Energy storage tram charging system and control method thereof

Abstract

This application discloses an energy storage tram charging system, comprising: a tram vehicle, a charging device, and a control device; a power receiving device is installed on the top of the tram vehicle, and the charging device is dynamically movable in the vertical direction; the control device is used to control the charging device to move vertically downward to contact the power receiving device for charging; the charging device also includes an elastic component to allow the charging device to return to its initial state after charging with the power receiving device is completed. This system consists of a simple vertically movable charging structure, and by simplifying the equipment interface on the vehicle, it is easy to operate, saves construction costs, and the saved vehicle space can accommodate more onboard energy storage devices, improving the vehicle's range and traction power. Furthermore, this application also provides an automatic fast charging control method, which can reduce the operating and maintenance costs of the vehicle by controlling the energy storage tram charging system.

Description

Technical Field

[0001] This invention belongs to the field of energy storage rail transit technology, and particularly relates to an energy storage tram charging system and its control method. Background Technology

[0002] With the development and expansion of urban construction, more and more cities are starting to operate or plan trams to facilitate people's travel. Among these, energy storage trams, which use on-board energy storage devices for power supply, can achieve contactless operation, have a braking energy recovery rate of over 80%, are green and energy-saving, and have low construction costs, making them the mainstream.

[0003] However, due to limitations such as roof space and axle load, existing energy storage trams can only be equipped with a limited number of energy storage devices. This makes the trams less adaptable to lines with long slopes, long station intervals, or even charging at the first and last stations, thus limiting the application scenarios of energy storage trams and hindering the promotion of the technology. This has become an urgent problem for industry professionals to solve.

[0004] Currently, the industry mainly uses two methods: developing new energy storage power sources or equipping trams with devices similar to existing pantographs. However, the development process requires a long time and often leads to increased costs. Traditional pantographs, on the other hand, occupy unnecessary space on the roof and are difficult to charge efficiently.

[0005] Therefore, it is necessary to provide a simple and easy-to-operate tram charging system. The system consists of a simple structure, which can simplify the equipment interface on the vehicle side, save vehicle space to arrange more on-board energy storage devices, improve the vehicle's range and traction power, and play a role in simple operation and cost saving. This is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the charging difficulties of energy storage trams in the prior art, this invention aims to provide a simple and easy-to-operate tram charging system and its control method. The system consists of a simple structure, which simplifies the equipment interface on the vehicle side, makes operation simple, saves costs, and allows for the placement of more on-board energy storage devices in the saved space, thereby improving the vehicle's range and traction power.

[0007] The present invention provides an energy storage-type tram charging system, the specific technical solution of which is as follows: tram vehicle, charging device, and control device;

[0008] The tram vehicle is equipped with a power receiving device on its roof, and the charging device can be dynamically operated in the vertical direction.

[0009] The control device is used to control the charging device to move vertically downwards to make contact with the receiving device for charging;

[0010] The charging device is also equipped with an elastic component to allow the charging device and the receiving device to return to their initial state after charging is completed.

[0011] Preferably, the charging device includes: a mounting assembly, a charging plate, and a coupler;

[0012] The power receiving device is a plate-shaped structure that protrudes from the top of the tram vehicle;

[0013] The mounting components are X-shaped and intersecting each other, with charging plates at both ends of their bottom. The charging plates contact the outer surface of the power receiving device for charging. When the mounting components are intersecting each other, the connection between the upper and lower parts can rotate.

[0014] The mounting assembly is provided with couplers at both ends of its upper part. The opening and closing of the couplers are used to control the up and down movement of the mounting assembly and the contact status between the charging plate and the power receiving device.

[0015] Preferably, the elastic component is disposed on the upper part of the charging device, and the couplers are connected to both ends of the elastic component;

[0016] Once charging is complete, the coupler, in its closed state, is subjected to the action of the elastic component, causing the mounting components to return to their X-shaped, intersecting state.

