Mobile charging system

Abstract

The invention discloses a mobile charging system, and relates to the field of charging, the mobile charging system comprises a charging vehicle and a battery pack, the charging vehicle comprises a vehicle body extending along a first direction, the vehicle body is provided with a bearing surface for bearing the battery pack, and the battery pack is separably arranged on the bearing surface; the battery pack comprises a body and a supporting assembly arranged on the body, the supporting assembly comprises a lifting leg capable of stretching out and drawing back in the second direction relative to the body, and the first direction intersects with the second direction; wherein the lifting leg stretches out and draws back so that the supporting assembly can be switched between the storage state and the unfolding state, when the supporting assembly is in the unfolding state, the body is supported on the lifting leg, the lifting leg and the bottom face of the battery pack define an avoiding space, and the vehicle body can move in the avoiding space in the first direction so that the vehicle body can be driven away from the battery pack; when the supporting assembly is in the storage state, the body is supported on the bearing surface. Idle waiting of the vehicle body can be avoided, and the mobile charging flexibility is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of charging, in particular to a mobile charging system. BACKGROUND

[0002] The charging method of the device to be charged varies with the type of the device and the use environment. Taking an electric vehicle as an example, a common method is to move to a charging pile for charging. However, there are many problems with public charging piles. As the number of electric vehicles rises, the cost of expanding and modifying public charging piles is high, and during peak charging periods, concentrated use will cause a large impact on the load side of the power grid. Therefore, moving a mobile charging vehicle to the electric vehicle becomes a more advantageous choice. This mode can not only realize peak-valley arbitrage and meet the charging needs of vehicle owners, but also can alleviate the impact of fast and super charging on the distribution network with the help of mobile charging and storage integrated batteries.

[0003] The charging vehicle in the prior art adopts an integrated design for the vehicle body and the battery pack. When charging the device to be charged, the charging vehicle needs to move to the location of the device to be charged. Since the battery pack and the vehicle body are inseparable, during the charging process of the device to be charged by the battery pack, the vehicle body can only be idle and wait, and must wait until the charging is completed before carrying the battery pack to the next charging location. The vehicle body is idle and waits for a long time during the charging process, causing resource waste and failing to optimize the utilization of resources. SUMMARY

[0004] The present application aims to solve one of the problems in the related art to some extent. To this end, the present application provides a mobile charging system which can avoid idle waiting of the vehicle body and improve the flexibility of mobile charging.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A mobile charging system, comprising a charging vehicle and a battery pack, the charging vehicle comprising a vehicle body extending along a first direction, the vehicle body having a carrying surface for carrying the battery pack, and the battery pack being separably arranged on the carrying surface; The battery pack comprises a body and a support assembly arranged on the body, the support assembly comprising a lifting leg which can extend and retract relative to the body along a second direction, and the first direction intersects the second direction; The lifting leg extends and retracts to switch the support assembly between a storage state and a deployed state. When the support assembly is in the deployed state, the body is supported by the lifting leg, and the lifting leg and the bottom surface of the battery pack define a space for the vehicle body to move away from the battery pack along the first direction. When the support assembly is in the storage state, the body is supported by the carrying surface.

[0006] In the present application, the charging vehicle transports the battery pack to the device that needs to be charged as a mobile carrier, and the battery pack can store electric energy to provide power to the device to be charged. The battery pack in the present application is detachable, which facilitates quick installation and disassembly to adapt to the charging demand in different scenarios, thereby avoiding the idle waiting of the vehicle body and improving the flexibility of mobile charging. The battery pack further comprises a support assembly for supporting the battery pack body, the support assembly comprising a lifting leg that can be extended and retracted relative to the battery pack body in a second direction (i.e. up and down direction) to support the battery pack body, and enabling the support assembly to be flexibly switched between a storage state and a deployed state. When the support assembly is in the deployed state, the lifting leg is extended and supported on the ground, and the battery pack body is supported on the ground through the telescopic leg, and a space is formed between the lifting leg and the bottom surface of the battery pack. The charging vehicle can move in the space in the first direction, thereby driving away from the battery pack, realizing the separation of the battery pack and the vehicle body, without the need to additionally transport the battery pack to the ground, avoiding the waste of manpower and material resources.

