Battery replacement equipment and battery replacement method of electric vehicle

Abstract

The invention discloses a battery replacing device and a battery replacing method of an electric vehicle. The battery replacing equipment comprises a supporting device used for supporting a to-be-replaced battery pack taken down from an electric vehicle; the moving device is connected with and acts on the supporting device so that the supporting device can move relative to the electric vehicle; and the unlocking device is arranged on the supporting device and comprises an unlocking lifting pin, and the unlocking lifting pin is used for unlocking the locking device of the battery pack so that the battery pack to be replaced can be unlocked to the unlocking state. According to the battery replacing equipment, the battery replacing equipment can be moved manually through the moving device, then the supporting device is used for supporting the battery pack, the unlocking device is used for positioning the battery pack through the positioning device, and therefore the unlocking device is used for disassembling or assembling the battery pack. The device is simple in structure, can move freely and does not need to be fixedly installed.

Description

[0001] This application is a divisional application of a patent application with an application date of August 21, 2019, application number 2019107740584, and invention name “Battery replacement equipment and battery replacement method for electric vehicles”. The above patent application cites the full text of the above Chinese patent application. Technical Field

[0002] The present invention belongs to the field of electric vehicles, and in particular relates to a battery replacement device and a battery replacement method for an electric vehicle. Background Art

[0003] As oil prices continue to rise and environmental pollution becomes increasingly serious, people have developed other energy vehicles as alternatives to fuel-powered vehicles, among which electric vehicles have the most promising application prospects.

[0004] Current electric vehicles mainly include direct-charging and quick-change types. Quick-change vehicles are currently mainly used in urban taxi systems. The on-board power batteries of electric taxis are quickly replaced through quick battery swap stations, thereby realizing online continuous operation of electric taxis.

[0005] Rapid battery swap stations generally use automated equipment. You only need to drive the electric vehicle that needs to be replaced to the battery swap station, and the corresponding battery swap equipment can automatically complete the removal and installation of the battery without human intervention. Due to the high degree of electrification and automation of rapid battery swap stations, the overall scale of rapid battery swap stations is generally large and not suitable for mobile operations. Therefore, it is necessary to fix the battery swap station in a suitable place. Therefore, if the electric vehicle fails and cannot be moved to the battery swap station, the current battery swap station will not be able to complete the removal and installation of the battery of the electric vehicle. At the same time, the equipment that completes related operations such as battery removal and installation is generally powered by electricity or gas. Once an unexpected event such as a power outage occurs, the battery swap station will not be able to continue working.

[0006] To sum up, the current battery swap stations have large-scale equipment, which is not convenient for mobile operations and cannot complete the removal and installation of batteries for electric vehicles outside the battery swap stations. At the same time, battery swap stations are highly dependent on electricity and cannot continue to work in unexpected situations such as power outages. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and to provide a battery replacement device and a battery replacement method for an electric vehicle.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] A battery swapping device, the battery swapping device is used to swap batteries for electric vehicles outside a battery swapping station, the battery swapping device comprises: a supporting device, used to support a battery pack to be replaced removed from the electric vehicle; a moving device, connected to and acting on the supporting device, so that the supporting device moves relative to the electric vehicle; an unlocking device, provided on the supporting device, the unlocking device comprises an unlocking ejector pin, the unlocking ejector pin is used to unlock the locking device of the battery pack, so that the battery pack to be replaced is unlocked to an unlocked state; wherein, when the battery pack to be replaced is in the unlocked state, the supporting device is also used to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle;

[0010] The battery replacement device further includes a positioning device, the positioning device is provided on the supporting device, the positioning device includes a first positioning portion, and the first positioning portion is used to realize the positioning of the supporting device and the electric vehicle;

[0011] The first positioning part includes a coarse positioning assembly, the coarse positioning assembly includes a coarse positioning seat and a positioning rod, the coarse positioning seat is connected to the supporting device, the positioning rod is arranged on the positioning seat, and the positioning rod is inserted into the electric vehicle to realize the positioning of the supporting device relative to the electric vehicle;

[0012] The rough positioning assembly also includes an adjustment portion, which is used to adjust the angle between the axis of the positioning rod and the plane where the positioning seat is located.

[0013] In this solution, by adopting the above structure, the movement of the battery exchange equipment can be completed by manpower through the mobile device, and then the support device can be used to support the battery pack. The positioning device can be used to position the battery pack through the unlocking device, and the unlocking device of the battery pack can be unlocked to complete the removal or installation of the battery pack. The battery exchange equipment of this embodiment has a simple structure and can be moved freely without fixed installation; at the same time, the battery exchange equipment does not require additional energy supply such as electricity, and has a compact structure and is easy to use. The positioning device is used to improve the positioning accuracy of the battery exchange equipment, so that the battery exchange equipment can quickly and safely replace the battery pack. The rough positioning seat and the positioning rod are used to realize the positioning of the battery exchange equipment relative to the electric vehicle, which simplifies the structural design of the rough positioning component. The adjustment part is used to improve the flexibility of the battery exchange equipment, reduce the positioning accuracy requirements of the battery exchange equipment relative to the electric vehicle, and improve the efficiency of the battery exchange equipment.

[0014] Preferably, the adjustment part is an adjustment spring, the positioning rod is arranged inside the adjustment spring, one end of the adjustment spring is connected to the coarse positioning seat, and the other end of the adjustment spring is connected to the positioning rod.

