Charger

Abstract

The utility model relates to the technical field of chargers, and provides a charger, which comprises a body, a first charging gun, a second charging gun and an alternating current circuit closer. The body is provided with a switching circuit, one end of the first charging gun is electrically connected with the switching circuit, and the other end is electrically connected with a vehicle end. One end of the second charging gun is electrically connected with the switching circuit, and the other end is electrically connected with the vehicle end; one end of the alternating current circuit closer is electrically connected with the switching circuit, the other end of the alternating current circuit closer is electrically connected with a power grid, and the switching circuit establishes a conductive path between at least two of the first charging gun, the second charging gun and the alternating current circuit closer. Thus, the communication mode among the first charging gun, the second charging gun and the alternating current circuit closer is changed through the switching circuit in the charger, so that the charger has multiple working modes, the multiple modes can be mutually converted, the use of the charger in different environments is met, the functions of the product are enriched, and the use experience of a user is optimized.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, and in particular to a charger. Background Technology

[0002] The relevant chargers only provide a working mode of drawing power from the grid to charge the vehicle. When the charger is charging the vehicle, it needs to draw power from the AC grid. However, since the time and scenario when the vehicle needs to be charged are not fixed, when the user encounters an emergency power shortage, the charger with a single working mode is difficult to meet the user's needs and is difficult to adapt to various scenarios. This causes great inconvenience to the user during the charging process. Utility Model Content

[0003] In view of this, the present invention provides a charger that offers multiple working modes.

[0004] To solve the above problems, the technical solution of this utility model is as follows:

[0005] A charger includes: a body having a switching circuit; a first charging gun disposed on the body, one end of the first charging gun being electrically connected to the switching circuit, and the other end of the first charging gun being electrically connected to a vehicle; a second charging gun disposed on the body, one end of the second charging gun being electrically connected to the switching circuit, and the other end of the second charging gun being electrically connected to a vehicle; and an AC connector disposed on the body, one end of the AC connector being electrically connected to the switching circuit, and the other end of the AC connector being electrically connected to the power grid; wherein the switching circuit is used to establish a conductive path between at least two of the first charging gun, the second charging gun, and the AC connector.

[0006] In some embodiments, the switching circuit includes: a DC sub-circuit electrically connected to the first charging gun and the second charging gun, the DC sub-circuit having a first node; an AC sub-circuit electrically connected to the AC connector and the first node; a first switch disposed in the DC sub-circuit and located on the side of the first node near the first charging gun; and a second switch disposed in the DC sub-circuit and located on the side of the first node near the second charging gun.

[0007] In some embodiments, the AC sub-circuit includes an AC line and a bidirectional AC / DC conversion module. The AC line is electrically connected to the AC connector and the first node. The bidirectional AC / DC conversion module is disposed on the AC line and is used to realize bidirectional conversion between AC power and DC power.

[0008] In some embodiments, the switching circuit further includes a bidirectional DC / DC converter module disposed in the DC sub-circuit, located between the first switch and the first node, the bidirectional DC / DC converter module being used to realize bidirectional conversion of DC power.

[0009] In some embodiments, the DC sub-circuit includes a second node and a third node, the second node being located between the first switch and the bidirectional DC / DC converter module, and the third node being located between the bidirectional DC / DC converter module and the first node; the switching circuit includes a branch and a third switch, the branch being electrically connected to the second node and the third node, and the third switch being disposed in the branch.

[0010] In some embodiments, the charger has an interconnection mode in which the switching circuit establishes a conductive path between the first charging gun and the second charging gun to charge and discharge between the two vehicle ends.

[0011] In some embodiments, the charger has a grid discharge mode in which the switching circuit establishes a conductive path between at least one of the first charging gun and the second charging gun, and the AC connector, so that the grid can charge at least one of the first charging gun and the second charging gun.

[0012] In some embodiments, the charger has a grid charging mode, in which the switching circuit establishes a conductive path between at least one of the first charging gun and the second charging gun, and the AC connector, so that at least one of the first charging gun and the second charging gun can charge the grid.

[0013] In some embodiments, the first charging gun is detachably connected to the body; and / or, the second charging gun is detachably connected to the body; and / or, the AC connector is detachably connected to the body.

[0014] In some embodiments, the charger is a portable structure.

[0015] In some embodiments, the charger includes a handle disposed on the body.