[0017] Preferably, the coupler is an electromagnetic coupler, which is electrically connected to the control device. By controlling the energization state of the coupler, the couplers attract each other, so that the charging plate maintains a constant pressure contact with the receiving device.

[0018] Preferably, the length of the charging plate is greater than the length of the receiving device, so that the receiving device can obtain a larger contact space with the charging plate.

[0019] Preferably, the charging device includes: a main body, a power transmission unit, a connecting rod, and a charging plate;

[0020] The power receiving device has a planar structure and is installed on the top of the tram vehicle;

[0021] The main body is equipped with the power transmission unit, which is used to drive the connecting rod to move in the vertical direction;

[0022] The charging plate is located at the bottom of the connecting rod and is charged by connecting it to the power receiving device.

[0023] Preferably, the power transmission unit specifically includes: a motor, a gearbox, and an elastic component;

[0024] The motor converts electrical energy into mechanical energy, and under the transmission of the gearbox, drives the connecting rod to move up and down in the vertical direction, so that the charging plate comes into contact with the power receiving device;

[0025] The elastic component is provided between the gearbox and the connecting rod.

[0026] Preferably, the main body is also provided with a guide unit to guide the connecting rod, ensuring the movement trajectory of the connecting rod in the vertical direction.

[0027] Preferably, the power receiving device is circular, and the surface area of ​​the power receiving device is larger than the surface area of ​​the contact surface of the charging plate.

[0028] Meanwhile, the present invention also provides a control method for an energy storage tram charging system incorporating the above-mentioned energy storage tram charging system, the specific steps of which are as follows:

[0029] (1) After the control device detects that the tram has entered the charging station, it sends a control signal to the charging device;

[0030] (2) After receiving the control signal, the charging device descends vertically and makes contact with the power receiving device installed on the top of the tram vehicle to start charging.

[0031] (3) After charging is completed, the tram vehicle sends a signal to the control device, and the charging device moves upward with the assistance of the elastic component to restore the initial state.

[0032] Compared with the existing technology, the beneficial effects of this technical solution are: it provides a simple and easy-to-operate energy storage tram charging system. The system consists of a simple up-and-down movable charging structure. By simplifying the equipment interface at the vehicle end, the operation is simple, construction costs are saved, and the saved vehicle space can be used to arrange more on-board energy storage devices, thereby improving the vehicle's range and traction power.

[0033] Another objective of this invention is to provide an automatic fast charging control method that can reduce the operating and maintenance costs of a tram by controlling an energy storage tram charging system. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an energy storage tram charging system in a specific embodiment;

[0036] Figure 2 for Figure 1 A schematic diagram of the charging state structure of a medium-energy storage tram charging system;

[0037] Figure 3 This is a schematic diagram of the energy storage tram charging system in another specific embodiment;

[0038] Figure 4 for Figure 3 A schematic diagram of the charging state structure of a medium-energy storage tram charging system.

[0039] The specific attached figures are labeled as follows:

[0040] 10-Tram vehicles;

[0041] Figure 1 and Figure 2 Reference numerals in the first embodiment: 100 - tram charging system; 110 - power receiving device; 112 - power receiving board; 120 - charging device; 122 - mounting assembly; 124 - charging board; 126 - electromagnetic coupler; 128 - elastic component; 130 - control device;

[0042] Figure 2 and Figure 3 Reference numerals in the second embodiment: 200 - tram charging system; 210 - power receiving device; 214 - power receiving board; 220 - charging device; 230 - control device; 212 - insulator; 222 - main body; 222a - guide unit; 224 - power transmission unit; 224a - motor; 224b - gearbox; 226 - connecting rod; 228 - charging board; 229 - shock absorber assembly. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0045] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0047] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0048] Please refer to the following: Figures 1 to 2 The first specific embodiment of the present invention provides an energy storage tram charging system 100, the structure of which includes: tram vehicle 10, charging device 120, and control device 130.

