Automatic charging car

Abstract

The present invention relates to the field of charging of new energy electric vehicles, and specifically to a trolley for automatic charging of new energy electric vehicles, including a traction trolley and a battery trolley, the traction trolley is provided with a traction connector, corresponding to the traction connector, the battery trolley is provided with a battery connector, the traction connector and the battery connector cooperate to connect the traction trolley and the battery trolley, the traction trolley is provided with a mechanical arm, the battery trolley is provided with an automatic retractable cable for connecting the charging port of the electric vehicle, the width of the battery trolley is less than the width between the two front wheels and the two rear wheels of the electric vehicle, and the height of the battery trolley is less than the height of the chassis of the electric vehicle. The present invention adopts a separate structure, so that the originally integrated AGV charging trolley is divided into two parts, the traction trolley and the battery trolley, to avoid idle waste of the traction part of the integrated AGV charging trolley, and the battery trolley and the traction trolley are flattened so that the battery trolley can enter the bottom of the electric vehicle for charging, avoiding the problem of large space occupied by the traditional charging trolley.

Description

Technical Field

[0001] The present invention relates to the field of new energy electric vehicle charging, and in particular to a small vehicle for automatic charging of new energy electric vehicles. Background Art

[0002] With the popularity of electric vehicles, charging and battery replacement have become the two main ways to replenish power for power batteries. Charging refers to the use of charging piles to charge the power batteries of electric vehicles that are out of power. The current charging method basically uses charging piles. If a charging pile is built for each parking space, it will greatly increase the construction cost; if a large number of new energy exclusive parking spaces are set up, it will cause a huge waste of parking space resources in commercial areas with tight parking spaces and areas with large traffic.

[0003] In addition to charging piles, there are also some automatically charging AGV carts, but their size is too large and they take up a large space during the charging process. At the same time, each charging cart has its own robotic arm, which is too expensive.

[0004] Based on the above reasons, it is urgent to develop an AGV automatic charging vehicle that occupies a small space and has low cost.

[0005] Public Content

[0006] In view of the above, it is necessary to provide an automatic charging cart so that the charging cart can charge the vehicle directly under the electric vehicle, reducing the space occupancy rate, and one tractor can dock several battery carts, saving the cost of using the automatic charging cart.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] An automatic charging trolley comprises a traction trolley and a battery trolley. The traction trolley is provided with a traction connector corresponding to the traction connector. The battery trolley is provided with a battery connector. The traction connector and the battery connector cooperate to connect the traction trolley and the battery trolley. The traction trolley is provided with a mechanical arm. The battery trolley is provided with an automatically retractable cable for connecting to a charging port of an electric vehicle. The width of the battery trolley is smaller than the width between the two front wheels and the two rear wheels of the electric vehicle. The height of the battery trolley is smaller than the height of a chassis of the electric vehicle.

[0009] Among them, the traction connecting part includes a traction seat and a traction signal port fixed to the traction seat, the battery connecting part includes a traction hook and a battery signal port fixed to the traction hook, the traction signal port and the battery signal port are signal connected, the traction seat and the traction hook cooperate to connect the traction trolley and the battery trolley, and connect the traction signal port and the battery signal port.

[0010] The traction seat comprises a fixed seat, a slewing bearing and a signal seat. The outer ring of the slewing bearing is fixedly connected to the fixed seat, and the signal seat is fixedly connected to the inner ring of the slewing bearing.

[0011] Among them, the traction connecting part has a door lock mechanism, which includes a lock tongue and a posture return spring. The lock tongue is hinged to a fixed seat, one end of the posture return spring is fixed to the traction seat, and the other end of the posture return spring is fixed to one end of the lock tongue. The other end of the lock tongue is an inclined surface, and the lock tongue cooperates with the lock hook to connect the traction connecting part and the battery connecting part.

[0012] Among them, a plurality of teeth are arranged on one side of the lock tongue, and the fixed seat is rotatably connected with a gear, and the teeth of the lock tongue are meshed with the gear.

[0013] Among them, the signal seat is provided with a limit block, and corresponding to the limit block, the traction hook is provided with a limit baffle, and the limit baffle and the limit block cooperate to limit the position of the traction hook extending into the traction seat.