[0007] Optionally, the support assembly comprises a connecting plate and a telescopic rod extending in a third direction, the connecting plate is connected to the body through the telescopic rod, and the lifting leg is arranged at the lower end of the connecting plate, the first direction, the second direction and the third direction are perpendicular to each other.

[0008] The support assembly comprises a connecting plate and a telescopic rod extending in a third direction. The connecting plate serves as an intermediate connecting piece, which is connected to the battery pack body through the telescopic rod, and is connected to the lifting leg, that is, the lifting leg moves left and right with the telescopic rod, thereby approaching or moving away from the battery pack body. The telescopic rod enables the lifting leg to be finely adjusted in the left and right directions, so as to avoid the vehicle body interfering with the extension of the lifting leg when lifting up and down, and also enables the battery pack to adjust the landing position to adapt to different ground conditions or charging demands.

[0009] Optionally, the support assembly comprises a telescopic cylinder for driving the telescopic rod and a lifting cylinder for driving the lifting leg, the telescopic rod is connected to the output end of the telescopic cylinder, and the lifting leg is connected to the output end of the lifting cylinder.

[0010] The lifting leg is arranged at the lower end of the connecting plate, and the lifting action is driven by the lifting cylinder. The lifting cylinder and the telescopic cylinder are independent of each other, so that the lifting leg can realize the up and down and left and right movements. The lifting action is realized by the driving of the telescopic cylinder. Specifically, the movement of the telescopic rod and the lifting leg is driven by adjusting the air pressure or flow in the lifting cylinder and the telescopic cylinder.

[0011] Optionally, a plurality of clamping grooves are arranged on both sides of the bearing surface along the first direction, and the plurality of lifting legs are arranged on both sides of the body along the first direction; a plurality of clamping plates corresponding to the plurality of clamping grooves are connected to the bottom of the plurality of lifting legs; when the supporting assembly is in the storage state, the clamping plates are clamped in the clamping grooves.

[0012] A plurality of clamping grooves are arranged on both sides of the bearing surface along the first direction, and the clamping plates correspond to the bottom of the lifting legs. When the supporting assembly is in the storage state, the clamping plates are clamped in the clamping grooves, thereby achieving the connection between the battery pack and the charging vehicle. The shape and size of the clamping grooves and the clamping plates should be adapted to ensure stable clamping.

[0013] Optionally, the clamping plate on the side closer to the vehicle body is configured to be preferentially clamped into the corresponding clamping groove, and the body is driven to move on the bearing surface of the vehicle body by retracting the telescopic rod until the remaining clamping plates on the other side of the body are clamped into the corresponding clamping grooves.

[0014] When the battery pack needs to be installed on the charging vehicle, the clamping plate on the side closer to the vehicle body is preferentially clamped into the corresponding clamping groove. Specifically, the telescopic rod connected to the clamping plate is controlled to retract, and the clamping plate at the bottom of the lifting leg is driven to move towards the vehicle body (clamping groove) until the clamping plate is clamped into the clamping groove. Subsequently, the telescopic rod on the side can be continuously controlled to retract, and at this time, since the clamping plate is clamped into the clamping groove, the telescopic rod continues to retract, thereby dragging the body of the battery pack to move towards the clamping plate, so as to drive the body of the battery pack to adjust the relative position with the vehicle body until the clamping plates on the other side are also clamped into the corresponding clamping grooves, thereby achieving the connection between the battery pack and the charging vehicle and ensuring that the battery pack can be placed vertically on the vehicle body. This simplifies the installation process of the battery pack and improves the operation efficiency.

[0015] Optionally, the mobile charging system comprises a control unit, and a detection switch electrically connected to the control unit is arranged in the clamping groove, and the clamping plate triggers the detection switch when the clamping plate is installed into the clamping groove.