[0015] In this solution, by adopting the above structure, the flexibility of the positioning rod is improved by using an adjustment spring, which is beneficial to improving the efficiency of the battery replacement equipment.

[0016] Preferably, the spring can swing along with the positioning rod and generate an elastic force to drive the positioning rod to return to an initial state, wherein the initial state is a state when the positioning rod is perpendicular to the coarse positioning seat.

[0017] Preferably, the moving device includes a lifting portion, and the lifting portion is connected to and acts on the supporting device to move the supporting device relative to the battery pack to be replaced.

[0018] In this solution, by adopting the above structure, the lifting part is used to complete the displacement of the supporting device in the height direction, so that the device is suitable for different types of electric vehicles, thereby improving the scope of use of the device.

[0019] Preferably, the bottom of the mobile device is provided with universal wheels;

[0020] And / or, the unlocking ejector pin is used to unlock the locking device of the battery pack by manual operation.

[0021] In this solution, by adopting the above structure, the universal wheel is used to enable the device to flexibly adjust its direction, thereby improving the flexibility of the device. In addition, by manually unlocking the unlocking device of the battery pack, the battery pack can be disassembled and installed by manpower only, without the need for additional energy such as electricity, and the structure is compact and easy to use.

[0022] Preferably, the supporting device comprises an upper bracket, and the upper bracket is used to support the battery pack to be replaced.

[0023] In this solution, by adopting the above structure, the structure of the supporting device is simplified by using the upper bracket.

[0024] Preferably, the upper bracket includes a support assembly, and the support assembly is used to support the battery pack to be replaced. The support assembly includes a support platform, an elastic member and a base. The elastic member is arranged between the support platform and the base, and the base is connected to the upper bracket.

[0025] In this solution, by adopting the above structure and utilizing the support assembly to support the battery pack, the stability of the battery pack is improved and accidental damage to the battery pack is avoided.

[0026] Preferably, the elastic member is a supporting spring.

[0027] Preferably, the positioning device includes a second positioning portion, and the second positioning portion is used to achieve positioning of the supporting device and the battery pack to be replaced.

[0028] In this solution, by adopting the above structure, positioning is achieved through the first positioning part and the second positioning part layer, thereby improving positioning accuracy and efficiency.

[0029] Preferably, the second positioning portion includes a positioning fork, the lower end of the positioning fork is connected to the upper bracket, the upper end of the positioning fork is provided with a positioning groove, and the side wall of the battery pack to be replaced is provided with a positioning block, and the positioning groove is used to engage and connect with the positioning block.

[0030] In this solution, by adopting the above structure, the positioning fork is used to realize the positioning of the battery swapping device relative to the positioning block of the battery pack, thereby further improving the positioning accuracy of the battery swapping device and improving the efficiency of the battery swapping device.

[0031] Preferably, the unlocking device also includes a push pin guide rail and a traction portion, the push pin guide rail is connected to the upper bracket, the unlocking push pin is arranged on the push pin guide rail, and the traction portion pulls the unlocking push pin along the push pin guide rail from an initial position to an unlocking position; wherein, when the unlocking push pin is in the initial position, the battery pack to be replaced is in a locked state; when the unlocking push pin is in the unlocking position, the unlocking push pin is used to act on a locking mechanism to unlock the battery pack to be replaced to an unlocked state, wherein the locking mechanism is arranged on the electric vehicle to lock the battery pack to be replaced.

[0032] In this solution, by adopting the above structure, the unlocking device is formed by utilizing the ejector guide rail and the traction part, thereby simplifying the structure of the unlocking device and improving the efficiency of the unlocking device in opening the battery pack.

[0033] Preferably, the traction portion includes a handle assembly and a cable assembly, the handle assembly is connected to the unlocking push pin via the cable assembly, and the handle assembly is rotatably connected to the upper bracket to pull the unlocking push pin from the initial position to the unlocking position; wherein, when the handle assembly is in a raised state, the unlocking push pin is in the initial position; when the handle assembly is in a pulled-down state, the unlocking push pin is in the unlocking position.

[0034] In this solution, by adopting the above structure, the handle assembly and the cable assembly are used to control the unlocking ejector pin, which simplifies the structure of the traction part and improves the reliability of the traction part.

[0035] Preferably, the traction portion further comprises a connecting block, and the handle assembly and the cable assembly are connected via the connecting block.

[0036] Preferably, the connecting block has a first connecting groove and a second connecting groove, the first connecting groove and the second connecting groove are arranged on two opposite sides of the connecting block, the handle assembly is connected to the first connecting groove; the cable assembly is connected to the second connecting groove.

[0037] In this solution, by adopting the above structure, the first connecting groove and the second connecting groove are set by the connecting block, so as to realize the connection between the handle assembly and the cable assembly, and improve the efficiency of tension transmission.

[0038] Preferably, the connecting block has a plurality of second connecting grooves.

[0039] In this solution, by adopting the above structure and utilizing multiple second connecting grooves, the purpose of simultaneously controlling multiple cable assemblies is achieved, so that the unlocking ejector pins can all move synchronously, thereby improving the efficiency of unlocking the battery pack.

[0040] Preferably, the locking mechanism is a primary locking mechanism, and when the unlocking push pin is in the unlocking position, the unlocking push pin is used to abut against a lock link of the primary locking mechanism and lift up the lock link.

