A hand-pushed charging cart

Abstract

The present application discloses a hand-pushed charging cart, comprising: a vehicle body, and a handle, a driving wheel, a steering wheel, and an auxiliary drive control system mounted on the vehicle body; a first battery and a second battery are mounted on the vehicle body; the first battery is used to store electrical energy for charging new energy vehicles, and the second battery is used to provide electrical energy for the auxiliary drive control system; the handle is connected to the steering wheel in a transmission manner; the auxiliary control system includes a controller and a limit switch, the limit switch is mounted on the vehicle body, and the handle can be rotated in a vertical direction relative to the base plate; the limit switch is electrically connected to the controller, and the controller is electrically connected to the driving wheel motor, and the controller is used to control the driving wheel motor to stop to control the driving wheel to stop, thereby controlling the braking of the charging cart through the braking signal. This charging cart adopts an auxiliary drive control system in conjunction with manpower, which is easy to operate and provides a good user experience.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle charging carts, and specifically to a hand-push charging cart. Background Art

[0002] Currently, new energy vehicles are mostly charged using charging carts. The mobility of these carts is ideal for meeting the flexible charging needs of new energy vehicles. These carts typically contain batteries that store energy from the power system at the charging station. This energy is then used to charge the new energy vehicle.

[0003] During the use of the above-mentioned charging cart, it is necessary to move the charging cart to the location of the new energy vehicle. In the prior art, this process is usually operated by a professional. The professional stands on the standing base provided on the body of the charging cart and drives the charging cart to the location of the new energy vehicle. Since this driving method of the charging cart increases the manufacturing cost of the charging cart, the prior art also provides a hand-pushed charging cart. This cart has a simple structure and can be pushed by manpower. However, since the charging cart contains batteries, it is often very heavy. Therefore, professionals still need to use a lot of force to push the charging cart to the location of the new energy vehicle. In addition, if there is a need to turn or brake, it is difficult to control it by manpower alone, and the safety factor is low.

[0004] According to the development of existing technologies and user needs, it is hoped that a one-stop self-service charging cart can be realized, that is, the user can borrow, operate, move and return the charging cart by himself, and the user does not need too much effort to easily move the charging cart.

[0005] Therefore, there is an urgent need for a charging cart to solve the above-mentioned problem that the weight is too large and the movement thereof cannot be easily controlled manually. Summary of the Invention

[0006] The present application provides a hand-pushed charging trolley to solve the problem in the prior art that the charging trolley is too heavy and difficult to move.

[0007] The hand-pushed charging cart provided in this application includes: a body, and a handle, a driving wheel, a steering wheel, and an auxiliary driving control system installed on the body;

[0008] A first battery and a second battery are mounted on the vehicle body; the first battery is used to receive energy from the power grid system and store electricity to charge the new energy vehicle, and the second battery is used to provide electricity for the auxiliary drive control system;

[0009] The handle is in transmission connection with the steering wheel and provides a grip portion for the user to hold. The handle can be used to control the direction of the steering wheel, thereby controlling the direction of travel of the charging cart;

[0010] The auxiliary control system includes a controller and a limit switch, wherein the limit switch is mounted on the vehicle body, the handle is rotatable in a vertical direction relative to the base plate, and the limit switch is configured to be triggered to send a braking signal when the handle is rotated to a preset position;

[0011] The limit switch is electrically connected to the controller, and the controller is electrically connected to the drive wheel motor. The controller is used to control the drive wheel motor to stop to control the drive wheel to stop through the braking signal, thereby controlling the braking of the charging cart.

[0012] Optionally, the vehicle body is further provided with a mounting component, and the limit switch includes a first limit switch and a second limit switch, and the first limit switch and the second limit switch are respectively mounted on two vertical ends of the mounting component;

[0013] The mounting component is rotatably connected to the handle rod via a rotating member, so that the handle and the handle rod can rotate in a vertical direction;

[0014] The grip rod is used to swing relative to the mounting component to a first position to contact the first limit switch, and to swing to a second position to contact the second limit switch.

[0015] Optionally, the first limit switch and the second limit switch are respectively arranged on the upper and lower sides of the rotating member, the first part of the handle rod is used to swing to the first position relative to the mounting member and contact the first limit switch, and the second part of the handle rod is used to swing to the second position relative to the mounting member and contact the second limit switch, the first part is the part of the handle rod located above the rotating member, and the second part is the part of the handle rod located below the rotating member.

[0016] Optionally, the mounting component is horizontally rotatably mounted on the vehicle body, the handlebar is transmission-connected to the steering wheel via the mounting component, and a horizontally rotatable rotating component is further provided on the vehicle body, one end of the mounting component is fixedly connected to the rotating component, and the other end is rotatably connected to the handlebar via the rotating member, and the rotating component is connected to the front fork;

[0017] The handle is used to rotate in the horizontal direction, driving the handle rod and the mounting component to rotate horizontally, thereby driving the rotating component to rotate horizontally, so that the front fork drives the steering wheel to rotate and adjust the direction of the steering wheel.

