Travel device and battery replacement equipment including the same

Abstract

The present invention provides a traveling device and a battery exchange device including the same. The traveling device drives the battery exchange device to travel in a preset direction. The traveling device includes: a guide mechanism and at least two groups of traveling mechanisms arranged on the battery exchange device at intervals along the traveling direction. The guide mechanism is arranged on one side of the battery exchange device along the traveling direction. The traveling device and the battery exchange device including the same avoid the situation where the guiding action on both sides may conflict by arranging the guide mechanism on one side of the battery exchange device, thus forming an effective traveling guide, reducing the probability of failure, improving the battery exchange efficiency, and saving the number of guide mechanisms. By arranging at least two groups of traveling mechanisms on the battery exchange device at intervals along the traveling direction, the front and rear ends of the battery exchange device have traveling mechanisms, so that the traveling device has a greater load-bearing capacity and can meet the load-bearing requirements of heavy truck batteries.

Description

Technical Field

[0001] The present invention relates to the technical field of battery replacement for electric vehicles, and in particular to a battery replacement device for a running device and the like. Background Art

[0002] At present, automobile exhaust emissions are still an important factor in environmental pollution. In order to control automobile exhaust, people have developed natural cars, hydrogen fuel cars, solar cars and electric cars to replace fuel-powered cars. Among them, electric cars have the most promising application prospects. At present, electric cars mainly include direct charging and quick-change types. At present, the quick-change technology of small passenger cars is the most mature. The batteries of passenger cars are fixed on the chassis of the vehicle. Therefore, when replacing the battery pack, special battery replacement equipment is also required to move to the bottom of the vehicle for battery removal or installation. Moreover, since passenger cars are light in weight and the volume of battery packs is relatively small, the operability of battery replacement is very convenient. However, for large vehicles, such as heavy trucks, the body and cargo weight are very large, resulting in large vehicles having a high demand for battery pack capacity. A large enough capacity of electricity must be required to support large vehicles to travel hundreds of kilometers. Therefore, in the existing technology, large vehicles of the new energy series all fix the larger battery container on the vehicle's beam by top-hanging, and the battery container is set close to the cab, which leads to greater safety hazards to the driver and the vehicle itself during driving and top-hanging battery replacement; and if the battery fails, it will directly cause personal injury to the driver. In addition, the top-hanging method has very high requirements for the site of the battery replacement station, which requires the battery replacement station to have a large enough area to carry out the lifting equipment to transport the battery and store the battery, resulting in high station construction costs.

[0003] Therefore, for large vehicles, a safer, more reliable and more popular battery replacement mode is urgently needed, such as replacing the battery of a heavy truck from the bottom of the vehicle. However, the battery replacement trolley structure currently used in passenger cars is difficult to adapt to heavy trucks for battery replacement, so designers need to develop battery replacement equipment that is suitable for the larger and heavier batteries of heavy trucks, especially the walking device of the battery replacement equipment needs to ensure that it can travel stably and efficiently while carrying the battery. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the problems of insufficient safety of battery replacement for heavy trucks and inability to perform bottom battery replacement in the prior art, and to provide a traveling device and a battery replacement device including the same.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A walking device for a battery exchange device, which drives the battery exchange device to move along a preset direction. The walking device includes: a guide mechanism and at least two groups of walking mechanisms arranged on the battery exchange device at intervals along the walking direction, and the guide mechanism is arranged on one side of the battery exchange device along the walking direction.

[0007] In this solution, by setting a guide mechanism on one side of the battery swapping device, the possible conflict caused by the simultaneous guiding action on both sides is avoided, an effective walking guide is formed, the probability of failure is reduced, the battery swapping efficiency is improved, and the number of guide mechanisms is saved; by setting at least two groups of walking mechanisms at intervals along the walking direction on the battery swapping device, the front and rear ends of the battery swapping device have walking mechanisms, the walking is smoother, the driving force is greater, and the walking device has a greater load-bearing capacity, which can meet the load-bearing requirements of heavy-duty truck batteries.

[0008] Preferably, each group of the walking mechanisms includes two walking wheels and a walking drive mechanism connecting the two walking wheels, and the walking wheels in the same group are arranged at intervals on both sides of the walking direction.

