Battery tray and battery replacing device

Abstract

This invention provides a battery tray and a battery swapping device. The battery tray includes: a tray body for placing a battery pack; and a through hole formed on the tray body to avoid an unlocking component. The unlocking component is used to pass through the through hole and insert into the battery pack when it is placed on the tray body to position and unlock the battery pack. The battery pack's support and positioning are achieved by the tray body and the unlocking component detached from the tray body, respectively. This allows the tray body to be directly formed from a metal sheet (e.g., steel plate) without the need for additional battery pack positioning structures (e.g., limiting blocks) on the tray body, making molding more convenient. Furthermore, integrating the battery pack positioning function into the unlocking component improves integration and reliability without affecting the unlocking function, overcoming the drawback of existing technologies where positioning and unlocking are handled separately by the tray body (e.g., limiting blocks on the tray body) and the unlocking component, resulting in a complex unlocking structure.

Description

[0001] This application claims priority to Chinese patent application CN2021114443838, filed on November 30, 2021. The entire contents of that Chinese patent application are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of battery swapping technology, and in particular to a battery tray and battery swapping equipment. Background Technology

[0003] With the development and popularization of new energy vehicles, battery pack quick-swap technology has also developed rapidly. Currently, quick-swap technology is most mature in small passenger vehicles. Since passenger vehicle batteries are fixed to the vehicle chassis, specialized battery swapping equipment needs to be moved to the bottom of the vehicle for battery removal or installation when replacing the battery pack. Moreover, due to the relatively small weight of passenger vehicles, the battery pack is also relatively small, making battery replacement very convenient.

[0004] However, for large vehicles, such as heavy-duty or light-duty trucks, the large weight of the vehicle body and cargo necessitates a high capacity battery pack. Sufficiently large electrical capacity is required to support a vehicle's range of hundreds of kilometers, resulting in a large weight and volume of battery packs. Therefore, in current technology, large new energy vehicles typically use a top-mounted method to fix a large battery container to the vehicle's frame, with the container positioned close to the cab. This poses significant safety hazards to the driver and the vehicle during driving and the top-mounted battery swapping process. Furthermore, battery malfunctions can directly cause personal injury to the driver. Additionally, the top-mounted method requires a large site for the battery swapping station, necessitating a sufficiently large area for hoisting equipment to transfer and store batteries, leading to high construction costs.

[0005] Therefore, there is an urgent need for a safer, more reliable, and easier-to-adopt battery swapping mode for large vehicles, such as the chassis-based battery swapping mode used in passenger cars. However, when the existing chassis-based battery swapping mode for passenger cars is applied to large vehicles, the battery is placed on a battery tray. In order to position the battery packs placed on the battery tray, positioning blocks and other structures need to be set on the battery tray. However, setting positioning blocks makes the manufacturing and shaping of the battery tray more complicated and also reduces the compactness of the battery tray and the reliability of its operation. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome at least one of the defects of the prior art, such as setting positioning blocks on the battery tray making the battery tray processing and forming more complicated, reducing the degree of integration of the battery tray and the reliability of operation, and to provide a battery tray and battery swapping equipment.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] The present invention discloses a battery tray, the battery tray comprising: a tray body for placing a battery pack; a through hole formed on the tray body for avoiding an unlocking component, the unlocking component being used to pass through the through hole and insert into the battery pack when the battery pack is placed on the tray body to position and unlock the battery pack.

[0009] In this solution, the aforementioned structural form is adopted, where the battery pack's support and positioning are achieved by the tray body and the unlocking component detached from the tray body, respectively. This allows the tray body to be directly formed from metal sheets (such as steel plates), eliminating the need for related structures (such as limiting blocks) on the tray body to position the battery pack, making molding more convenient. Furthermore, integrating the battery pack's positioning function into the unlocking component improves integration and enhances reliability without affecting the unlocking function. This overcomes the shortcomings of existing technologies where positioning and unlocking are handled separately by the tray body (e.g., limiting blocks on the tray body) and the unlocking component, resulting in a complex unlocking structure.

[0010] Preferably, the through hole is configured to correspond to the unlocking mechanism built into the battery pack.

[0011] In this design, the unlocking component corresponds one-to-one with the through hole, and the corresponding arrangement of the through hole and the unlocking mechanism built into the battery pack can also be understood as the corresponding arrangement of the unlocking component and the unlocking mechanism built into the battery pack. During battery pack installation, the battery pack is placed on the tray body, and the unlocking component can extend into the battery pack to position it, improving the stability of the battery pack placement. When removing the battery pack from the electric vehicle, the unlocking component can also extend into the battery pack to unlock it. This structural design allows the unlocking component to extend into the battery pack through the through hole to position and unlock the battery pack.

[0012] Preferably, an annular gap is formed between the inner wall of the through hole and the unlocking member, so that the tray body can float relative to the unlocking member.

[0013] In this solution, the above-mentioned structural form is adopted. The inner diameter of the through hole is larger than the outer diameter of the unlocking component, which facilitates the unlocking component to pass through the through hole. In addition, since the inner diameter of the through hole is larger than the outer diameter of the unlocking component, an annular gap is generated between the inner wall of the through hole and the outer wall of the unlocking component. The generation of the annular gap also allows the position of the through hole to deviate to a certain extent relative to the unlocking component, which reduces the machining accuracy requirements of the through hole on the tray body. Furthermore, the annular gap also provides space for the tray body to float, avoiding interference between the tray body and the unlocking component when the tray body floats, thereby facilitating the installation of the battery pack located on the tray body.

[0014] Preferably, the tray body includes an abutment plate and a flange, the abutment plate being for contacting the battery pack, and the flange being formed at the edge of the abutment plate and extending away from the battery pack.

[0015] In this solution, the above-mentioned structural form is adopted, which places the battery pack on the abutment plate, increasing the connection area between the battery pack and the battery tray, thereby improving the stability of the battery pack placement; the flange formed at the edge of the abutment plate improves the bending strength of the battery tray; the flange extends away from the battery pack, which can also prevent the flange from interfering with the battery pack; in addition, when the battery pack is placed on the tray body, the battery pack will contact the edge of the tray body, and the above-mentioned flange can prevent the edge from damaging the battery pack.

[0016] Preferably, the flange is formed on at least two opposite edges of the abutment plate; more preferably, the abutment plate is a rectangular plate with unequal sides, and the flange is formed on the opposite edges of the longer side of the abutment plate; and / or, the transition between the abutment plate and the flange is smooth; and / or, the surface of the abutment plate that contacts the battery pack is flat; and / or, the abutment plate is provided with holes for weight reduction and / or machining positioning.

[0017] In this design, the aforementioned structural form is adopted, with flanges formed on at least two opposite edges of the abutment plate, improving its bending strength. The abutment plate is rectangular, increasing the contact area between it and the battery pack. The smooth transition between the abutment plate and the flange prevents stress concentration, improves the strength of the tray body, and also avoids interference between the edges of the abutment plate and the battery pack. The surface of the abutment plate that contacts the battery pack is flat, facilitating battery pack placement, ensuring more even stress distribution, and improving the stability of battery pack placement. Weight-reducing holes are provided on the abutment plate to reduce the weight of the battery tray. Additionally, holes for positioning during processing are provided on the abutment plate to facilitate positioning of the tray body during manufacturing.

