TWM656025U - Electric vehicle charging system - Google Patents

Abstract

An electric vehicle charging system includes a charger, a plurality of connectors, a plurality of charging plugs, a plurality of cables, and a plurality of switch devices. The charger includes a plurality of controlling devices that are independent to each other. The connectors are connected to the controlling devices. Each of the connecters is connected to each of the controlling devices. The charging plugs electrically and communicatively connected to one of the connectors. Each of the charging plugs is configured to be controlled by the controlling device to charge an electric vehicle. The cables are connected between the one of the connectors and the electric plugs. The switch devices are disposed on the cables and are configured to perform at least one of the following: detecting whether the charging plugs are connected to the electric vehicles; and operating connection and disconnection between the charging plugs and the cables.

Description

Electric Vehicle Charging System

The present disclosure relates to an electric vehicle charging system.

In the current electric vehicle charging system, the charging gun of a charging device can only charge one electric vehicle in a sequence, which results in the inability to improve the utilization rate of the charging device. In addition, when using multiple charging interface standards, each output charging gun of the charging device can only support one charging interface standard. When electric vehicles with different charging standards come, the charging gun cannot be used. This is also a long-standing problem in the relevant technical field. In detail. Therefore, the field is in urgent need of an electric vehicle charging system that can solve the above problems.

In view of this, one purpose of the present disclosure is to provide an electric vehicle charging system that can solve the above-mentioned problems.

In order to achieve the above-mentioned purpose, according to one embodiment of the present disclosure, an electric vehicle charging system includes a charging device, a plurality of connectors, a plurality of charging guns, a plurality of cables and a plurality of switching devices. The charging device includes a plurality of control devices, and the control devices are independent of each other. A plurality of connectors are connected to the control devices. Each of the connectors is connected to each of the control devices. A plurality of charging guns are electrically and communicatively connected to one of the connectors. Each of the charging guns is configured to be controlled by the control device to charge the electric vehicle. A plurality of cables are connected between one of the connectors and the charging gun. Each of the cables has a first end and a second end. One of the connectors is connected to the first end. Each of the charging guns is connected to the second end. A plurality of switching devices are disposed on the cable and configured to perform at least one of the following: detecting whether the charging gun is connected to a plurality of electric vehicles; and operating whether the charging gun is connected to the cable.

In one or more embodiments of the present disclosure, each of the charging guns is disposed on each of the switching devices.

In one or more embodiments of the present disclosure, the electric vehicle charging system further includes a management device electrically or communicatively connected to the charging device. The management device is configured to control the charging device to execute at least one of a plurality of charging strategies.

In one or more embodiments of the present disclosure, each of the control devices has a DC positive terminal, a DC negative terminal, a ground terminal, a communication terminal, and a control terminal. Each of the charging guns has a DC positive terminal, a DC negative terminal, a ground terminal, and a communication terminal. The DC positive terminal, the DC negative terminal, the ground terminal, and the communication terminal of each of the control devices are respectively connected to the DC positive terminal, the DC negative terminal, the ground terminal, and the communication terminal of each of the charging guns.

In one or more embodiments of the present disclosure, each of the control devices further includes a DC positive line, a DC negative line, a ground line, a communication line, and a control line. Each of the switching devices further includes a first DC positive line, a first DC negative line, a first ground line, a first communication line, and a control line, which are respectively connected to the DC positive line, the DC negative line, the ground line, the communication line, and the control line.

In one or more embodiments of the present disclosure, each of the switching devices further includes a second DC positive conductor, a second DC negative conductor, a second ground conductor, and a second communication conductor. The second DC positive conductor, the second DC negative conductor, the second ground conductor, and the second communication conductor are separated from the first DC positive conductor, the first DC negative conductor, the first ground conductor, and the first communication conductor, respectively.

In one or more embodiments of the present disclosure, each of the switching devices further includes a first relay, a second relay, a third relay, and a fourth relay, which are respectively disposed between the first DC positive wire and the second DC positive wire, between the first DC negative wire and the second DC negative wire, between the first ground wire and the second ground wire, and between the first communication wire and the second communication wire. Each of the switching devices includes a processing unit configured to control the first relay, the second relay, the third relay, and the fourth relay to open and close.

In one or more embodiments of the present disclosure, the second DC positive wire, the second DC negative wire, the second ground wire, and the second communication wire are respectively connected to the DC positive terminal, the DC negative terminal, the ground terminal, and the communication terminal of each of the charging guns.

In one or more embodiments of the present disclosure, each of the switching devices further includes a first DC positive wire, a first DC negative wire, a first ground wire, a first communication wire, and a control wire, which are respectively connected to the DC positive terminal, the DC negative terminal, the ground terminal, the communication terminal, and the control terminal of one of the connectors.

In one or more embodiments of the present disclosure, each of the switching devices includes a processing unit. One end of one of the remote connectors of the control wire is connected to the processing unit.

In one or more embodiments of the present disclosure, each of the switching devices includes a processing unit configured to detect whether the charging gun is connected to the electric vehicle.

In one or more embodiments of the present disclosure, the electric vehicle charging system further includes a selection device to accommodate a switching device.

In one or more embodiments of the present disclosure, the charging interfaces of the charging guns are the same.

In one or more embodiments of the present disclosure, the charging interface of the charging gun is different.

In one or more embodiments of the present disclosure, each of the control devices allows one of the switching devices connected thereto to be turned on in a timing sequence to charge the electric vehicle.

In one or more embodiments of the present disclosure, the electric vehicle charging system further includes a selection device connected to a charging gun for selection by a user of the electric vehicle, and the charging interfaces of the plurality of charging guns are different.