[0041] In this solution, by adopting the above structure and utilizing the unlocking pin to abut against the primary locking mechanism, the unlocking device can simultaneously unlock multiple locking points of the battery pack, which is beneficial to improving the unlocking efficiency of the battery swapping equipment.

[0042] Preferably, the unlocking device also includes a reset portion, one end of which is connected to the unlocking ejector pin, and the reset portion is arranged opposite to the traction portion. When the unlocking ejector pin completes unlocking the battery pack to be replaced, the reset portion pulls the unlocking ejector pin to move on the ejector pin guide rail to restore the unlocking ejector pin from the unlocking position to the initial position.

[0043] In this solution, by adopting the above structure, the reset part is used to enable the unlocking pin to be reset in time after being used, which is conducive to the battery replacement equipment being ready to unlock the battery pack at any time, thereby improving the efficiency of the battery replacement equipment.

[0044] Preferably, the reset portion is a reset spring.

[0045] Preferably, the supporting device further comprises a lower bracket, wherein the lower bracket is arranged below the upper bracket so that the upper bracket can slide relative to the lower bracket.

[0046] In the present solution, by adopting the above structure, the flexibility of the upper bracket is improved by utilizing the lower bracket, so that the positions of the related components on the upper bracket can be flexibly adjusted, thereby improving the flexibility of the battery exchange equipment.

[0047] Preferably, the first positioning part also includes a fine positioning component, the fine positioning component includes a bridging column, one end of the bridging column is connected to the lower bracket, and the other end of the bridging column is provided with a fine positioning groove. When the battery exchange equipment completes the rough positioning, the fine positioning groove is used to be clamped on the lock base of the electric vehicle.

[0048] In this solution, by adopting the above structure, the positioning of the battery replacement equipment relative to the battery pack is achieved by using a precise positioning component, thereby simplifying the structure of the precise positioning component.

[0049] Preferably, the supporting device also includes a sliding part, which includes a slider, a bracket guide rail and a driving part, the slider is connected to the upper bracket, the bracket guide rail is arranged on the lower bracket, the slider is arranged on the bracket guide rail, and the driving part is used to apply a force to the upper bracket so that the upper bracket slides relative to the bracket guide rail.

[0050] In this solution, by adopting the above structure, the sliding part is composed of a slider, a bracket guide rail and a driving part, which simplifies the structural form of the sliding part and improves the reliability of the sliding part.

[0051] Preferably, the driving part includes a first bracket, a second bracket, a transmission shaft and a wheel disc, the first bracket is connected to the lower bracket, the first bracket is used to support the transmission shaft, the transmission shaft can rotate relative to the first bracket, the outer side of the transmission shaft is provided with a transmission external thread, the second bracket is connected to the upper bracket, the second bracket is connected to the transmission shaft, the second bracket is provided with a transmission internal thread matching the transmission thread, and the transmission shaft also includes a wheel disc, and the wheel disc is used to rotate the transmission shaft.

[0052] In this solution, by adopting the above structure, the first bracket, the second bracket, the transmission shaft and the wheel disc are used to form a driving part, thereby simplifying the structural form of the driving part.

[0053] Preferably, the supporting device further comprises a limiting portion, wherein the limiting portion is arranged on the lower bracket, and the limiting portion is used to limit a sliding distance of the upper bracket relative to the lower bracket.

[0054] In this solution, by adopting the above structure, the limiting part is used to prevent the upper bracket from accidentally detaching from the bracket guide rail, thereby improving the safety of the battery replacement equipment.

[0055] Preferably, the limiting portion includes a limiting base and a limiting rod, the limiting base is connected to the lower bracket, one end of the limiting rod is connected to the limiting base, and when the upper bracket is located at the limiting point, the other end of the limiting rod abuts against the upper bracket.

[0056] Preferably, the limiting rod includes a rod body and an adjusting screw, one end of the rod body is connected to the limiting base, the other end of the rod body is provided with an internal thread, the adjusting screw is provided with an external thread, and the adjusting screw is connected to the rod body via the external thread and the internal thread.

[0057] A battery replacement method for an electric vehicle, characterized in that the battery replacement device as described above is used to replace the battery of the electric vehicle, and the battery replacement method for the electric vehicle comprises the following steps:

[0058] S10: using the moving device to move the supporting device to the bottom of the electric vehicle;

[0059] S20: unlocking the battery pack to be replaced to an unlocked state using the unlocking device;

[0060] S30: Using the supporting device to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle.

[0061] In this solution, by adopting the above method, the flexibility of replacing the battery pack of the electric vehicle is improved, and the dependence of the electric vehicle on the battery replacement station when replacing the battery pack is reduced. At the same time, it is also beneficial to improve the efficiency of replacing the battery pack of the electric vehicle.

[0062] Preferably, the battery replacement equipment also includes a positioning device, which is arranged on the supporting device to achieve the positioning of the supporting device and the battery pack to be replaced; before step S20, the battery replacement method of the electric vehicle also includes using the positioning device to achieve the positioning of the supporting device and the battery pack to be replaced.

[0063] A battery replacement method for an electric vehicle, characterized in that the battery replacement device as described above is used to replace the battery of the electric vehicle, and the battery replacement method for the electric vehicle comprises the following steps:

[0064] S10: using the moving device to move the supporting device to the bottom of the electric vehicle;

[0065] S20: using the positioning device to realize positioning of the supporting device and the battery pack to be replaced;

[0066] S30: unlocking the battery pack to be replaced to an unlocked state using the unlocking device;

[0067] S40: enabling the supporting device to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle.

