Vehicle charging system
By interconnecting multiple charging devices in the vehicle charging system and using relays and transformers to switch signal paths under different conditions, the problems of low line utilization and difficulty in transmitting signals during power outages in traditional systems are solved, achieving more efficient network signal transmission and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LITE ON TECH CORP
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional vehicle charging systems have low line utilization, excessive load on central nodes, high installation and maintenance costs, and difficulties in network signal transmission during power outages.
Multiple vehicle charging devices are interconnected, and relays and transformers are used to switch the signal transmission path in the power-on and power-off states to ensure that the network signal can be transmitted smoothly in any state.
It improves line utilization, reduces hardware costs, reduces reliance on central nodes, and ensures the reliability of network signal transmission during power outages.
Smart Images
Figure CN224392379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vehicle charging system. Background Technology
[0002] Traditional vehicle charging equipment typically consists of individual node devices connected together through a central network device to form a vehicle charging system. This topology is mainly used in Ethernet networks based on the IEEE 802.2 and IEEE 802.3 standards.
[0003] However, vehicle charging systems with the above topology have low line utilization, with each line being used only by a central node and one other node. The central node is overloaded, and if it fails, the entire network will be unable to function, placing excessively high demands on the reliability and redundancy of the central node. Furthermore, the installation and maintenance costs of vehicle charging systems with this topology are too high, and a large amount of cabling is required.
[0004] In addition, when the power is off, the network signal transmission between vehicle charging devices may not be smooth. Utility Model Content
[0005] This invention provides a vehicle charging system that allows for smooth network signal transmission between vehicle charging devices even when power is off.
[0006] The vehicle charging system of this utility model embodiment includes multiple vehicle charging devices. Each vehicle charging device provides power to a vehicle. Each vehicle charging device includes a first port and a second port. The first port of each vehicle charging device is connected to the second port of the preceding vehicle charging device. The second port of each vehicle charging device is connected to the first port of the following vehicle charging device.
[0007] In an embodiment of this utility model, the vehicle charging device transmits network signals via a first signal transmission path when powered on, and transmits the network signals via a second signal transmission path when powered off.
[0008] In an embodiment of this utility model, the plurality of vehicle charging devices include a first vehicle charging device and a second vehicle charging device. The first vehicle charging device transmits the network signal to the second vehicle charging device via the first signal transmission path in the power-on state, and the first vehicle charging device transmits the network signal to the second vehicle charging device via the second signal transmission path in the power-off state.
[0009] In an embodiment of this utility model, the first vehicle charging device includes a first connector, at least one first relay and a first transformer. The first relay switches to a first end in the power-on state to transmit the network signal, and the first relay switches to a second end in the power-off state to transmit the network signal.
[0010] In an embodiment of this utility model, the first vehicle charging device includes a second connector, at least two first relays and a second transformer. The second relay switches to a third terminal in the power-on state to transmit the network signal, and the second relay switches to a fourth terminal in the power-off state to transmit the network signal.
[0011] In an embodiment of this utility model, the first signal transmission path includes the first relay and the first transformer.
[0012] In an embodiment of this utility model, the second signal transmission path includes the first relay and the second relay.
[0013] In an embodiment of this utility model, the second vehicle charging device includes a second connector and a second transformer, but does not include a relay.
[0014] In an embodiment of this utility model, the first signal transmission path includes the first relay and the first transformer.
[0015] In an embodiment of this utility model, the second signal transmission path includes the first relay.
[0016] In an embodiment of this utility model, the first vehicle charging device transmits the network signal to the switching circuit via the first signal transmission path when it is powered on, and the switching circuit then transmits the network signal to the second vehicle charging device.
[0017] This embodiment of the vehicle charging system includes multiple vehicle charging devices for providing power to a vehicle. Each vehicle charging device is interconnected. In a power-off state, a network signal is transmitted from a first vehicle charging device to the next powered-on second vehicle charging device. The first vehicle charging device includes a first connector, at least one first relay, and a first transformer. The first relay switches to a first terminal in the power-on state to transmit the network signal. In the power-off state, the first relay switches to a second terminal to transmit the network signal.
