Floating connecting device, charging rack and battery changing vehicle

Abstract

The utility model discloses a floating connecting device, a charging rack and a battery changing vehicle, the floating connecting device comprises a base, a moving unit, a connecting mechanism and a first floating unit, the connecting mechanism is connected with the first floating unit, and the connecting mechanism is provided with a connector which can be plugged with a battery pack. The moving unit is used for driving the first floating unit to move on the base in the vertical direction so that the connector can be connected with the battery pack in an inserted mode, and the first floating unit at least drives the connecting mechanism to float in the moving direction. By the adoption of the mode, the moving unit drives the first floating unit to move in the extending direction of the moving unit, so that the first floating unit drives the connector to move in the direction close to or away from the battery pack, and plugging of the connector and the battery pack is achieved. In the plugging process of the connector and the battery pack, the floating of the first floating unit prevents the connector or the battery pack from being damaged due to hard contact generated in the plugging process of the floating connecting device and the battery pack, and the service life of the floating connecting device and the battery pack is prolonged.

Description

Technical Field

[0001] The utility model relates to a floating connection device, a charging rack and a battery swapping vehicle. Background Art

[0002] At present, electric vehicles mainly include two types: direct charging type and quick battery swapping type. Due to the limitations of charging time and location, many new energy electric vehicles gradually adopt the mode of quickly replacing the battery pack for energy supply. Specifically, in the mode of quickly replacing the battery pack, the depleted battery pack needs to be replaced and placed on the charging rack, the electrical connector is inserted into the battery pack to charge the battery pack, and the fully charged battery is replaced onto the electric vehicle, and the electric vehicle is also provided with energy by inserting the electrical connector into the battery pack. In order to meet the endurance requirements of users for electric vehicles, the electric energy of the battery packs equipped on electric vehicles increases accordingly, resulting in a significant increase in the heat released during the charging and discharging processes of such battery packs. Therefore, a liquid cooling system is designed on such battery packs to control the temperature of the battery packs. Correspondingly, liquid cooling connectors are designed on both the charging rack and the electric vehicle, which can be inserted into the battery pack to achieve docking with the liquid cooling system. However, during the insertion process of the liquid cooling connector or the electrical connector into the battery pack, hard contact occurs between the liquid cooling connector or the electrical connector and the battery pack, resulting in impacts, which may cause damage to the battery pack, the liquid cooling connector or the electrical connector, affecting their service life. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defect that during the insertion process of the liquid cooling connector or the electrical connector into the battery pack in the prior art, hard contact occurs between the liquid cooling connector or the electrical connector and the battery pack, resulting in impacts, which may cause damage to the battery pack, the liquid cooling connector or the electrical connector, affecting their service life, and to provide a floating connection device, a charging rack and a battery swapping vehicle.

[0004] The utility model solves the above technical problem through the following technical solutions:

[0005] The utility model discloses a floating connection device, which includes a base, a moving unit, a connecting mechanism and a first floating unit. The connecting mechanism is connected to the first floating unit. The connecting mechanism has a connector capable of being inserted into the battery pack. The moving unit is used to drive the first floating unit to move vertically on the base so that the connector is inserted into the battery pack. The first floating unit at least drives the connecting mechanism to float in its moving direction.

[0006] In this solution, the above-mentioned structural form is adopted, and the moving unit drives the first floating unit to move in the vertical direction, so that the first floating unit can drive the connector to move in the vertical direction to approach or move away from the battery pack to achieve the plugging and unplugging of the connector and the battery pack. Firstly, under such a setting, the connector only needs to move in the vertical direction, which makes the overall structure of the floating connection device simple, and the docking with the battery pack is also simple and easy, which can improve the reliability of the docking; secondly, during the plugging and unplugging process of the connector and the battery pack, the first floating unit can float in the moving direction, avoiding the hard contact between the floating connection device and the battery pack during the plugging and unplugging process, which may cause damage to the connector or the battery pack, thereby improving the service life of both.

[0007] Preferably, the first floating unit includes a first fixed plate, a first floating plate and a first elastic member arranged between the first fixed plate and the first floating plate, the first fixed plate is connected to the movable unit, the connecting mechanism is arranged on a side of the first floating plate away from the first elastic member, and the first elastic member is arranged to extend in a vertical direction and have a corresponding elastic force direction.

[0008] In the present solution, the above-mentioned structural form is adopted, and the first fixed plate is connected to the moving unit, so that the moving unit can drive the first fixed plate to move in the vertical direction, so that the connector can be driven by the first fixed plate to move in the direction close to or away from the battery pack to achieve the plugging and unplugging of the connector and the battery pack. In addition, the first elastic member is arranged between the first fixed plate and the first floating plate, and the elastic force direction of the first elastic member is in the vertical direction, so that the first floating plate can move in the direction close to or away from the first fixed plate in the vertical direction. In other words, the first floating plate is floated in the moving direction by the first fixed plate and the first elastic member, so that the connector on the connecting mechanism can be driven to float in the moving direction, thereby avoiding hard contact between the floating connecting device and the battery pack during the plugging and unplugging process, which causes damage to the connector or the battery pack, and improves the service life of both.

[0009] Preferably, the first elastic member is a rubber sleeve, the first floating unit further comprises a first connecting member for connecting the first fixed plate and the first floating plate, and the rubber sleeve is located between the first fixed plate and the first floating plate and sleeved on the first connecting member.

[0010] In this solution, the first connecting member realizes the connection between the first fixed plate and the first floating plate. With the above structural form, since the elastic modulus of the rubber sleeve is small, a large elastic deformation can be obtained. Therefore, the rubber sleeve is arranged between the first floating plate and the first fixed plate, which increases the floating range of the first floating plate in the vertical direction, thereby increasing the floating range of the connector in the vertical direction. In addition, the rubber sleeve is sleeved on the first connecting member, which can avoid interference between the rubber sleeve and the first connecting member, improve the working stability of the rubber sleeve and the first connecting member, and the above structural form improves the structural compactness of the first floating unit.