[0009] In this solution, by setting a travel drive mechanism in each group, the driving force of the travel device is stronger, which can ensure that the battery replacement equipment meets the load and transportation requirements of heavy truck batteries. At the same time, compared with using a high-power motor, it can reduce costs and save space. At the same time, the two travel wheels of each group are connected to the same travel drive mechanism, so that the same travel drive mechanism drives the two travel wheels of the same group at the same time, realizing synchronous rotation, avoiding the inconsistent rotation of the travel wheels on both sides, resulting in deviation from the preset travel direction, which is beneficial to travel guidance and stability.

[0010] Preferably, there are at least two guide mechanisms, and at least one guide mechanism is respectively provided at the head end and the tail end of the battery exchange equipment along the walking direction; and / or, at least one group of walking mechanisms is respectively provided at the head end and the tail end of the battery exchange equipment along the walking direction, and the guide mechanism is arranged between the two groups of walking mechanisms along the walking direction.

[0011] In the present solution, two or more guiding mechanisms are used to ensure that even if a single guiding mechanism fails, the battery swapping equipment can continue to move along the preset route. By arranging at least one guiding mechanism at the head and tail ends of the battery swapping equipment along the moving direction, a guiding effect is generated at the head and tail ends respectively, balancing the front and rear guiding forces, which is beneficial to the guiding effect. By arranging the guiding mechanism between the two groups of walking mechanisms at the head and tail ends along the moving direction, the middle guiding mechanism is more evenly stressed when sharing the load of the battery swapping equipment with the walking mechanism, thereby making the movement of the battery swapping equipment smoother.

[0012] Preferably, the guide mechanism includes a guide wheel and a floating assembly, the guide wheel can cooperate with the ground track so that the battery exchange device can move along the track, and the guide wheel is connected to the battery exchange device through the floating assembly so that the guide wheel can float in the up and down directions, so that the guide wheel can generate a force toward the track.

[0013] In this solution, the walking direction is limited through the cooperation between the guide wheel and the track, and the walking guidance of the battery swapping equipment by the guide mechanism is realized; it is connected to the battery swapping equipment through the floating assembly, and the guide wheel is made to float up and down, which effectively buffers the impact of the battery swapping equipment on the guide wheel when the walking is unstable, or buffers the impact of the guide mechanism on the battery swapping equipment caused by the unstable walking of the guide wheel, so that the walking is smoother and the guide wheel is prevented from being damaged by the impact; at the same time, it can also ensure that the guide wheel body can always effectively contact the track, which is beneficial to improve the guiding effect.

[0014] Preferably, each group of the walking mechanisms includes two walking wheels, and the movement trajectories of the guide wheels and the walking wheels along the walking direction do not overlap.

[0015] In this solution, through reasonable layout, the movement trajectories of the guide wheel and the running wheel along the walking direction do not overlap, avoiding mutual interference between the guide mechanism and the running wheel, which is conducive to smooth walking.

[0016] Preferably, the friction coefficient of the walking wheel is greater than the friction coefficient of the guide wheel.

[0017] In this scheme, the friction coefficient of the walking wheel is configured to be greater than the friction coefficient of the guide wheel, so that the grip of the walking wheel on the ground is always greater than the friction between the guide wheel and the track, ensuring that the walking direction will not be easily disturbed by the fluctuation of the rolling friction of the guide wheel. At the same time, slipping can be avoided, which is conducive to smooth walking and reduces walking resistance.

[0018] Preferably, the outer ring of the running wheel is covered with an elastic sleeve, so that the running wheel can always contact the ground during walking.

[0019] In this solution, the elastic sleeve is wrapped around the outer ring of the walking wheel to cushion the up and down bounce of the walking wheel. At the same time, compared with the walking wheel made of rigid material, the elastic sleeve can have a larger contact area with the ground, ensuring that it is always in contact with the ground and has sufficient grip, so that it is not easy to deviate from the predetermined direction when walking.

[0020] Preferably, the guide wheel includes a wheel hub and a wheel seat, the wheel hub is embedded in the wheel seat, and both ends of the central axis of the wheel hub are fixed to the wheel seat so that the wheel hub can roll around the central axis to walk on the track, and the floating component is arranged between the wheel seat and the battery exchange device and applies a downward force to the wheel seat.

