阅读说明：本技术 一种可逆变的便携式直流充电系统 (Reversible portable direct current charging system ) 是由 陈敏旋 秦李伟 许可 姜点双 于 2021-09-30 设计创作，主要内容包括：本发明提供一种可逆变的便携式直流充电系统,包括：控制盒、充电枪、插接头、16A三插头和10A插排。所述控制盒设置有充电枪插接口和充放电连接口,所述充电枪通过所述充电枪插接口与所述控制盒可拆卸地插接,所述插接头的一端通过所述充放电连接口与所述控制盒可拆卸地插接,所述插接头的另一端与所述16A三插头或所述10A插排可拆卸地连接。所述控制盒内设置AC/DC转换器和DC/AC逆变器,所述AC/DC转换器用于对外部220V交流电转换成直流电,所述DC/AC逆变器用于将车辆电池包的直流电转换为交流电,以对外供电。本发明能解决现有电动汽车充电存在不便捷的问题,能提高电动汽车充电的便捷性,增加充电的灵活性。(The invention provides an invertible portable direct current charging system, comprising: control box, rifle that charges, bayonet joint, 16A three plugs and 10A row of inserting. The control box is provided with a charging gun interface and a charging and discharging connector, the charging gun is detachably connected with the control box through the charging gun interface, one end of the plug-in connector is detachably connected with the control box through the charging and discharging connector, and the other end of the plug-in connector is detachably connected with the 16A three-plug or the 10A socket. An AC/DC converter and a DC/AC inverter are arranged in the control box, the AC/DC converter is used for converting external 220V alternating current into direct current, and the DC/AC inverter is used for converting the direct current of the vehicle battery pack into alternating current so as to supply power to the outside. The invention can solve the problem of inconvenience in charging of the conventional electric automobile, improve the convenience in charging of the electric automobile and increase the flexibility in charging.)

1. A portable dc charging system that is reversible, comprising: the charging gun comprises a control box, a charging gun, a plug connector, a 16A three-plug and a 10A power strip;

the control box is provided with a charging gun insertion port and a charging and discharging connection port, the charging gun is detachably inserted into the control box through the charging gun insertion port, one end of the plug-in connector is detachably inserted into the control box through the charging and discharging connection port, and the other end of the plug-in connector is detachably connected with the 16A three-plug or the 10A power strip;

an AC/DC converter and a DC/AC inverter are arranged in the control box, the AC/DC converter is used for converting external 220V alternating current into direct current, and the DC/AC inverter is used for converting the direct current of the vehicle battery pack into alternating current so as to supply power to the outside.

2. The invertible portable dc charging system according to claim 1, wherein the control box is provided with a switch button for controlling charging and discharging of the control box.

3. The portable reversible direct-current charging system according to claim 2, wherein a detection controller is disposed in the control box, and the detection controller is configured to detect a level signal at a set detection point and send a charge/discharge signal to the vehicle controller when the level at the set detection point is equal to a set voltage threshold.

4. The invertible portable dc charging system according to claim 3, wherein the control box is provided with a first relay and a second relay;

the input end of the first relay is respectively connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the first relay is connected with the positive output end of the charging gun socket of the control box, and the control end of the first relay is connected with the first output end of the detection controller;

the input end of the second relay is connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the second relay is connected with the negative output end of the charging gun socket of the control box, and the control end of the second relay is connected with the second output end of the detection controller;

the detection controller controls the first relay and the second relay to be switched on or off according to the level signal of the set detection point, so that the electric connection between the vehicle battery pack and the AC/DC converter and the DC/AC inverter is switched on or off.

5. The invertible portable direct current charging system according to claim 4, wherein a low-voltage auxiliary power supply is arranged in the control box, and the low-voltage auxiliary power supply is electrically connected with the detection controller and the charging gun socket respectively;

and after the charging gun is plugged with the control box and the vehicle charging interface, the low-voltage auxiliary power supply is electrically connected with a storage battery of the vehicle.