[0016] The detection switch is arranged in the clamping groove and electrically connected to the control unit. When the clamping plate is installed into the clamping groove, the detection switch is triggered. The detection switch transmits the signal to the control unit, and the control unit judges whether the battery pack is correctly installed according to the signal. If the installation is correct, the control unit issues an instruction to allow the charging vehicle to perform subsequent operations; if the installation is incorrect or there is an abnormality, the control unit issues an alarm signal to remind the operator to check and adjust, thereby achieving real-time monitoring and intelligent control of the installation state of the battery pack.

[0017] Optionally, the connecting plates are arranged on both sides of the body, and installation grooves corresponding to the connecting plates are arranged on the outer surface of the body, and the connecting plates are embedded in the installation grooves when the supporting assembly is in the storage state.

[0018] The connecting plates are arranged on both sides of the battery pack body for connecting the telescopic rods and the lifting legs. Meanwhile, installation grooves corresponding to the connecting plates are formed on the outer surface of the body. When the support assembly is in the storage state, the connecting plates are embedded in the installation grooves, so that the appearance of the battery pack is more neat and beautiful, and the risk of damage of the connecting plates due to bumping or collision during driving is reduced.

[0019] Optionally, the charging vehicle comprises a vehicle head arranged at the front end of the vehicle body, and the mobile charging system further comprises a positioning mechanism, the positioning mechanism comprising an elastic rod and a micro switch matched with the elastic rod, the elastic rod being arranged at one side of the vehicle head close to the vehicle body, and the micro switch being arranged at one side of the body close to the vehicle head, when the charging vehicle retreats to the preset position, the elastic rod is pressed and triggers the micro switch to control the charging vehicle to stop moving.

[0020] The elastic rod is arranged at one side of the vehicle head of the charging vehicle close to the vehicle body, and the micro switch is arranged at one side of the body close to the vehicle head. When the charging vehicle retreats to the preset position, the elastic rod is extruded by the body of the battery pack and deforms. When the deformation reaches a certain degree, the elastic rod triggers the micro switch. The micro switch transmits the signal of the micro switch to the control part, and the control part issues an instruction according to the signal to control the charging vehicle to stop moving, so that the charging vehicle can stop accurately at the preset position.

[0021] Optionally, the bearing surface is provided with a plurality of rollers, the rollers at least partially protrude from the bearing surface, and the axis direction of the rollers is perpendicular to the first direction.

[0022] The rollers at least partially protrude from the bearing surface, and the axis direction of the rollers is perpendicular to the first direction. Therefore, when the battery pack moves on the bearing surface, the frictional resistance can be reduced by relying on the rolling of the rollers. When it is necessary to move the battery pack, only a small external force needs to be applied to make the relative bearing surface slide, so that the vehicle body can easily drive away from the battery pack.

[0023] Optionally, the mobile charging system further comprises a guide mechanism, the guide mechanism comprising a guide strip arranged on the bearing surface of the vehicle body and a guide groove arranged at the bottom of the body, the guide strip extending along the first direction and being matched with the guide groove.

[0024] The guide strip is arranged on the bearing surface of the vehicle body and extends along the first direction, and is a long strip-shaped protruding structure (such as a wedge, a rectangle or a trapezoid). The guide groove is arranged at the bottom of the body and is matched with the shape of the guide strip, for accommodating the guide strip and limiting the relative movement direction. When the charging vehicle retreats or the battery pack is placed on the bearing surface, the guide strip slides into the guide groove, guiding the battery pack to move along the preset path, and in addition, the guide strip can also prevent the battery pack from being displaced due to vibration or external force during charging.

[0025] The features and advantages of the present application will be more apparent from the following detailed description along with the accompanying drawings in which: BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be further described with reference to the drawings in which: Figure 1 Fig. 1 is a structural schematic diagram of a mobile charging system in an embodiment of the present application; Figure 2 Fig. 2 is a structural schematic diagram of the mobile charging system when a supporting assembly is in an unfolded state; Figure 3 Fig. 3 is an enlarged schematic diagram of A in Fig. 2; Figure 1 Fig. 4 is a structural schematic diagram of the mobile charging system when a clamping plate is clamped with a clamping groove; Figure 4 Fig. 5 is an enlarged schematic diagram of B in Fig. 4; Figure 5 Figure 4 Fig. 6 is a structural schematic diagram of the mobile charging system when a telescopic rod is extended; Figure 6 Fig. 7 is a structural schematic diagram of the mobile charging system when a vehicle body drives away from a battery pack; Figure 7 Fig. 8 is an enlarged schematic diagram of C in Fig. 7; Figure 8 Fig. 9 is a top view of the mobile charging system. Figure 7 Fig. 10 is a structural schematic diagram of the mobile charging system when a vehicle body drives away from a battery pack.