In summary, in the electric vehicle charging system disclosed herein, since the charging device has a plurality of control units and a connector connected to the control unit can branch out a plurality of charging guns, a charging device can charge a plurality of electric vehicles at the same time, thereby reducing the number of charging devices and contract capacity of the charging station and reducing expenses. In the electric vehicle charging system disclosed herein, since the electric vehicle charging system only needs to be equipped with a charging device having a plurality of independent control units, the complexity of the engineering and the construction cost of the charging device can be simplified. In the electric vehicle charging system disclosed in the present invention, since the switching device can detect the connection status between the charging gun and the electric vehicle, and the switching device can respond to different charging strategies to control the power on and off of the circuit, it can achieve the effect of reducing the idle time of the charging equipment and improving the utilization rate. In the electric vehicle charging system disclosed in the present invention, since the electric vehicle charging system is provided with a selection device, and the multiple charging guns connected to the selection device have different charging interfaces, not only can the problem of multiple electric vehicles being unable to charge due to the difference in their charging interfaces and the charging interfaces of the charging guns be solved, but the selection device can also provide protection for the switching device. In summary, the electric vehicle charging system disclosed herein can increase the utilization rate of the charging device and reduce the idle time of the charging device, thereby improving the efficiency of charging multiple electric vehicles.

The above description is only used to explain the problem to be solved by the present disclosure, the technical means for solving the problem, and the effects produced, etc. The specific details of the present disclosure will be introduced in detail in the following implementation method and related drawings.

The following will disclose multiple embodiments of the present disclosure with drawings. For the purpose of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. In other words, in some embodiments of the present disclosure, these practical details are not necessary. In addition, in order to simplify the drawings, some commonly used structures and components will be depicted in the drawings in a simple schematic manner. The same reference numerals will be used to represent the same or similar components in all drawings.

The following will describe in detail the structure, function and connection relationship of each component included in the electric vehicle charging system 100 of this embodiment.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a functional block diagram of an electric vehicle charging system 100 according to one embodiment of the present disclosure. FIG. 2 is a schematic diagram of an electric vehicle charging system 100 according to one embodiment of the present disclosure. As shown in FIG. 1 and FIG. 2, in this embodiment, the electric vehicle charging system 100 includes a charging device 110, a connector 122, a connector 124, a charging gun 132, a charging gun 134, a charging gun 136, a charging gun 138, a cable CB1, a cable CB2, a cable CB3, a cable CB4, a switching device 142, a switching device 144, a switching device 146, and a switching device 148. The charging device 110 includes a control device 112 and a control device 114. In this embodiment, the electric vehicle charging system 100 substantially includes a plurality of connectors, a plurality of charging guns, a plurality of cables, and a plurality of switching devices. In some embodiments, the number of connectors is more than two. In some embodiments, the number of charging guns, cables, and switching devices is more than two. In this embodiment, the charging device 110 substantially includes a plurality of control devices. In some embodiments, the number of control devices is more than two.

In some embodiments, the electric vehicle may be, for example, an electric scooter, an electric automobile, an electric bus, or other vehicles that can use electricity as a driving energy source.

Please continue to refer to Figure 1. As shown in Figure 1, the control device 112 and the control device 114 are configured to control whether the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 are charged. In the present embodiment, the control device 112 and the control device 114 are independent of each other. Therefore, the electric vehicle charging system 100 can simultaneously allow the control device 112 to charge the electric vehicle EV1 or the electric vehicle EV2 and allow the control device 114 to charge the electric vehicle EV3 or the electric vehicle EV4. Specifically, the control device 112 only allows one of the electric vehicle EV1 and the electric vehicle EV2 to be charged in a sequence, and the control device 114 only allows one of the electric vehicle EV3 and the electric vehicle EV4 to be charged in a sequence. The connector 122 is connected to the control device 112. The connector 124 is connected to the control device 114. The charging guns 132 and 134 are both electrically and communicatively connected to the connector 122. The charging guns 136 and 138 are both connected to the connector 124. The charging guns 132, 134, 136, and 138 are configured to be controlled by the control device 112 and the control device 114 to charge the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4. The cable CB1 is connected between the charging gun 132 and the connector 122. The cable CB2 is connected between the charging gun 134 and the connector 122. Cable CB3 is connected between charging gun 136 and connector 124. Cable CB4 is connected between charging gun 138 and connector 124. As shown in FIG. 1, in some embodiments, each of cable CB1, cable CB2, cable CB3, and cable CB4 has a first end E1 and a second end E2. Connector 122 connects the first end E1 of cable CB1 and the first end E1 of cable CB2. Charging gun 132 is connected to the second end E2 of cable CB1. Charging gun 134 is connected to the second end E2 of cable CB2. Connector 124 is connected to the first end E1 of cable CB3 and the first end E1 of cable CB4. Charging gun 136 is connected to the second end E2 of cable CB3. The charging gun 138 is connected to the second end E2 of the cable CB4. The switching device 142, the switching device 144, the switching device 146 and the switching device 148 are respectively arranged on the cable CB1, the cable CB2, the cable CB3 and the cable CB4. The switching device 142 is configured to operate whether the charging gun 132 is connected to the cable CB1. The switching device 144 is configured to operate whether the charging gun 134 is connected to the cable CB2. The switching device 146 is configured to operate whether the charging gun 136 is connected to the cable CB3. The switching device 148 is configured to operate whether the charging gun 138 is connected to the cable CB4.

In some embodiments, the switch device 142 is further configured to detect whether the charging gun 132 is connected to the electric vehicle EV1. In some embodiments, the switch device 144 is further configured to detect whether the charging gun 134 is connected to the electric vehicle EV2. In some embodiments, the switch device 146 is further configured to detect whether the charging gun 136 is connected to the electric vehicle EV3. In some embodiments, the switch device 148 is further configured to detect whether the charging gun 138 is connected to the electric vehicle EV4.

As shown in FIG. 1 , in some embodiments, the switching device 142 , the switching device 144 , the switching device 146 , and the switching device 148 are respectively close to the second end E2 of the cable CB1 , the cable CB2 , the cable CB3 , and the cable CB4 .