[0018] Preferably, the tray body has a first positioning element on the surface opposite to the battery pack, and the first positioning element is used for positioning and installing the tray body.

[0019] In this solution, the above-mentioned structural form is adopted, and the installation and positioning of the pallet body can be realized through the first positioning component, thereby improving the stability of the pallet body's position.

[0020] Preferably, multiple first positioning members are provided, and the multiple first positioning members are distributed around the surface of the tray body opposite to the battery pack; preferably, four first positioning members are provided, symmetrically distributed around the two opposite sides of the surface of the tray body opposite to the battery pack; and / or, the tray body is provided with positioning member mounting holes, the first positioning member includes a connecting part and a protrusion provided at one end of the connecting part, the protrusion is inserted into the positioning member mounting hole and fixed to the tray body by welding, and the connecting part is exposed outside the tray body; preferably, the positioning member mounting hole is a through hole, the welding point is located on the side of the abutment plate facing the battery pack, and the welding point is flush with the surface of the abutment plate facing the battery pack; more preferably, the edge of the protrusion away from the connecting part has an inwardly inclined surface, and the inwardly inclined surface is welded to the inner wall of the positioning member mounting hole.

[0021] In this design, multiple first positioning elements further enhance the stability of the tray body. The positioning elements are positioned on the tray body through the engagement of their mounting holes and protrusions. The weld joint is located on the side of the abutment plate facing the battery pack, and is flush with the surface of the abutment plate facing the battery pack, thus avoiding interference with the placement of the first positioning elements and the battery pack. The inwardly inclined surface of the protrusion facilitates its insertion into and engagement with the positioning element mounting holes.

[0022] Preferably, the tray body includes a plurality of separate trays spaced apart, and each of the separate trays is provided with the through hole.

[0023] In this solution, the aforementioned structural form, compared to using a single large-area pallet, results in a lighter weight and lower inertia while maintaining the same load-bearing capacity. Furthermore, the separate pallets avoid the high precision requirements of manufacturing large-size single-piece pallets and the complex manufacturing process of modular (e.g., welded) large-size pallets. Additionally, each separate pallet has a through hole, and these through holes correspond one-to-one with the unlocking components. When the battery pack is placed on the battery pallet, the increased distribution range of the unlocking components improves the positioning range of the battery pack, thereby enhancing its stability. Moreover, the increased distribution range of the unlocking components facilitates unlocking the battery pack, improving the stability of the unlocking process.

[0024] The present invention also discloses a battery swapping device, including a device body, the battery swapping device further including a battery tray as described above, the battery tray being floatingly connected to the side of the device body facing the battery pack, the unlocking member being disposed on the device body, extending toward the battery pack, and passing through the through hole.

[0025] In this solution, the aforementioned structural form is adopted, and the battery tray is applied to the battery swapping equipment. The battery pack's support and positioning are achieved by the tray body and the unlocking component detached from the tray body, respectively. This allows the tray body to be directly formed from metal sheets (such as steel plates), eliminating the need for related structures (such as limiting blocks) on the tray body for positioning the battery pack, making the forming process more convenient. In addition, integrating the battery pack's positioning function into the unlocking component improves integration and makes the operation more reliable without affecting the unlocking function. This overcomes the shortcomings of existing technologies where positioning and unlocking are handled separately by the tray body (e.g., limiting blocks on the tray body) and the unlocking component, resulting in a complex unlocking structure.

[0026] Preferably, the device body includes a battery mounting section, a walking drive section for driving the battery swapping device to move, and a lifting section disposed on the walking drive section for driving the battery mounting section to rise and fall. The battery mounting section has a mounting section body and a battery tray. The mounting section body is connected to the lifting section, the battery tray is floatingly connected to the mounting section body, and the unlocking member is disposed on the mounting section body.

[0027] In this solution, the above-mentioned structure is adopted. The unlocking component passes through the through hole and contacts the unlocking mechanism inside the battery pack, pushing the unlocking mechanism out of the battery pack and acting on the locking mechanism to achieve unlocking. The unlocked battery pack can be placed on the tray body. The above-mentioned structure, with the unlocking component passing through the through hole to contact the unlocking mechanism of the battery pack, facilitates unlocking the battery pack, simplifies the unlocking structure, and increases reliability. During battery pack installation, the battery pack is placed on the battery tray, causing the battery tray to move closer to the mounting body under the weight of the battery pack. This allows the unlocking component to extend further out of the through hole, enabling it to reach into the battery pack for positioning, improving the stability of the battery pack during installation. Driven by the lifting unit, the mounting body moves upward, thereby moving the battery tray and the battery pack on it upward. When the battery tray reaches the bottom of the electric vehicle, its floating connection to the mounting body facing the battery pack allows for fine-tuning of the elastic extension direction according to the battery pack locking mechanism. This ensures the battery pack is stably attached to the bottom of the electric vehicle. Subsequently, driven by the unlocking device, the unlocking component moves downwards, removing itself from the battery pack. When removing the battery pack from the electric vehicle, the lifting unit moves the mounting body and battery tray upwards. As the upper surface of the battery tray aligns with the lower surface of the battery pack, the battery tray cannot move further upwards. The unlocking device then moves the unlocking component upwards, increasing its extension through the through hole, allowing it to reach into the battery pack and unlock it. During the unlocking process, the cooperation between the unlocking component and the battery pack positions the pack, resulting in smoother movement. Furthermore, the floating connection of the battery tray to the mounting body facing the battery pack allows it to adapt to the shape and height of the electric vehicle chassis during unloading, improving the fit between the battery tray and the battery pack, increasing the contact area, and enhancing the stability of the battery pack.

[0028] Preferably, there are multiple battery trays, which are arranged side by side at intervals along the traveling direction of the battery swapping device; more preferably, there are two battery trays, which are located on the two sides of the mounting body along the traveling direction of the battery swapping device.

[0029] In this solution, the aforementioned structural form, with its split battery tray, reduces the weight of the battery tray while ensuring proper placement of the battery pack. Furthermore, the multiple battery trays are arranged side-by-side at intervals along the traveling direction of the battery swapping equipment, improving the stability of the battery pack placement on the trays. Using two battery trays, and further positioning them at the opposite edges of the mounting body, maximizes the distance between the two trays, correspondingly increasing the effective area of ​​the battery trays and further enhancing the stability of the battery pack placement. This design also boasts a relatively simple structure.

[0030] Preferably, the tray body is floatingly connected to the device body via an elastic element, the elastic element having a head end and a tail end along its elastic extension direction, the head end being connected to the battery tray, and the tail end being connected to the device body.