6. The invertible portable dc charging system according to claim 5, further comprising: a third relay and a fourth relay;

the input end of the third relay is connected with the positive output end of the vehicle storage battery, the output end of the third relay is connected with the A + output end of the vehicle charging interface, and the control end of the third relay is connected with the first output end of the vehicle controller;

the input end of the fourth relay is connected with the negative electrode output end of the storage battery, the output end of the fourth relay is connected with the A-output end of the vehicle charging interface, and the control end of the third relay is connected with the second output end of the vehicle controller;

when the charging gun is connected with a vehicle charging interface in an inserting mode, the storage battery supplies power to the detection controller through the charging gun, and therefore the detection controller operates.

7. The portable, reversible direct current charging system according to claim 6, further comprising: a fifth relay and a sixth relay;

the input end of the fifth relay is connected with the positive output end of the battery pack, the output end of the fifth relay is connected with the DC + output end of the vehicle charging interface, and the control end of the fifth relay is connected with the third output end of the vehicle controller;

the input end of the sixth relay is connected with the negative electrode output end of the battery pack, the output end of the sixth relay is connected with the DC-output end of the vehicle charging interface, and the control end of the sixth relay is connected with the fourth output end of the vehicle controller.

8. The invertible portable dc charging system according to claim 7, wherein the control box is provided with a seventh relay and an eighth relay;

the seventh relay is arranged at the positive output end of the low-voltage auxiliary power supply, and the eighth relay is arranged at the negative output end of the low-voltage auxiliary power supply;

the detection controller is in signal connection with control ends of the seventh relay and the eighth relay, the charging gun is connected with a vehicle charging interface in an inserting mode, and after the storage battery supplies power to the detection controller, the detection controller controls the seventh relay and the eighth relay to be closed, so that a low-voltage auxiliary power supply loop in the control box is conducted.

9. The invertible portable direct current charging system according to claim 8, wherein the control box is provided with a charging indicator light, and the charging indicator light is turned on when the control box is connected with an external power supply and electrically connected with a vehicle direct current charging interface.

Technical Field

The invention relates to the technical field of electric vehicle charging and discharging equipment, in particular to a reversible portable direct-current charging system.

Background

Currently, the automobile industry is accelerating to intelligent electrification transition, and new energy automobiles, particularly electric automobiles, are moving to thousands of households. An electric vehicle (abbreviated as "taxi network contract electric vehicle") oriented to the taxi network contract field is gradually becoming an important component of the electric vehicle. Such electric vehicles for which a network is leased are required to be charged quickly because of their operational needs. But current fixed electric pile that fills quantity is limited, often causes the charging difficulty, influences the operation efficiency. Therefore, how to carry out portable charging to the electric motor car to can realize charging fast through the commercial power has important research meaning.

Disclosure of Invention

The invention provides an invertible portable direct current charging system, which solves the problem that charging of an existing electric automobile is not convenient and fast due to the fact that a fixed charging pile can only be used for charging, and can improve the charging convenience of the electric automobile and increase the charging flexibility.

In order to achieve the above purpose, the invention provides the following technical scheme:

a portable dc charging system that is reversible, comprising: the charging gun comprises a control box, a charging gun, a plug connector, a 16A three-plug and a 10A power strip;

the control box is provided with a charging gun insertion port and a charging and discharging connection port, the charging gun is detachably inserted into the control box through the charging gun insertion port, one end of the plug-in connector is detachably inserted into the control box through the charging and discharging connection port, and the other end of the plug-in connector is detachably connected with the 16A three-plug or the 10A power strip;

an AC/DC converter and a DC/AC inverter are arranged in the control box, the AC/DC converter is used for converting external 220V alternating current into direct current, and the DC/AC inverter is used for converting the direct current of the vehicle battery pack into alternating current so as to supply power to the outside.

Preferably, the control box is provided with a switch key, and the switch key is used for controlling charging and discharging of the control box.

Preferably, a detection controller is arranged in the control box, and the detection controller is used for detecting a level signal of a set detection point and sending a charge-discharge signal when the level of the set detection point is equal to a set voltage threshold.