[0011] Preferably, the first fixed plate and the first floating plate respectively have a first connection hole and a second connection hole for the first connecting member to pass through. The diameters of the first connection hole and the second connection hole are both smaller than the diameter of the rubber sleeve and larger than the diameter of the first connecting member. First fixing members and second fixing members are respectively provided at both ends of the first connecting member to prevent the first connecting member from detaching from the first fixed plate and the first floating plate. Spherical washers are respectively provided between the first fixing member and the first fixed plate and between the second fixing member and the first floating plate, so that the first floating plate can float relative to the first fixed plate in multiple directions.

[0012] In this solution, the first connection hole and the second connection hole facilitate the passing of the first connecting member through the first fixed plate and the first floating plate, so as to facilitate the connection of the first connecting member to the first fixed plate and the first floating plate respectively. In addition, the diameters of the first connection hole and the second connection hole are both smaller than the diameter of the rubber sleeve, which can prevent the rubber sleeve from being stuck in the first connection hole and / or the second connection hole and affecting the compression amount and stretching amount of the rubber sleeve in the vertical direction, thus facilitating the floating of the connector in the vertical direction. In addition, with the above structural form, the spherical washer can compensate for the deviation that occurs during the alignment of the floating connection device and the battery pack, improve the accuracy of the floating connection device and the battery pack during the alignment process, and thus improve the alignment efficiency of the floating connection device and the battery pack.

[0013] Preferably, the connector includes an electrical connection head and / or a liquid cooling connection head. The connection mechanism further includes a mounting plate and a third elastic member. Both ends of the third elastic member are respectively connected to the mounting plate and the first floating plate. The electrical connection head and / or the liquid cooling connection head is arranged on the mounting plate; or, one end of the third elastic member is connected to the electrical connection head and / or the liquid cooling connection head, and the other end is connected to the mounting plate, and the mounting plate is connected to the first floating plate.

[0014] In this solution, adopting the above structural form, both ends of the third elastic member are respectively connected to the mounting plate and the first floating plate, enabling the mounting plate to move closer to or away from the first floating plate in the vertical direction, thereby driving the electrical connector and / or the liquid cooling connector to float in the moving direction. Alternatively, one end of the third elastic member is connected to the electrical connector and / or the liquid cooling connector, and the other end is connected to the mounting plate, while the mounting plate is connected to the first floating plate, enabling the electrical connector and / or the electrical connector to float relative to the mounting plate in the vertical direction. Adopting the above structural form further avoids hard contact between the floating connection device and the battery pack during the plugging and unplugging process, which may cause damage to the connector or the battery pack, and improves the service life of both.

[0015] Preferably, the floating connection device further includes a second floating unit, which is arranged between the connection mechanism and the first floating unit, and the second floating unit drives at least the connection mechanism to float in its moving direction.

[0016] In this solution, the second floating unit can float in the moving direction, further increasing the floating amount of the connection mechanism, thus further avoiding hard contact between the connection mechanism and the battery pack during the plugging and unplugging process, which may cause damage to the connector or the battery pack, and improving the service life of both. That is, adopting the above structural form, both the first floating unit and the second floating unit can drive the connector to float in the vertical direction, thereby increasing the floating range of the connector in the vertical direction.

[0017] Preferably, the second floating unit includes a second floating plate and a second elastic member. The second elastic member is arranged between the first floating plate and the second floating plate. The connection mechanism is connected to the side of the second floating plate facing away from the second elastic member. The second elastic member is arranged in a staggered manner with the first elastic member and extends along the vertical direction with a corresponding elastic force direction.

[0018] In this solution, the second elastic member is arranged between the first floating plate and the second floating plate, and the elastic force direction of the second elastic member is the vertical direction, enabling the second floating plate to move closer to or away from the first floating plate in the vertical direction. In other words, through the first floating plate and the second elastic member, the floating of the second floating plate in the moving direction is realized, thereby driving the connector on the connection mechanism to be able to float in the moving direction, further avoiding hard contact between the floating connection device and the battery pack during the plugging and unplugging process, which may cause damage to the connector or the battery pack, and improving the service life of both. In addition, adopting the above structural form, the second elastic member and the first elastic member are arranged in a staggered manner, which can prevent interference when the second elastic member and the first elastic member are connected, and improves the stability and reliability of the connection between the first elastic member and the second elastic member.

[0019] Preferably, the second elastic member is a spring. The second floating unit further includes a second connecting member for connecting the second floating plate and the first floating plate. The spring is located between the second floating plate and the first floating plate and sleeved on the second connecting member.

[0020] In this solution, the second connecting member realizes the connection between the first floating plate and the second floating plate. With the above structural form, the elastic deformation of the spring enables the second floating plate to float in the vertical direction, so that the connector can float in the vertical direction. In addition, the spring is sleeved on the second connecting member, which can avoid interference between the spring and the second connecting member, improve the working stability of the spring and the second connecting member, and the above structural form improves the structural compactness of the second floating unit.

[0021] Preferably, the connector includes an electrical connector and / or a liquid cooling connector. The connecting mechanism further includes a mounting plate and a third elastic member. Two ends of the third elastic member are respectively connected to the mounting plate and the second floating plate. The electrical connector and / or the liquid cooling connector is arranged on the mounting plate; or, one end of the third elastic member is connected to the electrical connector and / or the liquid cooling connector, and the other end is connected to the mounting plate. The mounting plate is connected to the second floating plate.

[0022] In this solution, two ends of the third elastic member are respectively connected to the mounting plate and the second floating plate, enabling the mounting plate to move closer to or away from the second floating plate in the vertical direction, so as to drive the electrical connector and / or the liquid cooling connector to float in the moving direction. Or, one end of the third elastic member is connected to the electrical connector and / or the liquid cooling connector, and the other end is connected to the mounting plate, and the mounting plate is connected to the second floating plate, enabling the electrical connector and / or the electrical connector to float relative to the mounting plate in the vertical direction. With the above structural form, it is avoided that the floating connection device and the battery pack have hard contact during the plugging and unplugging process, resulting in damage to the connector or the battery pack, and the service life of both is improved.