[0049] The tram vehicle 10 is equipped with a power receiving device 110 on its top, and the charging device 120 can be dynamically operated in the vertical direction.

[0050] The control device 130 is used to control the charging device 120 to move vertically downward and make contact with the power receiving device 110 for charging;

[0051] The charging device 120 is also provided with an elastic component 128, which is used to allow the charging device 120 and the power receiving device 110 to return to their initial state after charging is completed.

[0052] Preferably, in this technical solution, the main differences in the various embodiments lie in the arrangement and structural type of the charging device 120, and the corresponding power receiving device 110 that is in contact with it. Specifically, in this embodiment, such as... Figure 1 The specific structures of the charging device 120 and the power receiving device 110 shown are as follows:

[0053] The power receiving device 110 has a plate-like structure, specifically as follows: Figure 1 and Figure 2 The power receiving plate 112 shown is protruding from the top of the tram vehicle 10. The power receiving plate 112 can be fixed to maintain its protruding state, or it can be extended and retracted from the top of the tram vehicle 10 in a lifting manner, so that it only extends when it receives a charging signal from the control device 130. This embodiment does not limit the specific form. At the same time, since the power receiving plate 112 has a certain height, it overcomes the height error of the tram vehicle 10 caused by load or wheel wear, so as to maintain a more stable charging effect after contacting the charging device 120 described later.

[0054] In this embodiment, the charging device 120 includes: a mounting assembly 122, a charging plate 124, and a coupler 126;

[0055] Specifically, such as Figure 1 and Figure 2 As shown in the figure, the mounting component 122 in this embodiment is specifically an X-shaped intersecting structure, and the charging plate 124 is provided at both ends of its bottom. The charging plate 124 is charged by contacting the power receiving device 110, specifically the outer surface of the power receiving plate 112. At the same time, in this embodiment, the upper and lower parts of the mounting component 122 are rotatably connected when they are intersecting, so as to realize the rotational connection in all directions. Under the curvature condition, the tram vehicle 10 can also be charged.

[0056] The upper ends of the mounting assembly 122 are provided with couplers 126. The main function of the couplers 126 is to control the vertical movement of the mounting assembly 122 by controlling its opening and closing. Specifically, when the couplers 126 on both sides are closed, the mounting assembly 122 changes from an X-shaped intersecting state to a straight state and moves downward in the vertical direction. At this time, the charging plate 124 and the power receiving device 110, specifically the power receiving plate 112, come into contact.

[0057] The opening and closing states of the coupler 126 are used to control whether the charging state of the power receiving board 112 is started or not.

[0058] More preferably, the internal structure of the charging device 120 in this embodiment is further defined. In this embodiment, such as... Figure 1 and Figure 2 As shown, the elastic component 128 is disposed on the upper part of the charging device 110, specifically between the couplers 126, and the couplers 126 are respectively connected to both ends of the elastic component 128.

[0059] Once charging is complete, the elastic force of the elastic component 128 enables the mounting component 122 to return from a straight line state to an X-shaped intersecting state.

[0060] Furthermore, the specific form of the coupler 126 in this embodiment is further defined. In this embodiment, the coupler 126 is selected as an electromagnetic coupler 126. After the electromagnetic coupler 126 is electrically connected to the control device 130, electromagnetic force is generated by controlling whether the electromagnetic coupler 126 is energized. When the electromagnetic coupler 126 is energized, they attract each other. At the same time, since the mounting assembly 122 has an X-shaped intersecting structure, the charging plate 124 can also maintain a constant pressure to clamp and contact the receiving plate 112.

[0061] Furthermore, the specific structure of the charging plate 124 in this embodiment is further defined. In this embodiment, the length of the charging plate 124 is greater than the length of the power receiving device 110, that is, the power receiving plate 112. With this design, even if the tram vehicle 10 is not stopped at the correct position during charging, the power receiving plate 112 of the power receiving device 110 and the charging plate 124 of the charging device 120 can still make contact, thereby achieving the charging effect and avoiding the need for accurate position control during charging.