[0021] In this solution, the wheel hub is embedded in the wheel seat to protect the wheel hub; walking is achieved by the rolling of the wheel hub on the track; the floating component is set on the wheel seat, so that during the floating process, the floating component is not easily affected by rolling imbalance and causes deflection, making the buffering effect more stable; through the force of the floating component on the wheel seat or the reaction force of the wheel seat on the floating component, the wheel seat is able to transfer floating between the wheel hub and the battery exchange equipment, producing a buffering effect and making walking more stable.

[0022] Preferably, the wheel hub is a groove wheel, which includes a rolling part and limiting parts on both sides thereof, the diameter of the two limiting parts is larger than the diameter of the rolling part, and the width of the rolling part is larger than the width of the track so that the limiting parts are engaged with both sides of the track when the wheel hub moves on the track.

[0023] In this solution, the groove wheel structure is used to achieve the coordination between the wheel hub and the track, limiting the moving space of the wheel hub in the width direction, thereby achieving a guiding effect on the walking direction; setting the width of the rolling part larger than the width of the track also avoids the wheel hub and the track from getting stuck, ensuring a certain amount of moving space.

[0024] Preferably, the traveling device further includes a traveling wheel protection mechanism, and the traveling wheel protection mechanism is arranged on the outer side of the battery exchange device close to the traveling wheel and is located along the traveling direction toward the adjacent traveling wheel.

[0025] In this solution, a traveling wheel protection mechanism is arranged on the outer side of the battery exchange device near the traveling wheel, along the traveling direction and toward the traveling wheel, so that when the traveling wheel is damaged, it can be blocked by the traveling wheel protection mechanism, thereby protecting other structures of the battery exchange device from damage.

[0026] Preferably, the lower end of the running wheel protection mechanism is not lower than the lower end point of the running wheel and is not higher than the lower edge of the battery exchange device.

[0027] In this solution, the lower end of the walking wheel protection mechanism is set between the lower edge of the battery swapping device and the lower end point of the walking wheel, so that the walking wheel protection mechanism can not only avoid interfering with the walking of the walking wheel, but also play a temporary support role when the walking wheel has problems and cannot support the battery swapping device, thereby avoiding the bottom surface of the battery swapping device from being worn and affecting the function of the battery swapping device.

[0028] Preferably, the travel device further comprises a braking resistor, and the braking resistor is electrically connected to the travel drive mechanism to consume the kinetic energy generated by the travel drive mechanism during deceleration.

[0029] In this solution, by setting a braking resistor, the kinetic energy generated by the travel drive mechanism during the deceleration process is consumed and consumed in the form of electrical energy through the braking resistor to improve the safety of the motor.

[0030] Preferably, the braking resistor is arranged outside the battery exchange device close to the travel drive mechanism.

[0031] In this solution, the braking resistor is arranged close to the travel drive mechanism, which is beneficial to timely and quickly consume the kinetic energy of the travel drive mechanism during the deceleration process.

[0032] A battery exchange device comprises a basic frame, a battery exchange device installed on the basic frame and a traveling device as described above, wherein the traveling device enables the battery exchange device to be movable so as to travel to a preset position to exchange battery for a vehicle through the battery exchange device.

[0033] In this solution, by adopting the above-mentioned walking device, the battery replacement equipment improves the walking stability during the battery replacement process, effectively ensures walking along the set path, reduces the probability of failure, and improves the battery replacement efficiency; the structure is compact and the layout is more reasonable; the driving force is greater, so that the walking device has a greater load-bearing capacity and can meet the load-bearing requirements of heavy-duty truck batteries.

[0034] Preferably, the battery exchange equipment also includes a lifting device, which includes a lifting drive mechanism, a lifting member and a lifting transmission mechanism connecting the lifting drive mechanism and the lifting member, and the battery exchange device is connected to the lifting member arranged on the inner side of the basic frame. The lifting drive mechanism provides power to the lifting member through the lifting transmission mechanism to drive the battery exchange device to be raised and lowered relative to the basic frame.

[0035] In this solution, the battery of the vehicle can be replaced through the battery swapping device. The battery swapping device is connected to the lifting device, so that during the battery swapping process, the battery swapping device can cooperate with the vehicle to install or remove the battery by rising, and transfer the removed battery or the battery to be installed by descending. At the same time, the lifting and lowering of the battery swapping device can also enable the battery swapping of heavy trucks with different chassis heights.

[0036] Preferably, the lifting transmission mechanism extends along the traveling direction of the battery exchange device and is arranged on the outside of the basic frame, and the guide mechanism is arranged below or inside the basic frame to avoid interference of the guide mechanism with the lifting transmission mechanism.