As shown in FIG. 1 and FIG. 2 , in some embodiments, the charging gun 132 , the charging gun 134 , the charging gun 136 , and the charging gun 138 are respectively disposed on the switching device 142 , the switching device 144 , the switching device 146 , and the switching device 148 .

In some implementations, switching device 142, switching device 144, switching device 146, and switching device 148 include relays to control powering on and off of circuits.

In some embodiments, the charging interface of the charging gun 132 is the same as that of the charging gun 134, and the charging interface of the charging gun 136 is the same as that of the charging gun 138. In some embodiments, the charging interfaces of the charging guns 132, 134, 136, and 138 are different.

In some embodiments, the charging interface of charging gun 132, charging gun 134, charging gun 136, and charging gun 138 may be, for example, CCS1, CCS2, CHAdeMO, GB/T, TPC (NACS), or other possible charging interfaces.

In some embodiments, the first ends E1 of the cables CB1 and CB2 converge at the joint 122. In some embodiments, the first ends E1 of the cables CB3 and CB4 converge at the joint 124.

In some embodiments, the control device 112 and the control device 114 are configured to execute a plurality of charging strategies. For example, the charging strategy may include charging the electric vehicles EV1-EV4 in sequence according to at least one of the following: (i) the time the electric vehicle is connected to the charging gun; (ii) the battery capacity (SoC); (iii) the battery temperature; and (iv) the expected departure time of the electric vehicle (i.e., the time when the electric vehicle is expected to leave the charging device 110). However, the present disclosure is not intended to limit the types of charging strategies. The above-mentioned charging strategies will be described below.

In some embodiments, the control device 112 and the control device 114 are configured to charge the electric vehicle based on the order of the time when the electric vehicle and the charging gun are connected. Specifically, the control device 112 and the control device 114 determine the order in which the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 are charged according to the time sequence in which the charging gun 132, the charging gun 134, the charging gun 136, and the charging gun 138 are connected to the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4, respectively. Adopting a charging strategy based on the connection time of the electric vehicle and the charging gun can ensure that the idle time of the charging device 110 is reduced when the charging gun 132, the charging gun 134, the charging gun 136 and the charging gun 138 are not connected to the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3 and the electric vehicle EV4 at the same time.

In one usage scenario, for example, if the order of connection time is: charging gun 132 is connected to electric vehicle EV1; charging gun 134 is connected to electric vehicle EV2; charging gun 136 is connected to electric vehicle EV3; charging gun 138 is connected to electric vehicle EV4, then control device 112 and control device 114 determine that "charging gun 132 is connected to electric vehicle EV1" is earlier than "charging gun 134 is connected to electric vehicle EV2", and determine that "charging gun 136 is connected to electric vehicle EV3" is earlier than "charging gun 138 is connected to electric vehicle EV4". However, since the electric vehicles EV1 and EV2 are controlled by the control device 112, and the electric vehicles EV3 and EV4 are controlled by the control device 114 which is independent of the control device 112, the control device 112 and the control device 114 first charge the electric vehicles EV1 and EV3 respectively. After the electric vehicles EV1 and EV3 are fully charged and the charging is completed, the control device 112 and the control device 114 then charge the electric vehicles EV2 and EV4 respectively.

In some embodiments, the control device 112 and the control device 114 are further configured to charge the electric vehicles in a sequence of most to least based on the battery capacity (SoC) of each electric vehicle. Specifically, the control device 112 and the control device 114 charge the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 in a sequence of most to least according to the remaining power of the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4. The charging strategy based on the sequence of most to least remaining power can achieve the effect of charging one of the electric vehicles as quickly as possible.

In one usage scenario, for example, if the battery capacities (SoC) of electric vehicle EV1, electric vehicle EV2, electric vehicle EV3, and electric vehicle EV4 are 80%, 60%, 40%, and 20%, respectively, control device 112 and control device 114 first charge electric vehicle EV1 and electric vehicle EV3, respectively, and after electric vehicle EV1 and electric vehicle EV3 are fully charged and charging is completed, control device 112 and control device 114 then charge electric vehicle EV2 and electric vehicle EV4, respectively. In this case, the order of completing charging may be: electric vehicle EV1; electric vehicle EV2; electric vehicle EV3; electric vehicle EV4. In some implementations, the order of completing charging may be: electric vehicle EV1; electric vehicle EV3; electric vehicle EV2; electric vehicle EV1. In summary, such a charging strategy can enable one of the electric vehicles (eg, electric vehicle EV1) to be fully charged as quickly as possible.

In some embodiments, the control device 112 and the control device 114 are further configured to charge the electric vehicles in order from small to large based on the battery capacity of each electric vehicle. Specifically, the control device 112 and the control device 114 charge the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 in order from small to large according to the remaining power of the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4. The charging strategy based on the order of the remaining power from large to small can achieve the effect of charging multiple electric vehicles at the same time as much as possible.

In one usage scenario, for example, if the battery capacities (SoC) of electric vehicle EV1, electric vehicle EV2, electric vehicle EV3, and electric vehicle EV4 are 80%, 60%, 40%, and 20%, respectively, control device 112 and control device 114 first charge electric vehicle EV2 and electric vehicle EV4, respectively, and after electric vehicle EV2 and electric vehicle EV4 are fully charged and charging is completed, control device 112 and control device 114 then charge electric vehicle EV1 and electric vehicle EV3, respectively. Since the battery capacity (SoC) of electric vehicle EV4 is the smallest among all electric vehicles, when electric vehicle EV4 is fully charged, control device 112 has just completed charging of electric vehicle EV1 and electric vehicle EV2. In this case, the electric vehicle EV1, the electric vehicle EV2 and the electric vehicle EV4 can be charged at similar times. In short, such a charging strategy can enable several electric vehicles to be charged at the same time as much as possible.