Preferably, the control box is provided with a first relay and a second relay;

the input end of the first relay is respectively connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the first relay is connected with the positive output end of the charging gun socket of the control box, and the control end of the first relay is connected with the first output end of the detection controller;

the input end of the second relay is connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the second relay is connected with the negative output end of the charging gun socket of the control box, and the control end of the second relay is connected with the second output end of the detection controller;

the detection controller controls the first relay and the second relay to be switched on or off according to the level signal of the set detection point, so that the electric connection between the vehicle battery pack and the AC/DC converter and the DC/AC inverter is switched on or off.

Preferably, a low-voltage auxiliary power supply is arranged in the control box and is respectively and electrically connected with the detection controller and the charging gun socket;

and after the charging gun is plugged with the control box and the vehicle charging interface, the low-voltage auxiliary power supply is electrically connected with a storage battery of the vehicle.

Preferably, the method further comprises the following steps: a third relay and a fourth relay;

the input end of the third relay is connected with the positive output end of the vehicle storage battery, the output end of the third relay is connected with the A + output end of the vehicle charging interface, and the control end of the third relay is connected with the first output end of the vehicle controller;

the input end of the fourth relay is connected with the negative electrode output end of the storage battery, the output end of the fourth relay is connected with the A-output end of the vehicle charging interface, and the control end of the third relay is connected with the second output end of the vehicle controller;

when the charging gun is connected with a vehicle charging interface in an inserting mode, the storage battery supplies power to the detection controller through the charging gun, and therefore the detection controller operates.

Preferably, the method further comprises the following steps: a fifth relay and a sixth relay;

the input end of the fifth relay is connected with the positive output end of the battery pack, the output end of the fifth relay is connected with the DC + output end of the vehicle charging interface, and the control end of the fifth relay is connected with the third output end of the vehicle controller;

the input end of the sixth relay is connected with the negative electrode output end of the battery pack, the output end of the sixth relay is connected with the DC-output end of the vehicle charging interface, and the control end of the sixth relay is connected with the fourth output end of the vehicle controller.

Preferably, the control box is provided with a seventh relay and an eighth relay;

the seventh relay is arranged at the positive output end of the low-voltage auxiliary power supply, and the eighth relay is arranged at the negative output end of the low-voltage auxiliary power supply;

the detection controller is in signal connection with control ends of the seventh relay and the eighth relay, the charging gun is connected with a vehicle charging interface in an inserting mode, and after the storage battery supplies power to the detection controller, the detection controller controls the seventh relay and the eighth relay to be closed, so that a low-voltage auxiliary power supply loop in the control box is conducted.

Preferably, the control box is provided with a charging indicator lamp, and when the control box is communicated with an external power supply and is electrically connected with the vehicle direct-current charging interface, the charging indicator lamp is turned on.

The invention provides an invertible portable direct-current charging system, wherein an AC/DC converter and a DC/AC inverter are arranged in a control box and are connected with a vehicle charging interface through a charging gun, the control box is also provided with a charging and discharging connector, and the charging and discharging connection is carried out through a 16A three-plug or a 10A socket, so that the problem that the charging of the conventional electric vehicle is not convenient and fast due to the fact that only a fixed charging pile is used is solved, the charging convenience of the electric vehicle can be improved, and the charging flexibility is increased.

Drawings

In order to more clearly describe the specific embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below.

Fig. 1 is a schematic diagram of a reversible portable dc charging system according to the present invention.

Fig. 2 is a circuit diagram of a reversible portable dc charging system according to the present invention.

Detailed Description

In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.

Adopt fixed charging stake to fill soon to current electric motor car charges, have the inconvenient problem of charging. The invention provides an invertible portable direct-current charging system, wherein an AC/DC converter and a DC/AC inverter are arranged in a control box and are connected with a vehicle charging interface through a charging gun, the control box is also provided with a charging and discharging connector, and the charging and discharging connection is carried out through a 16A three-plug or a 10A socket, so that the problem that the charging of the conventional electric vehicle is not convenient and fast due to the fact that only a fixed charging pile is used is solved, the charging convenience of the electric vehicle can be improved, and the charging flexibility is increased.