[0037] In this solution, by arranging the lifting transmission mechanism on the outside of the basic frame and the guiding mechanism on the bottom or inside of the basic frame, the positions of the guiding mechanism and the lifting transmission mechanism on the basic frame do not overlap, thus avoiding mutual interference. The structure is compact and is conducive to the rational layout of various components on the battery exchange equipment.

[0038] The positive progressive effect of the present invention is that the walking device and the battery exchange device including the same avoid the possible conflict caused by the simultaneous guiding action on both sides by only arranging the guide mechanism on one side of the battery exchange device, thereby forming an effective walking guide, reducing the probability of failure, improving the battery exchange efficiency, and saving the number of guide mechanisms; by arranging at least two groups of walking mechanisms at intervals along the walking direction on the battery exchange device, the front and rear ends of the battery exchange device have walking mechanisms, the walking is smoother, the driving force is greater, the walking device has a greater load-bearing capacity, and can meet the load-bearing requirements of heavy-duty truck batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of the walking device of Example 1 of the present invention.

[0040] Figure 2 for Figure 1 Right view of .

[0041] Figure 3 for Figure 1 Section view along CC.

[0042] Figure 4 for Figure 3 Schematic diagram of the structure with local B enlarged.

[0043] Figure 5 This is a schematic structural diagram of the guide mechanism of Example 1 of the present invention.

[0044] Figure 6 It is a front view of the guide mechanism of embodiment 1 of the present invention.

[0045] Figure 7 This is a partial structural diagram of the walking device of Example 1 of the present invention.

[0046] Figure 8 This is a schematic diagram of the structure of the battery replacement equipment of embodiment 2 of the present invention.

[0047] Fig. 9 This is a partial structural diagram of the battery replacement equipment of embodiment 2 of the present invention.

[0048] Description of reference numerals:

[0049] Walking device 1

[0050] Guide mounting plate 11

[0051] Guide shaft 12

[0052] Guide mechanism 13

[0053] Guide wheel 131

[0054] Wheel 1311

[0055] Rolling part 13111

[0056] Limiting part 13112

[0057] Wheel seat 1312

[0058] Compression spring 132

[0059] Horizontal mounting hole 133

[0060] Traveling mechanism 14

[0061] Travel wheel 141

[0062] Rubber layer 1411

[0063] Travel drive motor 142

[0064] Travel transmission shaft 143

[0065] Travel wheel block 15

[0066] Braking resistor 16

[0067] Battery replacement equipment 2

[0068] Basic Framework 3

[0069] Lifting drive motor 41

[0070] Lifting transmission mechanism 43

[0071] Lifting drive shaft 431

[0072] Secondary transmission structure 432

[0073] Cam 433

[0074] Walking direction A. DETAILED DESCRIPTION

[0075] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0076] Example 1

[0077] like Figure 1As shown, this embodiment provides a walking device 1 of a battery swapping device, which can be used for battery swapping of electric vehicles, especially battery swapping of heavy trucks. The walking device 1 drives the battery swapping device to move along a preset direction. The walking device 1 includes: two guide mechanisms 13 and two groups of walking mechanisms 14 arranged on the battery swapping device at intervals along the walking direction A. The two guide mechanisms 13 are both arranged on one side of the battery swapping device along the walking direction A.

[0078] By setting a guide mechanism 13 on one side of the battery swapping device, the possible conflict caused by the simultaneous guiding action on both sides is avoided, an effective walking guide is formed, the probability of failure is reduced, the battery swapping efficiency is improved, and the number of guide mechanisms 13 is saved; by setting at least two groups of walking mechanisms 14 at intervals along the walking direction A on the battery swapping device, the front and rear ends of the battery swapping device have walking mechanisms 14, the walking is smoother, the driving force is greater, and the walking device 1 has a greater carrying capacity, which can complete the battery swapping task of large batteries and meet the battery swapping operation needs of heavy trucks.

[0079] Among them, Figure 1 As shown, each group of walking mechanisms 14 is provided with two walking wheels 141 and a walking drive mechanism connecting the two walking wheels 141. The walking drive mechanism includes a walking drive motor 142 and a walking transmission shaft 143 connected to the walking drive motor 142. The walking transmission shaft 143 is connected to the two walking wheels 141. The walking drive motor 142 drives the transmission shaft to drive the two walking wheels 141 to rotate so that the walking device 1 can walk. The two walking wheels 141 in the same group are spaced apart on both sides of the battery exchange device along the walking direction A.