In some embodiments, the control device 112 and the control device 114 are further configured to charge the electric vehicles based on the battery temperature of each electric vehicle in order from low to high. Specifically, the control device 112 and the control device 114 charge the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 in order from low to high battery temperature. The charging strategy based on the order of battery temperature from low to high can achieve the effect of avoiding charging an electric vehicle with an overly high battery temperature and causing ineffective charging.

In one usage scenario, for example, if the battery temperatures of electric vehicle EV1, electric vehicle EV2, electric vehicle EV3, and electric vehicle EV4 are 90°C, 70°C, 50°C, and 30°C, respectively, control device 112 and control device 114 first charge electric vehicle EV2 and electric vehicle EV4, respectively, and after electric vehicle EV2 and electric vehicle EV4 are fully charged and charging is completed, the battery temperatures of electric vehicle EV1 and electric vehicle EV3 have also dropped. Then, control device 112 and control device 114 charge electric vehicle EV1 and electric vehicle EV3, respectively. In short, such a charging strategy can avoid charging overheated batteries and causing ineffective charging, thereby shortening the charging time for electric vehicles EV1-EV4 at the same time.

In some embodiments, the control device 112 and the control device 114 are further configured to charge the electric vehicles based on the expected departure time of each electric vehicle in order from early to late. Specifically, the control device 112 and the control device 114 charge the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 in order from early to late according to the expected departure time of the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4. The charging strategy based on the expected departure time in order from early to late can achieve the effect of preventing the electric vehicle with an earlier expected departure time from being unable to arrive at the next destination in time.

In one usage scenario, for example, if the estimated departure times of electric vehicles EV1, EV2, EV3, and EV4 are 9:00, 8:40, 8:20, and 8:00, respectively, the control device 112 and the control device 114 first charge the electric vehicles EV2 and EV4, respectively, and after the electric vehicles EV2 and EV4 are fully charged and the charging is completed, the control device 112 and the control device 114 then charge the electric vehicles EV1 and EV3, respectively. In short, such a charging strategy can achieve the effect of enabling electric vehicles EV1-EV4 to leave the station on time.

In some embodiments, the control device 112 and the control device 114 may simultaneously execute the above different charging strategies. For example, the control device 112 may adopt a charging strategy in which the battery capacity of the electric vehicle is charged in a sequence from large to small, while the control device 114 may adopt a charging strategy in which the battery capacity of the electric vehicle is charged in a sequence from small to large.

Please refer to Figure 3. Figure 3 is a functional block diagram of an electric vehicle charging system 100 according to one embodiment of the present disclosure. The structural configuration of the electric vehicle charging system 100 in Figure 3 is substantially similar to the structural configuration of the electric vehicle charging system 100 in Figure 1. The difference is that the electric vehicle charging system 100 in Figure 3 further includes a management device MA relative to the electric vehicle charging system 100 in Figure 1. As shown in Figure 3, the management device MA is electrically or communicatively connected to the charging device 110. In some embodiments, the management device MA is configured to control the charging device 110 to execute at least one of the above-mentioned several charging strategies. In some embodiments, the management device MA is substantially configured to control several charging devices 110 to execute at least one of the above-mentioned several charging strategies. Specifically, the control device 112 and the control device 114 can determine the order in which the electric vehicle EV1, the electric vehicle EV2, the electric vehicle EV3, and the electric vehicle EV4 are charged according to any customized priority. The charging strategy based on the preset priority can shorten the time for the control device 112 and the control device 114 to perform the judgment.

In some embodiments, the management device MA may be, for example, a charging station management system (CSMS). In some embodiments, the management device MA may be a combination of a computer and a software or a combination of a server and a software. The management device MA connects to one or more charging devices 110 via a wired network, a wireless network, or the Internet and manages them.

Please refer to FIG. 4. FIG. 4 is a schematic diagram of a circuit of an electric vehicle charging system 100 according to an embodiment of the present disclosure. As shown in FIG. 4, in this embodiment, the control device 112 of the electric vehicle charging system 100 has a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, a communication terminal COM, and a control terminal CTRL. The charging gun 132 and the charging gun 134 each have a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, and a communication terminal COM. The DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the control device 112 are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 132, and the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the control device 112 are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 134.

Similarly, the control device 114 of the electric vehicle charging system 100 has a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, a communication terminal COM, and a control terminal CTRL. The charging gun 136 and the charging gun 138 each have a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, and a communication terminal COM. The DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the control device 114 are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 136, and the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the control device 114 are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 138.

Please continue to refer to FIG. 4. As shown in FIG. 4, the control device 112 includes a DC positive line 1121, a DC negative line 1122, a ground line 1123, a communication line 1124, and a control line 1125. The control device 114 includes a DC positive line 1141, a DC negative line 1142, a ground line 1143, a communication line 1144, and a control line 1145. The switching device 142 includes a first DC positive line 1421A, a first DC negative line 1422A, a first ground line 1423A, a first communication line 1424A, and a control line 1425. The first DC positive wire 1421A, the first DC negative wire 1422A, the first ground wire 1423A, the first communication wire 1424A and the control wire 1425 are respectively connected to the DC positive wire 1121, the DC negative wire 1122, the ground wire 1123, the communication wire 1124 and the control wire 1125.

Similarly, the switching device 144 includes a first DC positive wire 1441A, a first DC negative wire 1442A, a first ground wire 1443A, a first communication wire 1444A, and a control wire 1445. The first DC positive wire 1441A, the first DC negative wire 1442A, the first ground wire 1443A, the first communication wire 1444A, and the control wire 1445 are connected to the DC positive wire 1121, the DC negative wire 1122, the ground wire 1123, the communication wire 1124, and the control wire 1125, respectively.

Similarly, the switching device 146 includes a first DC positive wire 1461A, a first DC negative wire 1462A, a first ground wire 1463A, a first communication wire 1464A, and a control wire 1465. The first DC positive wire 1461A, the first DC negative wire 1462A, the first ground wire 1463A, the first communication wire 1464A, and the control wire 1465 are connected to the DC positive wire 1141, the DC negative wire 1142, the ground wire 1143, the communication wire 1144, and the control wire 1145, respectively.