[0018] In an embodiment of this utility model, the first vehicle charging device includes a second connector, at least two first relays and a second transformer. The second relay switches to a third terminal in the power-on state to transmit the network signal, and the second relay switches to a fourth terminal in the power-off state to transmit the network signal.
[0019] In an embodiment of this utility model, the first vehicle charging device transmits the network signal to the switching circuit through the first relay and the first transformer in the power-on state, and the switching circuit then transmits the network signal to the second vehicle charging device.
[0020] In an embodiment of this utility model, the second vehicle charging device includes a second connector and a second transformer, but does not include a relay. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of a vehicle charging system according to an embodiment of the present invention;
[0022] Figure 2 Show Figure 1 An exploded view of the vehicle charging equipment in the embodiment;
[0023] Figure 3A and Figure 3B The diagrams show the general transmission paths of the network signals of the vehicle charging device according to the present invention in the power-on and power-off states, respectively.
[0024] Figure 4A and Figure 4B The diagram shows a schematic representation of the transmission path of the network signal in the power-on and power-off states of a vehicle charging device according to another embodiment of the present invention. Detailed Implementation
[0025] Figure 1 This diagram illustrates a schematic representation of a vehicle charging system according to an embodiment of the present invention. Please refer to... Figure 1The vehicle charging system 100 includes a terminal 110 and multiple vehicle charging devices 120_1 to 120_10. The vehicle charging devices 120_1 to 120_10 provide power to the vehicle. Each vehicle charging device 120_1 to 120_10 is interconnected. Each vehicle charging device 120_1 to 120_10 includes a first port PT1 and a second port PT2. The first port PT1 of each vehicle charging device 120_1 to 120_10 is connected to the second port PT2 of the preceding vehicle charging device. The second port PT2 of each vehicle charging device 120_1 to 120_10 is connected to the first port PT1 of the following vehicle charging device. Taking vehicle charging device 120_2 as an example, vehicle charging device 120_1 is the preceding vehicle charging device of vehicle charging device 120_2, vehicle charging device 120_3 is the following vehicle charging device of vehicle charging device 120_2, and so on.
[0026] In this embodiment, the vehicle charging devices 120_1 to 120_10 are, for example, electric vehicle supply equipment (EVSE). The number of vehicle charging devices 120_1 to 120_10 is not intended to limit this invention.
[0027] Specifically, in this embodiment, the vehicle charging system 100 uses an Ethernet network topology to realize the transmission of information and data between its end users. Figure 1 In this topology, the transmission medium moves from one end user to another until all end users are connected. Data is transmitted in one direction along the loop between nodes, allowing information to pass quickly from one node to another. This structure eliminates the dependence of end users on a central system (e.g., terminal 110) for communication. In this example, the end users are vehicle charging devices 120_1 to 120_10.
[0028] Figure 2 Show Figure 1 An exploded view of the vehicle charging equipment in this embodiment. Please refer to... Figure 2 The vehicle charging device 200 includes an upper cover assembly 210, a mounting cover assembly 220, a middle cover assembly 230, a bottom cover assembly 240, and a rear plate 250. A circuit board 300 or control chip for controlling the overall operation of the vehicle charging device 200 can be installed in the mounting cover assembly 220. Figure 1 Vehicle charging equipment 120_1 to 120_10 can be used Figure 2 The device structure shown is used to implement this. However, the structure is only for illustrative purposes and is not intended to limit the scope of this utility model.
[0029] In embodiments of this invention, network signals can be successfully transmitted between vehicle charging devices 120_1 to 120_10 regardless of whether they are powered on, thus realizing an Ethernet network topology. For example, vehicle charging devices 120_1 to 120_10 can transmit network signals via a first signal transmission path when powered on, and via a second signal transmission path when powered off, as detailed below.