[0062] Simultaneously, the present invention also provides a control method for an energy storage tram charging system incorporating the above-mentioned energy storage tram charging system. In this embodiment, combined with... Figure 1 and Figure 2 The specific steps are as follows:

[0063] (1) After the control device 130 detects that the tram vehicle 10 has entered the charging station, it sends a control signal to the charging device 120.

[0064] (2) After receiving the control signal, the charging device 120 is energized and the electromagnetic coupler 126 is powered on, generating an attractive force that causes the mounting component 122 to change from an X-shaped cross state to a straight state and to be lowered in the vertical direction, so that the charging plate 124 contacts the power receiving device 110, specifically the power receiving plate 112, which is installed on the top of the tram vehicle 10, and charging begins.

[0065] (3) After charging is completed, the tram vehicle 10 sends a signal to the control device 130, the electromagnetic coupler 126 in the charging device 120 is de-energized, and the mounting assembly 122, which has lost its attractive force, moves upward with the assistance of the elastic component 128 to restore the initial X-shaped cross state.

[0066] Please refer to the following: Figures 3 to 4 The second specific embodiment of the present invention provides an energy storage tram charging system 200, whose structure mainly includes: the tram vehicle 10, the charging device 220, and the control device 230.

[0067] In this embodiment, a power receiving device 220 is installed on the top of the tram vehicle 10. Specifically, the power receiving device is a flat plate structure, such as... Figure 3 and Figure 4 As shown, the power receiving plate 224 is planarly disposed on the top of the tram vehicle 10, and an insulator 212 is also disposed between the power receiving plate 224 and the tram vehicle 10. The insulator 212 is used to shield the area around the power receiving plate 224 to prevent the tram vehicle 10 from discharging during the charging process.

[0068] In this embodiment, the charging device 220 specifically includes: a main body 222, a power transmission unit 224, a connecting rod 226, and a charging plate 228;

[0069] like Figure 3 and Figure 4 As shown, in this embodiment, the main body 222 is a box-type structure, and the power transmission unit 224 is provided inside it. The power transmission unit 224 is mechanically connected to the connecting rod 226 to drive the connecting rod 226 to move in the vertical direction.

[0070] The bottom of the connecting rod 226 is connected to the charging plate 228, which is charged by connecting to the power receiving device 220, specifically the power receiving plate 224.

[0071] Preferably, the specific structure of the power transmission unit 224 in this embodiment is further defined, and the power transmission unit 224 specifically includes: a motor 224a, a gearbox 224b, and an elastic component 229;

[0072] The connection relationship is as follows: the motor 224a converts electrical energy into mechanical energy by connecting to an external power source. Under the transmission action of the gearbox 224b, it drives the connecting rod 226 to move up and down in the vertical direction relative to the tram vehicle 10, so that the charging plate 228 can make contact with the power receiving device 210, specifically the power receiving plate 214, for charging.

[0073] Furthermore, an elastic component 229 is also provided between the gearbox 224b and the connecting rod 226. In this embodiment, the elastic component 229 is specifically a shock absorber component 229. During the downward movement of the connecting rod 226, the shock absorber component 229 is stretched.

[0074] By using the vertically movable link 226 structure, the charging plate 228 moves downward, thus overcoming the height error of the tram vehicle 10 caused by load or wheel wear. Furthermore, the shock absorber assembly 229 brings the charging plate 228 into contact with the receiving plate 214 with constant pressure, resulting in more stable charging and a faster recycling process after charging.

[0075] More preferably, the main body 222 structure in this embodiment is further structurally defined. In this embodiment, such as... Figure 3 and Figure 4 As shown, the main body 222 is also provided with a guide unit 222a for guiding the connecting rod 226. The guide unit 222a is sleeved on the outer surface of the connecting rod 226 to ensure that the movement trajectory of the connecting rod 226 in the vertical direction always remains vertical and avoids tilting. Specifically, in this embodiment, the guiding method is that there are threads on the inner circumferential surface of the guide unit 222a and the outer circumferential surface of the connecting rod 226, and the two are threadedly connected. Other connection methods can also be used in other embodiments.