[0031] In this solution, using the aforementioned structural form, during the process of removing the battery pack from the electric vehicle, the lifting unit moves the main body of the mounting unit and the battery tray upwards. When the battery tray contacts the battery pack, it cannot move further upwards due to the obstruction of the battery pack. At this point, the unlocking device continues to move the unlocking component upwards, and the extension direction of the elastic component is the same as the floating direction of the battery tray. This allows the battery tray to float through the elastic component when the unlocking component extends into the battery pack, enabling the battery tray to make minor adjustments to its elastic extension and contraction direction through the elastic component. This achieves a better fit between the battery tray and the battery pack at the bottom of the electric vehicle, facilitating battery... After the battery pack is unlocked, it can be stably placed on the battery tray, allowing the battery tray to be adjusted in height according to the chassis of the electric vehicle. Furthermore, during the placement of the battery pack onto the electric vehicle, the lifting unit moves the mounting body, the battery tray, and the battery pack placed on the tray upwards. During the attachment process, the battery tray can be finely adjusted in the direction of elastic extension and retraction using elastic components, thereby achieving a stable attachment of the battery pack to the locking mechanism on the electric vehicle. This structural design allows for a certain degree of offset error between the placement of the battery pack and the locking mechanism, increasing the accuracy and stability of the battery attachment.

[0032] Preferably, the tray body has a first positioning element on the surface opposite to the battery pack, and the device body has a second positioning element corresponding to the position of the first positioning element. The first end and the second end of the elastic element are respectively sleeved on the first positioning element and the second positioning element. Within the elastic extension range of the elastic element, the first positioning element and the second positioning element remain in contact.

[0033] In this solution, the above-mentioned structural form is adopted. The first and second positioning members can prevent the elastic member from shifting relative to the equipment body and the tray body, thereby improving the stability of the connection between the elastic member and the tray body and the equipment body. In addition, the first and second positioning members also guide the extension and contraction of the elastic member. The first and second positioning members do not contact each other, so that the elastic member has a compression margin, ensuring the floating connection of the battery tray and avoiding failure.

[0034] Preferably, the second positioning member is fixed to the device body by a connector passing through the second positioning member and the device body; preferably, the second positioning member is provided with a receiving hole for accommodating the connector.

[0035] In this solution, the above-mentioned structural form is adopted, with the elastic element sleeved on the second positioning element, so that the lower end of the elastic element will not slide relative to the horizontal direction of the device body surface, thereby improving the stability of the elastic element and allowing the elastic element to better provide cushioning for the battery tray; in addition, the connecting element passes through the second positioning element and the device body, fixing the second positioning element to the device body. Since the elastic element is sleeved on the second positioning element, the stable fixation of the second positioning element further improves the stability of the elastic element.

[0036] Preferably, the device body is further provided with at least one positioning element.

[0037] In this solution, the above-mentioned structural form is adopted. The positioning component on the device body can further position the battery pack and improve the stability of the battery pack.

[0038] Preferably, the unlocking member includes a positioning part and a guide part disposed at one end of the positioning part extending toward the battery pack, and: when the battery pack is not placed on the tray body, the positioning part does not protrude from the surface of the tray body used for placing the battery pack; when the battery pack is placed on the tray body, the positioning part protrudes from the surface of the tray body used for placing the battery pack.

[0039] In this solution, the aforementioned structure is adopted. The guide portion on the unlocking component first extends into the battery pack to position it. Then, the guide portion drives the positioning portion into the battery pack, thereby positioning the battery pack. When no battery pack is placed on the tray body, i.e., when the battery tray is not in use, the positioning portion does not protrude from the surface of the tray body used for placing the battery pack, thus preventing interference that the positioning portion might cause to the placement of the battery pack. Furthermore, this structure also improves the service life of the unlocking component. When the battery pack is placed on the tray body, the positioning portion protrudes from the surface of the tray body used for placing the battery pack, facilitating the positioning portion's insertion into the battery pack for positioning.

[0040] Preferably, the surface of the guide portion facing the battery pack has a sliding surface.

[0041] In this solution, the above-mentioned structure facilitates the insertion of the unlocking component and improves the accuracy of the unlocking component's insertion into the battery pack. Even if the battery pack's position is slightly off, it can be corrected during its placement onto the battery tray. In addition, the guide surface also ensures that the unlocking component does not damage the battery pack during insertion, thus improving the battery pack's lifespan.

[0042] The positive and progressive effects of this invention are as follows:

[0043] The battery pack's support and positioning are achieved by the tray body and the unlocking component detached from the tray body, respectively. This allows the tray body to be directly formed from sheet metal (e.g., steel plate), eliminating the need for additional battery pack positioning structures (e.g., limiting blocks) on the tray body, making molding more convenient. Furthermore, integrating the battery pack's positioning function into the unlocking component improves integration and reliability without affecting the unlocking function. This overcomes the drawback of existing technologies where positioning and unlocking are handled separately by the tray body (e.g., limiting blocks on the tray body) and the unlocking component, resulting in a complex unlocking structure. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the battery tray in Embodiment 1 and the split tray in Embodiment 2 of the present invention;

[0045] Figure 2 This is a schematic diagram of the unlocking component in Embodiment 3 of the present invention;

[0046] Figure 3 This is a plan view of the battery swapping equipment according to Embodiment 3 of the present invention;

[0047] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0048] Figure 5 This is a three-dimensional schematic diagram of the battery swapping device according to Embodiment 3 of the present invention;

[0049] Figure 6 for Figure 5 Enlarged view of a portion of point B in the middle;

[0050] Figure 7 This is a schematic diagram of the battery swapping device according to Embodiment 3 of the present invention;

[0051] Figure 8 This is a schematic diagram of the structure of the electric vehicle according to Embodiment 3 of the present invention;

[0052] Figure 9 This is a schematic diagram of the battery pack structure of Embodiment 3 of the present invention;

[0053] Figure 10 This is a schematic diagram of the locking mechanism in Embodiment 3 of the present invention;

[0054] Figure 11 This is a schematic diagram of the unlocking mechanism in Embodiment 3 of the present invention;

[0055] Figure 12 This is a schematic diagram of the locking mechanism and the lock connection structure in Embodiment 4 of the present invention, in which the locking mechanism and the lock connection structure are locked together;

[0056] Figure 13 This is a schematic diagram of the locking connection structure of Embodiment 4 of the present invention;

[0057] Figure 14 This is a schematic diagram of the locking mechanism in Embodiment 4 of the present invention;

[0058] Figure 15 This is a schematic diagram of the locking connection structure of Embodiment 4 of the present invention;

[0059] Figure 16 This is a schematic diagram of the locking mechanism and the lock connection structure in Embodiment 4 of the present invention, in which the locking mechanism and the lock connection structure are locked together.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100 battery swapping devices

[0062] Battery tray 1

[0063] Tray body 11

[0064] Through hole 111

[0065] Flip 112

[0066] Abutment plate 113

[0067] Positioning component mounting hole 114

[0068] First positioning component 12

[0069] Connecting part 121

[0070] Protrusion 122

[0071] Annular gap 13

[0072] Unlocking part 21

[0073] Positioning Unit 211

[0074] Guiding section 212

[0075] Sliding surface 213

[0076] Mounting flange 214

[0077] Elastic element 22

[0078] Second positioning component 23

[0079] Connector 25

[0080] Receiving hole 26

[0081] Walking drive unit 27

[0082] Battery mounting section 28

[0083] Positioning component 29

[0084] Unlocking mechanism 101

[0085] Locking mechanism 9

[0086] Battery pack 200

[0087] Electric vehicle 300

[0088] Lock base 351

[0089] First opening 352

[0090] Limiting part 353

[0091] First threaded section 354

[0092] Lock connection structure 36

[0093] Stop 362

[0094] Locking bar 363

[0095] Second threaded section 364

[0096] Second opening 365

[0097] Locking shaft 366

[0098] Mounting base 367 Detailed Implementation

[0099] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0100] Example 1

[0101] This embodiment discloses a battery tray 1, which solves at least one of the following problems: setting positioning blocks on the battery tray makes the processing and forming of the battery tray more complicated, reduces the degree of integration of the battery tray and the reliability of its operation.