[0014] Among them, there is an automatic retractable cable on each side of the battery cart.

[0015] Among them, the battery trolley is provided with a steering wheel, and the traction trolley is provided with a vector steering wheel.

[0016] Among them, a sliding device is provided on the side of the traction trolley along the length direction of the traction trolley, and the mechanical arm is installed on the sliding device.

[0017] Among them, the robotic arm is a six-axis robotic arm.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention adopts a separate structure, so that the original integrated AGV charging trolley is divided into a traction trolley and a battery trolley. The traction trolley is responsible for taking the battery trolley to the location of the electric vehicle that needs to be charged for charging, and then it can serve other trolleys. The battery trolley is only responsible for carrying the battery, avoiding the idle waste of the traction part of the integrated AGV charging trolley. In addition, the trolley has also changed the traditional structure. The battery trolley and the traction trolley are flattened so that the battery trolley can enter the bottom of the electric vehicle for charging, avoiding the problem of the traditional charging trolley occupying a large space. The connection part adopts two methods: hard connection and soft connection. The bearing is used for steering. The signal connection can also be performed without affecting the steering. The charging cable of the battery trolley adopts an automatic retraction device to avoid the loss caused by the cable being exposed to the outside. The present invention changes the main structure of the traditional AGV charging trolley, reduces the use cost, avoids the waste of resources, and reduces the space occupied. At the same time, it combines the advantages of soft and hard connection, transmits signals while the traction hook is connected, and adopts automatic retractable cables to solve the problem of shortened life caused by long-term exposure of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods, the drawings required for use in the description of the implementation methods will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the automatic charging vehicle of the present invention from one angle.

[0022] Figure 2 It is a schematic diagram of the structure of the automatic charging vehicle of the present invention in use state.

[0023] Figure 3 It is a schematic diagram of the structure of the automatic charging vehicle of the present invention in the state of use when the mechanical arm removes the charging head.

[0024] Figure 4 It is a structural schematic diagram of a charging posture of the automatic charging vehicle of the present invention.

[0025] Figure 5 It is a structural schematic diagram of another charging posture of the automatic charging vehicle of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the traction trolley of the automatic charging trolley of the present invention.

[0027] Figure 7 It is a schematic diagram of the structure of the mechanical arm of the automatic charging vehicle of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the battery trolley of the automatic charging trolley of the present invention.

[0029] Fig. 9 It is a schematic diagram of the overall cross-sectional structure of the automatic charging vehicle of the present invention.

[0030] Fig.10 It is a schematic cross-sectional structure diagram of the connection state of the traction connector and the battery connector of the automatic charging trolley of the present invention.

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the traction connecting member and the battery connecting member of the automatic charging trolley of the present invention.

[0032] Fig.12 It is a three-dimensional structural schematic diagram of the traction connecting member and the battery connecting member of the automatic charging vehicle of the present invention from another angle.

[0033] Fig.13It is a structural schematic diagram of the connection state of the traction connecting member and the battery connecting member of the automatic charging trolley of the present invention.

[0034] Fig.14 It is a schematic diagram of the exploded structure of the traction connecting part of the automatic charging trolley of the present invention.

[0035] Fig.15 It is a three-dimensional structural schematic diagram of the automatic retractable cable of the automatic charging vehicle of the present invention.

[0036] Fig.16 It is a three-dimensional structural schematic diagram of the automatic retractable cable of the automatic charging vehicle of the present invention from another angle.

[0037] Fig.17 It is a schematic diagram of the combined structure of the charging head of the automatic telescopic cable of the automatic charging trolley of the present invention and the clamp end of the mechanical arm.

[0038] Fig.18 It is a structural schematic diagram of a charging head of an automatically retractable cable of an automatic charging vehicle according to the present invention.

[0039] Fig.19 It is a structural schematic diagram of the charging head of the automatic retractable cable of the automatic charging vehicle of the present invention from another angle.