[0016] In some embodiments, the charger includes a controller for controlling the switching circuit.

[0017] This utility model provides a charger comprising a body, a first charging gun, a second charging gun, and an AC connector. The body has a switching circuit. The first charging gun is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to a vehicle. The second charging gun is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to the vehicle. The AC connector is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to the power grid. The switching circuit establishes a conductive path between at least two of the first charging gun, the second charging gun, and the AC connector. Thus, by changing the connection method between the first charging gun, the second charging gun, and the AC connector through the switching circuit in the charger, the charger can have multiple operating modes, and these modes can be switched between each other, meeting the needs of the charger in different environments, enriching the product's functionality, and optimizing the user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the charger provided in an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram of the switching circuit provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the connection between two vehicle ends and the charger in the interconnection mode provided by this utility model embodiment;

[0021] Figure 4 This is a schematic diagram of the structure of the first charging gun connected to the vehicle end according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the second charging gun connected to the vehicle end according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure connecting the two vehicle ends, the charger, and the power grid in an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Charger; 2. Vehicle end; 3. Power grid; 10. Main body; 11. First charging gun; 12. Second charging gun; 13. AC connector; 14. Switching circuit; 15. Handle; 16. Controller; 140. DC sub-circuit; 141. AC sub-circuit; 142. First switch; 143. Second switch; 144. Branch circuit; 145. Third switch; 1401. First node; 1402. Second node; 1403. Third node; 1404. Bidirectional DC / DC converter module; 1411. AC line; 1412. Bidirectional AC / DC converter module. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0028] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0029] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0030] like Figure 1As shown, this embodiment of the present invention provides a charger 1, including a body 10, a first charging gun 11, a second charging gun 12, and an AC connector 13. The body 10 has a switching circuit 14. The first charging gun 11 is disposed on the body 10, one end of the first charging gun 11 is electrically connected to the switching circuit 14, and the other end of the first charging gun 11 is used to connect to the vehicle end 2 (see...). Figure 3 Electrically connected, the second charging gun 12 is disposed on the main body 10, one end of the second charging gun 12 is electrically connected to the switching circuit 14, and the other end of the second charging gun 12 is used for electrical connection to the vehicle end 2. An AC connector 13 is disposed on the main body 10, one end of the AC connector 13 is electrically connected to the switching circuit 14, and the other end of the AC connector 13 is used for connection to the power grid 3 (see...). Figure 4 Electrical connection, switching circuit 14 is used to establish a conductive path between at least two of the first charging gun 11, the second charging gun 12 and the AC connector 13.

[0031] The type of vehicle-mounted device is not limited; for example, it includes, but is not limited to, electric vehicles, hybrid vehicles, or other vehicles. This application uses an electric vehicle as an example for illustration.

[0032] Understandably, charger 1 is typically used to charge electric vehicles. The main body 10 is equipped with a first charging gun 11, a second charging gun 12, and an AC connector 13. The first charging gun 11 and the second charging gun 12 are used to connect to the vehicle end 2. The first charging gun 11 and the second charging gun 12 can be connected to the vehicle end 2 individually or simultaneously. The AC connector 13 is used to connect to the power grid 3. The main body 10 of charger 1 also contains a switching circuit 14. The first charging gun 11, the second charging gun 12, and the AC connector 13 are electrically connected through the switching circuit 14. The current flow pattern in the switching circuit 14 can be switched, allowing the connection method among the first charging gun 11, the second charging gun 12, and the AC connector 13 to be changed.

[0033] The connection methods between the first charging gun 11, the second charging gun 12, and the AC connector 13 are at least the following: the first charging gun 11 or the second charging gun 12 is connected to the AC connector 13 alone, the first charging gun 11 and the second charging gun 12 are connected to the AC connector 13 at the same time, and the first charging gun 11 and the second charging gun 12 are connected to each other, so as to realize different working modes of the charger 1.

[0034] This utility model provides a charger comprising a body, a first charging gun, a second charging gun, and an AC connector. The body has a switching circuit. The first charging gun is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to a vehicle end 2. The second charging gun is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to the vehicle end 2. The AC connector is disposed on the body, with one end electrically connected to the switching circuit and the other end electrically connected to the power grid. The switching circuit establishes a conductive path between at least two of the first charging gun, the second charging gun, and the AC connector. Thus, by changing the connection method between the first charging gun, the second charging gun, and the AC connector through the switching circuit in the charger, the charger can have multiple operating modes, and these modes can be switched between each other, meeting the needs of the charger in different environments, enriching the product's functionality, and optimizing the user experience.