[0018] Optionally, when the angle between the handle bar and the vertical direction is smaller than a first preset angle, the first part touches the first limit switch and triggers the first limit switch to send a braking signal;

[0019] When the angle between the handle bar and the horizontal direction is smaller than a second preset angle, the second part touches the second limit switch and triggers the second limit switch to send a braking signal.

[0020] Optionally, the second part is provided with an inclined surface along the top-down direction, which is inclined from the side close to the limit switch to the side away from the limit switch, so that when the angle between the handle rod and the horizontal direction is at the second preset angle, the second part touches the second limit switch.

[0021] Optionally, a control button is provided on the handle, and the control button is electrically connected to the controller. The control button is used to send control instructions to the controller to control the rotation direction of the driving wheel, and the control instructions include forward and backward.

[0022] Optionally, the handle is provided with a throttle handle for a user to rotate and operate, the throttle handle is electrically connected to the controller, and the controller controls the power of the drive wheel motor according to the degree of rotation of the throttle handle to adjust the speed of the drive wheel;

[0023] The controller is used to jointly control the travel state of the drive wheel according to the brake signal and the rotation degree of the throttle handle to control the travel state of the push-type charging vehicle. When the controller receives the brake signal to control the drive wheel motor to lock, the controller blocks the control of the throttle handle on the drive wheel speed.

[0024] Optionally, the hand-pushed charging cart is further provided with a diagnostic interface, which is used to provide the fault code, real-time data and sensor status of the charging cart to an external detection device, so as to locate the problem when the charging cart fails.

[0025] Compared with the prior art, this application has the following advantages:

[0026] The hand-pushed charging cart provided in the present application includes: a body, and a handle, a driving wheel, a steering wheel, and an auxiliary drive control system installed on the body; a first battery and a second battery are mounted on the body; the first battery is used to receive energy from the power grid system and store electrical energy to charge the new energy vehicle, and the second battery is used to provide electrical energy for the auxiliary drive control system; the handle is transmission-connected to the steering wheel and provides a grip for the user to hold, and the direction of the steering wheel can be controlled by the handle, thereby controlling the direction of travel of the charging cart; the auxiliary control system includes a controller and a limit switch, the limit switch is installed on the bottom plate of the body, the handle can be rotatable in the vertical direction relative to the bottom plate, and the limit switch is used to be triggered when the handle is rotated to a preset position and send a braking signal; the limit switch is electrically connected to the controller, and the controller is electrically connected to the driving wheel motor, and the controller is used to control the driving wheel motor to stop through the braking signal to adjust the stop of the driving wheel, thereby controlling the braking of the charging cart.

[0027] The hand-pushed charging cart provided in this application uses a first battery to store electricity for charging new energy vehicles, while a second battery provides electricity to the auxiliary drive control system. This allows the user to assist in controlling the charging cart using the electricity provided by the second battery and the auxiliary drive control system. The handle is in transmission connection with the steering wheel, allowing the user to control the direction of the steering wheel and, in turn, the cart by turning the handle. When the handle is rotated to a preset position, it touches a limit switch, triggering the limit switch to send a brake signal. The controller in the auxiliary control system receives the brake signal from the limit switch, thereby stopping the drive wheel motor and braking the cart. Therefore, the user only needs to raise or lower the handle while rotating it left or right to control the start, stop, and driving direction of the charging cart. Furthermore, if the user raises or lowers the handle to a preset position, the limit switch automatically sends a brake signal to brake the cart. During braking, the drive wheel motor locks, preventing the user from pushing or pulling the cart. The above-mentioned charging cart ultimately eliminates the existing problem of excessive mass restricting the movement of charging carts. Furthermore, the combination of a handle and a limit switch ensures the safety of the charging cart and the user during movement, preventing the user from being too close or too far away from the cart, which could easily cause the cart to hit the user or slip out of the user's hands and cause loss of control. The hand-pushed charging cart provided in this application coordinates the relationship between manpower and the auxiliary power system. With the inclusion of a safety brake mechanism, the movement of the charging cart can be easily controlled through simple human operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the hand-pushed charging cart provided in an embodiment of the present application.

[0029] Figure 2 This is a schematic diagram of the partial structure of the hand-pushed charging cart provided in an embodiment of the present application, mainly based on the auxiliary drive control system.

[0030] Reference numerals:

[0031] 101: vehicle body, 102: handle, 103: driving wheel, 104: steering wheel, 105: auxiliary drive control system, 106: first battery, 107: handle bar, 108: front fork;

[0032] a: vertical direction, b: horizontal direction;

[0033] 201: limit switch, 2011: first limit switch, 2012: second limit switch;

[0034] 202: Mounting component, 203: Rotating member, 204: Rotating component. DETAILED DESCRIPTION

[0035] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific implementations disclosed below.