As shown in fig. 1 and 2, a portable dc charging system that can be reversibly changed includes: control box 1, charging gun 2, connector 3, 16A three-plug 4 and 10A socket 5. The control box 1 is provided with a charging gun insertion port and a charging and discharging connection port, the charging gun 2 is detachably inserted into the control box through the charging gun insertion port, one end of the plug-in connector 3 is detachably inserted into the control box through the charging and discharging connection port, and the other end of the plug-in connector 3 is detachably connected with the 16A three-plug 4 or the 10A power strip 5. An AC/DC converter and a DC/AC inverter are arranged in the control box, the AC/DC converter is used for converting external 220V alternating current into direct current, and the DC/AC inverter is used for converting the direct current of the vehicle battery pack into alternating current so as to supply power to the outside.

In practical application, as shown in fig. 1, one end of the direct current charging gun is a direct current charging gun matched with the direct current charging socket, the middle part of the direct current charging gun is a control box with power of 2.8kw (the inversion power is 2.5kw), and the other end of the direct current charging gun is a swing wire with a diameter of 3 × 2.5mm²The three-plug socket comprises a national standard 16A three-plug or a national standard 10A socket and 1 integral cable with the length of 3 multiplied by 2.5mm2+2 x 1.5mm2+7 x 0.75mm2, wherein the national standard 16A three-plug and the national standard 10A socket are detachable and assembled and are assembled according to requirements. An AC/DC converter and a DC/AC inverter are arranged in the control box, and when the vehicle is charged, external 220V alternating current is converted into direct current through the AC/DC converter, and a battery pack of the vehicle is charged through a charging gun which is plugged in the control box. When discharging, the battery pack is electrically connected with a DC/AC inverter in the control box through the charging gun, and the DC output by the battery pack is converted into AC through the DC/AC inverter so as to supply power. The system can improve the charging convenience of the electric automobile and increase the charging flexibility.

As shown in fig. 2, the control box is provided with a switch button S2, and the switch button S2 is used for controlling charging and discharging of the control box.

Further, a detection controller is arranged in the control box and used for detecting a level signal of a set detection point and sending a charge-discharge signal when the level of the set detection point is equal to a set voltage threshold value.

As shown in fig. 2, the control box is provided with a first relay K1 and a second relay K2. The input end of the first relay K1 is respectively connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the first relay K1 is connected with the positive output end of the charging gun socket of the control box, and the control end of the first relay K1 is connected with the first output end of the detection controller. The input end of the second relay K2 is connected with the positive output ends of the AC/DC converter and the DC/AC inverter, the output end of the second relay K2 is connected with the negative output end of the charging gun socket of the control box, and the control end of the second relay K2 is connected with the second output end of the detection controller. The detection controller controls the first relay K1 and the second relay K2 to be turned on or off according to the level signal of the set detection point to turn on or off the electrical connection of the vehicle battery pack with the AC/DC converter and the DC/AC inverter.

Furthermore, a low-voltage auxiliary power supply is arranged in the control box and is respectively electrically connected with the detection controller and the charging gun socket. And after the charging gun is plugged with the control box and the vehicle charging interface, the low-voltage auxiliary power supply is electrically connected with a storage battery of the vehicle.

As shown in fig. 2, the system further includes: a third relay K3 and a fourth relay K4. The input end of the third relay K3 is connected with the positive output end of the vehicle storage battery, the output end of the third relay K3 is connected with the A + output end of the vehicle charging interface, and the control end of the third relay K3 is connected with the first output end of the vehicle controller. The input end of the fourth relay K4 is connected with the negative output end of the storage battery, the output end of the fourth relay K4 is connected with the A-output end of the vehicle charging interface, and the control end of the third relay K3 is connected with the second output end of the vehicle controller. When the charging gun is connected with a vehicle charging interface in an inserting mode, the storage battery supplies power to the detection controller through the charging gun, and therefore the detection controller operates.