Similarly, the switching device 148 includes a first DC positive wire 1481A, a first DC negative wire 1482A, a first ground wire 1483A, a first communication wire 1484A, and a control wire 1485. The first DC positive wire 1481A, the first DC negative wire 1482A, the first ground wire 1483A, the first communication wire 1484A, and the control wire 1485 are connected to the DC positive wire 1141, the DC negative wire 1142, the ground wire 1143, the communication wire 1144, and the control wire 1145, respectively.

Please continue to refer to FIG. 4. As shown in FIG. 4, the switching device 142 includes a second DC positive conductor 1421B, a second DC negative conductor 1422B, a second ground conductor 1423B, and a second communication conductor 1424B. The second DC positive conductor 1421B, the second DC negative conductor 1422B, the second ground conductor 1423B, and the second communication conductor 1424B are separated from the first DC positive conductor 1421A, the first DC negative conductor 1422A, the first ground conductor 1423A, and the first communication conductor 1424A, respectively. As shown in FIG. 4 , the second DC positive wire 1421B, the second DC negative wire 1422B, the second ground wire 1423B and the second communication wire 1424B are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 132.

Similarly, the switching device 144 includes a second DC positive wire 1441B, a second DC negative wire 1442B, a second ground wire 1443B, and a second communication wire 1444B. The second DC positive wire 1441B, the second DC negative wire 1442B, the second ground wire 1443B, and the second communication wire 1444B are separated from the first DC positive wire 1441A, the first DC negative wire 1442A, the first ground wire 1443A, and the first communication wire 1444A, respectively. As shown in FIG. 4 , the second DC positive wire 1441B, the second DC negative wire 1442B, the second ground wire 1443B and the second communication wire 1444B are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 134.

Similarly, the switching device 146 includes a second DC positive wire 1461B, a second DC negative wire 1462B, a second ground wire 1463B, and a second communication wire 1464B. The second DC positive wire 1461B, the second DC negative wire 1462B, the second ground wire 1463B, and the second communication wire 1464B are separated from the first DC positive wire 1461A, the first DC negative wire 1462A, the first ground wire 1463A, and the first communication wire 1464A, respectively. As shown in FIG. 4 , the second DC positive wire 1461B, the second DC negative wire 1462B, the second ground wire 1463B and the second communication wire 1464B are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 136.

Similarly, the switching device 148 includes a second DC positive conductor 1481B, a second DC negative conductor 1482B, a second ground conductor 1483B, and a second communication conductor 1484B. The second DC positive conductor 1481B, the second DC negative conductor 1482B, the second ground conductor 1483B, and the second communication conductor 1484B are separated from the first DC positive conductor 1481A, the first DC negative conductor 1482A, the first ground conductor 1483A, and the first communication conductor 1484A, respectively. As shown in FIG. 4 , the second DC positive wire 1481B, the second DC negative wire 1482B, the second ground wire 1483B and the second communication wire 1484B are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE and the communication terminal COM of the charging gun 138.

Please continue to refer to FIG. 4. As shown in FIG. 4, the switching device 142 further includes a relay RL disposed between the first DC positive conductor 1421A and the second DC positive conductor 1421B. The switching device 142 further includes a relay RL disposed between the first DC negative conductor 1422A and the second DC negative conductor 1422B. The switching device 142 further includes a relay RL disposed between the first ground conductor 1423A and the second ground conductor 1423B. The switching device 142 further includes a relay RL disposed between the first communication conductor 1424A and the second communication conductor 1424B.

Similarly, the switching device 144 further includes a relay RL disposed between the first DC positive conductor 1441A and the second DC positive conductor 1441B. The switching device 144 further includes a relay RL disposed between the first DC negative conductor 1442A and the second DC negative conductor 1442B. The switching device 144 further includes a relay RL disposed between the first ground conductor 1443A and the second ground conductor 1443B. The switching device 144 further includes a relay RL disposed between the first communication conductor 1444A and the second communication conductor 1444B.

Similarly, the switching device 146 further includes a relay RL disposed between the first DC positive conductor 1461A and the second DC positive conductor 1461B. The switching device 146 further includes a relay RL disposed between the first DC negative conductor 1462A and the second DC negative conductor 1462B. The switching device 146 further includes a relay RL disposed between the first ground conductor 1463A and the second ground conductor 1463B. The switching device 146 further includes a relay RL disposed between the first communication conductor 1464A and the second communication conductor 1464B.

Similarly, the switching device 148 further includes a relay RL disposed between the first DC positive conductor 1481A and the second DC positive conductor 1481B. The switching device 148 further includes a relay RL disposed between the first DC negative conductor 1482A and the second DC negative conductor 1482B. The switching device 148 further includes a relay RL disposed between the first ground conductor 1483A and the second ground conductor 1483B. The switching device 148 further includes a relay RL disposed between the first communication conductor 1484A and the second communication conductor 1484B.

The following will describe in detail the structure, function and connection relationship of each component included in the electric vehicle charging system 200 of this embodiment.

Please refer to FIG. 5 and FIG. 6. FIG. 5 is a functional block diagram of an electric vehicle charging system 200 according to another embodiment of the present disclosure. FIG. 6 is a schematic diagram of an electric vehicle charging system 200 according to another embodiment of the present disclosure. As shown in FIG. 5, in this embodiment, the electric vehicle charging system 200 includes a charging device 210, a connector 222, a connector 224, a charging gun 232, a charging gun 234, a charging gun 236, a charging gun 238, a cable CB1, a cable CB2, a cable CB3, a cable CB4, a switching device 242, a switching device 244, a switching device 246, and a switching device 248. The charging device 210 includes a control device 212 and a control device 214. In this embodiment, the electric vehicle charging system 200 substantially includes a plurality of connectors, a plurality of charging guns, a plurality of cables, and a plurality of switching devices. In some embodiments, the number of connectors is more than two. In some embodiments, the number of charging guns, cables, and switching devices is more than two. In this embodiment, the charging device 210 substantially includes a plurality of control devices. In some embodiments, the number of control devices is more than two.