[0036] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," "set," and the like should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0039] A typical usage scenario of the embodiments of the present application is a charging station with several charging piles and several charging carts. The charging carts can obtain electrical energy from the charging piles and store it in their own first batteries to complete their own energy replenishment. The charging carts can also transmit their own stored electrical energy to new energy vehicles to complete the charging of new energy vehicles. As a medium for storing and transmitting electrical energy, the charging cart needs to have good mobility so that it can be used to charge new energy vehicles anytime and anywhere. In fact, the batteries and other components of existing charging carts are relatively heavy, and relying on the user's manual power to push them requires a lot of effort. Therefore, the embodiments of the present application provide an auxiliary drive control system to assist the operation of the charging cart. At the same time, the auxiliary drive system has a corresponding second battery as a power supply structure to share the operating pressure of the first battery in the charging cart. The charging cart is provided with a handle for the user to control the handle and the buttons on it to issue control instructions to the auxiliary drive system to control the movement of the charging cart.

[0040] The hand-pushed charging cart of the present application can be implemented by the dispatching and management system of the charging pile, which receives and senses the status information of each charging cart through various sensors installed on the charging pile and the charging cart; the owner of the new energy vehicle can obtain the relevant information of the charging cart through a mobile phone or the vehicle-mounted system of the new energy vehicle, or through short-range wireless communication methods such as Bluetooth. Accordingly, the dispatching and management system can obtain the relevant information of the new energy vehicle and the owner, and issue the permission to use the charging cart to the legal user. After obtaining the permission to use the charging cart, the user can push or pull the charging cart to the location of the new energy vehicle to charge the new energy vehicle. After charging is completed, the user can move the charging cart to the location of the charging pile to recharge the charging cart.

[0041] In the embodiments of the present application, the hand-pushed charging cart is referred to as the charging cart hereinafter, unless otherwise specified or explained.

[0042] The present application provides a push-type charging cart. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the external structure of the hand-pushed charging cart provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the partial structure of the hand-pushed charging cart provided in an embodiment of the present application, mainly based on the auxiliary drive control system.

[0043] The push-type charging cart provided in the embodiment of the present application allows the user to independently control the push-type charging cart after obtaining the use permission to charge the new energy vehicle. Since the push-type charging cart provided in the embodiment of the present application is labor-saving and easy to operate, the user can independently push the push-type charging cart to the location of the new energy vehicle to be charged and charge the new energy vehicle to be charged.

[0044] The push-type charging cart provided in the embodiment of the present application includes: a body 101, and a handle 102, a driving wheel 103, a steering wheel 104, and an auxiliary driving control system 105 installed on the body;

[0045] The vehicle body is provided with a first battery 106 and a second battery; the first battery 106 is used to receive energy from the power grid system and store electricity to charge the new energy vehicle, and the second battery is used to provide electricity for the auxiliary drive control system;

[0046] The handle 102 is in transmission connection with the steering wheel 104 and provides a grip portion for the user to hold. The handle 102 can be used to control the direction of the steering wheel, thereby controlling the direction of travel of the charging cart.

[0047] The auxiliary control system 105 includes a controller and a limit switch 201. The limit switch 201 is mounted on the vehicle body. The handle is rotatable in the vertical direction relative to the base plate. The limit switch 201 is configured to be triggered to send a braking signal when the handle 102 is rotated to a preset position.

[0048] The limit switch 201 is electrically connected to the controller, and the controller is electrically connected to the drive wheel motor. The controller is used to control the drive wheel motor to stop to control the drive wheel 103 to stop through the braking signal, thereby controlling the braking of the charging cart.

[0049] A first battery 106 and a second battery are mounted on the vehicle body; the first battery 106 is used to receive energy from the power grid system and store electrical energy for charging the new energy vehicle, and the second battery is used to provide electrical energy for driving the driving wheels.

[0050] The vehicle body 101, serving as the main body of the charging cart, may include a base plate, frame, and outer shell, providing securement, protection, and support for the entire vehicle. The first and second batteries 106 are secured to the vehicle via brackets within the vehicle body. The first battery 106 is a high-voltage battery. Generally, a battery with an output voltage above 60V is considered high-voltage, and its internal voltage may reach hundreds of volts or even higher. Before the charging cart transmits power from the high-voltage battery to the new energy vehicle being charged, it must convert the high-voltage power to a low-voltage voltage compatible with the vehicle being charged. This converted power is then transmitted to the vehicle. A DC-DC (direct current-to-direct current) voltage converter can be used to achieve battery voltage conversion. While batteries often have a fixed capacity, we often prefer a higher capacity. Generally speaking, higher capacity also increases battery quality. Therefore, increasing the battery voltage can improve battery performance to some extent. Generally, when the voltage increases, a normal-voltage battery will take less time to deplete its charge than a high-voltage battery, given the same discharge time and capacity. This fully demonstrates that high-voltage batteries can extend the service life of batteries. At the same time, at the same capacity, high-voltage lithium-ion batteries are generally lighter and smaller in size than low-voltage lithium-ion batteries. Therefore, the use of high-voltage batteries again can make the charging cart as light as possible. Therefore, as the most important part of the charging cart, the first battery uses a high-voltage battery to provide a more stable and high-performance hardware foundation for the charging cart. The second battery is a low-voltage battery, and the voltage of the low-voltage battery can be 48V, so as to provide a suitable voltage for the auxiliary drive system. In general, a battery with an output voltage lower than 60V can be called a low-voltage battery. Furthermore, the second battery is connected to the controller and the drive wheel motor to provide them with electrical energy.