[0102] like Figure 1As shown, the battery tray 1 includes a tray body 11 and a through hole 111. The tray body 11 is used to hold the battery pack 200; the through hole 111 is formed on the tray body 11 to avoid the unlocking member 21. The unlocking member 21 is used to pass through the through hole 111 and insert into the battery pack 200 when it is placed on the tray body 11 to position and unlock the battery pack 200. Specifically, when the battery pack 200 is placed on the tray body 11, the tray body 11 provides a space for the battery pack 200, facilitating its placement. Additionally, when the battery pack 200 is placed on the tray body 11, the unlocking member 21 (see reference)... Figure 2 and Figure 5 The battery pack 200 is positioned by being inserted into the battery pack 200 through the through hole 111. The through hole 111 avoids the unlocking member 21, preventing interference between the unlocking member 21 and the tray body 11. Furthermore, when the battery pack 200 is removed from the electric vehicle 300 and needs to be unlocked, the unlocking member 21 passes through the through hole 111 and extends out of the battery tray 1, then extends into the battery pack 200 to cooperate with the unlocking mechanism 101 inside the battery pack 200. This pushes the unlocking mechanism 101 out of the battery pack 200, and the unlocking mechanism 101, once pushed out of the battery pack 200, triggers the locking mechanism 9, thus unlocking the battery pack 200 from the electric vehicle 300, ensuring a smooth unlocking process. In other words, in the above-described structure, the battery pack 200 is supported and positioned by the tray body 11 and the unlocking component 21 detached from the tray body 11, respectively. This allows the tray body 11 to be formed directly from metal sheet (e.g., steel plate), eliminating the need for related structures (e.g., limiting blocks, limiting pins, etc.) on the tray body 11 to position the battery pack 200. This makes the forming of the battery tray 1 simpler and more convenient. In addition, integrating the positioning function of the battery pack 200 into the unlocking component 21 improves the integration and makes the operation more reliable without affecting the unlocking function. This overcomes the shortcomings of the prior art where positioning and unlocking are handled by the tray body 11 (e.g., limiting blocks are set on the tray body 11) and the unlocking component 21, resulting in a complex unlocking structure.

[0103] The through hole 111 is correspondingly provided with the unlocking mechanism 101 built into the battery pack 200. Specifically, the unlocking element 21 corresponds one-to-one with the through hole 111 (see...). Figure 5The through hole 111 and the corresponding unlocking mechanism 101 built into the battery pack 200 can also be understood as the unlocking component 21 and the corresponding unlocking mechanism 101 built into the battery pack 200 being configured. When installing the battery pack 200, the battery pack 200 is placed on the tray body 11, and the unlocking component 21 can extend into the battery pack 200 to position it, improving the stability of the battery pack 200. When removing the battery pack 200 from the electric vehicle 300, the unlocking component 21 can also extend into the battery pack 200 to unlock it. This structural form allows the unlocking component 21 to pass through the through hole 111 and extend into the battery pack 200 to position and unlock it. Furthermore, the aforementioned "unlocking mechanism 101 built into the battery pack 200" means that the unlocking mechanism 101 is located within the edge of the battery pack 200, preferably within the edge of the battery pack 200 and penetrating through it. By adopting the above-mentioned structural form, the impact of the unlocking mechanism 101 on the strength of the battery pack 200 can be reduced.

[0104] An annular gap 13 is formed between the inner wall of the through hole 111 and the unlocking member 21, allowing the tray body 11 to float relative to the unlocking member 21. Specifically, the inner diameter of the through hole 111 is larger than the outer diameter of the unlocking member 21, forming an annular gap 13 between the outer diameter of the unlocking member 21 and the inner diameter of the through hole 111. This can also be understood as the annular gap 13 being circumferentially arranged around the outer wall of the unlocking member 21, and the shape of the annular gap 13 depending on the shape of the inner wall of the through hole 111 and the shape of the outer wall of the unlocking member 21. With the above-described structure, the inner diameter of the through hole 111 is larger than the outer diameter of the unlocking member 21, which facilitates the unlocking member 21 passing through the through hole 111. In addition, the annular gap 13 also allows for a certain deviation in the position of the through hole 111 relative to the unlocking member 21, reducing the precision requirements for the opening position of the through hole 111 and making it easier to process the through hole 111. Furthermore, the annular gap 13 also provides space for the tray body 11 to float, avoiding interference between the tray body 11 and the unlocking member 21 when the tray body 11 floats, thereby facilitating the installation of the battery pack 200 located on the tray body 11.

[0105] The tray body 11 includes an abutment plate 113 and a flange 112. The abutment plate 113 is used to contact the battery pack 200, and the flange 112 is formed at the edge of the abutment plate 113 and extends away from the battery pack 200. With this structure, placing the battery pack 200 on the abutment plate 113 increases the connection area between the battery pack 200 and the battery tray 1, thereby improving the stability of the battery pack 200. The flange 112, formed at the edge of the abutment plate 113, increases the bending strength of the battery tray 1. The flange 112 extending away from the battery pack 200 also prevents interference with the battery pack 200. Furthermore, when the battery pack 200 is placed on the tray body 11, it will contact the edge of the tray body 11; the flange 112 prevents damage to the battery pack 200 from the edge.

[0106] In practical use, the surface of the abutment plate 113 where the battery pack 200 is placed is flat, which facilitates the placement of the battery pack 200, makes the force on the battery pack 200 more even, and improves the stability of the battery pack 200. Preferably, the abutment plate 113 is a rectangular plate with unequal sides, which can increase the contact area between the abutment plate 113 and the battery pack 200, thereby improving the stability of the battery pack 200.

[0107] Flanges 112 are formed on at least two opposite sides of the abutment plate 113; specifically, there are two flanges 112, which are disposed on opposite sides of the abutment plate 113 along the traveling direction of the power swapping equipment 100 (see...). Figure 5 The flange 112 is of equal length to the edge it is located on, and reinforces the abutment plate 113 along the entire length of the edge it is located on, thereby further improving the bending strength of the abutment plate 113. In other embodiments, the position and number of flanges 112 are not limited. The smooth transition between the abutment plate 113 and the flange 112 can prevent stress concentration, improve the strength of the tray body 11, and also prevent the edge of the abutment plate 113 from interfering with the battery pack 200. The holes provided in the abutment plate 113 can be implemented in several ways. In the first embodiment, the abutment plate 113 has holes for weight reduction; in the second embodiment, the abutment plate 113 has holes for processing positioning; in the third embodiment, the abutment plate 113 has holes for both weight reduction and processing positioning. Preferably, the abutment plate 113 has holes for both weight reduction and processing positioning. By adopting the above structural form, the weight reduction holes provided in the abutment plate 113 can reduce the weight of the battery tray 1. In addition, the abutment plate 113 has holes for positioning during processing, which facilitates positioning during the processing of the battery tray. Of course, these holes are not necessary, and they can be omitted if needed.