In the present embodiment, the structural configuration of the electric vehicle charging system 200 is substantially similar to the structural configuration of the electric vehicle charging system 100. The difference is that the electric vehicle charging system 200 further includes a selection device 252 and a selection device 254. The selection device 252 accommodates (accommodates) the switching device 242 and the switching device 244. The selection device 254 accommodates (accommodates) the switching device 246 and the switching device 248. As shown in Figures 5 and 6, the charging gun 232 and the charging gun 234 are connected to the selection device 252, and the charging gun 236 and the charging gun 238 are connected to the selection device 254. The selection device 252 or the selection device 254 is configured to allow the user or driver of the electric vehicle EV1 or the electric vehicle EV2 to select the charging gun to be used. In addition, the charging interfaces of the charging gun 232 and the charging gun 234 are different. The charging interfaces of the charging gun 236 and the charging gun 238 are different. In some embodiments, the charging interfaces of the charging guns 232, 234, 236, and 238 are different. Since the structural configuration of the electric vehicle charging system 200 is roughly similar to the structural configuration of the electric vehicle charging system 100, the detailed functions of some components of the electric vehicle charging system 200 will not be repeated.

In some embodiments, charging gun 232 and charging gun 234 correspond to electric vehicle EV1. In some embodiments, charging gun 236 and charging gun 238 correspond to electric vehicle EV2.

In some implementations, the selection device 252 and the selection device 254 can provide protection for the switching device 242, the switching device 244, the switching device 246, and the switching device 248. As shown in FIG5, in some implementations, the selection device 252 and the selection device 254 each correspond to a parking space.

In one usage scenario, for example, the driver or charging user of the electric vehicle EV1 can park the electric vehicle EV1 in a parking space corresponding to the charging gun 232 and the charging gun 234. Then, the selection device 252 is configured for the driver or charging user of the electric vehicle EV1 to select one of the charging gun 232 and the charging gun 234. For example, the charging interface of the electric vehicle EV1 is the same as the charging interface of the charging gun 232, while the charging interface of the electric vehicle EV1 is different from the charging interface of the charging gun 234, then the driver or charging user of the electric vehicle EV1 can select to use the charging gun 232 through the selection device 252. In some embodiments, the selection device 252 may include a user interface for the driver or the charging user to click, but the present disclosure is not limited thereto. The interaction mode of the selection device 254, the charging gun 236, the charging gun 238 and the electric vehicle EV2 is similar to the above description, so it will not be repeated here.

Please continue to refer to Figure 5. As shown in Figure 5, the control device 212 and the control device 214 are configured to control whether the electric vehicle EV1 and the electric vehicle EV2 are charged. In the present embodiment, the control device 212 and the control device 214 are independent of each other. Therefore, the electric vehicle charging system 200 can simultaneously allow the control device 212 to charge the electric vehicle EV1 and allow the control device 214 to charge the electric vehicle EV2. The switching device 242 is configured to detect whether the charging gun 232 is connected to the electric vehicle EV1. The switching device 244 is configured to detect whether the charging gun 234 is connected to the electric vehicle EV1. The switching device 246 is configured to detect whether the charging gun 236 is connected to the electric vehicle EV2. The switch device 248 is configured to detect whether the charging gun 238 is connected to the electric vehicle EV2. With this mechanism, the driver or charging user only needs to insert a charging gun that meets the charging interface standard of his vehicle, and the charging system can automatically select the corresponding charging interface without manual selection.

As shown in FIG. 5 , in some embodiments, the switching device 242 , the switching device 244 , the switching device 246 , and the switching device 248 are respectively close to the second end E2 of the cable CB1 , the cable CB2 , the cable CB3 , and the cable CB4 .

In some embodiments, the charging interface of charging gun 232, charging gun 234, charging gun 236, and charging gun 238 may be, for example, CCS1, CCS2, CHAdeMO, GB/T, TPC (NACS), or other possible charging interfaces.

In some embodiments, the first ends E1 of the cables CB1 and CB2 converge at the joint 222. In some embodiments, the first ends E1 of the cables CB3 and CB4 converge at the joint 224.

In some embodiments, the control device 212 and the control device 214 are configured to execute a plurality of charging strategies. Since the structural configurations of the control device 212 and the control device 214 are substantially similar to the structural configurations of the control device 112 and the control device 114, they will not be described in detail here.

In some implementations, the control device 212 and the control device 214 can also execute different charging strategies simultaneously.

Please refer to Figure 7. Figure 7 is a schematic diagram of the circuit of an electric vehicle charging system 200 according to another embodiment of the present disclosure. The circuit structure of the electric vehicle charging system 200 is substantially similar to the circuit structure of the electric vehicle charging system 100. The control device 212 and the control device 214 each have a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, a communication terminal COM, and a control terminal CTRL. The charging gun 232, the charging gun 234, the charging gun 236, and the charging gun 238 each have a DC positive terminal DC+, a DC negative terminal DC-, a ground terminal PE, and a communication terminal COM. The control device 212 includes a DC positive line 2121, a DC negative line 2122, a ground line 2123, a communication line 2124, and a control line 2125. The control device 214 includes a DC positive line 2141 , a DC negative line 2142 , a ground line 2143 , a communication line 2144 , and a control line 2145 .