[0051] The handle 102 is in transmission connection with the steering wheel 104 and provides a grip portion for the user to hold. The handle 102 can be used to control the direction of the steering wheel, thereby controlling the direction of travel of the charging cart. The user can rotate the handle 102 through the grip portion, and the handle 102 drives the steering wheel 104 to rotate synchronously, thereby controlling the direction of travel of the charging cart. In actual application, in order to ensure safety, the rotation range of the handle and the steering wheel can be limited. For example, the rotation range of the steering wheel can be limited to within 90 degrees to the left and right of the center line of the handle to prevent the wheel from suddenly locking or turning too much and losing control.

[0052] The auxiliary control system 105 includes a controller and a limit switch 201. The limit switch 201 is mounted on the vehicle body. The handle is vertically rotatable relative to the base plate. The limit switch is configured to be triggered to send a braking signal when the handle is rotated to a predetermined position. The controller can be mounted on the bottom of the vehicle, and the limit switch is vertically fixed.

[0053] The limit switch 201 is electrically connected to the controller, which is in turn electrically connected to the drive wheel motor. The controller is configured to control the drive wheel motor to stop, thereby stopping the drive wheel 103 and thereby braking the charging cart, using the brake signal. The limit switch 201 includes mechanical contacts. When the handle is rotated in the vertical direction a to a preset position, the mechanical contacts in the limit switch 201 are triggered, at which point the limit switch 201 sends a brake signal to the controller, which in turn brakes the drive wheel.

[0054] The limit switch 201 is a switch used to detect the position of mechanical components and is commonly used in automated control systems. Its function is to determine whether a mechanical component has reached a preset position, thereby controlling the system's operation or issuing an alarm. There are three common types of limit switches: mechanical limit switches: These use mechanical contacts to detect position, typically with a moving part. When the mechanical part touches the switch, the contacts change state; photoelectric limit switches: These use photoelectric sensors to detect the position of an object without contacting moving parts, making them suitable for high-frequency or clean environments; and magnetic limit switches: These use magnetic field induction to detect position and are often used in environments requiring contact to avoid wear. In practical applications, limit switches are used in elevators, automated production lines, and other applications. In this application, to coordinate the rotation of the handle and handle bar and trigger the brake signal by contacting the limit switch, a simple, low-cost mechanical limit switch is used to achieve the aforementioned technical effects. When the limit switch 201 is triggered by the handle bar to a preset position, it sends a brake signal to control the braking of the charging cart.

[0055] In one embodiment, the handle 102 is connected to the front fork 108 on the steering wheel via a handle rod 107. When the handle 102 rotates in the horizontal direction b, the handle rod 107 rotates synchronously, driving the steering wheel 104 to change direction. The handle rod 107 is mounted on the vehicle body base in a horizontally rotatable manner.

[0056] The front fork 108 is connected to the rotating shaft of the steering wheel 104 and is used to support the steering wheel. The front fork is usually a "Y"-shaped structure, which is clamped on the rotating shafts on both sides of the wheel. When the front fork rotates, it will drive the wheel to rotate together, so that the direction of the wheel can be changed. The front fork can be made of a variety of materials and structures. Some front forks can also absorb the vibration of the wheel part to achieve shock absorption. A front fork with a simpler structure is a rigid front fork, which is usually made of steel or aluminum. The main advantage is that it is simple and light, and is suitable for urban roads or flat roads. If a front fork with a more complex structure and better performance is required, you can choose a spring suspension front fork, an air suspension front fork, an oil-gas suspension front fork, etc. These front fork systems are equipped with different shock absorption systems, which can effectively absorb impact and provide better comfort. They are more suitable for uneven roads or scenes that require a higher experience.

[0057] In one embodiment, a mounting component 202 is further provided on the vehicle body, and the limit switch 201 includes a first limit switch 2011 and a second limit switch 2012, and the first limit switch 2011 and the second limit switch 2012 are respectively installed at the vertical ends of the mounting component 202; the mounting component 202 is rotatably connected to the handle rod 107 through a rotating member 203, so that the handle and the handle rod can rotate in the vertical direction; the handle rod 107 is used to swing to a first position relative to the mounting component 202 and contact the first limit switch 2011, and swing to a second position and contact the second limit switch 2012.