[0068] The positive and progressive effects of the present invention are:

[0069] The present invention can utilize manpower to move the battery swap device through a mobile device, and then utilize a supporting device to support the battery pack, and utilize a positioning device to position the battery pack through an unlocking device, thereby manually unlocking the locking device of the battery pack, and then completing the removal or installation of the battery pack. The battery swap device of the present invention has a simple structure and can move freely without fixed installation. The positioning device is used to improve the positioning accuracy of the battery swap device, so that the battery swap device can quickly and safely replace the battery pack. The rough positioning seat and the positioning rod are used to realize the positioning of the battery swap device relative to the electric vehicle, which simplifies the structural design of the rough positioning component, and the adjustment part is used to improve the flexibility of the battery swap device, reduce the positioning accuracy requirements of the battery swap device relative to the electric vehicle, and improve the efficiency of the battery swap device. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 This is a schematic diagram of the structure of the battery replacement equipment of Example 1 of the present invention.

[0071] Figure 2 This is a schematic diagram of the structure of the upper bracket in the battery exchange equipment of Example 1 of the present invention.

[0072] Figure 3 This is a schematic diagram of the structure of the lower bracket in the battery exchange equipment of Example 1 of the present invention.

[0073] Figure 4 This is a schematic diagram of the structure of the support assembly in the battery exchange device of Example 1 of the present invention.

[0074] Figure 5 This is a schematic diagram of the structure of the coarse positioning component in the battery exchange equipment of Example 1 of the present invention.

[0075] Figure 6 This is a schematic diagram of the structure of the unlocking device in the battery exchange equipment of Example 1 of the present invention.

[0076] Figure 7 This is a schematic diagram of the structure of the traction unit in the battery exchange equipment of Example 1 of the present invention.

[0077] Figure 8 This is a schematic diagram of the structure of the connection block in the battery exchange equipment of Example 1 of the present invention.

[0078] Fig. 9 This is a structural schematic diagram of the relative positions of the limiting part and the sliding part in the battery exchange equipment of Example 1 of the present invention.

[0079] Fig.10 This is a schematic diagram of the structure of the driving unit in the battery exchange device of Example 1 of the present invention.

[0080] Fig.11 This is a flow chart of a battery replacement method for an electric vehicle according to Embodiment 2 of the present invention.

[0081] Description of reference numerals:

[0082] Battery replacement equipment 100

[0083] Support device 20

[0084] Upper bracket 21

[0085] Support assembly 22

[0086] Support table 221

[0087] Support spring 222

[0088] Base 223

[0089] Coarse positioning assembly 24

[0090] Coarse positioning seat 241

[0091] Positioning rod 242

[0092] Adjustment spring 243

[0093] Bridge Column 26

[0094] Positioning fork 27

[0095] Lower bracket 28

[0096] Sliding part 29

[0097] Slider 291

[0098] Bracket rail 292

[0099] First bracket 294

[0100] Second bracket 295

[0101] Drive shaft 296

[0102] Roulette 297

[0103] Limiting part 40

[0104] Limit base 41

[0105] Limit rod 42

[0106] Rod body 43

[0107] Adjusting screw 44

[0108] Unlocking device 30

[0109] Unlocking ejector pin 31

[0110] Ejector guide 32

[0111] Traction unit 33

[0112] Handle assembly 331

[0113] Cable assembly 332

[0114] Connection block 34

[0115] The first connecting groove 341

[0116] The second connecting groove 342

[0117] Return spring 35 DETAILED DESCRIPTION

[0118] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0119] Example 1

[0120] like Figure 1-10 As shown, this embodiment is a battery replacement device 100, which is used to replace the battery of an electric vehicle. The battery replacement device 100 includes: a support device 20, which is used to support the battery pack to be replaced removed from the electric vehicle; a moving device, which is connected to and acts on the support device 20, so that the support device 20 moves relative to the electric vehicle; an unlocking device 30, which is arranged on the support device 20, and the unlocking device 30 includes an unlocking top pin 31, which is used to unlock the locking device of the battery pack by manual operation, so that the battery pack to be replaced is unlocked to an unlocked state; wherein, when the battery pack to be replaced is in the unlocked state, the support device 20 is also used to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle. In this embodiment, manpower is used to complete the movement of the battery replacement device 100 through the moving device, and then the support device 20 is used to complete the support of the battery pack, and the unlocking device 30 is used to locate the battery pack through the positioning device, so as to unlock the locking device of the battery pack by manual operation, and then complete the removal or installation of the battery pack. The battery exchange device 100 of this embodiment has a simple structure, can be moved freely, does not require fixed installation, and can be disassembled and installed by manpower. At the same time, the battery exchange device 100 of this embodiment does not require additional energy supply such as electricity, and has a compact structure and is easy to use.

[0121] Figure 1 The battery exchange device 100 does not include a mobile device. In other embodiments, the mobile device can be a manual cart.

[0122] As an implementation mode, the mobile device may further include a lifting portion, which is connected to and acts on the support device 20 to move the support device 20 relative to the battery pack to be replaced. This embodiment uses the lifting portion to complete the displacement of the support device 20 in the height direction, so that the device is applicable to different types of electric vehicles, thereby increasing the scope of use of the device.

[0123] As a preferred embodiment, universal wheels are provided at the bottom of the mobile device. This embodiment uses universal wheels to enable the device to flexibly adjust its direction, thereby improving the flexibility of the device.