[0108] A first positioning element 12 is provided on the surface of the tray body 11 facing away from the battery pack 200. The first positioning element 12 is used for positioning and installing the tray body 11. The position of the tray body 11 can be positioned by the first positioning element 12, thereby improving the stability of the position of the tray body 11.

[0109] Multiple first positioning elements 12 are provided, and the multiple first positioning elements 12 are distributed around the surface of the tray body 11 opposite to the battery pack 200. The multiple first positioning elements 12 further improve the stability of the tray body 11. Preferably, four first positioning elements 12 are provided, but the number of first positioning elements 12 can also be six (see reference). Figure 7 In other embodiments, the number of first positioning elements 12 may not be limited.

[0110] The pallet body 11 is provided with a positioning member mounting hole 114. The first positioning member 12 includes a connecting portion 121 and a protrusion 122 disposed at one end of the connecting portion 121. The protrusion 122 is inserted into the positioning member mounting hole 114 and fixed to the pallet body 11 by welding. The connecting portion 121 is exposed outside the pallet body 11. Specifically, the protrusion 122 extends into the positioning member mounting hole 114 and cooperates with the positioning member mounting hole 114 to realize the connection between the first positioning member 12 and the pallet body 11. The upper end of the connecting portion 121 is connected to the lower end of the connecting portion 121, thereby realizing the positioning of the pallet body 11 through the connecting portion 121. Preferably, the connecting portion 121 and the protrusion 122 are integrally formed to improve the strength of the first positioning member 12.

[0111] In practical use, the positioning mounting hole 114 is a through hole, and the weld is located on the side of the abutment plate 113 facing the battery pack 200. The weld is flush with the surface of the abutment plate 113 facing the battery pack 200 (this can be achieved by grinding after welding), which can avoid interference with the placement of the first positioning member 12 and the battery pack 200. Further preferably, the edge of the protrusion 122 away from the connecting part 121 has an inwardly inclined surface, and the inwardly inclined surface is welded to the inner wall of the positioning mounting hole 114, which facilitates the protrusion 122 to extend into the positioning mounting hole 114 and cooperate with the positioning mounting hole 114.

[0112] Example 2

[0113] In this embodiment, the tray body 11 includes multiple separate trays spaced apart, each of which has a through hole 111. Each separate tray adopts the structure of the tray body 11 in Embodiment 1. Using the above structure, compared to using a single large-area tray, the multiple independent separate trays are lighter and have less inertia. Furthermore, the separate trays avoid the high precision requirements of processing large-size single-piece trays, and also avoid the complex processing of combined (e.g., welded combined) large-size trays. Additionally, each separate tray has a through hole 111, and each through hole 111 corresponds one-to-one with the unlocking element 21. When the battery pack 200 is placed on the battery tray 1, increasing the distribution range of the unlocking elements 21 improves the positioning range of the battery pack 200, thereby improving the stability of the battery pack 200 placed on the battery tray 1. Furthermore, increasing the distribution range of the unlocking elements 21 also facilitates unlocking the battery pack 200, improving the stability of the unlocking elements 21 in unlocking the battery pack 200. Preferably, there are two separate trays, which are located at the two opposite edges of the battery mounting section 28 (see...). Figure 5 By adopting the above-mentioned structural form, the distance between the two separate trays used to support the battery pack 200 is maximized without interfering with the operation of the battery mounting part 28, thereby improving the stability of the battery pack 200.

[0114] Example 3

[0115] like Figures 2 to 7 As shown, this embodiment provides a battery swapping device 100, including a device body and a battery tray 1 as described in Embodiment 2. The battery tray 1 is floatingly connected to the side of the device body facing the battery pack 200. An unlocking member 21 is disposed on the device body, extends towards the battery pack 200, and passes through the through hole 111. By adopting the above structural form and applying the battery tray 1 to the battery swapping device 100, the bearing and positioning of the battery pack 200 are respectively achieved by the tray body 11 and the unlocking member 21 detached from the tray body 11. This allows the tray body 11 to be directly formed using metal sheet (e.g., steel plate), eliminating the need to set related structures (e.g., limiting blocks) for positioning the battery pack 200 on the tray body 11, making molding more convenient. In addition, integrating the positioning function of the battery pack 200 into the unlocking member 21 improves the integration and makes the operation more reliable without affecting the unlocking function. This overcomes the structural complexity caused by the prior art where positioning and unlocking are respectively handled by the tray body 11 (e.g., setting limiting blocks on the tray body 11) and the unlocking member 21.

[0116] The device body includes a battery mounting section 28, a walking drive section 27 for driving the battery swapping device 100 to move, and a lifting section disposed on the walking drive section 27 for driving the battery mounting section 28 to rise and fall. The battery mounting section 28 has a mounting section body and a battery tray 1. The mounting section body is connected to the lifting section, and the battery tray 1 is floatingly connected to the mounting section body. An unlocking member 21 is disposed on the mounting section body. Specifically, when unlocking the battery pack 200, the unlocking member 21 passes through the through hole 111 and contacts the unlocking mechanism 101 inside the battery pack 200, pushing the unlocking mechanism 101 out of the battery pack 200 and acting on the locking mechanism 9 to achieve unlocking. After unlocking, the battery pack 200 can be placed on the tray body 11. Using the above-described structure, the unlocking member 21 passes through the through hole 111 to contact and unlock the battery pack 200's unlocking mechanism 101, facilitating unlocking of the battery pack 200. The unlocking structure is simpler and more reliable. When installing the battery pack 200, it is placed on the battery tray 1, causing the battery tray 1 to move closer to the mounting body under the weight of the battery pack 200. This allows the unlocking member 21 to extend further out of the through hole 111, enabling it to penetrate the battery pack 200 and unlock it. The positioning mechanism improves the stability of the battery pack 200 during installation. Driven by the lifting mechanism, the main body of the mounting unit moves upward, which in turn moves the battery tray 1 and the battery pack 200 on the battery tray 1 upward. When the battery pack 200 reaches the bottom of the electric vehicle 300, because the battery tray 1 is floatingly connected to the side of the mounting unit facing the battery pack 200, the battery tray 1 can make slight adjustments to the direction of elastic extension and retraction according to the locking mechanism 9 of the battery pack 200, thus allowing the battery pack 200 to be stably attached to the bottom of the electric vehicle 300. Subsequently, driven by the unlocking device, the unlocking member 21 moves downward, causing the unlocking member 21 to be removed from the battery pack 200. When the battery pack 200 is removed from the electric vehicle 300, the lifting mechanism moves the main body of the mounting unit and the battery tray 1 upward. When the upper surface of the battery tray 1 is in contact with the lower surface of the battery pack 200, the battery tray 1 cannot move upward further. However, the unlocking device moves the unlocking member 21 upward, increasing the length of the unlocking member 21 extending out of the through hole 111. The unlocking member 21 can then be inserted into the battery pack 200 to unlock it. During the unlocking process, the cooperation between the unlocking member 21 and the battery pack 200 allows for positioning of the battery pack 200, resulting in smoother movement. Furthermore, the battery tray 1 is floatingly connected to the mounting body on the side facing the battery pack 200, allowing the battery tray 1 to adapt to the height and shape of the electric vehicle 300 chassis during battery pack unloading. This improves the fit between the battery tray 1 and the battery pack 200, increasing the contact area and enhancing the stability of the battery pack 200.