[0023] Preferably, the moving unit includes a sliding member and a guide rail that slidably cooperates with the sliding member. One of the sliding member and the guide rail is arranged on the base, and the other is connected to the first floating unit.

[0024] In this solution, with the above structural form, the sliding member and the guide rail cooperate to provide guidance for the movement of the first floating unit, while improving the stability and reliability of the movement of the moving plate; in addition, the cooperation between the sliding member and the guide rail also reduces the movement friction of the moving plate.

[0025] Preferably, the mobile unit further includes a sliding plate, the sliding member is fixed to one side of the sliding plate, the other side of the sliding plate is connected to the first floating unit, and the floating connection device further includes a detection unit for detecting the position of the sliding plate to determine the connection state of the connector.

[0026] In this solution, the connection between the sliding member and the first floating unit is realized through the sliding plate. In addition, with the above structural form, the detection unit can accurately determine whether the connector is connected to the battery pack, avoiding problems such as incorrect connection or incomplete connection, and improving the accuracy of the connection between the connector and the battery pack.

[0027] Preferably, the detection unit includes an induction member and a matching member, one of the induction member and the matching member is arranged on the base, and the other is arranged on the sliding plate;

[0028] Preferably, the induction member includes two induction members, and the two induction members are respectively arranged at both ends of the base in the vertical direction to respectively correspond to the front in-place and the rear in-place. When the sliding plate moves in the vertical direction and drives the matching member to the front in-place or the rear in-place, the first floating unit is controlled not to move forward or backward further.

[0029] In this solution, with the above structural form, when the induction member at the front in-place senses the matching member, it means that the sliding plate drives the connection mechanism to move to the position where it docks with the battery pack and the docking with the battery pack has been achieved; when the induction member at the rear in-place senses the matching member, it means that the sliding plate drives the connection mechanism to move to the position where it disengages from the battery pack and has reached a position where it will not interfere with the entry and exit of the battery pack. Thus, the setting of the induction member and the matching member can effectively control the movement amount of the sliding plate and meet the requirements of docking with the battery pack and facilitating the entry and exit of the battery pack, improving the reliability of docking with the battery pack and the safety of the entry and exit of the battery pack.

[0030] The present utility model also discloses a charging rack, which includes the floating connection device as described in any one of the above, so as to be connected to the battery pack through the floating connection device.

[0031] In this solution, the floating connection device is applied to the charging rack. With the above structural form, the mobile unit drives the first floating unit to move in its extending direction, so that the first floating unit can drive the connector to move in the direction of approaching or departing from the battery pack to realize the plugging and unplugging of the connector and the battery pack. During the plugging and unplugging process of the connector and the battery pack, the first floating unit can float in the moving direction, avoiding hard contact between the floating connection device and the battery pack during the plugging and unplugging process, which may cause damage to the connector or the battery pack, and improving the service life of both.

[0032] The present utility model further discloses a battery swapping vehicle, which includes a battery pack for plugging into the floating connection device as described above to achieve charging and discharging of the battery pack.

[0033] In this solution, the floating connection device on the battery swapping vehicle is plugged into the battery pack installed on the battery swapping vehicle, enabling the battery pack to supply electrical energy to the battery swapping vehicle. With the above structural form, the moving unit drives the first floating unit to move in its extending direction, causing the first floating unit to drive the connector to move towards or away from the battery pack to achieve plugging and unplugging of the connector and the battery pack. During the plugging and unplugging process of the connector and the battery pack, the first floating unit can float in the moving direction, avoiding hard contact between the floating connection device and the battery pack during plugging and unplugging, which may cause damage to the connector or the battery pack, and improving the service life of both.

[0034] The positive and progressive effects of the present utility model are as follows:

[0035] The moving unit drives the first floating unit to move in the vertical direction, causing the first floating unit to drive the connector to move vertically towards or away from the battery pack to achieve plugging and unplugging of the connector and the battery pack. First, with such a setting, the connector only needs to move in one direction, namely the vertical direction, making the overall structure of the floating connection device simple, and the docking with the battery pack is also simple and easy, which can improve the reliability of docking. Second, during the plugging and unplugging process of the connector and the battery pack, the first floating unit can float in the moving direction, avoiding hard contact between the floating connection device and the battery pack during plugging and unplugging, which may cause damage to the connector or the battery pack, and improving the service life of both. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Structural schematic diagrams of the liquid-cooled floating connection devices in Embodiment 1 and Embodiment 2 of the present utility model.

[0037] Figure 2 Partial structural schematic diagrams of the liquid-cooled floating connection devices in Embodiment 1 and Embodiment 2 of the present utility model.

[0038] Figure 3 Cross-sectional schematic diagrams of the liquid-cooled floating connection devices in Embodiment 1 and Embodiment 2 of the present utility model.

[0039] Figure 4 Schematic diagrams of the liquid-cooled floating connection devices in Embodiment 1 and Embodiment 2 of the present utility model.

[0040] Figure 5 Structural schematic diagram of the electric floating connection device in Embodiment 1 of the present utility model.

[0041] Figure 6Schematic diagram of the electric floating connection device of Embodiment 1 of the present utility model.

[0042] Figure 7 Partial schematic diagram of the electric floating connection device of Embodiment 1 of the present utility model.

[0043] Figure 8 Schematic diagram of the structure of the charging rack of Embodiment 3 of the present utility model.

[0044] Figure 9 Partial structural schematic diagram of the charging rack of Embodiment 3 of the present utility model.