[0035] In some embodiments, such as Figure 1 and Figure 2 As shown, the switching circuit 14 includes a DC sub-circuit 140, an AC sub-circuit 141, a first switch 142, and a second switch 143. The DC sub-circuit 140 is electrically connected to the first charging gun 11 and the second charging gun 12, and has a first node 1401. The AC sub-circuit 141 is electrically connected to the AC connector 13 and the first node 1401. The first switch 142 is disposed in the DC sub-circuit 140 and is located on the side of the first node 1401 near the first charging gun 11. The second switch 143 is disposed in the DC sub-circuit 140 and is located on the side of the first node 1401 near the second charging gun 12.

[0036] Understandably, the two ends of the DC sub-circuit 140 are connected to the first charging gun 11 and the second charging gun 12, respectively. The DC sub-circuit 140 is equipped with a first switch 142 and a second switch 143. A first node 1401 is located between the first switch 142 and the second switch 143. One end of the AC sub-circuit 141 is connected to the first node 1401, and the other end is connected to the AC connector 13. In other words, the current in the AC sub-circuit 141 is split into two paths at the first node 1401: one path passes through the first switch 142, and the other path passes through the second switch 143.

[0037] When a user wants to connect the first charging gun 11 or the second charging gun 12 individually to the AC connector 13, this can be achieved by closing the first switch 142 or the second switch 143. When a user wants to connect the first charging gun 11 and the second charging gun 12 to the AC connector 13 simultaneously, this can be achieved by simultaneously closing the first switch 142 and the second switch 143. When a user wants to connect the first charging gun 11 and the second charging gun 12 to each other, the AC connector 13 needs to be disconnected from the external power grid 3, and the first switch 142 and the second switch 142 need to be closed simultaneously.

[0038] This embodiment of the utility model connects the first charging gun 11, the second charging gun 12, and the AC connector 13 to the switching circuit 4 by setting up a DC sub-line 140 and an AC sub-line 141, and uses a first switch 142 and a second switch 143 to switch the connection mode among the three, which simplifies the circuit structure, reduces the difficulty of operation, and facilitates the control of the working mode in the charger 1.

[0039] The type of the first switch 142 is not limited; for example, the first switch 142 may include, but is not limited to, a contactor.

[0040] The type of the second switch 143 is not limited; for example, the second switch 143 may include, but is not limited to, a contactor.

[0041] In some embodiments, such as Figure 1 and Figure 2 As shown, the AC sub-circuit 141 includes an AC line 1411 and a bidirectional AC / DC conversion module 1412. The AC line 1411 is electrically connected to the AC connector 13 and the first node 1401. The bidirectional AC / DC conversion module 1412 is disposed on the AC line 1411 and is used to realize bidirectional conversion between AC power and DC power.

[0042] Understandably, the two ends of AC line 1411 are connected to AC connector 13 and first node 1401, respectively. Since AC connector 13 is connected to power grid 3, current in power grid 3 can flow to first node 1401 through AC line 1411, and then flow from first node 1401 to vehicle end 2, which is connected to first charging gun 11 and second charging gun 12. However, the operating currents of power grid 3 and vehicle end 2 are not the same. Therefore, a bidirectional AC / DC converter module 1412 needs to be installed in AC line 1411 to regulate the current in power grid 3. When the current passes through the bidirectional AC / DC converter module 1412, AC and DC conversion can be achieved, so that the current entering vehicle end 2 matches the operating current of vehicle end 2, ensuring power balance during the use of charger 1.

[0043] This embodiment of the utility model sets up a bidirectional AC / DC conversion module 1412 in the AC line, so that the current passing through the bidirectional AC / DC conversion module 1412 can be converted between DC and AC, ensuring the power balance of the charger 1 during use, improving the power conversion rate, and ensuring the power safety of the vehicle end 2 during the connection with the charger, thus optimizing the user experience.

[0044] In some embodiments, such as Figure 2 As shown, the switching circuit 14 includes a bidirectional DC / DC converter module 1404, which is disposed in the DC sub-circuit 140 and located between the first switch 142 and the first node 1401. The bidirectional DC / DC converter module 1404 is used to realize bidirectional conversion of DC power.