[0058] The mounting component 202 is a connector that connects the handlebar to the steering wheel components. It is also rotatable horizontally relative to the vehicle's underbody. The mounting component 202 can be a cylindrical structure with a side opening and no bottom. The side openings are positioned to allow for the handlebar 107 to rotate vertically. The mounting component 202 is stationary vertically relative to the vehicle's underbody. When the handlebar 102 rotates horizontally, the mounting component 202 also rotates horizontally (i.e., in direction b). The mounting component 202 is rotatably connected to the handlebar 107 via a rotating member 203, enabling vertical rotation of the handlebar 102 and the handlebar 107. The rotating member 203 can be a pivotal connection member such as an expansion bolt. The handlebar 107 is rotatably connected to the mounting component 202 via a pivotal connection member such as a pivot. When the handle 102 is raised or lowered (in the direction a), the handle rod 107 is synchronously rotated up and down relative to the mounting component in the direction of its opening with the collision bolt as the axis.

[0059] The limit switch 201 can be mounted on the front panel of the mounting component 202, and the handle bar 107 can be mounted vertically and rotatably on the mounting component 202. The limit switch 201 and handle bar 107 are mounted in the aforementioned positions so that the handle bar can contact the limit switch when it rotates in a vertical plane. The handle bar is configured to swing relative to the mounting component to a first position, contacting the first limit switch 2011, and to swing to a second position, contacting the second limit switch 2012. When the handle bar 107 rotates vertically, it will contact the first limit switch 2011 or the second limit switch 2012 at a certain position. For example, if the handle bar's rotatable range is from vertical (at a 90-degree angle with the horizontal plane) to horizontal, then when the handle bar swings to the vertical position, the first limit switch 2011 is contacted, and when the handle bar swings to the horizontal position, the second limit switch 2012 is contacted. Here, the first position is the vertical position, and the second position is the horizontal position. The limit switch can be adjusted according to actual application conditions. It can be set so that once the handle bar touches the limit switch, it triggers the brake signal. It can also be set so that after the handle bar touches the limit switch and presses the limit switch to a preset position, it triggers the brake signal. In addition, the preset positions at which the first limit switch 2011 and the second limit switch 2012 are pressed and triggered can be set separately and do not have to be consistent.

[0060] In the foregoing description, the handle 102 can drive the handle rod 107 to control the left and right rotation of the mounting component 202 relative to the vehicle body. At the same time, the handle 102 can also drive the handle rod 107 to rotate vertically relative to the mounting component 202. Both left and right rotation and vertical rotation can be achieved by the handle driving the handle rod. To better understand this structure and its technical effects, an example is provided. The handle rod's initial position is vertical, and the handle and steering wheel's initial positions are directly in front of the vehicle. When the handle rod is pressed down to a 45-degree angle with the horizontal, the charging vehicle is accelerated by the ignition key during the downward movement, and the charging vehicle moves forward. To turn, simply rotate the handle rod left and right, which is at a 45-degree angle. Accordingly, if the handle rod's initial position is vertical, and the handle and steering wheel's initial positions are at an angle to the vehicle's front, to start the vehicle, the handle needs to be lowered, causing the handle rod to rotate from the vertical to a position at an angle to the vertical, thus starting the charging vehicle. Therefore, the up and down rotation and left and right rotation of the handle and the handle bar are independent of each other and are not restricted.

[0061] In one embodiment, the first limit switch 2011 and the second limit switch 2022 are respectively arranged on the upper and lower sides of the rotating member 203, and the first part of the grip rod 107 is used to swing to the first position relative to the mounting component 202 and contact the first limit switch 2011, and the second part of the grip rod 107 is used to swing to the second position relative to the mounting component 202 and contact the second limit switch 2012. The first part is the part of the grip rod 107 located above the rotating member 203, and the second part is the part of the grip rod 107 located below the rotating member 203.

[0062] The handle bar 107 is divided into two parts by the rotating member 203. Since the handle bar 107 rotates around the rotating member 203, the part above the rotating member 203 and the part below the rotating member 203 rotate in the same direction but change in height in the opposite direction. For example, when the handle bar 107 rotates downward from the vertical position ( Figure 1 When the handle bar 107 rotates clockwise (as seen in the figure), the first part presses down and the second part rises. The first part moves away from the front panel of the mounting component, while the second part moves toward the front panel. Correspondingly, when the handle bar 107 rotates counterclockwise upward from a horizontal position, the first part moves toward the front panel of the mounting component, while the second part moves away from the front panel. Furthermore, when the handle bar 107 rotates downward from a clockwise direction to a horizontal position, the second part contacts the second limit switch 2012, triggering the limit switch 2012 to send a brake signal. When the handle bar 107 rotates upward counterclockwise to a vertical position, the first part contacts the first limit switch 2011, triggering the limit switch 2012 to send a brake signal. Therefore, in a preferred embodiment, the first limit switch 2011 and the second limit switch 2012 are respectively disposed on the upper and lower sides of the rotating member to ensure that the handle bar sends a brake signal by contacting different limit switches when at the two extreme positions. The vertical and horizontal positions of the handlebar 107 listed above can be considered as limiting values; the operating range of the handlebar 107 cannot exceed these two positions. It should be noted that the vertical and horizontal positions are listed here for ease of understanding. In actual application, the handlebar's rotation range can be set to an angle between 80 and 10 degrees, or between 85 and 0 degrees, etc., relative to the horizontal plane, depending on the specific situation. Furthermore, the handlebar can also be rotated left and right to change the direction of the steering wheel. Since this section only explains how the handlebar controls the issuance of the brake signal, a detailed explanation of the direction change is not provided. This section should be understood in the context of the text.

