connector can respond in time and be docked with the battery pack. The power for the movement of the electrical connector comes from the gravity of the battery pack and does not require external driving, which is beneficial to simplify the internal structure of the charging device.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and various changes or modifications can be made to these embodiments without departing from the principle and essence of the present invention. Revise. Therefore, the protection scope of the present invention is defined by the appended claims.

Claims

A charging device, characterized in that the charging device comprises:

A floating disk, the floating disk is used to carry the battery pack, and moves a first displacement in a first floating direction under the gravity of the battery pack;

An electrical connector used to form an electrical connection with the battery pack to charge and discharge the battery pack;

A linkage mechanism, the linkage mechanism is respectively connected with the floating plate and the electrical connector, when the floating plate generates a first displacement along the first floating direction, the linkage mechanism drives the electrical connection The battery pack is moved by the second displacement along the direction close to the battery pack, so that the electrical connector and the battery pack are electrically connected.
The charging device according to claim 1, wherein the first floating direction is a vertical downward direction, the floating disk receives the battery pack in the vertical direction, and the floating disk follows the battery The gravity of the bag produces displacement in the first floating direction.
3. The charging device of claim 2, wherein the second displacement is greater than the first displacement.
The charging device according to at least one of claims 1 to 3, wherein the direction of the second displacement is a vertical downward direction, the electrical connector is arranged above the floating plate, and the The linkage mechanism is arranged to be linked in a vertical downward direction.
The charging device according to at least one of claims 1-4, wherein the floating plate is connected with a floating reset element, and the floating reset element is used to move in the second floating direction when there is no gravity of the battery pack. The floating disk is driven to reset, and the second floating direction is opposite to the first floating direction.
The charging device according to claim 5, wherein the floating reset element is an elastic element, and when the battery pack is carried on the floating plate, the elastic element deforms in the first floating direction and faces the The elastic restoring force in the second floating direction.
The charging device according to at least one of claims 1-6, wherein the electrical connector is connected with a charge reset element, and the charge reset element is used to drive the battery when there is no gravity on the battery pack. The connector faces reset.
The charging device according to claim 7, wherein the charging reset element is an elastic element, and when the battery pack is carried on the floating plate, the elastic element deforms in the direction of the second displacement, and generates a The elastic deformation force in the direction opposite to the second displacement.
The charging device according to at least one of claims 1-8, wherein the charging device further comprises a guiding mechanism for guiding the electrical connector toward the direction of the battery pack under the action of the linkage mechanism Move to achieve electrical connection.
The charging device according to claim 9, wherein the guide mechanism comprises a sliding block and a guide rail, wherein the sliding block or the guide rail is fixed on the electrical connector, and is connected to a fixedly arranged position on the electric connector. The guide rail or the sliding block is slidably connected.
The charging device according to at least one of claims 1-10, wherein the electrical connector includes a connecting seat and a charging head, and the charging head is arranged on the connecting seat, wherein the connecting seat and the linkage The mechanism is connected, and the charging head is used to connect with the charging port of the battery pack.
The charging device according to claim 11, wherein a floating element is provided between the connecting base and the charging head to realize a floating electrical connection between the electrical connector and the battery pack.
The charging device according to claim 12, wherein the floating element is an elastic element, a receiving cavity for accommodating a charging head is provided in the connecting seat, and the charging head is arranged in the receiving cavity through the elastic element.
The charging device according to at least one of claims 11-13, wherein a positioning pin is further provided on the charging head, and the positioning pin is used for docking with a positioning hole provided on the battery pack.
The charging device according to at least one of claims 11-14, wherein the charging device further comprises a slider and a guide rail, the electrical connector further comprises a base, and the base is fixed with the The sliding block or the guide rail is slidably connected to the correspondingly provided guide rail or the sliding block, and the connecting seat extends in a direction away from the sliding block and the guide rail.
The charging device according to at least one of claims 1-15, wherein the linkage mechanism comprises a sliding mechanism, a first traction member, and a second traction member, and the first traction member is respectively connected to the sliding mechanism and the floating plate , The second traction member is respectively connected with the electrical connector and the mounting seat. The electrical connector is mounted on the mounting seat and moves relative to the mounting seat, and the second traction member is slidably connected with the sliding mechanism.
A charging assembly, characterized in that the charging assembly comprises the charging device according to at least one of claims 1-16.
A swap station, characterized in that, the swap station includes:

Car-carrying platform, used for power-supply vehicles to park for battery pack replacement;

A charging assembly for placing a battery pack, including the charging device according to at least one of claims 1-16;

The battery swapping equipment is used to pick and place and transfer the battery between the electric vehicle and each charging compartment of the charging assembly.