[0124] In this embodiment, the support device 20 includes an upper bracket 21, and the upper bracket 21 is used to support the battery pack to be replaced. In this embodiment, the structure of the support device 20 is simplified by using the upper bracket 21.

[0125] As an implementation mode, the upper bracket 21 may further include a support assembly 22, the support assembly 22 is used to support the battery pack to be replaced, the support assembly 22 includes a support platform 221, an elastic member and a base 223, the elastic member is arranged between the support platform 221 and the base 223, and the base 223 is connected to the upper bracket 21. In this embodiment, the support assembly 22 is used to support the battery pack, thereby improving the stability of the battery pack and avoiding accidental damage to the battery pack. In this embodiment, the elastic member is a support spring 222, and of course, other components can also be selected as the elastic member.

[0126] In order to facilitate the positioning of the battery swap device 100, the battery swap device 100 also includes a positioning device, which is arranged on the support device 20 to realize the positioning of the support device 20 and the battery pack to be replaced. This embodiment uses the positioning device to improve the positioning accuracy of the battery swap device 100, so that the battery swap device 100 can quickly and safely replace the battery pack.

[0127] In order to improve the positioning accuracy, the positioning device can also enable the support device 20 to be positioned with the electric vehicle, and the positioning device can also include a first positioning portion and a second positioning portion, the first positioning portion is used to realize the positioning of the support device 20 and the electric vehicle, and the second positioning portion is used to realize the positioning of the support device 20 and the battery pack to be replaced. This embodiment realizes positioning by the first positioning portion and the second positioning portion in layers, thereby improving the positioning accuracy and efficiency.

[0128] As an implementation method, Figure 5As shown, the first positioning part includes a coarse positioning component 24, and the coarse positioning component 24 includes a coarse positioning seat 241 and a positioning rod 242. The coarse positioning seat 241 is connected to the support device 20, and the positioning rod 242 is arranged on the positioning seat. The positioning rod 242 is inserted into the positioning hole preset in the electric vehicle to realize the positioning of the support device 20 relative to the electric vehicle. In this embodiment, the coarse positioning seat 241 and the positioning rod 242 are used to realize the positioning of the battery exchange device 100 relative to the electric vehicle, which simplifies the structural design of the coarse positioning component 24. In this embodiment, the coarse positioning component 24 also includes an adjustment part, which is used to adjust the angle between the axis of the positioning rod 242 and the plane where the coarse positioning seat 241 is located. That is to say, the adjustment part can make the positioning rod 242 swing relative to the positioning seat 241, for example: the positioning rod 242 can swing within a conical surface relative to the positioning seat 241, thereby expanding the range that the upper end of the positioning rod 242 can cover, thereby reducing the positioning accuracy between the battery exchange device 100 and the electric vehicle, so that the upper end of the positioning rod 242 is easier to insert into the positioning hole preset in the electric vehicle. The present embodiment utilizes an adjustment part to improve the flexibility of the battery exchange device 100, reduces the positioning accuracy requirements of the battery exchange device 100 relative to the electric vehicle, and improves the efficiency of the battery exchange device 100. Specifically, the adjustment part in the present embodiment is an adjustment spring 243, and the positioning rod 242 is arranged inside the adjustment spring 243. The lower end of the adjustment spring 243 is connected to the coarse positioning seat 241, and the upper end of the adjustment spring 243 is connected to the positioning rod 242. The positioning rod 242 can swing, and accordingly, the spring 243 swings with the positioning rod 242, and generates an elastic force that drives the positioning rod 242 to return to the initial state. The so-called initial state is the state in which the positioning rod 242 is perpendicular to the coarse positioning seat 241. The present embodiment utilizes the adjustment spring 243 to improve the flexibility of the positioning rod 242, which is beneficial to improving the efficiency of the battery exchange device 100.

[0129] In order to further improve the positioning accuracy of the battery swap device 100, the first positioning part also includes a precision positioning component, which includes a bridge column 26, one end of which is connected to the lower bracket 28, and the other end of the bridge column 26 is provided with a precision positioning groove. When the battery swap device 100 completes the rough positioning, the precision positioning groove is used to be clamped on the lock base of the electric vehicle. This embodiment uses the precision positioning component to realize the positioning of the battery swap device 100 relative to the battery pack, simplifying the structure of the precision positioning component.

[0130] In this embodiment, if Figure 2As shown, the second positioning part includes a positioning fork 27, the lower end of the positioning fork 27 is connected to the upper bracket 21, the upper end of the positioning fork 27 is provided with a positioning groove, and the side wall of the battery pack to be replaced is provided with a positioning block, and the positioning groove is used to engage with the positioning block. In this embodiment, the positioning fork 27 is used to realize the positioning of the battery replacement device 100 relative to the positioning block of the battery pack, further improving the positioning accuracy of the battery replacement device 100 and improving the efficiency of the battery replacement device 100.

[0131] As an embodiment, the unlocking device 30 may also include a pin guide rail 32 and a traction part 33, wherein the pin guide rail 32 is connected to the upper bracket 21, the unlocking pin 31 is arranged on the pin guide rail 32, and the traction part 33 pulls the unlocking pin 31 along the pin guide rail from the initial position to the unlocking position; wherein, when the unlocking pin 31 is in the initial position, the battery pack to be replaced is in a locked state; when the unlocking pin 31 is in the unlocking position, the unlocking pin 31 is used to act on the locking mechanism to unlock the battery pack to be replaced to the unlocking state, wherein the locking mechanism is arranged on the electric vehicle to lock the battery pack to be replaced. This embodiment uses the pin guide rail 32 and the traction part 33 to form the unlocking device 30, simplifies the structure of the unlocking device 30, and improves the efficiency of the unlocking device 30 in opening the battery pack.