[0063] In one embodiment, the mounting component 202 is horizontally rotatably mounted on the vehicle body, the handlebar is transmission-connected to the steering wheel 104 via the mounting component 202, and a horizontally rotatable rotating component 204 is further provided on the vehicle body. One end of the mounting component 202 is fixedly connected to the rotating component 204, and the other end is rotatably connected to the handlebar 107 via the rotating member 203. The rotating component 204 is connected to the front fork 108.

[0064] The handle 102 is used to rotate in the horizontal direction, driving the handle rod 107 and the mounting component 202 to rotate horizontally, thereby driving the rotating component 204 to rotate horizontally, so that the front fork 108 drives the steering wheel 104 to rotate and adjust the direction of the steering wheel 104.

[0065] In one embodiment, when the angle between the handle rod 107 and the vertical direction is less than a first preset angle, the first part touches the first limit switch 2011 and triggers the first limit switch to send a braking signal; when the angle between the handle rod 107 and the horizontal direction is less than a second preset angle, the second part touches the second limit switch 2012 and triggers the second limit switch to send a braking signal.

[0066] In actual use, the user will hold the handle, standing close to the handle, and push or pull the charging cart. The length of the handle and handle rod is fixed. Therefore, when the user rotates the handle up or down, the user's position relative to the front of the cart changes. For example, when the handle is rotated to the highest position, the user is closest to the front of the cart, while when the handle is rotated to the lowest position, the user is farthest from the front of the cart. Considering the weight of the charging cart and the user's strength, being too close or too far from the front of the cart may pose a safety hazard. For example, when the user is too close to the front of the cart, the user needs to push or pull the cart with greater force, while if the distance is too far from the front of the cart, the charging cart may lose control due to its own weight. Therefore, it is generally recommended that the first preset angle and the second preset angle do not exceed 0 degrees. They can also be set to 5 degrees, 10 degrees, 20 degrees, etc., as long as it meets the user's operating habits in actual application. When the first preset angle and the second preset angle are adjusted, the first limit switch and the second limit switch also need to be adjusted accordingly so that when the handle rod is rotated to the first preset angle and / or the second preset angle, the first limit switch and / or the second limit switch is triggered to send a braking signal.

[0067] In one embodiment, the second part is provided with an inclined surface along the top-down direction, which is inclined from the side close to the limit switch to the side away from the limit switch, so that when the angle between the handle rod and the horizontal direction is at the second preset angle, the second part touches the second limit switch.

[0068] In order to allow the handle bar 107 to rotate downward over a wider range while ensuring that the first and second parts can trigger their respective limit switches 201, the second part is configured as an inclined surface. If it were not configured as an inclined surface, that is, a columnar or rod-shaped structure similar to the first part, due to the limited space within the mounting component 202 for the handle bar to rotate, the angle supporting the handle bar's downward rotation (i.e., the second preset angle) would be very small, and the handle would not be able to reach the angle and position where the user can comfortably operate the handle and the charging cart. Therefore, the structure of the second part is optimized to make it more convenient for the user to operate.

[0069] In one embodiment, a control button is provided on the handle, and the control button is electrically connected to the controller. The control button is used to send control instructions to the controller to control the rotation direction of the drive wheel, and the control instructions include forward and backward. The charging cart in the embodiment of the present application can be pushed or pulled, mainly depending on the user's usage habits. If the cart's forward direction when pulled is forward, when the user needs to pull the charging cart, the forward command on the button can be used to control the rotation direction of the drive wheel to switch the charging cart's travel direction to forward. Correspondingly, if the user needs to push the charging cart, the backward command on the button can be used to change the rotation direction of the drive wheel to switch the charging cart's travel direction to backward. With this technical solution, there is no need to adjust the position of the front of the vehicle to achieve a U-turn like cars and bicycles, and only the rotation direction of the drive wheel needs to be changed. Therefore, this solution provides a good technical foundation for achieving U-turns for heavy charging carts.

[0070] In one embodiment, the handle 102 is provided with a power handle for the user to rotate and operate, and the power handle is electrically connected to the controller. The controller controls the power of the drive wheel motor according to the rotation degree of the power handle to adjust the speed of the drive wheel; the controller is used to jointly control the travel state of the drive wheel according to the brake signal and the rotation degree of the power handle to control the travel state of the hand-push charging vehicle. When the controller receives the brake signal to control the drive wheel motor to lock, the controller blocks the control of the drive wheel speed by the power handle.