Please continue to refer to FIG. 7. As shown in FIG. 7, the switching device 242 includes a first DC positive conductor 2421A, a first DC negative conductor 2422A, a first ground conductor 2423A, a first communication conductor 2424A, a second DC positive conductor 2421B, a second DC negative conductor 2422B, a second ground conductor 2423B, a second communication conductor 2424B, a relay RL, and a control conductor 2425. Similarly, the switching device 244 includes a first DC positive wire 2441A, a first DC negative wire 2442A, a first ground wire 2443A, a first communication wire 2444A, a second DC positive wire 2441B, a second DC negative wire 2442B, a second ground wire 2443B, a second communication wire 2444B, a relay RL and a control wire 2445. Similarly, the switching device 246 includes a first DC positive wire 2461A, a first DC negative wire 2462A, a first ground wire 2463A, a first communication wire 2464A, a second DC positive wire 2461B, a second DC negative wire 2462B, a second ground wire 2463B, a second communication wire 2464B, a relay RL and a control wire 2465. Similarly, the switching device 248 includes a first DC positive wire 2481A, a first DC negative wire 2482A, a first ground wire 2483A, a first communication wire 2484A, a second DC positive wire 2481B, a second DC negative wire 2482B, a second ground wire 2483B, a second communication wire 2484B, a relay RL and a control wire 2485.

In the present embodiment, since the circuit structure of the electric vehicle charging system 200 is substantially similar to the circuit structure of the electric vehicle charging system 100, the circuit connection relationship of each component of the electric vehicle charging system 200 will not be described in detail here.

Please refer to Figure 8. Figure 8 is a schematic diagram of the circuit of the electric vehicle charging system 100 according to one embodiment of the present disclosure. Since the structural configuration of the electric vehicle charging system 200 is roughly similar to the structural configuration of the electric vehicle charging system 100, for the sake of simplicity, the electric vehicle charging system 100 is directly used as an example for explanation. As shown in Figure 8, in the present embodiment, the switching device 142 further includes a processing unit PU. The processing unit PU is configured to control the opening and closing of all relays RL. Specifically, the opening and closing of the relay RL respectively causes the circuit to be de-energized and energized. As shown in FIG8 , the first DC positive wire 1421A, the first DC negative wire 1422A, the first ground wire 1423A, the first communication wire 1424A and the control wire 1425 of the switching device 142 are respectively connected to the DC positive terminal DC+, the DC negative terminal DC-, the ground terminal PE, the communication terminal COM and the control terminal CTRL of the connector 122. As shown in FIG8 , in some embodiments, one end of the control wire 1425 away from the connector 122 is connected to the processing unit PU.

As shown in FIG. 8 , in some embodiments, the processing unit PU of the switching device 142 is further configured to detect whether the charging gun 132 is connected to the electric vehicle EV1.

In some embodiments, the electric vehicle charging system 100 is applicable to charging a fleet of at least electric vehicles EV1-EV4. In some embodiments, the electric vehicle charging system 200 is applicable to charging an electric vehicle EV1 and an electric vehicle EV2 having different charging interfaces.

By implementing the electric vehicle charging system 100 and the electric vehicle charging system 200 disclosed herein, multiple electric vehicles can be charged more efficiently, and the number of charging devices and the construction cost can be reduced.

From the above detailed description of the specific implementation of the present disclosure, it can be clearly seen that in the electric vehicle charging system disclosed in the present disclosure, since the charging device has a plurality of control units, and a connector connected to the control unit can branch out a plurality of charging guns, a charging device can charge a plurality of electric vehicles at the same time, thereby reducing the number of charging devices and contract capacity of the charging station and reducing expenses. In the electric vehicle charging system disclosed in the present disclosure, since the electric vehicle charging system only needs to be provided with a charging device having a plurality of independent control units, it can achieve the effect of simplifying the complexity of the project and reducing the construction cost of the charging device. In the electric vehicle charging system disclosed in the present invention, since the switching device can detect the connection status between the charging gun and the electric vehicle, and the switching device can respond to different charging strategies to control the power on and off of the circuit, the idle time of the charging device can be reduced. In the electric vehicle charging system disclosed in the present invention, since the electric vehicle charging system is provided with a selection device, and the multiple charging guns connected to the selection device have different charging interfaces, not only can the problem of multiple electric vehicles being unable to charge due to the different charging interfaces of the charging guns be solved, but the selection device can also provide protection for the switching device. In summary, the electric vehicle charging system disclosed herein can increase the utilization rate of the charging device and reduce the idle time of the charging device, thereby improving the efficiency of charging multiple electric vehicles.

Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.

The above content summarizes the features of several implementation methods so that those familiar with this technology can better understand the state of this case. Those familiar with this technology should understand that without departing from the spirit and scope of this case, the above content can be easily used as a basis for designing or modifying other changes to implement the same purpose and/or achieve the same advantages of the implementation methods introduced in this article. The above content should be understood as an example of this disclosure, and its protection scope should be based on the scope of the patent application.

100,200:Electric vehicle charging system 110,210:Charging equipment 112,114,212,214:Control device 1121,1141,2121,2141:DC positive line 1122,1142,2122,2142:DC negative line 1123,1143,2123,2143:Ground line 1124,1144,2124,2144:Communication line 1125,1145,2125,2145:Control line 122,124,222,224:Connector 132,134,136,138,232,234,236,238:Charging gun 142,144,146,148,242,244,246,248: switching device 1421A,1441A,1461A,1481A,2421A,2441A,2461A,2481A: first DC positive conductor 1421B,1441B,1461B,1481B,2421B,2441B,2461B,2481B: second DC positive conductor 1422A,1442A,1462A,1482A,2422A,2442A,2462A,2482A: first DC negative conductor 1422B,1442B,1462B,1482B,2422B,2442B,2462B,2482B: Second DC negative conductor 1423A,1443A,1463A,1483A,2423A,2443A,2463A,2483A: First ground conductor 1423B,1443B,1463B,1483B,2423B,2443B,2463B,2483B: Second ground conductor 1424A,1444A,1464A,1484A,2424A,2444A,2464A,2484A: First communication conductor 1424B,1444B,1464B,1484B,2424B,2444B,2464B,2484B: second communication wire 1425,1445,1465,1485,2425,2445,2465,2485: control wire 252,254: selection device CB1,CB2,CB3,CB4: cable COM: communication terminal CTRL: control terminal DC+: DC positive terminal DC-: DC negative terminal E1: first terminal E2: second terminal EV1,EV2,EV3,EV4: electric vehicle MA: management equipment PE: ground terminal PU: processing unit RL: relay