[0132] In this embodiment, if Figure 2 , 6 As shown in FIG. 7 , the traction part 33 includes a handle assembly 331 and a cable assembly 332. The handle assembly 331 is connected to the unlocking ejector pin 31 through the cable assembly 332. The handle assembly 331 is rotatably connected to the upper bracket 21 to pull the unlocking ejector pin 31 from the initial position to the unlocking position; wherein, when the handle assembly 331 is in the lifted state, the unlocking ejector pin 31 is in the initial position; when the handle assembly is in the pulled down state, the unlocking ejector pin 31 is in the unlocking position. This embodiment utilizes the handle assembly 331 and the cable assembly 332 to realize the control of the unlocking ejector pin 31, simplifies the structure of the traction part 33, and improves the reliability of the traction part 33. Preferably, the traction part 33 also includes a connecting block 34, and the handle assembly 331 is connected to the cable assembly 332 through the connecting block 34. In this embodiment, the connection block 34 has a first connection groove 341 and a second connection groove 342, and the first connection groove 341 and the second connection groove 342 are arranged on two opposite sides of the connection block 34, and the handle assembly 331 is connected to the first connection groove 341; the cable assembly 332 is connected to the second connection groove 342. In this embodiment, the connection block 34 is provided with the first connection groove 341 and the second connection groove 342, so that the connection between the handle assembly 331 and the cable assembly 332 is realized, and the efficiency of the tension transmission is improved. Specifically, as Figure 8As shown, the connection block 34 of this embodiment has two second connection slots 342. In other embodiments, the number of the second connection slots 342 of the connection block 34 can also be other values. This embodiment uses multiple second connection slots 342 to achieve the purpose of simultaneously controlling multiple cable assemblies 332, so that the unlocking ejector pins 31 can all move synchronously, thereby improving the efficiency of unlocking the battery pack.

[0133] In order to further improve the unlocking efficiency of the battery swap device 100, the locking mechanism may also include a primary locking mechanism. When the unlocking push pin 31 is in the unlocking position, the unlocking push pin 31 is used to abut against the lock link of the primary locking mechanism and lift the lock link. This embodiment uses the unlocking push pin 31 to abut against the primary locking mechanism, so that the unlocking device 30 can simultaneously unlock multiple locking points of the battery pack, which is conducive to improving the unlocking efficiency of the battery swap device 100.

[0134] As an implementation mode, the unlocking device 30 also includes a reset portion, one end of which is connected to the unlocking push pin 31, and the reset portion is arranged opposite to the traction portion 33. When the unlocking push pin 31 completes the unlocking of the battery pack to be replaced, the reset portion pulls the unlocking push pin 31 to move on the push pin guide rail, so that the unlocking push pin 31 is restored from the unlocking position to the initial position. This embodiment utilizes the reset portion to enable the unlocking push pin 31 to be reset in time after use, which is beneficial for the battery exchange device 100 to be ready to unlock the battery pack at any time. The efficiency of the battery exchange device 100 is improved. In this embodiment, if Figure 6 As shown, the reset portion is a reset spring 35 .

[0135] In this embodiment, if Figure 1 and 3 As shown, the support device 20 also includes a lower bracket 28, which is arranged below the upper bracket 21 so that the upper bracket 21 can slide relative to the lower bracket 28. This embodiment uses the lower bracket 28 to improve the flexibility of the upper bracket 21, so that the relevant components on the upper bracket 21 can be flexibly adjusted, thereby improving the flexibility of the battery exchange device 100.

[0136] In order to adjust the position of the upper bracket 21, the support device 20 may further include a sliding portion 29, which includes a slider 291, a bracket rail 292 and a driving portion. The slider 291 is connected to the upper bracket 21, the bracket rail 292 is arranged on the lower bracket 28, the slider 291 is arranged on the bracket rail 292, and the driving portion is used to apply a force to the upper bracket 21 so that the upper bracket 21 slides relative to the bracket rail 292. In this embodiment, the slider 291, the bracket rail 292 and the driving portion are used to form the sliding portion 29, which simplifies the structural form of the sliding portion 29 and improves the reliability of the sliding portion 29.

[0137] In this embodiment, if Fig.10As shown, the driving part includes a first bracket 294, a second bracket 295, a transmission shaft 296 and a wheel 297. The first bracket 294 is connected to the lower bracket 28, and the first bracket 294 is used to support the transmission shaft 296. The transmission shaft 296 can rotate relative to the first bracket 294. The outer side of the transmission shaft 296 is provided with a transmission external thread. The second bracket 295 is connected to the upper bracket 21, and the second bracket 295 is connected to the transmission shaft 296. The second bracket 295 is provided with a transmission internal thread matched with the transmission thread. The transmission shaft 296 also includes a wheel 297, and the wheel 297 is used to rotate the transmission shaft 296. In this embodiment, the first bracket 294, the second bracket 295, the transmission shaft 296 and the wheel 297 are used to form the driving part, which simplifies the structural form of the driving part.