[0071] The ignition handle can be located on the grip, where the hand is held, and rotated to accelerate the vehicle. Alternatively, it can be located next to the grip and rotated to control the power of the drive wheel motor, thereby accelerating the vehicle. Specifically, rotating or pushing the ignition handle increases the power of the drive wheel motor, accelerating the vehicle. When the ignition handle is released or returned to its original position, the power of the drive wheel motor decreases, decelerating the vehicle.

[0072] In one embodiment, the hand-pushed charging cart is further provided with a diagnostic interface, which is used to provide the fault code, real-time data and sensor status of the charging cart to an external detection device so as to locate the problem when the charging cart fails.

[0073] A charging cart typically includes a charge controller, which monitors the cart's status in real time and stops the cart when an abnormality occurs. The cart's status includes information about cart faults, battery status, and battery charge level. Battery status information includes information about battery charging, charging, and faults. The charge controller, connected to the first battery within the vehicle, can monitor the battery's status, including whether it has a fault, is overheated, and has a charge level. It can also monitor information about whether the battery is being recharged, charging, or in transit. In short, the charge controller can access the cart's internal information and, when an abnormality occurs, stop the cart. For example, if the cart is charging a new energy vehicle and detects that the first battery is overheated, it will disconnect the charging circuit and terminate the charging process. An alarm system, electrically connected to the charge controller, can be provided to alert users and maintenance personnel to take appropriate action when an abnormality occurs. The charge level of the first battery determines the amount of charge the cart can provide to new energy vehicles. The charging controller can also be connected to an ammeter to record the electric energy consumed by the charging cart to charge new energy vehicles. After the charging cart is put into use, it is often necessary to regularly inspect the charging cart. Some faults may occur during the inspection process or during use. These faults indicate that the charging cart is faulty and needs repair. In one embodiment, the charging cart is also provided with a diagnostic interface, which obtains the monitoring data of the charging controller and is used to provide the fault code, real-time data and sensor status of the charging cart to an external detection device so as to locate the problem when the charging cart fails. When the charging cart fails, the fault diagnostic interface can be used in combination with the log data of the management system to quickly locate and solve the problem of the charging cart. The fault diagnostic interface is also used to update and modify the configuration of the software of the charging cart control system through diagnostic tools to improve functions or adapt to new charging standards, etc.

[0074] The hand-pushed charging cart provided in this application uses a first battery to store electricity for charging new energy vehicles, while a second battery provides electricity to the auxiliary drive control system. This allows the user to assist in controlling the charging cart using the electricity provided by the second battery and the auxiliary drive control system. The handle is in transmission connection with the steering wheel, allowing the user to control the direction of the steering wheel and, in turn, the cart by turning the handle. When the handle is rotated to a preset position, it touches a limit switch, triggering the limit switch to send a brake signal. The controller in the auxiliary control system receives the brake signal from the limit switch, thereby stopping the drive wheel motor and braking the cart. Therefore, the user only needs to raise or lower the handle while rotating it left or right to control the start, stop, and driving direction of the charging cart. Furthermore, if the user raises or lowers the handle to a preset position, the limit switch automatically sends a brake signal to brake the cart. During braking, the drive wheel motor locks, preventing the user from pushing or pulling the cart.

[0075] The hand-push charging cart provided in the present application is moved by manpower. The hand-push charging cart adopts an auxiliary drive control system to provide auxiliary power for the charging cart, so that the charging cart can be easily moved and controlled by manpower to move it to the target position. Specifically, the auxiliary drive control system is combined with the manually controlled handle and button, so that the user only needs to simply operate the handle and button to obtain the power of the auxiliary drive control system. Ultimately, the excessive mass of the charging cart is no longer a problem that limits the movement of the charging cart. The hand-push charging cart provided in the present application achieves the technical effect of controlling the movement of the charging cart through simple manpower operation, and thus can provide an effective technical basis for the placement of charging carts for autonomous use in public places.

[0076] Given the current technological context in which new energy vehicles are often charged using charging carts, the push-type charging cart provided in the embodiments of this application can effectively meet the flexible charging needs of new energy vehicles. Without the need for professional operation, new energy vehicle owners can easily and independently push the charging cart to the location of their new energy vehicle. This reduces the operational requirements for the charging cart, saves labor costs, and increases the user's autonomy and ease of use. The push-type charging cart provided in this application can also be used to charge different new energy vehicles. For example, after a user borrows a charging cart, they can push it to the location of a first new energy vehicle to charge the first new energy vehicle. After charging the first new energy vehicle, the user does not need to return the charging cart, but can continue to push the charging cart to the location of a second new energy vehicle to continue charging the second new energy vehicle. During this process, the status information of the charging cart, including the remaining power, is displayed, along with relevant information such as the charging time and cost. Therefore, the push-type charging cart provided in the embodiments of this application makes the charging cart field as convenient and widespread as power bank rental and shared bicycle rental, and has certain market value.