As shown in fig. 2, the system further includes: a fifth relay K5 and a sixth relay K6. The input end of the fifth relay K5 is connected with the positive output end of the battery pack, the output end of the fifth relay K5 is connected with the DC + output end of the vehicle charging interface, and the control end of the fifth relay K5 is connected with the third output end of the vehicle controller. The input end of the sixth relay K6 is connected with the negative electrode output end of the battery pack, the output end of the sixth relay K6 is connected with the DC-output end of the vehicle charging interface, and the control end of the sixth relay K6 is connected with the fourth output end of the vehicle controller.

As shown in fig. 2, the control box is provided with a seventh relay K7 and an eighth relay K8. The seventh relay K7 is arranged at the positive output end of the low-voltage auxiliary power supply, and the eighth relay K8 is arranged at the negative output end of the low-voltage auxiliary power supply. The detection controller is in signal connection with the control ends of the seventh relay K7 and the eighth relay K8, the charging gun is connected with a vehicle charging interface in an inserting mode, the storage battery supplies power to the detection controller, and then the detection controller controls the seventh relay K7 and the eighth relay K8 to be closed, so that a low-voltage auxiliary power supply loop in the control box is conducted.

In practical application, as shown in fig. 2, when a customer needs to charge a 220V household power supply, a connector end of a international 16A three-plug connector of a 3 × 2.5mm swing wire 2 is plugged into a connector end of a control box, the international 16A three-plug end of the other end is connected to the household power supply, a button (S1 switch) of a direct-current charging gun head is pressed and inserted into a direct-current charging socket of a power supply vehicle, the button (S1 switch) of the gun head is released, a vehicle controller of the power supply vehicle detects that the voltage at a detection point 1 is 4V, the charging box judges that the direct-current charging gun is successfully inserted, a vehicle interface is completely connected, and an electronic lock of the direct-current charging gun is locked. And after the vehicle interfaces are completely connected, closing K7 and K8 to enable the low-voltage auxiliary power supply loop to be conducted, closing K1 and K2 to perform insulation detection, and after the insulation detection is completed, closing K5 and K6 by the vehicle controller to enable the charging loop to be conducted, wherein the whole vehicle is in a charging state. When a customer needs to discharge to the outside, the connector end of a wire throwing 3X 2.5mm2 national standard 10A socket is oppositely inserted with the connector end of a control box, a direct current charging gun head button (S1 switch) is pressed and inserted into a direct current charging socket of a power supply vehicle, the gun head button (S1 switch) is released, then a switch button (S2 switch) on the charging box is pressed, at the moment, a vehicle controller of the power supply vehicle detects that the voltage of a detection point 2 is 6V, K3 and K4 are closed, a charging box detection control device is activated, a detection control device of the charging box detects that the voltage of a detection point 1 is 3V, the charging box judges that the direct current charging gun is successfully inserted, a vehicle interface is completely connected, and an electronic lock of the direct current charging gun is locked. After the vehicle interfaces are completely connected, K7 and K8 are closed to enable the low-voltage auxiliary power supply loop to be conducted, K1 and K2 are closed to conduct insulation detection, and after the insulation detection is completed, the vehicle controller closes K5 and K6 to enable the high-voltage loop to be conducted, so that the whole vehicle is in a state of waiting for external discharge.

Further, be provided with the pilot lamp that charges on the control box when control box intercommunication external power source is connected with the vehicle direct current interface electricity that charges, the pilot lamp that charges lights.

The invention provides an invertible portable direct-current charging system, wherein an AC/DC converter and a DC/AC inverter are arranged in a control box and are connected with a vehicle charging interface through a charging gun, the control box is also provided with a charging and discharging connector, and the charging and discharging connection is carried out through a 16A three-plug or a 10A socket, so that the problem that the charging of the conventional electric vehicle is not convenient and fast due to the fact that only a fixed charging pile can be used is solved, the charging convenience of the electric vehicle can be improved, and the charging flexibility is improved.

The construction, features and functions of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings, and all equivalent embodiments modified or modified by the spirit and scope of the present invention should be protected without departing from the spirit of the present invention.