[0138] As an implementation mode, the support device 20 may further include a limit portion 40, which is disposed on the lower bracket 28 and is used to limit the sliding distance of the upper bracket 21 relative to the lower bracket 28. This embodiment utilizes the limit portion 40 to prevent the upper bracket 21 from accidentally detaching from the bracket guide rail 292, thereby improving the safety of the battery exchange device 100.

[0139] In this embodiment, if Fig. 9 As shown, the limiting part 40 includes a limiting base 41 and a limiting rod 42, the limiting base 41 is connected to the lower bracket 28, one end of the limiting rod 42 is connected to the limiting base 41, and when the upper bracket 21 is located at the limiting point, the other end of the limiting rod 42 abuts against the upper bracket 21. Preferably, the limiting rod 42 includes a rod body 43 and an adjusting screw 44, one end of the rod body 43 is connected to the limiting base 41, the other end of the rod body 43 is provided with an internal thread, the adjusting screw 44 is provided with an external thread, and the adjusting screw 44 is connected to the rod body 43 through the external thread and the internal thread.

[0140] Example 2

[0141] like Fig.11 As shown, this embodiment is a battery replacement method for an electric vehicle, which uses the battery replacement device in Example 1 to replace the battery of the electric vehicle. The battery replacement method for the electric vehicle includes the following steps:

[0142] S10: Using the moving device to move the supporting device to the bottom of the electric vehicle;

[0143] S20: unlocking the battery pack to be replaced to an unlocked state using an unlocking device;

[0144] S30: Using the supporting device to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle.

[0145] This embodiment improves the flexibility of replacing the battery pack of the electric vehicle, reduces the dependence of the electric vehicle on the battery replacement station when replacing the battery pack, and is also conducive to improving the efficiency of replacing the battery pack of the electric vehicle.

[0146] In other embodiments, the battery replacement equipment also includes a positioning device, which is arranged on the supporting device to achieve the positioning of the supporting device and the battery pack to be replaced; before step S20, the battery replacement method of the electric vehicle also includes using the positioning device to achieve the positioning of the supporting device and the battery pack to be replaced.

[0147] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A battery replacement device, characterized in that: The battery exchange equipment is used to exchange batteries for electric vehicles outside the battery exchange station, and the battery exchange equipment includes: A supporting device, used for supporting the battery pack to be replaced removed from the electric vehicle; A moving device, connected to and acting on the supporting device, so as to move the supporting device relative to the electric vehicle; An unlocking device, provided on the supporting device, the unlocking device comprising an unlocking ejector pin, the unlocking ejector pin being used to unlock the locking device of the battery pack so as to unlock the battery pack to be replaced to an unlocked state; Wherein, when the battery pack to be replaced is in the unlocked state, the supporting device is further used to drive the battery pack to be replaced to move relative to the electric vehicle so as to remove the battery pack to be replaced from the electric vehicle; The battery replacement device further includes a positioning device, the positioning device is provided on the supporting device, the positioning device includes a first positioning portion, and the first positioning portion is used to realize the positioning of the supporting device and the electric vehicle; The first positioning part includes a coarse positioning assembly, the coarse positioning assembly includes a coarse positioning seat and a positioning rod, the coarse positioning seat is connected to the supporting device, the positioning rod is arranged on the positioning seat, and the positioning rod is inserted into the electric vehicle to realize the positioning of the supporting device relative to the electric vehicle; The rough positioning assembly also includes an adjustment portion, which is used to adjust the angle between the axis of the positioning rod and the plane where the positioning seat is located.

2. The battery replacement device according to claim 1, characterized in that: The adjustment part is an adjustment spring, the positioning rod is arranged inside the adjustment spring, one end of the adjustment spring is connected to the rough positioning seat, and the other end of the adjustment spring is connected to the positioning rod; Preferably, the spring can swing along with the positioning rod and generate an elastic force to drive the positioning rod to return to an initial state, wherein the initial state is a state when the positioning rod is perpendicular to the coarse positioning seat.

3. The battery replacement device according to claim 1, characterized in that: The moving device includes a lifting portion, and the lifting portion is connected to and acts on the supporting device to move the supporting device relative to the battery pack to be replaced; And / or, the bottom of the mobile device is provided with universal wheels; And / or, the unlocking ejector pin is used to unlock the locking device of the battery pack by manual operation.

4. The battery replacement device according to claim 1, characterized in that: The supporting device comprises an upper bracket, and the upper bracket is used to support the battery pack to be replaced; Preferably, the upper bracket includes a support assembly, the support assembly is used to support the battery pack to be replaced, the support assembly includes a support platform, an elastic member and a base, the elastic member is arranged between the support platform and the base, and the base is connected to the upper bracket; Preferably, the elastic member is a supporting spring.

5. The battery replacement device according to claim 4, characterized in that: The positioning device includes a second positioning portion, which is used to realize the positioning of the supporting device and the battery pack to be replaced; preferably, the second positioning portion includes a positioning fork, the lower end of the positioning fork is connected to the upper bracket, the upper end of the positioning fork is provided with a positioning groove, and a positioning block is provided on the side wall of the battery pack to be replaced, and the positioning groove is used to engage and connect with the positioning block.