[0027] In the drawings: 1, vehicle body; 11, bearing surface; 111, clamping groove; 1111, detection switch; 112, roller; 2, body; 3, supporting assembly; 31, lifting leg; 32, connecting plate; 33, telescopic rod; 34, telescopic cylinder; 35, lifting cylinder; 36, clamping plate; 4, vehicle head; 41, elastic rod; S1, first direction; S2, second direction; S3, third direction. DETAILED DESCRIPTION

[0028] Embodiments of the present application will be described in detail below with reference to examples shown in the drawings, in which the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions throughout. Based on the embodiments in the embodiments, it is intended to explain the present application, and cannot be understood as a limitation of the present application.

[0029] ​The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0030] Example: like Figures 1 to 5 As shown, this embodiment provides a mobile charging system, including a charging vehicle and a battery pack. The charging vehicle includes a vehicle body 1 extending along a first direction S1. The vehicle body 1 has a bearing surface 11 for carrying the battery pack, and the battery pack is detachably disposed on the bearing surface 11. The battery pack includes a body 2 and a support component 3 disposed on the body 2. The support component 3 includes a lifting leg 31 that can extend and retract relative to the body 2 along a second direction S2. The first direction S1 intersects the second direction S2. The lifting leg 31 extends and retracts to switch the support component 3 between a retracted state and an extended state. When the support component 3 is in the extended state, the body 2 is supported by the lifting leg 31. The lifting leg 31 and the bottom surface of the battery pack define a clearance space, and the vehicle body 1 can move along the first direction S1 within the clearance space to move the vehicle body 1 away from the battery pack. When the support component 3 is in the retracted state, the body 2 is supported by the bearing surface 11.

[0031] To address the charging needs of electric vehicles, electrical equipment, and other devices located outdoors or in environments where direct grid connection is not possible, this embodiment provides a mobile charging system comprising a charging vehicle and a battery pack. The charging vehicle acts as a mobile carrier, transporting the battery pack to the device requiring charging. The battery pack stores electrical energy to provide power to the device. The vehicle body 1 extends along a first direction S1 (i.e., the longitudinal direction), ensuring sufficient length to accommodate the battery pack and provide a stable mobile platform. The top surface of the vehicle body 1 has a bearing surface 11, on which the battery pack can be securely mounted during the vehicle's movement. In existing technologies, the battery pack is inseparable from the vehicle body 1. Therefore, during the charging process, the vehicle body 1 is idle and must wait until charging is complete before it can move to the next charging location. This prolonged idleness during charging results in resource waste. In this embodiment, the battery pack is detachable, facilitating quick installation and removal to adapt to different charging needs, thus avoiding idleness and improving the flexibility of mobile charging.

[0032] In addition, the battery pack in the embodiment further comprises a support assembly 3 for supporting the battery pack body 2, the support assembly 3 comprises lifting legs 31 which are retractable relative to the battery pack body 2 along a second direction S2 (i.e. the up-down direction) to achieve the purpose of supporting the battery pack body 2, and enable the support assembly 3 to be flexibly switched between a storage state and a deployed state. When the support assembly 3 is in the deployed state, the lifting legs 31 are extended and supported on the ground, and the battery pack body 2 is supported on the ground by the retractable legs, while a space is formed between the lifting legs 31 and the bottom surface of the battery pack. The charging vehicle can move in the first direction S1 in the space, thereby driving away from the battery pack, achieving independent use or replacement of the battery pack. When the support assembly 3 is in the storage state, the lifting legs 31 are retracted, and the battery pack body 2 is directly supported on the load-bearing surface 11 of the charging vehicle, facilitating transportation and storage. The form switching of the support assembly 3 enables the battery pack to play a role in different scenarios. As shown in Figure 7 and Figure 8 When the support assembly 3 is in the deployed state, a space is formed, the battery pack can be supported on the ground and used independently to provide charging services for the equipment, and the charging vehicle can drive away from the battery pack through the space, without the need to additionally carry the battery pack to the ground, avoiding waste of manpower and resources; in the storage state, it is convenient for transportation and storage, saving space.