[0045] Explanation of reference numerals:

[0046] Charging rack 1000

[0047] Battery pack 2000

[0048] Floating connection device 1

[0049] Electric floating connection device 100

[0050] Liquid-cooled floating connection device 200

[0051] Base 11

[0052] Moving unit 12

[0053] Slider 121

[0054] Guide rail 122

[0055] Slide plate 123

[0056] Connection mechanism 13

[0057] Mounting plate 131

[0058] Third elastic member 132

[0059] First floating unit 14

[0060] First fixing plate 141

[0061] First connection hole 1411

[0062] First weight-reducing hole 1412

[0063] First floating plate 142

[0064] Second connection hole 1421

[0065] Second weight-reducing hole 1422

[0066] First elastic member 143

[0067] First connecting member 144

[0068] The first fixing member 145

[0069] The second fixing member 146

[0070] The spherical gasket 147

[0071] The connector 15

[0072] The electrical connection head 151

[0073] The liquid cooling connection head 152

[0074] The second floating unit 16

[0075] The second floating plate 161

[0076] The second elastic member 162

[0077] The second connecting member 163

[0078] The third weight reduction hole 164

[0079] The detection unit 17

[0080] The sensing member 171

[0081] The matching member 172 Specific embodiments

[0082] The present utility model will be further described below by way of embodiments, but the present utility model is not limited thereto.

[0083] Embodiment 1

[0084] Such as Figures 5 to 7As shown in the figure, this embodiment provides a floating connection device 1. The floating connection device 1 includes a base 11, a moving unit 12, a connection mechanism 13, and a first floating unit 14. The connection mechanism 13 is connected to the first floating unit 14. The connection mechanism 13 has a connector 15 that can be plugged into the battery pack. The moving unit 12 is used to drive the first floating unit 14 to move vertically on the base 11 so that the connector 15 is plugged into the battery pack. The first floating unit 14 at least drives the connection mechanism 13 to float in its moving direction. Specifically, when the battery pack needs to be charged or discharged, the floating connection device 1 needs to be plugged into the battery pack. At this time, the first floating unit 14 can move vertically through the moving unit 12 to approach the battery pack, and finally the connector 15 on the connection mechanism 13 is plugged into the connector (not shown in the figure) on the battery pack. During the plugging process, the first floating unit 14 can float in the moving direction, avoiding hard contact between the floating connection device 1 and the battery pack during the plugging process, which may cause damage to the connector 15 or the battery pack, and improving the service life of both. When the battery pack is fully charged, the floating connection device 1 is detached from the battery pack. At this time, the first floating unit 14 can move away from the battery pack through the moving unit 12, and finally the connector 15 on the connection structure is detached from the connector 15 on the battery pack. In addition, with such a setting, the connector 15 only needs to move in one direction, namely the vertical direction, making the overall structure of the floating connection device 1 simple. At the same time, the docking with the battery pack is also simple and easy, which can improve the reliability of the docking.

[0085] As Figures 5 to 7As shown, the first floating unit 14 includes a first fixed plate 141, a first floating plate 142 and a first elastic member 143 disposed between the first fixed plate 141 and the first floating plate 142. The first fixed plate 141 is connected to the mobile unit 12. The connecting mechanism 13 is disposed on the side of the first floating plate 142 away from the first elastic member 143. The first elastic member 143 is configured to extend in the vertical direction and have a corresponding elastic force direction. With the above-mentioned structural form, the first fixed plate 141 is connected to the mobile unit 12, so that the mobile unit 12 can drive the first fixed plate 141 to move in the vertical direction, so that the connector 15 can be driven by the first fixed plate 141 to move in the direction close to or away from the battery pack, so as to achieve the plugging and unplugging of the connector 15 and the battery pack. In addition, the first elastic member 143 is disposed between the first fixed plate 141 and the first floating plate 142, and the elastic force direction of the first elastic member 143 is the vertical direction, so that the first floating plate 142 can move in the direction close to or away from the first fixed plate 141 in the vertical direction. In other words, the first floating plate 142 is floated in the moving direction through the first fixed plate 141 and the first elastic member 143, so that the connector 15 on the connecting mechanism 13 can be floated in the moving direction, thereby avoiding hard contact between the floating connecting device 1 and the battery pack during the plugging and unplugging process, which may cause damage to the connector 15 or the battery pack, thereby improving the service life of both.

[0086] It should be specifically stated that, Figure 7 As shown, in this embodiment, a weight-reducing hole is opened on the first fixing plate 141 , which is helpful to reduce the weight of the first floating unit 14 , and further helps to reduce the weight of the floating connection device 1 .

[0087] like Figures 1 to 7 As shown, the first elastic member 143 is a rubber sleeve, and the first floating unit 14 further includes a first connecting member 144 for connecting the first fixed plate 141 and the first floating plate 142. The rubber sleeve is located between the first fixed plate 141 and the first floating plate 142 and is sleeved on the first connecting member 144. Specifically, the first connecting member 144 realizes the connection between the first fixed plate 141 and the first floating plate 142. With the above structure, since the elastic modulus of the rubber sleeve is small, a large elastic deformation can be obtained. Therefore, the rubber sleeve is arranged between the first floating plate 142 and the first fixed plate 141, which increases the floating range of the first floating plate 142 in the vertical direction, thereby increasing the floating range of the connector 15 in the vertical direction. In addition, the rubber sleeve is sleeved on the first connecting member 144, which can avoid interference between the rubber sleeve and the first connecting member 144, improve the working stability of the rubber sleeve and the first connecting member 144, and the above structure improves the compactness of the structure of the first floating unit 14.