[0030] Figure 3A and Figure 3B The diagrams show the general transmission paths of the network signals in the power-on and power-off states of the vehicle charging device according to embodiments of the present invention. Please refer to... Figure 3A and Figure 3B Vehicle charging equipment 301, 302, for example, are Figure 1 The vehicle charging system 100 can be any two adjacent vehicle charging devices. Vehicle charging device 302 is the next vehicle charging device after vehicle charging device 301.
[0031] Vehicle charging device 301 (first vehicle charging device) includes connector 310A, two relays K1 and K2, and transformer T1. Relays K1 and K2 are coupled between connector 310A and transformer T1. Connector 310A, relays K1 and K2, and transformer T1 may be configured, for example, in circuit board 300. Vehicle charging device 302 (second vehicle charging device) includes connector 310B and transformer T2. Connectors 310A and 310B are, for example, connector plugs commonly used in Ethernet networks using twisted-pair cabling. In this embodiment, vehicle charging device 302 does not include relays.
[0032] exist Figure 3A In this configuration, the system is powered on. Therefore, the network signals S1 and S2 between the vehicle charging devices 301 and 302 can be transmitted through signal transmission paths P1 and P3, respectively. Specifically, connector 310A outputs network signal S1 to relays K1 and K2. Since the system is powered on at this time, relays K1 and K2 switch their switches to the first terminal N1. Therefore, network signal S1 is transmitted to transformer T1 through signal transmission path P1. Then, transformer T1 performs voltage conversion on network signal S1 and outputs it to Ethernet switch circuit 303. Ethernet switch circuit 303 then transmits network signal S1 to the second vehicle charging device 302. Ethernet switch circuit 303 can be, for example, a circuit chip configured in terminal 120.
[0033] On the other hand, connector 310B directly outputs the network signal S2 to transformer T2 via signal transmission path P3. Then, transformer T2 performs voltage conversion on the network signal S2 and outputs it to Ethernet switching circuit 303. In this way, when powered on, vehicle charging devices 301 and 302 can transmit network signals S1 and S2 via signal transmission paths P1 and P3 and Ethernet switching circuit 303.
[0034] exist Figure 3B In this case, the system is in a power-off state. At this time, the vehicle charging device 301 can still transmit the network signal S1 to the vehicle charging device 302 via signal transmission path P2. In this example, connector 310A outputs the network signal S1 to relays K1 and K2. Since the system is in a power-off state, relays K1 and K2 will switch their switches to the second terminal N2. Therefore, the network signal S1 is directly transmitted to connector 310B of the vehicle charging device 302 via signal transmission path P2.
[0035] In this way, even when the power is off, the vehicle charging devices 301 and 302 can still transmit network signals S1 through the signal transmission path P2, thus realizing an Ethernet network topology.
[0036] Figure 4A and Figure 4B The diagram shows a schematic representation of the transmission path of the network signal in the power-on and power-off states of a vehicle charging device according to another embodiment of the present invention. Figure 4A and Figure 4B The system architecture is similar to Figure 3A and Figure 3B However, the main difference between the two is that the vehicle charging device 402 includes two relays K3 and K4, which are coupled between the connector 410B and the transformer T2.
[0037] exist Figure 4A In the current state, the system is powered on. Relays K3 and K4 of the vehicle charging device 402 switch to their third terminal N3, thus the network signal S2 is transmitted to the transformer T2 via the signal transmission path P3'. Next, the transformer T2 performs voltage conversion on the network signal S2 before outputting it to the Ethernet switching circuit 403.
[0038] In this way, when powered on, the vehicle charging devices 401 and 402 can transmit network signals S1 and S2 through signal transmission paths P1 and P3' and Ethernet switching circuit 403.
[0039] exist Figure 4BIn this case, the system is in a power-off state. At this time, the vehicle charging device 401 can still transmit the network signal S1 to the vehicle charging device 402 through the signal transmission path P2'. In this example, because the system is in a power-off state, relays K1 and K2 will switch their switches to the second terminal N2, and relays K3 and K4 will switch their switches to the fourth terminal N4. Therefore, the network signal S1 is transmitted from relays K1 and K2 to relays K3 and K4 and connector 410B through the signal transmission path P2'.