[0033] As shown in Figure 2 and Figure 6 The support assembly 3 comprises a connecting plate 32 and a telescopic rod 33 which is retractable along a third direction S3, the connecting plate 32 is connected to the body 2 by the telescopic rod 33, and the lifting legs 31 are arranged at the lower end of the connecting plate 32, the first direction S1, the second direction S2 and the third direction S3 are perpendicular to each other.

[0034] In the embodiment, the third direction S3 is the left-right direction. The support assembly 3 comprises a connecting plate 32 and an extension rod 33 extending in the third direction S3. The connecting plate 32 serves as an intermediate connecting piece and is connected to the battery pack body 2 through the extension rod 33, and is connected to the lifting leg 31, that is, the lifting leg 31 moves left and right with the extension rod 33, thereby moving close to or away from the battery pack body 2. The extension rod 33 enables the lifting leg 31 to be finely adjusted in the left-right direction, so as to avoid the vehicle body 1 when lifting up and down, to avoid the interference of the vehicle body 1 with the extension of the lifting leg 31, and also to enable the battery pack to adjust the landing position, to adapt to different ground conditions or charging requirements. When it is necessary to adjust the position of the battery pack, it can be realized by controlling the extension amount of the extension rod 33, which is simple and convenient to operate. It should be noted that when the support assembly 3 is in the unfolded state, the distance between the connecting plates 32 on the opposite sides of the battery pack body 2 should be greater than the size of the vehicle body 1 in the third direction S3 (i.e. the width of the vehicle body 1), so as to avoid the interference of the vehicle body 1 with the extension of the lifting leg 31 at the lower end of the connecting plate 32; when in the storage state, the distance between the connecting plates 32 on the opposite sides of the battery pack body 2 should be less than the width of the vehicle body 1, so as to facilitate transportation and storage, and save space.

[0035] The support assembly 3 comprises an extension cylinder 34 for driving the extension rod 33 and a lifting cylinder 35 for driving the lifting leg 31, the extension rod 33 is connected to the output end of the extension cylinder 34, and the lifting leg 31 is connected to the output end of the lifting cylinder 35.

[0036] In the embodiment, the lifting leg 31 is arranged at the lower end of the connecting plate 32, and the lifting action is driven by the lifting cylinder 35. The lifting cylinder 35 and the extension cylinder 34 move independently of each other, so that the lifting leg 31 can move up and down and left and right. The lifting action is realized by driving the extension cylinder 34. Specifically, the movement of the extension rod 33 and the lifting leg 31 is driven by adjusting the air pressure or flow rate in the lifting cylinder 35 and the extension cylinder 34. In addition, an anti-skid pad can be arranged at the bottom of the lifting leg 31 to increase the friction with the ground and improve the support stability. In other embodiments, a position sensor can also be arranged on the lifting leg 31 and / or the extension rod 33, for real-time monitoring of the state of the support assembly 3, to ensure the accuracy and safety of the movement of the battery pack and the support assembly 3.

[0037] A plurality of clamping grooves 111 are formed on both sides of the bearing surface 11 along the first direction S1, and the body 2 is provided with a lifting leg 31 on both sides along the first direction S1; a plurality of clamping plates 36 corresponding to the plurality of clamping grooves 111 are connected to the bottoms of the plurality of lifting legs 31, and the clamping plates 36 are clamped in the clamping grooves 111 when the support assembly 3 is in the storage state.