[0077] Although the present application is disclosed as above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0078] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0079] Memory may include non-permanent storage in a computer-readable medium, in the form of random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0080] 1. Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented using any method or technology to store information. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change RAM (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include non-transitory computer-readable media, such as modulated data signals and carrier waves.

[0081] 2. Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

Claims

1. A hand-pushed charging trolley, characterized in that: include: Vehicle body, and handles, handle bars, drive wheels, steering wheels, and auxiliary drive control systems installed on the vehicle body; A first battery and a second battery are mounted on the vehicle body; the first battery is used to receive energy from the power grid system and store electricity to charge the new energy vehicle, and the second battery is used to provide electricity for the auxiliary drive control system; The handle is in transmission connection with the steering wheel and provides a grip portion for the user to hold. The handle can be used to control the direction of the steering wheel, thereby controlling the direction of travel of the charging cart; The auxiliary drive control system includes a controller and a limit switch, wherein the limit switch is mounted on the vehicle body, and the handle is rotatable in the vertical direction relative to the bottom plate of the vehicle body. The limit switch is configured to be triggered to send a braking signal when the handle is rotated to a preset position; the limit switch includes a first limit switch and a second limit switch, and when the angle between the handle bar and the vertical direction is less than a first preset angle, the first limit switch is touched, triggering the first limit switch to send a braking signal; and when the angle between the handle bar and the horizontal direction is less than a second preset angle, the second limit switch is touched, triggering the second limit switch to send a braking signal. The limit switch is electrically connected to the controller, and the controller is electrically connected to the drive wheel motor. The controller is used to control the drive wheel motor to stop to control the drive wheel to stop through the braking signal, thereby controlling the braking of the charging cart.

2. The hand-pushed charging cart according to claim 1, characterized in that: The handle is connected to the front fork on the steering wheel through a handle rod. When the handle rotates in the horizontal direction, the handle rod rotates synchronously, and the handle rod drives the steering wheel to change direction.

3. The hand-pushed charging cart according to claim 2, characterized in that: The vehicle body is further provided with a mounting component, and the first limit switch and the second limit switch are respectively mounted on the vertical ends of the mounting component; The mounting component is rotatably connected to the handle rod via a rotating member, so that the handle and the handle rod can rotate in a vertical direction; The grip rod is used to swing relative to the mounting component to a first position to contact the first limit switch, and to swing to a second position to contact the second limit switch.

4. The hand-pushed charging cart according to claim 3, characterized in that: The first limit switch and the second limit switch are respectively arranged on the upper and lower sides of the rotating part, the first part of the grip rod is used to swing to the first position relative to the mounting part and contact the first limit switch, and the second part of the grip rod is used to swing to the second position relative to the mounting part and contact the second limit switch. The first part is the part of the grip rod located above the rotating part, and the second part is the part of the grip rod located below the rotating part.

5. The hand-pushed charging cart according to claim 3, characterized in that: The mounting component is mounted on the vehicle body in a horizontally rotatable manner, the handlebar is in transmission connection with the steering wheel via the mounting component, and a rotating component is further provided on the vehicle body in a horizontally rotatable manner, one end of the mounting component is fixedly connected to the rotating component, and the other end is rotatably connected to the handlebar via the rotating member, and the rotating component is connected to the front fork; The handle is used to rotate in the horizontal direction, driving the handle rod and the mounting component to rotate horizontally, thereby driving the rotating component to rotate horizontally, so that the front fork drives the steering wheel to rotate and adjust the direction of the steering wheel.

6. The hand-pushed charging cart according to claim 4, characterized in that: Along the top-down direction, the second part is provided with an inclined surface which is inclined from the side close to the limit switch to the side away from the limit switch, so that when the angle between the handle rod and the horizontal direction is at the second preset angle, the second part touches the second limit switch.

7. The hand-pushed charging cart according to claim 1, characterized in that: A control button is provided on the handle, and the control button is electrically connected to the controller. The control button is used to send a control instruction to the controller to control the rotation direction of the driving wheel, and the control instruction includes forward and backward.

8. The hand-pushed charging cart according to claim 1, characterized in that: The handle is provided with a throttle handle for the user to rotate and operate, and the throttle handle is electrically connected to the controller. The controller controls the power of the drive wheel motor according to the degree of rotation of the throttle handle to adjust the speed of the drive wheel; The controller is used to jointly control the travel state of the drive wheel according to the brake signal and the rotation degree of the throttle handle to control the travel state of the hand-push charging cart. When the controller receives the brake signal to control the drive wheel motor to lock, the controller blocks the control of the throttle handle on the drive wheel speed.

9. The hand-pushed charging cart according to claim 8, characterized in that: The hand-pushed charging cart is also provided with a diagnostic interface, which is used to provide the fault code, real-time data and sensor status of the charging cart to an external detection device so as to locate the problem when the charging cart fails.

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