[0117] Multiple battery trays 1 are arranged side-by-side at intervals along the traveling direction of the battery swapping equipment 100. This structural design reduces the weight of the battery trays 1 while ensuring the battery pack 200 can be placed normally. Furthermore, the arrangement of multiple battery trays 1 side-by-side at intervals along the traveling direction of the battery swapping equipment 100 improves the stability of the battery pack 200 placed on the battery trays 1. Preferably, two battery trays 1 are used, located on opposite edges of the mounting body along the traveling direction of the battery swapping equipment 100. Using two battery trays 1, and further positioning them on opposite edges of the mounting body, maximizes the distance between the two battery trays 1, correspondingly increasing the effective area of ​​the battery trays 1, further improving the placement stability of the battery pack 200, and resulting in a simpler structure.

[0118] The tray body 11 is floatingly connected to the equipment body via an elastic element 22. The elastic element 22 has a head end and a tail end along its elastic extension direction. The head end is connected to the battery tray 1, and the tail end is connected to the equipment body. Specifically, during the process of removing the battery pack 200 from the electric vehicle 300, the lifting part moves the mounting part body and the battery tray 1 upward. When the battery tray 1 contacts the battery pack 200, it cannot move upward due to the obstruction of the battery pack 200. At this time, the unlocking device continues to move the unlocking element 21 upward relative to the battery tray 1. The extension direction of the elastic element 22 is the same as the floating direction of the battery tray 1, so that when the unlocking element 21 extends into the battery pack 200, the battery tray 1 can float through the elastic element 22. This allows the battery tray 1 to be finely adjusted in the elastic extension direction through the elastic element 22, so as to achieve a better fit between the battery tray 1 and the battery pack 200 at the bottom of the electric vehicle 300, so as to facilitate the installation of the battery pack. After unlocking, the battery pack 200 can be stably placed on the battery tray 1, allowing the battery tray 1 to be adjusted in height according to the chassis of the electric vehicle 300. Furthermore, during the process of placing the battery pack 200 on the electric vehicle 300, the lifting unit moves the mounting body, the battery tray 1, and the battery pack 200 placed on the battery tray 1 upwards. During the attachment process, the battery tray 1 can be finely adjusted in the elastic extension direction via the elastic element 22, thereby achieving a stable attachment of the battery pack 200 to the locking mechanism 9 on the electric vehicle 300. This structural design allows for a certain degree of offset error between the placement of the battery pack 200 and the locking mechanism 9, increasing the accuracy and stability of the battery attachment.

[0119] In practical use, the elastic element 22 is a spring; in other embodiments, the elastic element 22 may also be a rubber block.

[0120] A first positioning member 12 is provided on the surface of the tray body 11 facing away from the battery pack 200. A second positioning member 23 is provided on the device body corresponding to the position of the first positioning member 12. The head and tail ends of the elastic member 22 are respectively fitted onto the first positioning member 12 and the second positioning member 23. Specifically, one of the first positioning member 12 and the battery tray 1 has a protrusion 122, and the other has a positioning member mounting hole 114 that matches the protrusion 122. In this embodiment, the first positioning member 12 includes a connecting portion and a protrusion 122, and the connecting portion has the protrusion 122. The battery tray 1 has a positioning member mounting hole 114 that matches the protrusion 122. With this structure, since the head end of the elastic member 22 is fitted onto the first positioning member 12, the head end of the elastic member 22 will not move horizontally relative to the battery tray 1, thereby improving the stability of the elastic member 22. Furthermore, the second positioning element 23 prevents the tail end of the elastic element 22 from shifting horizontally relative to the device body, thereby further improving the stability of the elastic element 22. This structural design, through the stable placement of the elastic element 22, also improves the stability of the battery tray 1 and the battery pack 200 placed on it, facilitating the unlocking and installation of the battery pack 200.

[0121] Within the elastic extension range of the elastic member 22, the first positioning member 12 and the second positioning member 23 remain in contact. Specifically, when the battery pack 200 is placed on the battery tray 1 (the weight of the battery pack 200 will compress the elastic member 22), or during the unlocking process of the battery pack 200 (the battery pack 200 pressing against the bottom of the electric vehicle 300 will further compress the elastic member 22), the battery tray 1 will move towards the device body. At this time, the first positioning member 12 will also move towards the second positioning member 23. Since the first positioning member 12 and the second positioning member 23 remain in contact, the elastic member 22 has a compression margin, allowing the unlocking member 21 to fully extend through the through hole 111 to unlock and position the battery pack 200. Furthermore, the above structural form also allows the elastic member 22 to always undergo elastic deformation, avoiding leveling failure.

[0122] The second positioning member 23 is fixed to the device body by a connector 25 passing through the second positioning member 23 and the device body; preferably, the second positioning member 23 is provided with a receiving hole 26 for accommodating the connector 25. Specifically, the connector 25 extends into the device body through the receiving hole 26, so that the second positioning member 23 can be connected to the device body, and then the lower end of the elastic member 22 can be sleeved on the second positioning member 23 to achieve connection and limitation of the elastic member 22. With the above structure, the elastic member 22 is sleeved on the second positioning member 23, so that the lower end of the elastic member 22 will not slide relative to the horizontal direction of the device body on the surface of the device body, improving the stability of the elastic member 22, and thus also allowing the elastic member 22 to better provide cushioning for the battery tray 1; in addition, the connector 25 passes through the second positioning member 23 and the device body, fixing the second positioning member 23 to the device body. Since the elastic member 22 is sleeved on the second positioning member 23, the stable fixation of the second positioning member 23 further improves the stability of the elastic member 22.

[0123] The device body also includes at least one positioning element 29. Using this structure, the positioning element 29 on the device body further positions the battery pack 200, improving its stability. Specifically, one end of the positioning element 29 is connected to the device body, and the other end extends towards the battery pack 200. The positioning element 29 is used to position the battery pack 200 when it is placed on the battery tray 1. When the battery pack 200 is placed on the battery tray 1, the unlocking element 21 can extend into the battery pack 200 to unlock and position it. Simultaneously, the positioning element 29 can also extend into the battery pack 200 to position it, further improving the stability of the battery pack 200 on the battery tray 1. Furthermore, when unlocking the battery pack 200, the positioning element 29 can also extend into the battery pack 200 together with the unlocking element 21, improving the positioning accuracy and achieving stable unlocking of the battery pack 200.