[0045] Understandably, the DC sub-circuit 1404 is equipped with a bidirectional DC / DC converter module 1404. When the first charging gun 11 and the second charging gun 12 are connected to each other, the current between the first charging gun 11 and the second charging gun 12 will pass through the bidirectional DC / DC converter module 1404. At this time, the current between the two vehicle terminals 2 will be converted by the bidirectional DC / DC converter module 1404, so that the current between the first charging gun 11 and the second charging gun 12 can be balanced, and the current flow between the two different vehicle terminals 2 can be more stable.

[0046] Meanwhile, the bidirectional DC / DC converter module 1404 is set between the first switch 142 and the first node 1401. When the second charging gun 12 is connected to the AC connector 13, the second switch 143 is closed, and the current will directly enter the second charging gun 12 from the first node 1401 through the second switch 143, thereby avoiding energy loss caused by the current passing through the bidirectional DC / DC converter module 1404.

[0047] This embodiment of the utility model sets up a bidirectional DC / DC conversion module 1404 in the DC sub-circuit 140 to balance the current energy between the first charging gun 11 and the second charging gun 12, making the current flow between the two different vehicle terminals 2 more stable. At the same time, it simplifies the circuit structure when the second charging gun 12 is connected to the AC connector 13, reduces the energy loss of the charger during operation, and improves the working efficiency of the charger.

[0048] In some embodiments, such as Figure 1 and Figure 2As shown, the DC sub-circuit 140 includes a second node 1402 and a third node 1403. The second node 1402 is located between the first switch 12 and the bidirectional DC / DC converter module 1404, and the third node 1403 is located between the bidirectional DC / DC converter module 1404 and the first node 1401. The switching circuit 14 also includes a branch 144 and a third switch 145. The branch 144 is electrically connected to the second node 1402 and the third node 1403, and the third switch 145 is located in the branch 144.

[0049] Understandably, in the DC sub-circuit 140, the bidirectional DC / DC converter module 1404 has a second node 1402 and a third node 1403 at both ends. A branch 144 connects the second node 1402 and the third node 1403, and a third switch 145 is provided on the branch 144. When the third switch 145 is closed, the current in the DC sub-circuit 140 will flow through the branch 144 and will no longer pass through the bidirectional DC / DC converter module 1404. In other words, the third switch 145 is used to control whether the current energy in the DC sub-circuit 140 needs to be converted by the bidirectional DC / DC converter module 1404.

[0050] When the first charging gun 11 and the AC connector 13 are connected, the current between the first charging gun 11 and the AC connector 13 has already been converted by the bidirectional AC / DC conversion module 1412, and no longer needs to be converted by the bidirectional DC / DC conversion module 1404. At this time, the third switch 145 is closed, allowing the current to flow through the branch 144, thereby reducing the number of energy conversions and reducing energy loss.

[0051] The type of the third switch 145 is not limited; for example, the third switch 145 may include, but is not limited to, a contactor.

[0052] This embodiment of the utility model connects the two ends of the bidirectional DC / DC converter module 1404 to a branch 144, and sets a third switch 145 on the branch 144. The third switch 145 controls whether the current passes through the bidirectional DC / DC converter module 1404. The adjustment is made according to different working modes, thereby reducing the number of energy conversions, improving the energy conversion efficiency, and improving the performance of the charger 1.

[0053] Specifically, the charger 1 in this embodiment of the present invention has at least the following operating modes:

[0054] In some embodiments, such as Figure 3 As shown, the charger 1 has an interconnection mode. In the interconnection mode, the switching circuit 14 establishes a conductive path between the first charging gun 11 and the second charging gun 12 to charge and discharge between the two vehicle ends 2.

[0055] Understandably, in the interconnection mode, AC connector 13 does not need to be connected to the power grid 3. The first switch 142 and the second switch 143 in the switching circuit 4 are closed, connecting the first charging gun 11 and the second charging gun 12 to each other via the DC sub-circuit 140. At this time, the first charging gun 11 and the second charging gun 12 are respectively connected to the two vehicle terminals 2. Between the two vehicle terminals 2, a bidirectional DC / DC converter module 1404 (see...) is used. Figure 2 After conversion, they can charge and discharge each other. In the absence of a power grid 3, they can be connected through the charger 1 vehicle end 2 to charge and discharge each other.