[0080] By setting a travel drive mechanism in each group, the driving force of the travel device is stronger, which can ensure that the battery replacement equipment meets the load and transportation requirements of heavy truck batteries. At the same time, compared with using a high-power motor, it can reduce costs and save space. At the same time, the two travel wheels 141 of each group are connected to the same travel drive motor 142, so that the same travel drive motor 142 drives the two travel wheels 141 of the same group at the same time, realizing synchronous rotation, avoiding the travel wheels 141 on both sides of the body from rotating inconsistently, resulting in deviation from the preset travel direction A, which is beneficial to travel guidance and stability.

[0081] Among them, a group of walking mechanisms 14 are respectively provided at the head end and the tail end along the walking direction A of the battery exchange equipment, and there are two groups of walking mechanisms 14 in total. Two guide mechanisms 13 are arranged between the two groups of walking mechanisms 14 along the walking direction A.

[0082] By using two or more guiding mechanisms 13, it is ensured that even if a single guiding mechanism fails, it will not affect the battery swapping equipment from continuing to move along the preset route; by arranging a guiding mechanism 13 at the head end and the tail end of the battery swapping equipment along the walking direction A, a guiding effect is generated at the head end and the tail end respectively, balancing the front and rear guiding forces, which is beneficial to the guiding effect; by arranging two guiding mechanisms 13 between the two groups of walking mechanisms 14 at the head and tail ends along the walking direction A, the middle guiding mechanism 13 is more evenly stressed when it shares the load of the battery swapping equipment with the walking mechanism 14, so that the battery swapping equipment can move more smoothly.

[0083] In other embodiments, the number of guide mechanisms 13 and walking mechanisms 14 can be adjusted accordingly as needed, and the position of the guide mechanism 13 can also be adjusted according to the specific structure and layout requirements. For example, the two guide mechanisms 13 can be respectively set at the head and tail ends of the battery exchange equipment along the walking direction A, on the outside of the two groups of walking mechanisms 14, but not between the head and tail groups of walking mechanisms 14.

[0084] or,

[0085] There may also be only one guiding mechanism 13, which is arranged between the two sets of traveling mechanisms 14 at the head end and the tail end of the battery exchange equipment along the traveling direction A, and the one guiding mechanism 13 simultaneously guides the traveling mechanisms 14 at the head and tail ends.

[0086] Among them, Figure 5 As shown, the guide mechanism 13 includes a guide wheel 131 and a floating component. In this embodiment, the floating component is specifically a compression spring 132, but in other embodiments, the floating component can also be other products that can achieve a floating effect.

[0087] The guide wheel 131 can cooperate with the ground track (not shown in the figure) so that the battery exchange equipment can move along the track, and the guide wheel 131 is connected to the battery exchange equipment through the compression spring 132 so that the guide wheel 131 can float in the up and down directions, so that the guide wheel 131 can generate a force toward the track.

[0088] Through the cooperation between the guide wheel 131 and the track, the walking direction A is limited, and the walking guidance of the guide mechanism 13 to the battery exchange device 2 is realized; it is connected to the battery exchange device 2 through the compression spring 132, and the guide wheel 131 is made to float up and down, which effectively buffers the impact of the guide wheel 131 caused by the battery exchange device 2 when the walking is unstable, or buffers the impact of the guide mechanism 13 on the battery exchange device 2 caused by the unstable walking of the guide wheel 131, so that the walking is more stable and the guide wheel 131 is prevented from being damaged by the impact; at the same time, it can also ensure that the wheel body of the guide wheel 131 can always be in effective contact with the track, which is beneficial to improve the guiding effect.

[0089] Among them, Figure 3 and Figure 4 As shown, along the walking direction A, two guide mechanisms 13 are arranged in the main body frame of the battery exchange device and are located in the two guide mounting plates 11 in the frame. Two guide mounting shafts 12 pass through two transverse mounting holes 133 on the guide mechanism 13 and are connected to the two guide mounting plates 11, so that the guide mechanism 13 is installed on the walking device 1. The walking wheel 141 is arranged on the outside of the guide mechanism 13, so that the movement tracks of the guide wheel 131 and the walking wheel 141 along the walking direction A do not overlap.