[0040] Main component symbols

[0041]

[0042] The following specific implementations will further illustrate the present disclosure in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the present disclosure is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present disclosure, and the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0045] In each embodiment, for the convenience of description and not to limit the present disclosure, the term "connection" used in the patent specification and claims of the present disclosure is not limited to physical or mechanical connection, but may include electrical connection, whether direct or indirect. "Up", "down", "below", "left", "right", etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

[0046] like Figure 1 As shown in FIG. 1 , the automatic charging trolley includes a traction trolley 1 and a battery trolley 2. Figure 6 , Figure 8 , Fig.10 As shown, the traction trolley 1 includes a traction trolley body 12, and the traction trolley body 12 is provided with a traction connection member 13. Corresponding to the traction connection member 13, the battery trolley 2 is provided with a battery connection member 23. The traction connection member 13 and the battery connection member 23 cooperate to connect the traction trolley 1 and the battery trolley 2. Figure 7 The traction trolley body 12 is provided with a mechanical arm 11, which is a six-axis mechanical arm. A sliding device is provided on the side of the traction trolley body 12 along the length direction of the traction trolley body 12, and the mechanical arm 11 is installed on the sliding device. The battery trolley 2 is provided with an automatic retractable cable 22 for connecting to the charging port 31 of the electric vehicle 3. Figure 3 The figure shows the posture of the traction trolley 1 removing the automatic retractable cable 22. Figure 4 As shown, the traction trolley 1 puts the battery trolley 2 under the vehicle and then charges it directly. Figure 5 As shown, the battery trolley 2 can also be put under the vehicle and then separated from the traction trolley 1 for charging.

[0047] like Figure 8 The battery trolley body 21 is shown as the main frame of the entire trolley. The automatic retractable cable 22 is located on the left and right sides of the battery trolley 2, which is convenient for charging vehicles with charging ports 31 located at different positions on both sides of the vehicle body. The charging head 221 can be removed from the trolley by the mechanical arm 11 after charging is completed, and then the automatic retractable cable 22 is retracted into the battery trolley 2. The battery connector 23 connects to the traction connector 13 to transmit signals and be towed. The steering wheel 24 controls the battery trolley 2 by transmitting signals to provide power. Figure 2 As shown, the traction trolley 1 selects the corresponding side automatic retractable cable 22 according to the position of the charging port 31 of the electric vehicle 3 (in this embodiment, when the electric vehicle is at the left rear charging port), and delivers the battery trolley 2 from the front or rear end of the electric vehicle 3 to the bottom of the electric vehicle 3. The width of the battery trolley 2 is smaller than the width between the two front wheels and the two rear wheels of the electric vehicle 3, and the height of the battery trolley 2 is smaller than the height of the chassis of the electric vehicle 3.

[0048] like Figures 11 to 13The figure shows the overall view of the traction connection 13 and the battery connection 23, showing the state of the traction connection 13 and the battery connection 23 being matched. The traction connection 13 includes a traction seat and a traction signal port 137 fixed to the traction seat, and the battery connection 23 includes a traction hook 231 and a battery signal port 232 fixed to the traction hook 231. The traction signal port 137 and the battery signal port 232 are connected by signal. The traction seat and the traction hook 231 are matched to connect the traction trolley 1 and the battery trolley 2, and the traction signal port 137 and the battery signal port 232 are connected. Figure 6 The traction trolley 1 shown comprises a mechanical arm 11, a traction trolley body 12, a traction seat 13, and a vector steering wheel 14. The traction trolley body 12 serves as the main frame of the entire trolley. The mechanical arm 11 is used to grab the automatic telescopic cable 22, insert the automatic telescopic cable 22 into the electric vehicle 3 that needs to be charged for charging, and the traction seat 13 buckles the traction hook 231 for signal transmission and traction. The vector steering wheel 14 is a flat design that can effectively reduce the height of the vehicle body, so that the trolley can enter the bottom of the vehicle to work and provide movement power for the trolley.