[0040] In this way, even when the power is off, the vehicle charging devices 401 and 402 can still transmit network signals S1 through the signal transmission path P2', thus realizing an Ethernet network topology.
[0041] In addition, regarding Figures 1 to 4B The hardware structure of each component can be adequately taught, advised, and explained by common knowledge in the relevant technologies.
[0042] In summary, in this embodiment of the invention, network signals can be transmitted smoothly regardless of whether the vehicle charging devices are powered on or not, realizing an Ethernet network topology. Furthermore, the Ethernet network topology can be optimized, simplifying a system architecture using a large number of relays to one using a smaller number, thereby reducing hardware costs. Regardless of the number of relays, network signals between vehicle charging devices can be transmitted smoothly.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A charging system for a vehicle, characterized by comprising: include: Multiple vehicle charging devices are provided for supplying power to vehicles, wherein each vehicle charging device includes a first port and a second port, the first port of each vehicle charging device is connected to the second port of the preceding vehicle charging device, and the second port of each vehicle charging device is connected to the first port of the subsequent vehicle charging device.
2. The charging system for vehicle according to claim 1, characterized by, The vehicle charging device transmits network signals via a first signal transmission path when powered on, and via a second signal transmission path when powered off.
3. The vehicle charging system according to claim 2, characterized in that, The plurality of vehicle charging devices include a first vehicle charging device and a second vehicle charging device. In the power-on state, the first vehicle charging device transmits the network signal to the second vehicle charging device via the first signal transmission path, and in the power-off state, the first vehicle charging device transmits the network signal to the second vehicle charging device via the second signal transmission path.
4. The vehicle charging system according to claim 3, characterized in that, The first vehicle charging device includes a first connector, at least one first relay and a first transformer. The first relay switches to a first end in the power-on state to transmit the network signal, and switches to a second end in the power-off state to transmit the network signal.
5. The vehicle charging system according to claim 4, characterized in that, The first vehicle charging device includes a second connector, at least two first relays and a second transformer. The second relay switches to a third terminal in the power-on state to transmit the network signal, and switches to a fourth terminal in the power-off state to transmit the network signal.
6. The vehicle charging system according to claim 5, characterized in that, The first signal transmission path includes the first relay and the first transformer.
7. The vehicle charging system according to claim 5, characterized in that, The second signal transmission path includes the first relay and the second relay.
8. The vehicle charging system according to claim 4, characterized in that, The second vehicle charging device includes a second connector and a second transformer, but does not include a relay.
9. The vehicle charging system according to claim 8, characterized in that, The first signal transmission path includes the first relay and the first transformer.
10. The vehicle charging system according to claim 8, characterized in that, The second signal transmission path includes the first relay.
11. The vehicle charging system according to claim 3, characterized in that, In the powered-on state, the first vehicle charging device transmits the network signal to the switching circuit via the first signal transmission path, and the switching circuit then transmits the network signal to the second vehicle charging device.
12. A vehicle charging system, comprising: Multiple vehicle charging devices for providing power to vehicles are characterized in that each of the vehicle charging devices is interconnected, and in the event of a power outage, a network signal is transmitted from a first vehicle charging device to the next second vehicle charging device that is subsequently powered on. The first vehicle charging device includes a first connector, at least one first relay and a first transformer. The first relay switches to a first end in the power-on state to transmit the network signal, and switches to a second end in the power-off state to transmit the network signal.
13. The vehicle charging system according to claim 12, characterized in that, The first vehicle charging device includes a second connector, at least two first relays and a second transformer. The second relay switches to a third terminal in the power-on state to transmit the network signal, and switches to a fourth terminal in the power-off state to transmit the network signal.
14. The vehicle charging system according to claim 12, characterized in that, In the powered-on state, the first vehicle charging device transmits the network signal to the switching circuit through the first relay and the first transformer, and the switching circuit then transmits the network signal to the second vehicle charging device.
15. The vehicle charging system according to claim 12, characterized in that, The second vehicle charging device includes a second connector and a second transformer, but does not include a relay.