In order to make the above and other purposes, features, advantages and implementation methods of the present disclosure more clearly understandable, the attached drawings are described as follows: Figure 1 is a functional block diagram of an electric vehicle charging system according to one implementation method of the present disclosure. Figure 2 is a schematic diagram of an electric vehicle charging system according to one implementation method of the present disclosure. Figure 3 is a functional block diagram of an electric vehicle charging system according to one implementation method of the present disclosure. Figure 4 is a schematic diagram of a circuit of an electric vehicle charging system according to one implementation method of the present disclosure. Figure 5 is a functional block diagram of an electric vehicle charging system according to another implementation method of the present disclosure. Figure 6 is a schematic diagram of an electric vehicle charging system according to another implementation method of the present disclosure. Figure 7 is a schematic diagram of a circuit of an electric vehicle charging system according to another implementation method of the present disclosure. FIG. 8 is a schematic diagram showing a circuit of an electric vehicle charging system according to one embodiment of the present disclosure.

100: Electric vehicle charging system

110: Charging equipment

112,114: Control device

122,124:Connection

132,134,136,138:Rechargeable gun

142,144,146,148: Switch device

CB1, CB2, CB3, CB4: Cables

E1: First end

E2: Second end

EV1,EV2,EV3,EV4:Electric Vehicles

Claims (16)

A charging system for an electric vehicle, comprising: a charging device, comprising a plurality of control devices, the control devices being independent of each other; a plurality of connectors, connected to the control devices, and each of the connectors being connected to each of the control devices; a plurality of charging guns, electrically and communicatively connected to one of the connectors, and each of the charging guns being configured to be controlled by the control devices to charge an electric vehicle; a plurality of cables, connected between one of the connectors and the charging guns, wherein each of the cables has a first end and a second end, one of the connectors being connected to the first end, and each of the charging guns being connected to the second end; and A plurality of switching devices are disposed on the cables and configured to perform at least one of the following: Detect whether the charging guns are connected to the plurality of electric vehicles; and Operate whether the charging guns are connected to the cables. An electric vehicle charging system as described in claim 1, wherein each of the charging guns is disposed on each of the switching devices. The electric vehicle charging system as described in claim 1 further includes a management device electrically or communicatively connected to the charging device, and the management device is configured to control the charging device to execute at least one of a plurality of charging strategies. An electric vehicle charging system as described in claim 1, wherein each of the control devices has a DC positive terminal, a DC negative terminal, a ground terminal, a communication terminal and a control terminal, each of the charging guns has a DC positive terminal, a DC negative terminal, a ground terminal and a communication terminal, and the DC positive terminal, the DC negative terminal, the ground terminal and the communication terminal of each of the control devices are respectively connected to the DC positive terminal, the DC negative terminal, the ground terminal and the communication terminal of each of the charging guns. An electric vehicle charging system as described in claim 1, wherein each of the control devices further includes a DC positive line, a DC negative line, a ground line, a communication line and a control line, wherein each of the switching devices further includes a first DC positive line, a first DC negative line, a first ground line, a first communication line and a control line respectively connected to the DC positive line, the DC negative line, the ground line, the communication line and the control line. An electric vehicle charging system as described in claim 5, wherein each of the switching devices further includes a second DC positive conductor, a second DC negative conductor, a second ground conductor and a second communication conductor, and the second DC positive conductor, the second DC negative conductor, the second ground conductor and the second communication conductor are respectively separated from the first DC positive conductor, the first DC negative conductor, the first ground conductor and the first communication conductor. An electric vehicle charging system as described in claim 6, wherein each of the switching devices further includes a first relay, a second relay, a third relay and a fourth relay, which are respectively arranged between the first DC positive conductor and the second DC positive conductor, between the first DC negative conductor and the second DC negative conductor, between the first ground conductor and the second ground conductor, and between the first communication conductor and the second communication conductor, wherein each of the switching devices includes a processing unit configured to control the opening and closing of the first relay, the second relay, the third relay and the fourth relay. An electric vehicle charging system as described in claim 6, wherein the second DC positive wire, the second DC negative wire, the second ground wire and the second communication wire are respectively connected to a DC positive terminal, a DC negative terminal, a ground terminal and a communication terminal of each of the charging guns. An electric vehicle charging system as described in claim 1, wherein each of the switching devices further comprises a first DC positive conductor, a first DC negative conductor, a first ground conductor, a first communication conductor and a control conductor respectively connected to a DC positive terminal, a DC negative terminal, a ground terminal, a communication terminal and a control terminal of one of the connectors. An electric vehicle charging system as described in claim 9, wherein each of the switching devices includes a processing unit, and an end of the control wire away from one of the connectors is connected to the processing unit. An electric vehicle charging system as described in claim 1, wherein each of the switching devices includes a processing unit configured to detect whether the charging guns are connected to the electric vehicles. The electric vehicle charging system as described in claim 1 further includes a selection device to accommodate the switching devices. An electric vehicle charging system as described in claim 1, wherein one of the charging interfaces of the charging guns is the same. An electric vehicle charging system as described in claim 1, wherein one of the charging interfaces of the charging guns is different. An electric vehicle charging system as described in claim 1, wherein each of the control devices allows one of the switching devices connected thereto to be turned on in a sequence to charge the electric vehicle. The electric vehicle charging system as described in claim 1 further includes a selection device connected to the charging guns for selection by a user of the electric vehicle, and the charging interfaces of the charging guns are different.

Images