[0088] like Figure 6and Figure 7 As shown in Figure 7 , the first fixed plate 141 and the first floating plate 142 are respectively provided with a first connection hole 1411 and a second connection hole 1421 for the first connecting member 144 to pass through. The diameters of the first connection hole 1411 and the second connection hole 1421 are both smaller than the diameter of the rubber sleeve and larger than the diameter of the first connecting member 144. Both ends of the first connecting member 144 are respectively provided with a first fixing member 145 and a second fixing member 146 to prevent the first connecting member 144 from detaching from the first fixed plate 141 and the first floating plate 142. Spherical washers 147 are respectively provided between the first fixing member 145 and the first fixed plate 141 and between the second fixing member 146 and the first floating plate 142, so that the first floating plate 142 can float relative to the first fixed plate 141 in multiple directions. Specifically, the first connection hole 1411 and the second connection hole 1421 facilitate the passing of the first connecting member 144 through the first fixed plate 141 and the first floating plate 142, so as to facilitate the connection of the first connecting member 144 with the first fixed plate 141 and the first floating plate 142 respectively. In addition, the diameters of the first connection hole 1411 and the second connection hole 1421 are both smaller than the diameter of the rubber sleeve, which can prevent the rubber sleeve from being stuck in the first connection hole 1411 and / or the second connection hole 1421 and affecting the compression amount and stretching amount of the rubber sleeve in the vertical direction, thereby being beneficial to the floating of the connector 15 in the vertical direction. In addition, adopting the above structural form, the spherical washer 147 can make up for the deviation that occurs when the floating connection device 1 and the battery pack are aligned, improving the accuracy of the floating connection device 1 and the battery pack during the alignment process, and further improving the alignment efficiency of the floating connection device 1 and the battery pack.

[0089] It should be specifically noted that one side of the spherical washer 147 is provided with a groove, and the other side is provided with a protrusion, and the groove and the protrusion correspond to each other. For the spherical washer 147 provided between the second fixing member 146 and the first floating plate 142, the edge of the groove abuts against one of the second fixing member 146 and the first floating plate 142, and the bottom of the protrusion abuts against the other. The same is true for the spherical washer 147 provided between the first fixing member 145 and the first fixed plate 141. Adopting the above structural form enables the spherical washer 147 to adapt to the floating of the first floating plate 142 in all directions. In other words, in this embodiment, through the rubber sleeve, the first floating plate 142 can drive the connector 15 to float at least in the vertical direction; through the shape and the setting position of the spherical washer 147, the floating of the first floating plate 142 in all directions in the plane where the first floating plate 142 is located and in the vertical plane is realized, thereby increasing the floating range of the first floating plate 142, and further being able to make up for the deviation that occurs when the floating connection device 1 and the battery pack are aligned, and improving the accuracy of the floating connection device 1 and the battery pack during the alignment process.

[0090] As Figures 5 to 7As shown, for the connector 15, there can be the following implementation manners. In the first implementation manner, the connector 15 includes an electrical connection head 151. In the second implementation manner, the connector 15 includes a liquid-cooled connection head 152. In the third implementation manner, the connector 15 includes an electrical connection head 151 and a liquid-cooled connection head 152. In this embodiment, the connector 15 includes an electrical connection head 151 and a liquid-cooled connection head 152. In other embodiments, the specific inclusion form of the connector 15 may not be limited.

[0091] As Figures 1 to 4 the liquid-cooled connection head 152 is provided on the connection mechanism 13 in Figures 5 to 7 and the electrical connection head 151 is provided on the connection mechanism 13 in Figures 1 to 4 They can be replaced with each other, or another one can be added beside one of them, which is understandable to those skilled in the art. Therefore, in this application, only two forms are provided exemplarily. Further, referring to Figures 1 to 4 to understand the structure of the connection mechanism 13 part, the connection mechanism 13 further includes a mounting plate 131 and a third elastic member 132. The two ends of the third elastic member 132 are respectively connected to the mounting plate 131 and the first floating plate 142. Only the electrical connection head 151 can be provided on the mounting plate 131, only the liquid-cooled connection head 152 can be provided on the mounting plate 131, or both the electrical connection head 151 and the liquid-cooled connection head 152 can be provided on the mounting plate 131. For the connection of the electrical connection head 151 and the liquid-cooled connection head 152, the following implementation manners can also be adopted. In the first implementation manner, the electrical connection head 151 is connected to the mounting plate 131 through the third elastic member 132, and the mounting plate 131 is connected to the first floating plate 142. In the second implementation manner, the liquid-cooled connection head 152 is connected to the mounting plate 131 through the third elastic member 132, and the mounting plate 131 is connected to the first floating plate 142. In the third implementation manner, both the electrical connection head 151 and the liquid-cooled connection head 152 are connected to the mounting plate 131 by using the third elastic member 132, and the mounting plate 131 is connected to the first floating plate 142.

[0092] When in specific use, as Figures 5 to 7The shown electric floating connection device 100 has both ends of a third elastic member (not shown in the figure) connected to an electric connection head 151 and a mounting plate 131 respectively, and the mounting plate 131 is connected to a first floating plate 142. When the number of the first floating plates 142 and the first elastic members 143 is multiple, the first floating plates 142 and the first elastic members 143 are connected one by one. In this embodiment, both the number of the first elastic members 143 and the first floating plates 142 is four, and the four first elastic members 143 are arranged around the first mounting plate 131, thereby improving the stability and reliability of the connection between the first fixing plate 141 and the first floating plate 142, and further improving the stability and reliability of the first floating plate 142 floating in the vertical direction, which is beneficial to the stability and reliability of the electric connection head 151 floating in the vertical direction. Of course, as described above, the electric connection head 151 in this embodiment can be directly replaced with a liquid cooling connection head 152. In other embodiments, the electric connection head 151 and the liquid cooling connection head 152 can also adopt other connection methods, which are not limited herein.

[0093] In addition, in this embodiment, in order to improve the compactness of the structure of the electric floating connection device 100 and the service life of the third elastic member (not shown in the figure), it is preferably that an opening accommodating cavity is formed inside the mounting plate 131, the third elastic member is arranged in the accommodating cavity, and the electric connection head 151 is connected to the third elastic member in the accommodating cavity through the opening.