[0049] like Fig. 9 The figure shows a schematic diagram of the three-dimensional structure of the traction connection 13. The traction seat includes a fixed cover plate 131, a fixed seat 133, a slewing bearing 134 and a signal seat 136. The outer ring of the slewing bearing 134 is fixed to the fixed seat 133, and the signal seat 136 is fixed to the inner ring of the slewing bearing 134. The fixed seat 133 is fixed as an integral device. The setting of the slewing bearing 134 can ensure that the steering of the traction trolley 1 is not affected while realizing the signal connection. The traction connection 13 has a door lock mechanism, which includes a lock tongue 139 and a posture return spring 132. The lock tongue 139 is hinged to the fixed seat 133, one end of the posture return spring 132 is fixed to the traction seat, and the other end of the posture return spring 132 is fixed to one end of the lock tongue 139. The posture return spring 132 ensures that the signal traction seat 36 can be docked in the correct direction each time it docks with the battery trolley 2. The traction signal port 137 is also provided with a signal port baffle, which can prevent foreign objects from entering the signal port when traction is not performed. The other end of the lock tongue 139 is an inclined surface. The lock tongue 139 cooperates with the lock hook to connect the traction connector 13 and the battery connector 23. A plurality of teeth are provided on one side of the lock tongue 139, and the fixed seat 133 is rotatably connected with a gear 135, and the teeth of the lock tongue 139 are meshed with the gear 135. When the traction connector 13 is docked with the battery connector 23, the top of the traction hook 231 abuts against the inclined surface of the lock tongue 139, and the lock tongue 139 rotates a certain angle along the hinge axis. The teeth on the lock tongue 139 are meshed with the gear 135, driving the gear 135 to rotate, and stretching the posture return spring 132, the traction hook 231 continues to extend forward, and the tip of the lock tongue 139 is inserted into the hole of the traction hook 231, and the posture return spring 132 drives the lock tongue 139 to return to the initial position.

[0050] The signal seat 136 is provided with a limit block 138. Corresponding to the limit block 138, the traction hook 231 is provided with a limit stopper 233. The limit stopper 233 and the limit block 138 cooperate to limit the depth of the traction hook 231 extending into the traction seat. Fig.12 As shown, the traction signal port 137 is provided with a guide hole, and the battery signal port 232 is provided with a guide column to match the guide hole. When the traction connector 13 and the battery connector 23 are matched, the guide column of the battery signal port 232 first contacts the guide hole of the traction signal port 137 to prevent the interface from being misaligned. The battery trolley 2 is provided with a steering wheel 24, and the traction trolley 1 is provided with a vector steering wheel 14.

[0051] like Fig.15 , Fig.16 The figure shows the general diagram of the automatic retractable cable 22, which includes a charging head 221, a cable 222 and a storage box 223. The automatic retractable cable 22 is installed inside the battery trolley, and the charging head 221 is fixed outside the battery trolley. After charging is completed, the charging head 221 can be removed from the trolley by a robotic arm, and the cable 222 can be retracted into the storage box 223.

[0052] like Figures 17 to 19 As shown, this is the clamping shape of the clamp end 111 of the robot arm 11 and the charging head 221. When the robot arm 11 removes the charging head 221, the middle guide column of the clamp end 111 first enters the middle positioning hole 224 of the charging head 221 to correct the posture. After reaching the depth, the charging head 221 is clamped by the clamps on both sides and the charging head 221 is pulled out and inserted into the charging port 31 of the electric vehicle 3 for charging.

[0053] The present invention adopts a separate structure, so that the originally integrated AGV charging cart is divided into two parts: a traction cart 1 and a battery cart 2. The traction cart 1 is responsible for taking the battery cart 2 to the location of the electric vehicle 3 that needs to be charged for charging, and then it can serve other battery carts 2. The battery cart 2 is only responsible for the loading of the battery, avoiding the idle waste of the traction part of the integrated AGV charging cart. In addition, the structure of the traditional charging cart is changed, and the battery cart 2 and the traction cart 1 are flattened, so that the battery cart 2 can enter the bottom of the electric vehicle 3 for charging, avoiding the problem of the traditional charging cart occupying a large space. The connection part adopts two methods: hard connection and soft connection. Bearings are used for steering. Signal connection can be performed without affecting steering. The charging cable 222 of the battery cart 2 adopts an automatic retraction device to avoid the loss caused by the cable 222 being exposed to the outside. The present invention changes the main structure of the traditional AGV charging cart, reduces the use cost, avoids waste of resources, and reduces the space occupied. At the same time, it combines the advantages of soft and hard connections, transmits signals while the traction hook 231 is connected, and uses an automatically retractable cable 22, which solves the problem of shortened life of the cable 222 due to long-term exposure to the outside.