[0090] Through reasonable layout, the movement trajectories of the guide wheel 131 and the running wheel 141 along the walking direction A do not overlap, thereby avoiding mutual interference between the guide mechanism 13 and the running wheel 141, which is conducive to smooth walking.

[0091] Among them, Figure 7 As shown, the outer ring of the running wheel 141 is covered with a rubber layer 1411. The rubber layer 1411 has a certain elasticity and a large contact surface with the ground, so that the running wheel 141 can always contact the ground during walking.

[0092] The rubber layer 1411 is wrapped around the outer ring of the running wheel 141 to cushion the up and down movement of the running wheel 141. In other embodiments, the outer ring of the running wheel 141 may also be an elastic sleeve made of other materials. Compared with the running wheel 141 made of rigid material, the elastic sleeve can have a larger contact area with the ground, ensuring that it is always in contact with the ground and has sufficient grip, so that it is not easy to deviate from the predetermined direction when walking.

[0093] The guide wheel 131 and the track are both made of steel, and the friction coefficient of the rubber layer 1411 on the surface of the running wheel 141 is greater than the friction coefficient of the guide wheel 131 .

[0094] The friction coefficient of the walking wheel 141 is configured to be greater than the friction coefficient of the guide wheel 131, so that the grip of the walking wheel 141 on the ground is always greater than the friction between the guide wheel 131 and the track, ensuring that the walking direction A will not be easily disturbed by the fluctuation of the rolling friction of the guide wheel 131, and at the same time avoiding slipping, which is conducive to smooth walking and reduces walking resistance.

[0095] Among them, Figure 5 As shown, the guide wheel 131 includes a wheel hub 1311 and a wheel seat 1312. The wheel hub 1311 is embedded in the wheel seat 1312, and both ends of the central axis of the wheel hub 1311 are fixed on the wheel seat 1312 so that the wheel hub 1311 can roll around the central axis to walk on the track. The compression spring 132 is arranged between the wheel seat 1312 and the battery exchange device 2 and applies a downward force to the wheel seat 1312.

[0096] The wheel hub 1311 is embedded in the wheel seat 1312 to protect the wheel hub 1311; walking is achieved by the rolling of the wheel hub 1311 on the track; the compression spring 132 is set on the plane of the wheel seat 1312 with a large contact surface, so that the compression spring 132 is not easily affected by rolling imbalance and deflection during the floating process, making the buffering effect more stable; the force of the floating component on the wheel seat 1312 or the reaction force of the wheel seat 1312 on the floating component is used to transfer the floating of the wheel seat 1312 between the wheel hub 1311 and the battery exchange device 2, thereby generating a buffering effect and making walking more stable.

[0097] Among them, Figure 6 As shown, the wheel hub 1311 is a groove wheel, which includes a rolling portion 13111 and limiting portions 13112 on both sides thereof. The diameters of the two limiting portions 13112 are larger than the diameter of the rolling portion 13111, and the width of the rolling portion 13111 is larger than the width of the track, so that the limiting portions 13112 are engaged with both sides of the track when the wheel hub 1311 moves on the track.

[0098] Through the groove wheel structure, the wheel hub 1311 is matched with the track, and the moving space of the wheel hub 1311 in the width direction is limited, thereby achieving the guiding effect on the walking direction A; setting the width of the rolling part 13111 to be larger than the width of the track also avoids the wheel hub 1311 and the track from getting stuck, ensuring a certain amount of moving space.

[0099] like Figure 1 and Figure 2 As shown, the traveling device 1 further includes a traveling wheel protection mechanism. In the present embodiment, the traveling wheel protection mechanism is specifically a traveling wheel block 15. However, in other embodiments, the traveling wheel protection mechanism may also adopt other mechanisms that can more effectively protect the traveling wheels.

[0100] The running wheel block 15 is arranged on the outer side of the battery exchange device close to the running wheel 141 and is located along the running direction A toward the adjacent running wheel 141 .

[0101] By setting a traveling wheel stopper 15 on the outer side of the battery exchange device near the traveling wheel 141, along the traveling direction A and toward the traveling wheel 141, when the traveling wheel 141 is damaged, it can be blocked by the traveling wheel stopper 15, thereby protecting other structures of the battery exchange device from damage.