[0056] This utility model embodiment enables the first charging gun 11 and the second charging gun 12 to communicate through an interconnection mode. The vehicle end 2 connected to the first charging gun 11 and the second charging gun 12 can charge and discharge each other, so as to realize charging of the vehicle end 2 in emergency situations, increase the scenarios in which the charger 1 can be used, bring convenience to users, and improve the user experience.

[0057] In some embodiments, such as Figure 4-6 As shown, the charger 1 has a grid discharge mode. In the grid discharge mode, the switching circuit 14 establishes a conductive path between at least one of the first charging gun 11 and the second charging gun 12 and the AC connector 13, so that the grid 3 can charge at least one of the first charging gun 11 and the second charging gun 12.

[0058] Understandably, in grid discharge mode, AC connector 13 is connected to grid 3, and the first charging gun 11 and / or the second charging gun 12 can be connected to AC connector 13. That is, as Figure 4 As shown, when the first charging gun 11 in the switching circuit 4 is connected to the AC connector 13, the first switch 142 and the third switch 145 are closed; Figure 5 As shown, when the second charging gun 12 is connected to the AC connector 13, the second switch 143 is closed; Figure 6 As shown, when the first charging gun 11 and the second charging gun 12 are simultaneously connected to the AC connector 13, the first switch 142, the second switch 143, and the third switch 145 are all closed. In the grid discharge mode, the current in the grid 3 is converted by the bidirectional AC / DC converter module 1412 and flows to the first charging gun 11 and / or the second charging gun 12, thereby realizing the charging of the vehicle end 2 by the grid 3.

[0059] The charger 1 in this embodiment of the present invention has a grid discharge mode, which discharges through the grid 3 to charge at least one vehicle terminal 2 connected to the charger 1, enabling multiple vehicle terminals 2 to be charged simultaneously, thereby improving the charging efficiency of the charger and enhancing the user experience.

[0060] In some embodiments, such as Figure 4-6 The charger 1 has a grid charging mode. In the grid charging mode, the switching circuit 14 establishes a conductive path between at least one of the first charging gun 11 and the second charging gun 12 and the AC connector 13, so that at least one of the first charging gun 11 and the second charging gun 12 can charge the grid 3.

[0061] Understandably, in grid charging mode, AC connector 13 is connected to grid 3, and the first charging gun 11 and / or the second charging gun 12 can be connected to AC connector 13. That is, as... Figure 4 As shown, when the first charging gun 11 in the switching circuit 4 is connected to the AC connector 13, the first switch 142 and the third switch 145 are closed; Figure 5 As shown, when the second charging gun 12 is connected to the AC connector 13, the second switch 143 is closed; Figure 6 As shown, when the first charging gun 11 and the second charging gun 12 are simultaneously connected to the AC connector 13, the first switch 142, the second switch 143, and the third switch 145 are all closed. In grid charging mode, the current in the vehicle end 2 is converted by the bidirectional AC / DC converter module 1412 and flows to the grid 3 connected to the AC connector 13, thereby enabling the vehicle end 2 to discharge to the grid 3.

[0062] The charger 1 in this embodiment of the present invention has a grid charging mode. When the grid 3 is overloaded, the vehicle end 2 discharges to the grid 3 to relieve the pressure on the grid 3. This can achieve energy saving and environmental protection, and is conducive to promoting sustainable development.

[0063] In some embodiments, such as Figure 1 As shown, the first charging gun 11 is detachably connected to the main body 10; and / or, the second charging gun 12 is detachably connected to the main body 10; and / or, the AC connector 13 is detachably connected to the main body 10. In other words, the first charging gun 11, the second charging gun 12, and the AC connector 13 on the charger 1 can all be detachably connected to the main body 10, allowing users to install and remove them according to their needs.

[0064] This utility model implements the first charging gun 11, the second charging gun 12 and the AC connector 13 on the charger 1 as detachable connections, so that users can adjust them according to their own needs, improve the flexibility of product use, make the charger 1 applicable to more scenarios, and bring convenience to users.

[0065] In some embodiments, such as Figure 1As shown, charger 1 is a portable structure. A portable structure refers to a structure that can be moved and is easy to carry. For example, the mass of charger 1 may not exceed 20 kg.