[0054] When there are multiple cars that need to be charged in the garage, the traction trolley 1 goes to the charging position of the battery trolley 2 and buckles the battery connector 23 through the traction connector 13 to perform signal transmission and traction work, and then pulls the battery trolley 2 to the side of the electric car 3 that needs to be charged. After arriving at the position of the electric car 3, according to the position of the charging port 31, the traction trolley 1 sends the battery trolley 2 from the front or rear end to the bottom of the car, and takes out the automatic retractable cable 22 fixed on the side of the battery trolley 2 through the mechanical arm 11, and inserts the charging head 221 into the charging port 31 of the electric car 3 for charging. The traction connector 13 and the battery connector 23 are disconnected, and the battery trolley 2 remains at the bottom of the electric car 3 until the electric car 3 is fully charged. The traction trolley 1 moves to other battery trolley 2 positions and repeats the above steps to charge other electric cars 3. After charging is completed, the traction trolley 1 unplugs the charging head 221 and retracts the automatic retractable cable 22. The traction connector 13 is connected to the battery connector 23, driving the battery trolley 2 back to the fixed position, and the process ends.

[0055] In the several specific embodiments provided in the present disclosure, it is obvious to those skilled in the art that the present disclosure is not limited to the details of the above exemplary embodiments, and that the present disclosure can be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present disclosure is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present disclosure. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

[0056] The above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present disclosure.

Claims

1. Automatic charging car, It is characterized in that It includes a traction trolley and a battery trolley. The traction trolley is provided with a traction connector. Corresponding to the traction connector, the battery trolley is provided with a battery connector. The traction connector and the battery connector cooperate to connect the traction trolley and the battery trolley. The traction trolley is provided with a mechanical arm. The battery trolley is provided with an automatic retractable cable for connecting to the charging port of the electric vehicle. The width of the battery trolley is less than the width between the two front wheels and the two rear wheels of the electric vehicle. The height of the battery trolley is less than the height of the chassis of the electric vehicle. The traction connection part includes a traction seat and a traction signal port fixed to the traction seat, the battery connection part includes a traction hook and a battery signal port fixed to the traction hook, the traction signal port is connected to the battery signal port, the traction seat and the traction hook cooperate to connect the traction trolley and the battery trolley, and the traction signal port is connected to the battery signal port, The traction seat comprises a fixed seat, a slewing bearing and a signal seat. The outer ring of the slewing bearing is fixedly connected to the fixed seat, and the signal seat is fixedly connected to the inner ring of the slewing bearing.

2. The automatic charging vehicle according to claim 1, It is characterized in that The traction connector has a door lock mechanism, which includes a lock tongue and a posture return spring. The lock tongue is hinged to a fixed seat, one end of the posture return spring is fixed to the traction seat, and the other end of the posture return spring is fixed to one end of the lock tongue. The other end of the lock tongue is an inclined surface. The lock tongue cooperates with the lock hook to connect the traction connector and the battery connector.

3. According to claim 2, the automatic charging vehicle, It is characterized in that A plurality of teeth are arranged on one side of the lock tongue, and a gear is rotatably connected to the fixed seat, and the teeth of the lock tongue are meshed with the gear.

4. The automatic charging vehicle according to claim 3, It is characterized in that The signal seat is provided with a limit block, and corresponding to the limit block, the traction hook is provided with a limit baffle, and the limit baffle and the limit block cooperate to limit the position where the traction hook extends into the traction seat.

5. The automatic charging vehicle according to claim 1, It is characterized in that There is an automatic retractable cable on each side of the battery trolley.

6. The automatic charging vehicle according to claim 1, It is characterized in that The battery trolley is provided with a steering wheel, and the traction trolley is provided with a vector steering wheel.

7. The automatic charging vehicle according to claim 1, It is characterized in that A sliding device is arranged along the length direction of the traction trolley on the side of the traction trolley, and the mechanical arm is installed on the sliding device.

8. The automatic charging vehicle according to claim 1, It is characterized in that The robotic arm is a six-axis robotic arm.

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