[0102] Among them, the lower end of the running wheel block 15 is not lower than the lower end point of the running wheel 141 and is not higher than the lower edge of the battery exchange device.

[0103] The lower end of the running wheel block 15 is set between the lower edge of the battery swap device and the lower breakpoint of the running wheel 141, so that the running wheel block 15 can avoid interfering with the running of the running wheel 141, and can also play a temporary supporting role when there is a problem with the running wheel and it cannot support the battery swap device, thereby avoiding the bottom surface of the battery swap device from being worn and affecting the function of the battery swap device.

[0104] like Figure 2 As shown, the travel device 1 also includes a braking resistor 16, which is electrically connected to the travel drive motor 142 to consume the kinetic energy generated by the travel mechanism 14 during deceleration, and consumes it in the form of electrical energy through the braking resistor to improve the safety of the motor.

[0105] Among them, the braking resistor 16 is arranged on the outside of the power exchange device close to the travel drive motor 142.

[0106] Setting the brake resistor 16 close to the travel drive motor 142 is beneficial to timely and quickly consume the kinetic energy of the travel drive motor 142 during the deceleration process.

[0107] Example 2

[0108] like Figure 8 As shown, this embodiment provides a battery exchange device 2, which can be used for battery exchange of electric vehicles, especially battery exchange operations of heavy trucks. The battery exchange device 2 includes a basic frame 3, and a battery exchange device (not shown in the figure) installed on the basic frame 3 and a traveling device 1 as in Example 1. The traveling device 1 enables the battery exchange device 2 to be movable so as to travel to a preset position to exchange the battery of the vehicle through the battery exchange device.

[0109] By adopting the above-mentioned walking device 1, the battery exchange equipment 2 improves the walking stability during the battery exchange process, effectively ensures walking along the set path, reduces the probability of failure, and improves the battery exchange efficiency; the structure is compact and the layout is more reasonable; the driving force is greater, and it can adapt to walking under a greater load-bearing capacity, meeting the load-bearing requirements of heavy truck batteries to achieve bottom battery exchange.

[0110] Among them, Figure 8 and Fig. 9As shown, the battery exchange device 2 also includes a lifting device, which includes a lifting drive mechanism, a lifting member, and a lifting transmission mechanism 43 connecting the lifting drive mechanism and the lifting member. In this embodiment, the lifting member is a cam 433. The lifting drive mechanism includes a lifting drive motor 41, and the lifting transmission mechanism 43 includes a lifting transmission shaft 431 and a secondary transmission structure 432. The battery exchange device is connected to the lifting member, that is, the cam 433, which is arranged on the inner side of the basic frame 3. The lifting drive motor 41 drives the lifting transmission shaft 431 to rotate, and transmits the rotational motion to the secondary transmission structure 432 connected to the lifting transmission shaft 431. The secondary transmission structure 432 drives the cam 433 to rotate. During the rotation process, the cam 433 can lift or lower the battery exchange device, so that the battery exchange device can be raised and lowered relative to the basic frame 3, so that the battery exchange device 2 can replace batteries of different heights.

[0111] The battery replacement device is used to replace the battery of the vehicle. The battery replacement device is connected to the cam 433, so that during the battery replacement process, the battery replacement device can cooperate with the vehicle to install or remove the battery by rising, and transfer the removed battery or the battery to be installed by descending. At the same time, the lifting and lowering of the battery replacement device can also enable the battery replacement of heavy trucks with different chassis heights.

[0112] Among them, Figure 8 As shown, the lifting transmission mechanism 43 extends along the walking direction A of the battery exchange device 2 and is arranged on the outside of the basic frame 3, and the guide mechanism 13 is arranged on the inside of the basic frame 3 to prevent the guide mechanism 13 from interfering with the lifting transmission mechanism 43. In other embodiments, the position of the guide mechanism 13 can also be set at other positions of the basic frame 3 that can avoid the lifting transmission mechanism 43. For example, the position of the guide mechanism 13 can also be set at the bottom inside the basic frame 3.

[0113] By arranging the lifting transmission mechanism 43 on the outside of the basic frame 3 and arranging the guide mechanism 13 on the bottom or inside of the basic frame 3, the positions of the guide mechanism 13 and the lifting transmission mechanism 43 on the basic frame 3 do not overlap, avoiding mutual interference, and the structure is compact, which is conducive to the reasonable layout of various components on the battery exchange equipment 2.