[0038] In the embodiment, the bearing surface 11 is provided with a plurality of clamping grooves 111 on both sides along the first direction S1, and the clamping grooves 111 correspond to the clamping plates 36 at the bottom of the lifting legs 31. When the support assembly 3 is in the storage state, the clamping plates 36 are clamped into the clamping grooves 111, thereby realizing the connection between the battery pack and the charging vehicle. The shape and size of the clamping grooves 111 and the clamping plates 36 should be adapted to ensure stable clamping. In other embodiments, in order to enhance the stability of the clamping, the clamping grooves 111 can also be equipped with locking mechanisms such as spring buckles, etc., to prevent the battery pack from accidentally falling off during driving. The cooperation of the clamping grooves 111 and the clamping plates 36 realizes the connection between the battery pack and the charging vehicle. When it is necessary to install or dismount the battery pack, it is only necessary to control the movement of the telescopic rods 33 and the lifting legs 31, so that the clamping plates 36 are clamped into or out of the corresponding clamping grooves 111, thereby simplifying the installation and dismounting process of the battery pack and improving the operation efficiency. In addition, this structure also facilitates the maintenance and replacement of the battery pack.

[0039] The clamping plate 36 on the side close to the vehicle body 1 is configured to be preferentially clamped into the corresponding clamping groove 111, and the body 2 is driven to move on the bearing surface 11 of the vehicle body 1 by the retraction of the telescopic rod 33, until the remaining clamping plates 36 on the other side of the body 2 are clamped into the corresponding remaining clamping grooves 111.

[0040] In the embodiment, when it is necessary to install the battery pack on the charging vehicle, the clamping plate 36 on the side close to the vehicle body 1 is preferentially clamped into the corresponding clamping groove 111. Specifically, the telescopic rod 33 connected to the clamping plate 36 on the side is controlled to retract, so that the clamping plate 36 at the bottom of the lifting leg 31 moves towards the vehicle body 1 (clamping groove 111) until the clamping plate 36 is clamped into the clamping groove 111. Subsequently, the telescopic rod 33 on the side can continue to be controlled to retract, and at this time, since the clamping plate 36 is clamped into the clamping groove 111, the continuous retraction of the telescopic rod 33 will drag the body 2 of the battery pack to move towards the clamping plate 36, so as to drive the body 2 of the battery pack to adjust the relative position with the vehicle body 1, until the clamping plate 36 on the other side is also clamped into the corresponding clamping groove 111, thereby realizing the connection between the battery pack and the charging vehicle and ensuring that the battery pack can be placed vertically on the vehicle body 1, thereby simplifying the installation process of the battery pack and improving the operation efficiency.

[0041] The mobile charging system comprises a control unit, and a detection switch 1111 is arranged in the clamping groove 111 and electrically connected to the control unit, and the clamping plate 36 is clamped into the clamping groove 111 to trigger the detection switch 1111.

[0042] In this embodiment, the mobile charging system further comprises a control unit and a detection switch 1111. The control unit is responsible for receiving and processing signals from the detection switch 1111 and issuing control instructions according to the preset program. The detection switch 1111 is arranged in the card slot 111 and is electrically connected with the control unit. When the card plate 36 is installed into the card slot 111, the detection switch 1111 will be triggered. The detection switch 1111 transmits this signal to the control unit, and the control unit determines whether the battery pack is installed correctly according to the signal. If it is installed correctly, the control unit issues an instruction to allow the charging vehicle to perform subsequent operations; if it is not installed correctly or there is an abnormality, the control unit issues an alarm signal to remind the operator to check and adjust, realizing real-time monitoring and intelligent control of the installation state of the battery pack, and improving the automation degree and safety of the system. During the installation of the battery pack, the system can automatically detect the installation state and timely remind the operator to adjust, preventing safety accidents caused by improper installation. At the same time, the intelligent control method also improves the operation convenience and efficiency of the system. Specifically, the detection switch 1111 can be an inductive proximity switch, a capacitive proximity switch, or a photoelectric proximity switch, etc., which will not be described here.

[0043] Both sides of the body 2 are provided with connecting plates 32, and the outer surface of the body 2 is provided with mounting grooves corresponding to the connecting plates 32. When the support assembly 3 is in the storage state, the connecting plates 32 are embedded in the mounting grooves.