6. The battery replacement device according to claim 4, characterized in that: The unlocking device further comprises a push pin guide rail and a traction part, wherein the push pin guide rail is connected to the upper bracket, the unlocking push pin is arranged on the push pin guide rail, and the traction part pulls the unlocking push pin to move along the push pin guide rail from an initial position to an unlocking position; Wherein, when the unlocking ejector pin is in the initial position, the battery pack to be replaced is in a locked state; When the unlocking ejector pin is in the unlocking position, the unlocking ejector pin is used to act on a locking mechanism to unlock the battery pack to be replaced to an unlocked state, wherein the locking mechanism is provided on the electric vehicle to lock the battery pack to be replaced; Preferably, the traction part comprises a handle assembly and a cable assembly, the handle assembly is connected to the unlocking ejector pin via the cable assembly, and the handle assembly is rotatably connected to the upper bracket to pull the unlocking ejector pin from the initial position to the unlocking position; wherein, when the handle assembly is in a raised state, the unlocking ejector pin is in the initial position; When the handle assembly is in a pulled-down state, the unlocking ejector pin is in the unlocking position; Preferably, the traction part further comprises a connecting block, and the handle assembly and the cable assembly are connected via the connecting block; Preferably, the connecting block has a first connecting groove and a second connecting groove, the first connecting groove and the second connecting groove are arranged on two opposite sides of the connecting block, the handle assembly is connected to the first connecting groove; the cable assembly is connected to the second connecting groove; and / or the connecting block has a plurality of second connecting grooves.

7. The battery replacement device according to claim 6, characterized in that: The locking mechanism is a primary locking mechanism, and when the unlocking push pin is in the unlocking position, the unlocking push pin is used to abut against the lock link of the primary locking mechanism and push up the lock link; And / or, the unlocking device further comprises a reset portion, one end of which is connected to the unlocking ejector pin, the reset portion is arranged opposite to the traction portion, and when the unlocking ejector pin completes unlocking of the battery pack to be replaced, the reset portion pulls the unlocking ejector pin to move on the ejector pin guide rail, so that the unlocking ejector pin is restored from the unlocking position to the initial position; Preferably, the reset portion is a reset spring.

8. The battery replacement device according to claim 5, characterized in that: The supporting device further comprises a lower bracket, wherein the lower bracket is arranged below the upper bracket so that the upper bracket can slide relative to the lower bracket; Preferably, the first positioning part also includes a fine positioning component, the fine positioning component includes a bridging column, one end of the bridging column is connected to the lower bracket, and the other end of the bridging column is provided with a fine positioning groove, when the battery exchange equipment completes the rough positioning, the fine positioning groove is used to be clamped on the lock base of the electric vehicle.

9. The battery replacement device according to claim 8, characterized in that: The support device further comprises a sliding part, the sliding part comprises a slider, a bracket rail and a driving part, the slider is connected to the upper bracket, the bracket rail is arranged on the lower bracket, the slider is arranged on the bracket rail, and the driving part is used to apply a force to the upper bracket so that the upper bracket slides relative to the bracket rail; Preferably, the driving part includes a first bracket, a second bracket, a transmission shaft and a wheel disc, the first bracket is connected to the lower bracket, the first bracket is used to support the transmission shaft, the transmission shaft can rotate relative to the first bracket, the outer side of the transmission shaft is provided with a transmission external thread, the second bracket is connected to the upper bracket, the second bracket is connected to the transmission shaft, the second bracket is provided with a transmission internal thread matching the transmission thread, the transmission shaft also includes a wheel disc, and the wheel disc is used to rotate the transmission shaft.

10. The battery replacement device according to claim 8, characterized in that: The supporting device further comprises a limiting portion, which is arranged on the lower bracket and is used to limit the sliding distance of the upper bracket relative to the lower bracket; Preferably, the limiting portion includes a limiting base and a limiting rod, the limiting base is connected to the lower bracket, one end of the limiting rod is connected to the limiting base, and when the upper bracket is located at the limiting point, the other end of the limiting rod abuts against the upper bracket; Preferably, the limiting rod includes a rod body and an adjusting screw, one end of the rod body is connected to the limiting base, the other end of the rod body is provided with an internal thread, the adjusting screw is provided with an external thread, and the adjusting screw is connected to the rod body via the external thread and the internal thread.

11. A battery replacement method for an electric vehicle, characterized in that: The battery replacement method of the electric vehicle is performed by using the battery replacement device as described in any one of claims 1 to 4 and 6 to 10. The battery replacement method of the electric vehicle comprises the following steps: S10: using the moving device to move the supporting device to the bottom of the electric vehicle; S20: unlocking the battery pack to be replaced to an unlocked state using the unlocking device; S30: Using the supporting device to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle.

12. The battery replacement method of an electric vehicle according to claim 11, characterized in that: The battery replacement equipment also includes a positioning device, which is arranged on the supporting device to achieve the positioning of the supporting device and the battery pack to be replaced; before step S20, the battery replacement method of the electric vehicle also includes using the positioning device to achieve the positioning of the supporting device and the battery pack to be replaced.

13. A battery replacement method for an electric vehicle, characterized in that: The battery replacement device according to claim 5 is used to replace the battery of the electric vehicle, and the battery replacement method of the electric vehicle comprises the following steps: S10: using the moving device to move the supporting device to the bottom of the electric vehicle; S20: using the positioning device to realize positioning of the supporting device and the battery pack to be replaced; S30: unlocking the battery pack to be replaced to an unlocked state using the unlocking device; S40: enabling the supporting device to drive the battery pack to be replaced to move relative to the electric vehicle, so as to remove the battery pack to be replaced from the electric vehicle.

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