[0066] The charger 1 includes a handle 15, which is located on the main body 10. Understandably, by designing the charger 1 as a portable structure, users can place it in a location such as the trunk of a car when they are out and about, making it convenient for them to use at any time and avoiding the problem of the vehicle-side 2 running out of power and being unable to charge. Furthermore, the handle 15 can be provided on the main body 10, allowing users to easily pick up, place, and move the charger 1, facilitating operation.

[0067] In some embodiments, such as Figure 1 As shown, the charger 1 includes a controller 16, which controls the switching circuit 14. Understandably, the main body 10 also includes a controller 16 connected to the switching circuit 14. The controller 16 can control at least the first switch 142, the second switch 143, and the third switch 145 to open and close. The user can adjust the connection mode of the switching circuit 14 by operating the controller 16.

[0068] This embodiment of the invention incorporates a controller 16 within the main body 10. The controller 16 provides unified control over the switches in the switching circuit 14. Users can switch the operating modes of the charger 10 simply by operating the controller 16, improving the integration of the charger 1's internal circuitry, simplifying operation, and facilitating control. As an example, the controller 16 can communicate with the vehicle to obtain its charging parameters, adjust the bidirectional DC / DC converter module and / or the bidirectional AC / DC converter module according to different operating modes, and control the opening and closing of the first switch 142, the second switch 143, and the third switch 145.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A charger, characterized in that, The charger includes: The main body has a switching circuit; A first charging gun is disposed on the main body. One end of the first charging gun is electrically connected to the switching circuit, and the other end of the first charging gun is used to be electrically connected to the vehicle end. A second charging gun is disposed on the main body. One end of the second charging gun is electrically connected to the switching circuit, and the other end of the second charging gun is used to be electrically connected to the vehicle end. An AC connector is disposed on the main body, one end of which is electrically connected to the switching circuit, and the other end of which is used for electrical connection to the power grid. The switching circuit is used to establish a conductive path between at least two of the first charging gun, the second charging gun, and the AC connector.

2. The charger according to claim 1, characterized in that, The switching circuit includes: A DC sub-circuit is electrically connected to the first charging gun and the second charging gun, and the DC sub-circuit has a first node; An AC sub-circuit is electrically connected to the AC connector and the first node; The first switch is disposed in the DC sub-circuit and located on the side of the first node near the first charging gun; The second switch is disposed in the DC sub-circuit and located on the side of the first node near the second charging gun.

3. The charger according to claim 2, characterized in that, The AC sub-circuit includes an AC line and a bidirectional AC / DC conversion module. The AC line is electrically connected to the AC connector and the first node. The bidirectional AC / DC conversion module is disposed on the AC line and is used to realize bidirectional conversion between AC power and DC power.

4. The charger according to claim 2, characterized in that, The switching circuit further includes: A bidirectional DC / DC converter module is disposed in the DC sub-circuit, located between the first switch and the first node, and the bidirectional DC / DC converter module is used to realize bidirectional conversion of DC power.

5. The charger according to claim 4, characterized in that, The DC sub-circuit includes a second node and a third node, the second node being located between the first switch and the bidirectional DC / DC converter module, and the third node being located between the bidirectional DC / DC converter module and the first node; The switching circuit includes a branch and a third switch. The branch is electrically connected to the second node and the third node, and the third switch is located in the branch.

6. The charger according to claim 1, characterized in that, The charger has an interconnection mode, in which the switching circuit establishes a conductive path between the first charging gun and the second charging gun to charge and discharge between the two vehicle ends.

7. The charger according to claim 1, characterized in that, The charger has a grid discharge mode. In the grid discharge mode, the switching circuit establishes a conductive path between at least one of the first charging gun and the second charging gun, and the AC connector, so that the grid can charge at least one of the first charging gun and the second charging gun.

8. The charger according to claim 1, characterized in that, The charger has a grid charging mode. In the grid charging mode, the switching circuit establishes a conductive path between at least one of the first charging gun and the second charging gun, and the AC connector, so that at least one of the first charging gun and the second charging gun can charge the grid.

9. The charger according to any one of claims 1 to 8, characterized in that, The first charging gun is detachably connected to the main body; and / or, The second charging gun is detachably connected to the main body; and / or, The AC connector is detachably connected to the main body.

10. The charger according to any one of claims 1 to 8, characterized in that, The charger is portable.

11. The charger according to claim 10, characterized in that, The charger includes a handle, which is disposed on the body.

12. The charger according to any one of claims 1 to 8, characterized in that, The charger includes a controller for controlling the switching circuit.

Images