[0094] As Figures 1 to 7 shown, the moving unit 12 includes a sliding member 121 and a guide rail 122 that slidably cooperates with the sliding member 121. One of the sliding member 121 and the guide rail 122 is arranged on the base 11, and the other is connected to the first floating unit 14. Specifically, a receiving cavity is formed on one side of the sliding member 121 facing the guide rail 122, the guide rail 122 is accommodated in the receiving cavity, and the guide rail 122 is slidably connected to the inner wall surface of the receiving cavity, which improves the compactness of the structure of the moving unit 12. With the above structural form, the sliding member 121 and the guide rail 122 cooperate to provide guidance for the movement of the first floating unit 14 while improving the stability and reliability of the movement of the sliding member 121; in addition, the cooperation between the sliding member 121 and the guide rail 122 also reduces the friction force of the movement of the sliding member 121.

[0095] In this embodiment, the sliding member 121 is connected to the first floating unit 14, and the guide rail 122 is connected to the base 11. In other embodiments, it can also be that the sliding member 121 is connected to the base 11 and the guide rail 122 is connected to the first floating unit 14. In addition, in this embodiment, the number of the sliding members 121 and the guide rails 122 is two, the two sliding members 121 and the two guide rails 122 are in one-to-one correspondence and cooperation, and the two sliding members 121 are symmetrically arranged in the length direction of the first floating unit 14.

[0096] Please refer to Figures 1 to 7For understanding, the moving unit 12 further includes a sliding plate 123. The sliding member 121 is fixed to one side of the sliding plate 123, and the other side of the sliding plate 123 is connected to the first floating unit 14. The floating connection device 1 further includes a detection unit 17, and the detection unit 17 is used to detect the position of the sliding plate 123 to determine the connection state of the connector 15. Specifically, the connection between the sliding member 121 and the first floating unit 14 is realized through the sliding plate 123. In addition, with the above structural form, through the detection unit 17, it can be accurately determined whether the connector 15 is connected to the battery pack, avoiding problems such as incorrect connection or incomplete connection, and improving the accuracy of the insertion of the connector 15 into the battery pack.

[0097] In this embodiment, the sliding plate 123 extends along the length direction of the first floating unit 14, and the two sliding members 121 are symmetrically arranged in the extending direction of the sliding member 121.

[0098] As Figures 1 to 7 shown, the detection unit 17 includes an induction member 171 and a matching member 172. One of the induction member 171 and the matching member 172 is arranged on the base 11, and the other is arranged on the sliding plate 123. In this embodiment, the induction member 171 includes two induction members 171, and the two induction members 171 are respectively arranged at both ends of the base 11 in the vertical direction to respectively correspond to the front in-place and the rear in-place, and the matching member 172 is correspondingly arranged on the sliding plate 123. When the sliding plate 123 moves in the vertical direction and drives the matching member 172 to the front in-place or the rear in-place, it controls the first floating unit 14 not to move further forward or backward. With the above structural form, when the induction member for the front in-place senses the matching member 172, it means that the sliding plate 123 drives the connection mechanism 13 to move to the position where it docks with the battery pack and has achieved docking with the battery pack. When the induction member for the rear in-place senses the matching member 172, it means that the sliding plate 123 drives the connection mechanism 13 to move to the position where it disengages from the battery pack and has reached a position where it will not interfere with the entry and exit of the battery pack. Thus, the setting of the induction member 171 and the matching member 172 can effectively control the movement amount of the sliding plate 123 and meet the requirements of docking with the battery pack and facilitating the entry and exit of the battery pack, improving the reliability of docking with the battery pack and the safety of the entry and exit of the battery pack.

[0099] It should be specifically noted that in actual use, the front in-place corresponds to the position where the connector 15 on the floating connection device 1 is inserted in place with the connector on the battery pack; the rear in-place corresponds to the position where the connector 15 on the floating connection device 1 is disengaged in place from the connector 15 on the battery pack. In other embodiments, the settings of the front in-place and the rear in-place can be adjusted according to actual needs, and no specific limitations are made on the front in-place and the rear in-place here.

[0100] Embodiment 2

[0101] This embodiment provides a floating connection device 1. Please refer toFigures 1 to 4 It is understood that the structure of this embodiment is basically the same as that of Embodiment 1, except that the floating connection device 1 further includes a second floating unit 16. The second floating unit 16 is disposed between the connection mechanism 13 and the first floating unit 14, and the second floating unit 16 at least drives the connection mechanism 13 to float in its moving direction. Specifically, the second floating unit 16 can float in the moving direction, further increasing the floating amount of the connection mechanism 13, thereby further avoiding hard contact between the connection mechanism 13 and the battery pack during the plugging and unplugging process, which may cause damage to the connector 15 or the battery pack, and improving the service life of both. That is, with the above structural form, both the first floating unit 14 and the second floating unit 16 can drive the connector 15 to float in the vertical direction, thereby increasing the floating range of the connector 15 in the vertical direction.

[0102] As Figure 1 and Figure 2 shown, in this embodiment, the second floating unit 16 includes a second floating plate 161 and a second elastic member 162. The second elastic member 162 is disposed between the first floating plate 142 and the second floating plate 161. On the side of the second floating plate 161 facing away from the second elastic member 162, a connection mechanism 13 is connected. The second elastic member 162 is disposed in a staggered manner with the first elastic member 143 and extends in the vertical direction and has a corresponding elastic force direction. Specifically, the second elastic member 162 is disposed between the first floating plate 142 and the second floating plate 161, and the elastic force direction of the second elastic member 162 is in the vertical direction, so that the second floating plate 161 can move in the vertical direction towards or away from the first floating plate 142. In other words, through the first floating plate 142 and the second elastic member 162, the floating of the second floating plate 161 in the moving direction is realized, so that the connector 15 on the connection mechanism 13 can be floated in the moving direction, thereby avoiding hard contact between the floating connection device 1 and the battery pack during the plugging and unplugging process, which may cause damage to the connector 15 or the battery pack, and improving the service life of both. In addition, with the above structural form, the second elastic member 162 and the first elastic member 143 are disposed in a staggered manner, which can prevent interference when the second elastic member 162 and the first elastic member 143 are connected, and improves the stability and reliability of the connection between the first elastic member 143 and the second elastic member 162.