[0044] In this embodiment, the battery pack body 2 is provided with connecting plates 32 on both sides for connecting the telescopic rods 33 and the lifting legs 31. At the same time, the outer surface of the body 2 is provided with mounting grooves corresponding to the connecting plates 32. When the support assembly 3 is in the storage state, the connecting plates 32 are embedded in the mounting grooves, making the appearance of the battery pack more neat and beautiful, and also reducing the risk of damage to the connecting plates 32 due to bumps or collisions during driving. In addition, a buffer material can also be arranged in the mounting groove to absorb the vibration and impact during driving, protecting the connecting plates 32 from being damaged.

[0045] The charging vehicle comprises a vehicle head 4 arranged at the front end of the vehicle body 1, and the mobile charging system further comprises a positioning mechanism comprising an elastic rod 41 and a micro switch cooperating with the elastic rod 41. The elastic rod 41 is arranged on the side of the vehicle head 4 close to the vehicle body 1, and the micro switch is arranged on the side of the body 2 close to the vehicle head 4. When the charging vehicle retreats to the preset position, the elastic rod 41 is pressed and triggers the micro switch to control the charging vehicle to stop moving.

[0046] In the embodiment, the positioning mechanism comprises an elastic rod 41 and a micro switch matched with the elastic rod 41. The elastic rod 41 is arranged on the side of the charging vehicle head 4 close to the vehicle body 1, and the micro switch is arranged on the side of the battery pack body 2 close to the head 4. When the charging vehicle retreats to the preset position, the elastic rod 41 will be deformed by the extrusion of the battery pack body 2. When the deformation reaches a certain degree, the elastic rod 41 will trigger the micro switch. The micro switch transmits a signal to the control unit, and the control unit issues an instruction according to the signal to control the charging vehicle to stop moving, thereby ensuring that the charging vehicle can stop accurately at the preset position. Therefore, through the cooperation of the elastic rod 41 and the micro switch, the charging vehicle can automatically stop at the preset position, preventing collision accidents caused by excessive retreat. At the same time, this positioning method is simple and reliable, easy to implement and maintain, and reduces the overall cost.

[0047] As shown in Figure 7 and Figure 8 , the bearing surface 11 is provided with a plurality of rollers 112, which at least partially protrude from the bearing surface 11, and the axis direction of the rollers 112 is perpendicular to the first direction S1.

[0048] In the embodiment, the rollers 112 at least partially protrude from the bearing surface 11, and the axis direction of the rollers 112 is perpendicular to the first direction S1. Therefore, when the battery pack moves on the bearing surface 11, it can rely on the rolling of the rollers 112 to reduce the frictional resistance. When it is necessary to move the battery pack, only a small external force needs to be applied to make it slide relative to the bearing surface 11, so that the vehicle body 1 can easily drive away from the battery pack. Specifically, in the embodiment, the plurality of rollers 112 are distributed on the middle region of the bearing surface 11, which ensures the stability of the battery pack during movement. At the same time, the rolling action of the rollers 112 also reduces the wear between the battery pack and the bearing surface 11, prolonging the service life.

[0049] The mobile charging system further comprises a guide mechanism, which comprises a guide strip arranged on the bearing surface 11 of the vehicle body 1 and a guide groove arranged at the bottom of the body 2, the guide strip extending along the first direction S1 and being matched with the guide groove.

[0050] In the embodiment, the guide strip is arranged on the bearing surface 11 of the vehicle body 1 and extends along the first direction S1, which is a long strip-shaped protruding structure (such as a wedge, a rectangle or a trapezoid). The guide groove is arranged at the bottom of the battery pack body 2 and is matched with the shape of the guide strip, used to accommodate the guide strip and limit the relative movement direction. When the charging vehicle retreats or the battery pack is placed on the bearing surface 11, the guide strip slides into the guide groove, guiding the battery pack to move along the preset path, and in addition, the guide strip can also prevent the battery pack from being displaced due to vibration or external force during charging.