[0124] A positioning element 29 is provided, and the distance between the end of the positioning element 29 extending towards the battery pack 200 and the device body is greater than the distance between the end of the unlocking element 21 extending towards the battery pack 200 and the device body (i.e., the length of the positioning element 29 is greater than the length of the unlocking element 21). Specifically, during unlocking, the unlocking element 21 contacts the unlocking mechanism 101 inside the battery pack 200, pushing the unlocking mechanism 101 out of the battery pack 200 to act on the locking mechanism and achieve unlocking. In addition, the unlocking element 21 cooperates with the battery pack 200 to position the battery pack 200. Therefore, the unlocking element 21 needs to cooperate with the unlocking mechanism 101 inside the battery pack 200 when it extends into the battery pack 200, while the positioning element 29 can position the battery pack 200 when it extends into the battery pack 200. By adopting the above-mentioned structural form, while the unlocking component 21 unlocks the battery pack 200, the positioning component 29 cooperates with the battery pack 200 to increase the contact area between the battery pack 200 and the battery mounting part 28, thereby improving the stability of unlocking the battery pack 200.

[0125] The unlocking member 21 includes a positioning part 211 and a guide part 212 disposed at one end of the positioning part 211 extending toward the battery pack 200. When the battery pack 200 is not placed on the tray body 11, the positioning part 211 does not protrude from the surface of the tray body 11 used for placing the battery pack 200; when the battery pack 200 is placed on the tray body 11, the positioning part 211 protrudes from the surface of the tray body 11 used for placing the battery pack 200. Specifically, when the unlocking member 21 extends into the battery pack 200, the guide part 212 on the unlocking member 21 first extends into the battery pack 200 to position the battery pack 200, and then the guide part 212 drives the positioning part 211 into the battery pack 200, thereby positioning the battery pack 200 through the positioning part 211. When the battery pack 200 is not placed on the tray body 11, i.e., when the battery tray 1 is not in use, the positioning part 211 does not protrude from the surface of the tray body 11 used for placing the battery pack 200, thereby preventing the positioning part 211 from interfering with the placement of the battery pack 200. Furthermore, this structural design can also improve the service life of the unlocking member 21. When the battery pack 200 is placed on the tray body 11, the positioning part 211 protrudes from the surface of the tray body 11 used for placing the battery pack 200, thereby facilitating the positioning part 211 to extend into the battery pack 200 and position it.

[0126] In practical use, the unlocking component 21 is an unlocking rod. One end of the unlocking rod is connected to the equipment body, and the other end extends away from the equipment body. Preferably, the extension direction of the unlocking rod is perpendicular to the upper surface of the equipment body. To facilitate the connection between the unlocking rod and the equipment body, it is preferable that the end of the unlocking rod near the equipment body is provided with a mounting flange 214, and the unlocking rod is connected to the equipment body through the mounting flange 214.

[0127] The positioning part 211 and the guide part 212 can be integrally formed, which can improve the strength of the unlocking part 21. Alternatively, the guide part 212 and the positioning part 211 can be separately provided, which is convenient for processing, and if one of the guide part 212 and the positioning part 211 is damaged, only the damaged positioning part 211 or guide part 212 needs to be replaced for normal use. In this embodiment, the positioning part 211 and the guide part 212 are integrally formed.

[0128] The guide portion 212 has a guide surface 213 on its surface facing the battery pack 200. This structure facilitates the insertion of the unlocking member 21, improves the accuracy of the unlocking member 21's insertion into the battery pack 200, and corrects any deviation in the battery pack 200's position during its placement onto the battery tray 1. Furthermore, the guide surface 213 ensures that the unlocking member 21 does not damage the battery pack 200 during insertion, thus extending the battery pack 200's lifespan.

[0129] The positioning element 29 can adopt the same structure as the unlocking element 21.

[0130] The battery pack 200 has preset holes that match the unlocking member 21 and the positioning member 29 for insertion into the battery pack 200. There is a certain gap (e.g., 2-3 mm) between the unlocking member 21 and the positioning member 29 and the corresponding preset holes. This gap does not exceed the allowable deviation range of the connection between the battery pack 200 and the vehicle end locking mechanism 9, and also ensures that the battery pack 200 can float slightly relative to the battery swapping equipment when it is placed on the battery tray 1.

[0131] In practical use, the battery swapping device 100 is used to perform battery swapping operations on commercial vehicles such as heavy-duty trucks or light-duty trucks. Furthermore, the battery tray has a stronger load-bearing capacity for the battery pack 200, making the battery swapping device 100 more suitable for swapping batteries on heavy-duty trucks.

[0132] Please refer to Figures 8 to 11To understand, the locking mechanism 9 is connected to the electric vehicle 300 and is used to connect the battery pack 200 to the electric vehicle 300. The unlocking mechanism 101 is located inside the battery pack 200. When the battery pack 200 is removed from the electric vehicle 300, the battery mounting part 28 moves the tray body 11 upward. When the upper surface of the tray body 11 is in contact with the lower surface of the battery pack 200, the tray body 11 can no longer move upward. The unlocking device drives the unlocking member 21 to continue moving upward, so that the length of the unlocking member 21 extending out of the through hole 111 increases. At this time, the unlocking member 21 can extend into the battery pack 200 and contact the unlocking mechanism 101 in the battery pack 200. When the unlocking member 21 continues to rise, it also drives the unlocking mechanism 101 to continue moving upward, so that the unlocking mechanism 101 is eventually pushed out of the battery pack 200. The pushed-out unlocking mechanism 101 can trigger the locking linkage 91 in the locking mechanism 9 to unlock the battery pack 200. In addition, the unlocking piece 21 extending into the battery pack 200 can also position the battery pack 200 so that the unlocked battery pack 200 can be stably placed on the tray body 11.

[0133] Example 4

[0134] The parts that are the same as those in the above embodiments will not be repeated here. The difference lies in the structural form of the locking mechanism 9.

[0135] like Figures 12 to 16 As shown, the locking mechanism 9 includes a lock base 351, which has a first opening 352 extending in a vertical direction, and a first threaded portion 354 is provided in the first opening 352.

[0136] In this embodiment, based on the first threaded portion 354 provided in the first opening 352 of the fourth lock base, a second threaded battery mounting portion 28 364 that mates with the first threaded portion 354 or a stop portion 362 that mates with the limiting portion 353 is provided on the lock shaft on the battery pack 200. The lock base 351 and the lock shaft are connected by a bolt-type lock, and the two can be locked by the cooperation of the first threaded portion 354 and the second threaded portion 364.

[0137] Specifically, such as Figure 12 and Figure 13As shown, the locking mechanism 9 includes a lock base 351 with a first opening 352 extending vertically. A first threaded portion 354, which is an internal thread, is provided within the first opening 352. The battery pack bracket includes a locking connection structure 36 for engaging with the locking mechanism 9 on the vehicle beam to achieve locking. The locking connection structure 36 includes a mounting base 367 and a locking shaft 366. A second opening 365 extending vertically is provided within the mounting base 367. The locking shaft 366 is vertically disposed within the second opening 365 and is movable vertically relative to the mounting base 367. The locking shaft 366 has a second threaded portion 364 that engages with the first threaded portion 354, thereby achieving locking and unlocking of the locking mechanism 9 and the locking connection structure 36.