[0114] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0115] 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 walking device for a battery swapping device, wherein the walking device drives the battery swapping device to move along a preset direction, characterized in that: The walking device comprises: a guide mechanism and at least two groups of walking mechanisms arranged on the battery exchange device at intervals along the walking direction, wherein the guide mechanism is arranged on one side of the battery exchange device along the walking direction; Each group of the walking mechanisms includes two walking wheels and a walking drive mechanism connecting the two walking wheels, and the walking wheels in the same group are arranged at intervals on both sides of the walking direction; There are at least two guiding mechanisms, and at least one guiding mechanism is respectively provided at the head end and the tail end of the battery exchange equipment along the walking direction; and / or, at least one group of walking mechanisms is respectively provided at the head end and the tail end of the battery exchange equipment along the walking direction, and the guiding mechanism is arranged between the two groups of walking mechanisms along the walking direction.

2. The running device of the battery replacement equipment according to claim 1, characterized in that: The guide mechanism includes a guide wheel and a floating component. The guide wheel can cooperate with the ground track so that the battery exchange device can move along the track, and the guide wheel is connected to the battery exchange device through the floating component so that the guide wheel can float in the up and down directions, so that the guide wheel can generate a force toward the track.

3. The walking device of the battery replacement equipment according to any one of claims 1 to 2, characterized in that: Each group of the walking mechanisms includes two walking wheels, and the movement tracks of the guide wheels of the guide mechanism and the walking wheels along the walking direction do not overlap.

4. The running device of the battery replacement equipment according to claim 3, characterized in that: The friction coefficient of the walking wheel is greater than the friction coefficient of the guide wheel.

5. The running device of the battery replacement equipment according to claim 4, characterized in that: The outer ring of the walking wheel is covered with an elastic sleeve, so that the walking wheel can always contact the ground during walking.

6. The running device of the battery replacement equipment according to claim 2, characterized in that: The guide wheel includes a wheel hub and a wheel seat, the wheel hub is embedded in the wheel seat, and both ends of the central axis of the wheel hub are fixed to the wheel seat so that the wheel hub can roll around the central axis to walk on the track, and the floating component is arranged between the wheel seat and the battery exchange device and applies a downward force to the wheel seat.

7. The running device of the battery replacement equipment according to claim 6, characterized in that: The wheel hub is a groove wheel, which includes a rolling part and limiting parts on both sides thereof. The diameter of the two limiting parts is larger than the diameter of the rolling part, and the width of the rolling part is larger than the width of the track so that the limiting parts are engaged with both sides of the track when the wheel hub moves on the track.

8. The walking device according to claim 1, characterized in that: The walking device also includes a walking wheel protection mechanism, which is arranged on the outer side of the battery exchange device close to the walking wheel and is located along the walking direction toward the adjacent walking wheel.

9. The walking device according to claim 8, characterized in that: The lower end of the running wheel protection mechanism is not lower than the lower end point of the running wheel and is not higher than the lower edge of the battery exchange device.

10. The walking device according to claim 1, characterized in that: The travel device further comprises a braking resistor, which is electrically connected to the travel drive mechanism to consume the kinetic energy generated by the travel drive mechanism during deceleration.

11. The walking device according to claim 10, characterized in that: The braking resistor is arranged outside the power exchange device and close to the travel drive mechanism.

12. A battery replacement device, characterized in that: The battery exchange equipment includes a basic frame, a battery exchange device installed on the basic frame, and a running device as described in any one of claims 1 to 11, wherein the running device enables the battery exchange equipment to be movable so as to travel to a preset position to exchange battery for the vehicle through the battery exchange device.

13. The battery replacement device according to claim 12, characterized in that: The battery exchange equipment also includes a lifting device, which includes a lifting drive mechanism, a lifting piece, and a lifting transmission mechanism connecting the lifting drive mechanism and the lifting piece. The battery exchange device is connected to the lifting piece arranged on the inner side of the basic frame. The lifting drive mechanism provides power to the lifting piece through the lifting transmission mechanism to drive the battery exchange device to be lifted and lowered relative to the basic frame.

14. The battery replacement device according to claim 13, characterized in that: The lifting transmission mechanism extends along the traveling direction of the battery exchange device and is arranged on the outside of the basic frame. The guide mechanism is arranged below or inside the basic frame to prevent the guide mechanism from interfering with the lifting transmission mechanism.

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