[0051] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that the present application includes but is not limited to the contents described in the above specific embodiments and the drawings. Any modification not deviating from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A mobile charging system, comprising a charging vehicle and a battery pack, characterized in that, The charging vehicle includes a vehicle body (1) extending along a first direction (S1), the vehicle body (1) having a bearing surface (11) for carrying the battery pack, the battery pack being detachably disposed on the bearing surface (11); The battery pack includes a body (2) and a support assembly (3) disposed on the body (2). The support assembly (3) includes a lifting leg (31) that can extend and retract relative to the body (2) along a second direction (S2), where the first direction (S1) intersects the second direction (S2). The lifting leg (31) extends and retracts to allow the support assembly (3) to switch between a retracted state and an extended state. When the support assembly (3) is in the extended state, the body (2) is supported by the lifting leg (31). The lifting leg (31) and the bottom surface of the battery pack define a clearance space. The vehicle body (1) can move along the first direction (S1) within the clearance space to allow the vehicle body (1) to drive away from the battery pack. When the support assembly (3) is in the retracted state, the body (2) is supported by the bearing surface (11).

2. The mobile charging system according to claim 1, characterized in that, The support assembly (3) includes a connecting plate (32) and a telescopic rod (33) that extends and retracts along a third direction (S3). The connecting plate (32) is connected to the body (2) through the telescopic rod (33). The lifting leg (31) is located at the lower end of the connecting plate (32). The first direction (S1), the second direction (S2) and the third direction (S3) are perpendicular to each other.

3. The mobile charging system according to claim 2, characterized in that, The support assembly (3) includes a telescopic cylinder (34) for driving the telescopic rod (33) and a lifting cylinder (35) for driving the lifting leg (31). The telescopic rod (33) is connected to the output end of the telescopic cylinder (34), and the lifting leg (31) is connected to the output end of the lifting cylinder (35).

4. The mobile charging system according to claim 2, characterized in that, The bearing surface (11) has multiple slots (111) on both sides along the first direction (S1), and the body (2) has lifting legs (31) on both sides along the first direction (S1); the bottom of the multiple lifting legs (31) is connected to a snap-fit ​​plate (36) corresponding to the multiple slots (111). When the support component (3) is in the storage state, the snap-fit ​​plate (36) snaps into the slot (111).

5. The mobile charging system according to claim 4, characterized in that, The snap-fit ​​plate (36) on the side closer to the vehicle body (1) is configured to preferentially enter its corresponding snap-fit ​​slot (111). The retraction of the telescopic rod (33) drives the body (2) to move on the bearing surface (11) of the vehicle body (1) until the remaining snap-fit ​​plates (36) on the other side of the body (2) enter their corresponding remaining snap-fit ​​slots (111).

6. The mobile charging system according to claim 4, characterized in that, The mobile charging system includes a control unit, and a detection switch (1111) electrically connected to the control unit is also provided in the card slot (111). The detection switch (1111) is triggered when the card plate (36) is installed in the card slot (111).

7. The mobile charging system according to claim 2, characterized in that, The connecting plate (32) is provided on both sides of the main body (2). The outer surface of the main body (2) is provided with a mounting groove corresponding to the connecting plate (32). When the support component (3) is in the storage state, the connecting plate (32) is embedded in the mounting groove.

8. The mobile charging system according to any one of claims 1-6, characterized in that, The charging vehicle includes a front end (4) located at the front end of the vehicle body (1). The mobile charging system also includes a positioning mechanism, which includes an elastic rod (41) and a micro switch that cooperates with the elastic rod (41). The elastic rod (41) is located on the side of the front end (4) near the vehicle body (1), and the micro switch is located on the side of the main body (2) near the front end (4). When the charging vehicle moves backward to a preset position, the elastic rod (41) is pressed and triggers the micro switch to control the charging vehicle to stop moving.

9. The mobile charging system according to any one of claims 1-6, characterized in that, The bearing surface (11) is provided with a plurality of rollers (112), the rollers (112) protruding at least partially from the bearing surface (11), and the axial direction of the rollers (112) is perpendicular to the first direction (S1).

10. The mobile charging system according to any one of claims 1-6, characterized in that, The mobile charging system also includes a guide mechanism, which includes a guide bar disposed on the bearing surface (11) of the vehicle body (1) and a guide groove disposed at the bottom of the body (2). The guide bar extends along the first direction (S1) and is adapted to the guide groove.

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