[0076] Furthermore, the structure of the power receiving device 210, specifically the power receiving plate 214, in this embodiment is further defined. In this embodiment, the power receiving plate 214 is circular, and the surface area of ​​the power receiving plate 214 is larger than the surface area of ​​the contact surface of the charging plate 228. With this design, even if the parking position of the tram vehicle 10 deviates slightly, the power receiving plate 214 of the power receiving device 210 and the charging plate 228 of the charging device 220 can still make contact, achieving a stable charging effect.

[0077] Simultaneously, the present invention also provides a control method for an energy storage tram charging system incorporating the above-mentioned energy storage tram charging system. In this embodiment, combined with... Figure 3 and Figure 4 The specific steps are as follows:

[0078] (1) After the control device 230 detects that the tram vehicle 10 has entered the charging station, it sends a control signal to the charging device 220;

[0079] (2) After receiving the control signal, the motor 224a in the main body 222 starts to rotate. Under the transmission action of the gearbox 224b, the connecting rod 226 is lowered vertically under the guidance of the guide unit 222a, so that the charging plate 228 contacts the power receiving device 210, specifically the power receiving plate 214, which is provided on the top of the tram vehicle 10, and starts charging.

[0080] (3) After charging is completed, the tram vehicle 10 sends a signal to the control device 230. The charging device 220, specifically the connecting rod 226, moves upward to restore the initial state with the assistance of the reverse rotation of the motor 224a and the shock absorber assembly 229.

[0081] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy storage-type tram charging system, characterized in that, include: Tram vehicles, charging devices, and control devices; The tram vehicle is equipped with a power receiving device on its roof, and the charging device can be dynamically operated in the vertical direction. The control device is used to control the charging device to move vertically downwards to make contact with the receiving device for charging; The charging device is also provided with an elastic component to allow the charging device and the receiving device to return to their initial state after charging is completed. The charging device includes: a mounting assembly, a charging plate, and a coupler; The power receiving device is a plate-shaped structure that protrudes from the top of the tram vehicle; The mounting components are X-shaped and intersecting each other, with charging plates at both ends of their bottom. The charging plates contact the outer surface of the power receiving device for charging. When the mounting components are intersecting each other, the connection between the upper and lower parts can rotate. The mounting assembly is provided with couplers at both ends of its upper part. The opening and closing of the couplers are used to control the up and down movement of the mounting assembly and the contact status between the charging plate and the power receiving device. The elastic component is disposed on the upper part of the charging device, and the couplers are connected to both ends of the elastic component; Once charging is complete, the coupler, in its closed state, is subjected to the action of the elastic component, causing the mounting components to return to their X-shaped, intersecting state.

2. The energy storage-type tram charging system according to claim 1, characterized in that, The coupler is an electromagnetic coupler, which is electrically connected to the control device. By controlling the energization state of the coupler, the couplers attract each other, so that the charging plate maintains a constant pressure contact with the receiving device.

3. The energy storage-type tram charging system according to claim 2, characterized in that, The length of the charging plate is greater than the length of the receiving device, so that the receiving device can obtain a larger contact space with the charging plate.

4. A control method for an energy storage tram charging system, used to control the energy storage tram charging system as described in any one of claims 1 to 3, characterized in that, The specific steps are as follows: (1) After the control device detects that the tram has entered the charging station, it sends a control signal to the charging device; (2) After receiving the control signal, the charging device descends vertically and makes contact with the power receiving device installed on the top of the tram vehicle to start charging. (3) After charging is completed, the tram vehicle sends a signal to the control device, and the charging device moves upward with the assistance of the elastic component to restore the initial state.

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