[0138] In other specific embodiments, the locking shaft 201 of the battery pack bracket has a limiting part 353, and the locking mechanism 9 includes a locking base 351. The locking base 351 has a first opening 352 extending in a vertical direction, and a stop part 362 that cooperates with the limiting part 353 is provided in the first opening 352. The locking base 351 and the locking shaft are connected in a T-lock manner, and the two can be locked by the cooperation of the limiting part 353 and the stop part 362.

[0139] Specifically, such as Figures 14 to 16 As shown, the locking mechanism 9 includes a lock base 351, which has a first opening 352 extending in a vertical direction. A stop portion 362 is provided in the first opening 352. In this embodiment 1, the first opening 352 is a square hole and the stop portion 362 is formed above the first opening 352. The lock connection structure 36 includes a lock shaft 366, which has a limiting portion 353 at its upper end. The limiting portion 353 includes a locking rod 363 extending in a horizontal direction. The locking rod 363 is a columnar body and is horizontally arranged on the top of the lock shaft 366. The locking rod 363 and the lock shaft 366 together form a T-shaped structure.

[0140] When the locking rod 363 is at the first angle, the locking rod 363 can pass through the first opening and enter the limiting part 353 of the lock base 351. When the locking rod 363 rotates to the second angle, the locking rod 363 can be restricted within the limiting part 353, thereby making the locking mechanism 9 and the lock connection structure 36 relatively fixed.

[0141] The lifting mechanism that drives the battery installation unit to rise and fall can utilize existing technologies for battery swapping equipment. Considering the large weight and volume of battery packs in large vehicles, larger-specification and larger-sized products can be used for the power source and mechanical transmission components.

[0142] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A battery swapping device, comprising a device body, characterized in that, The battery swapping device also includes a battery tray, which comprises: The tray itself is used to hold the battery pack; A through hole is provided on the tray body to avoid the unlocking component, which is used to pass through the through hole and insert into the battery pack when the battery pack is placed on the tray body to position and unlock the battery pack; The battery tray is floatingly connected to the side of the device body facing the battery pack, and the unlocking member is disposed on the device body, extends towards the battery pack, and passes through the through hole; The device body includes a battery mounting section, a walking drive section for driving the battery swapping device to move, and a lifting section disposed on the walking drive section for driving the battery mounting section to rise and fall. The battery mounting section has a mounting section body and the battery tray. The mounting section body is connected to the lifting section, and the battery tray is floatingly connected to the mounting section body. The unlocking component is disposed on the mounting section body.

2. The battery swapping equipment as described in claim 1, characterized in that, The number of battery trays is multiple, and the multiple battery trays are arranged side by side at intervals along the walking direction of the battery swapping equipment.

3. The battery swapping equipment as described in claim 2, characterized in that, The number of battery trays is two, and the two battery trays are respectively located on the two sides of the mounting body along the traveling direction of the battery swapping equipment.

4. The battery swapping equipment as described in claim 1, characterized in that, The tray body is floatingly connected to the device body via an elastic element. The elastic element has a head end and a tail end along its elastic extension direction. The head end is connected to the battery tray, and the tail end is connected to the device body.

5. The battery swapping equipment as described in claim 4, characterized in that, The tray body has a first positioning element on the surface away from the battery pack, and the device body has a second positioning element corresponding to the position of the first positioning element. The first and second ends of the elastic element are respectively sleeved on the first positioning element and the second positioning element. Within the elastic extension range of the elastic member, the first positioning member and the second positioning member remain in contact.

6. The battery swapping equipment as described in claim 5, characterized in that, The second positioning member is fixed to the device body by a connector that passes through the second positioning member and the device body.

7. The battery swapping equipment as described in claim 6, characterized in that, The second positioning member is provided with a receiving hole for accommodating the connector.

8. The battery swapping equipment as described in claim 1, characterized in that, The device body is also equipped with at least one positioning component.

9. The power swapping equipment as described in any one of claims 1-8, characterized in that, The unlocking component includes a positioning part and a guide part disposed at one end of the positioning part extending toward the battery pack, and: When the battery pack is not placed on the tray body, the positioning part does not protrude from the surface of the tray body used to place the battery pack; When the battery pack is placed on the tray body, the positioning part protrudes from the surface of the tray body used to place the battery pack.

10. The battery swapping equipment as described in claim 9, characterized in that, The guide portion has a sliding surface on the surface facing the battery pack.

11. The battery swapping equipment as described in claim 1, characterized in that, The through hole is correspondingly provided with the unlocking mechanism built into the battery pack.

12. The battery swapping equipment as described in claim 1, characterized in that, An annular gap is formed between the inner wall of the through hole and the unlocking element, so that the tray body can float relative to the unlocking element.

13. The battery swapping equipment as described in claim 1, characterized in that, The tray body includes an abutment plate and a flange. The abutment plate is used to contact the battery pack, and the flange is formed at the edge of the abutment plate and extends away from the battery pack.

14. The battery swapping equipment as described in claim 13, characterized in that, The flange is formed on at least two opposite edges of the abutment plate.

15. The battery swapping equipment as described in claim 14, characterized in that... The abutment plate is a rectangular plate with unequal sides, and the flanges are formed on the opposite edges of the longer sides of the abutment plate.

16. The battery swapping equipment as described in claim 13, characterized in that, The transition between the abutment plate and the flange is smooth; And / or, the surface of the abutment plate that contacts the battery pack is flat; And / or, the abutment plate is provided with holes for weight reduction and / or machining positioning.

17. The battery swapping device as described in claim 13, characterized in that, The tray body has a first positioning element on the surface opposite to the battery pack, and the first positioning element is used for positioning and installing the tray body.

18. The battery swapping equipment as described in claim 17, characterized in that, The first positioning element is provided in multiple forms, and the multiple first positioning elements are distributed on the periphery of the tray body away from the battery pack.

19. The battery swapping equipment as described in claim 18, characterized in that, The first positioning element is provided in four parts, symmetrically distributed on the periphery of the two opposite sides of the surface of the tray body away from the battery pack.

20. The battery swapping equipment as described in claim 17, characterized in that, The pallet body is provided with a positioning component mounting hole. The first positioning component includes a connecting part and a protrusion disposed at one end of the connecting part. The protrusion is inserted into the positioning component mounting hole and fixed to the pallet body by welding. The connecting part is exposed outside the pallet body.

21. The battery swapping equipment as described in claim 20, characterized in that, The mounting hole of the positioning component is a through hole, and the welding point is located on the side of the abutment plate facing the battery pack, and the welding point is flush with the surface of the abutment plate facing the battery pack.

22. The battery swapping equipment as described in claim 21, characterized in that, The protrusion has an inwardly inclined surface at one end away from the connecting part, and the inwardly inclined surface is welded to the inner wall of the positioning member mounting hole.

23. The power swapping equipment as described in any one of claims 1 to 22, characterized in that, The tray body includes multiple separate trays spaced apart, and each of the separate trays is provided with the through hole.

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