[0103] The second elastic member 162 is a spring. The second floating unit 16 further includes a second connecting member 163 for connecting the second floating plate 161 and the first floating plate 142. The spring is located between the second floating plate 161 and the first floating plate 142 and sleeved on the second connecting member 163. Specifically, the second connecting member 163 realizes the connection between the first floating plate 142 and the second floating plate 161. With the above structural form, the elastic deformation of the spring enables the second floating plate 161 to float in the vertical direction, so that the connector 15 can float in the vertical direction. In addition, the spring is sleeved on the second connecting member 163, which can avoid interference between the spring and the second connecting member 163, improve the working stability of the spring and the second connecting member 163, and the above structural form improves the structural compactness of the second floating unit 16.

[0104] It should be specifically noted that, as Figure 2 shown, in this embodiment, third weight-reducing holes 164 are respectively formed in the second floating plate 161, which is beneficial to reducing the weight of the second floating unit 16, and further beneficial to reducing the weight of the floating connection device 1.

[0105] Correspondingly, as Figure 2 and Figure 4 shown, in this embodiment, first weight-reducing holes 1412 and second weight-reducing holes 1422 are respectively formed in the first fixing plate 141 and the first floating plate 142, which is beneficial to reducing the weight of the first floating unit 14, and further beneficial to reducing the weight of the floating connection device 1.

[0106] In addition, in this embodiment, in addition to deforming in the elastic force direction, the spring can also deform slightly in other directions, such as deforming and floating in each direction in a plane perpendicular to the vertical direction, so that the second floating plate 161 can float in multiple directions, improving the floating range of the second floating plate 161.

[0107] Similarly, the connector 15 has several implementation manners the same as those in Embodiment 1, such as Figures 1 to 4As shown, the connecting mechanism 13 further includes a mounting plate 131 and a third elastic member 132. The two ends of the third elastic member 132 are respectively connected to the mounting plate 131 and the second floating plate 161. Only an electrical connection head 151 can be provided on the mounting plate 131, only a liquid cooling connection head 152 can be provided on the mounting plate 131, or both an electrical connection head 151 and a liquid cooling connection head 152 can be provided on the mounting plate 131. For the connection of the electrical connection head 151 and the liquid cooling connection head 152, the following implementation manners can also be adopted. In the first implementation manner, the electrical connection head 151 is connected to the mounting plate 131 through the third elastic member 132, and the mounting plate 131 is connected to the second floating plate 161. In the second implementation manner, the liquid cooling connection head 152 is connected to the mounting plate 131 through the third elastic member 132, and the mounting plate 131 is connected to the second floating plate 161. In the third implementation manner, both the electrical connection head 151 and the liquid cooling connection head 152 are connected to the mounting plate 131 by using the third elastic member 132, and the mounting plate 131 is connected to the second floating plate 161.

[0108] In specific use, for the liquid cooling connection device 200, as Figures 1 to 4 shown, the two ends of the third elastic member 132 are respectively connected to the mounting plate 131 and the second floating plate 161, and a liquid cooling connection head 152 is provided on the mounting plate 131, so that the mounting plate 131 can move closer to or away from the second floating plate 161 in the vertical direction, thereby driving the liquid cooling connection head 152 to float in the vertical direction. Of course, as described above, the liquid cooling connection head 152 in this embodiment can be directly replaced with an electrical connection head 151. In other embodiments, other connection manners can also be adopted for the electrical connection head 151 and the liquid cooling connection head 152, which are not limited herein.

[0109] Embodiment 3

[0110] As Figure 8 and Figure 9 shown, this embodiment discloses a charging rack 1000, and the charging rack 1000 includes the floating connection device 1 in Embodiment 1 or 2. Specifically, the floating connection device 1 is applied to the charging rack 1000, so that the moving unit 12 drives the first floating unit 14 to move in its extending direction, so that the first floating unit 14 can drive the connector 15 to move closer to or away from the battery pack 2000 to realize the plugging and unplugging of the connector 15 and the battery pack 2000. During the plugging and unplugging process of the connector 15 and the battery pack 2000, the first floating unit 14 can float in the moving direction, avoiding hard contact between the floating connection device 1 and the battery pack 2000 during the plugging and unplugging process, resulting in damage to the connector 15 or the battery pack 2000, and improving the service life of both.

[0111] In this embodiment, please refer to Figure 8 and Figure 9For understanding, the charging rack 1000 has a plurality of charging bins arranged at intervals in the vertical direction. Each floating connection device 1 in each charging bin includes an electrical floating connection device 100 and a liquid-cooling floating connection device 200. The electrical floating connection device 100 and the liquid-cooling floating connection device 200 are respectively docked with the battery pack 2000 in the corresponding charging bin for electrical connection and liquid-cooling connection. Among them, the electrical connection can realize the charging and discharging of the battery pack 2000, and the liquid-cooling connection is to realize the temperature adjustment of the battery pack 2000.

[0112] As Figure 8 and Figure 9 shown, the electrical floating connection device 100 and the liquid-cooling floating connection device 200 are respectively arranged at both ends of the charging bin along the length or width direction of the charging bin, so as to facilitate their respective docking with the battery pack 2000. Of course, in other embodiments, the installation positions of the electrical floating connection device 100 and the liquid-cooling floating connection device 200 can be adjusted according to actual needs and are not limited herein.

[0113] In this embodiment, the electrical floating connection device 100 includes an electrical connection mechanism, a first floating unit, a moving mechanism, and a base. The electrical connection mechanism is connected and installed on the first floating plate of the first floating unit. In other embodiments, based on the actual need to further increase the requirement of the floating amount, the electrical floating connection device 100 may further include a second floating unit, and the electrical connection mechanism is installed on the second floating plate of the second floating unit.

[0114] Furthermore, in this embodiment, the liquid-cooling connection device 200 includes a liquid-cooling connection mechanism, a first floating unit, a second floating unit, a moving mechanism, and a base. The liquid-cooling connection mechanism is connected and installed on the second floating plate of the second floating unit. In other embodiments, based on the actual need to reduce the requirement of part of the floating amount, the liquid-cooling floating connection device does not include the second floating unit, that is, the liquid-cooling connection mechanism is directly installed on the first floating plate of the first floating unit.

[0115] Embodiment 4

[0116] This embodiment provides a battery swapping vehicle. The battery swapping vehicle includes a battery pack, and the battery pack is used to be plugged into the floating connection device 1 in Embodiment 1 or 2. Similar to Embodiment 3, in this embodiment, the floating connection device 1 also includes an electrical floating connection device and a liquid-cooling connection device, which are respectively docked with the battery pack installed on the battery swapping vehicle. The structures and installation positions of the electrical floating connection device and the liquid-cooling connection device are the same as those of the electrical floating connection device and the liquid-cooling connection device in the same charging bin in Embodiment 3, so they will not be elaborated herein.

[0117] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A floating connection device, characterized in that: The floating connection device includes a base, a moving unit, a connecting mechanism and a first floating unit. The connecting mechanism is connected to the first floating unit. The connecting mechanism has a connector that can be plugged into a battery pack. The moving unit is used to drive the first floating unit to move in a vertical direction on the base so that the connector is plugged into the battery pack. The first floating unit at least drives the connecting mechanism to float in its moving direction.

2. The floating connection device according to claim 1, characterized in that: The first floating unit includes a first fixed plate, a first floating plate and a first elastic member arranged between the first fixed plate and the first floating plate, the first fixed plate is connected to the moving unit, the connecting mechanism is arranged on a side of the first floating plate away from the first elastic member, and the first elastic member is arranged to extend in a vertical direction and has a corresponding elastic force direction.

3. The floating connection device according to claim 2, characterized in that: The first elastic member is a rubber sleeve, and the first floating unit further comprises a first connecting member for connecting the first fixed plate and the first floating plate, wherein the rubber sleeve is located between the first fixed plate and the first floating plate and is sleeved on the first connecting member; preferably, the first fixed plate and the first floating plate respectively have a first connecting hole and a second connecting hole for the first connecting member to pass through, and the apertures of the first connecting hole and the second connecting hole are both smaller than the diameter of the rubber sleeve and larger than the diameter of the first connecting member; a first fixing member and a second fixing member are respectively arranged at both ends of the first connecting member to prevent the first connecting member from being separated from the first fixed plate and the first floating plate, and spherical gaskets are respectively arranged between the first fixing member and the first fixed plate and between the second fixing member and the first floating plate so that the first floating plate can float in multiple directions relative to the first fixed plate; And / or, the connector includes an electrical connector and / or a liquid-cooling connector, the connecting mechanism also includes a mounting plate and a third elastic member, both ends of the third elastic member are respectively connected to the mounting plate and the first floating plate, and the electrical connector and / or the liquid-cooling connector are arranged on the mounting plate; or, one end of the third elastic member is connected to the electrical connector and / or the liquid-cooling connector, and the other end is connected to the mounting plate, and the mounting plate is connected to the first floating plate.

4. The floating connection device according to claim 2, characterized in that: The floating connection device further comprises a second floating unit, which is arranged between the connection mechanism and the first floating unit, and the second floating unit at least drives the connection mechanism to float in its moving direction.

5. The floating connection device according to claim 4, characterized in that: The second floating unit includes a second floating plate and a second elastic member, the second elastic member is arranged between the first floating plate and the second floating plate, the side of the second floating plate facing away from the second elastic member is connected to the connecting mechanism, the second elastic member is staggered with the first elastic member, extends along the vertical direction and has a corresponding elastic force direction.

6. The floating connection device according to claim 5, characterized in that: The second elastic member is a spring, and the second floating unit further includes a second connecting member for connecting the second floating plate and the first floating plate, and the spring is located between the second floating plate and the first floating plate and is sleeved on the second connecting member; And / or, the connector includes an electrical connector and / or a liquid-cooling connector, the connecting mechanism also includes a mounting plate and a third elastic member, both ends of the third elastic member are respectively connected to the mounting plate and the second floating plate, and the electrical connector and / or the liquid-cooling connector are arranged on the mounting plate; or, one end of the third elastic member is connected to the electrical connector and / or the liquid-cooling connector, and the other end is connected to the mounting plate, and the mounting plate is connected to the second floating plate.

7. The floating connection device according to claim 1, characterized in that: The moving unit includes a sliding member and a guide rail slidably matched with the sliding member. One of the sliding member and the guide rail is arranged on the base, and the other is connected to the first floating unit.

8. The floating connection device according to claim 7, characterized in that: The moving unit further comprises a sliding plate, the sliding member is fixed to one side of the sliding plate, the other side of the sliding plate is connected to the first floating unit, and the floating connection device further comprises a detection unit, the detection unit is used to detect the position of the sliding plate to determine the connection state of the connector; Preferably, the detection unit includes a sensing member and a matching member, one of which is arranged on the base, and the other is arranged on the sliding plate; more preferably, the sensing member includes two sensing members, and the two sensing members are respectively arranged at two ends of the base in the vertical direction to correspond to the front position and the rear position respectively, when the sliding plate moves in the vertical direction and drives the matching member to the front position or the rear position, the first floating unit is controlled not to move forward or backward further.

9. A charging stand, characterized in that: The charging rack comprises a floating connection device as described in any one of claims 1 to 8, so as to be connected to a battery pack through the floating connection device.

10. A battery-swap vehicle, characterized in that: The battery-swapping vehicle includes a battery pack, and the battery pack is used to be plugged into the floating connection device as described in any one of claims 1-8.

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