Charging and discharging gun and charging device

Abstract

Provided in the present application are a charging and discharging gun and a charging device. The charging and discharging gun comprises: a housing, which has an inner cavity; a control circuit assembly, which comprises a circuit board body and a control and protection circuit arranged on a front side of the circuit board body, the control circuit assembly being arranged in the inner cavity; a pin assembly, which comprises a plurality of pins that are all connected to the control circuit assembly; and a cable, of which one end extends into the inner cavity and is connected to the control circuit assembly, and the other end is used for electrically connecting to a mains grid.

Description

Charging and discharging gun and charging equipment

[0001] The present application claims priority to the Chinese patent application No. 202421457038.7, filed on June 24, 2024 in the China Patent Office and entitled "Charging and discharging gun and charging equipment", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of new energy vehicles, more particularly to a charging and discharging gun and a charging equipment. BACKGROUND

[0003] New energy vehicles have different charging needs in different scenarios. In actual application, a suitable charging mode can be selected according to the self needs and charging conditions. TECHNICAL PROBLEM

[0004] However, the current charging system has high cost, large volume and complicated installation. TECHNICAL SOLUTION

[0005] To at least partially solve the above problems, the first aspect of the present application provides a charging and discharging gun, comprising:

[0006] a shell having an inner cavity;

[0007] a control circuit assembly comprising a circuit board body and a control and protection circuit arranged on the front surface of the circuit board body, the control circuit assembly being arranged in the inner cavity;

[0008] a pin assembly comprising a plurality of pins, the plurality of pins being respectively connected with the control circuit assembly;

[0009] a cable, one end of the cable extending into the inner cavity and being respectively connected with the control circuit assembly, the other end of the cable being used for electrical connection with a power grid.

[0010] According to the charging and discharging gun provided by the first aspect of the present application, the control and protection circuit of the charging pile is arranged in the limited space of the charging and discharging gun, realizing efficient integration of the functions of the charging pile and the charging gun, significantly optimizing the overall structure of the equipment, reducing the overall volume of the equipment and improving the integration of the equipment.

[0011] In an embodiment, the shell comprises a key, the control circuit assembly comprises a switching element, the switching element is arranged on the back surface of the circuit board body and located below the key, so that the key triggers the switching element when pressed.

[0012] In an embodiment, the charging and discharging gun further comprises a locking mechanism, the locking mechanism being integrally arranged with the key.

[0013] In an embodiment, the circuit board body comprises a first PCB board, and the cable is connected to the first PCB board.

[0014] In an embodiment, the first PCB board is provided with a pin socket, and the pin of the switch element is inserted into the pin socket.

[0015] In an embodiment, the circuit board body further comprises a second PCB board, which is oppositely arranged below the first PCB board and electrically connected to the first PCB board.

[0016] In an embodiment, the control and protection circuit comprises a control sub-circuit and a protection sub-circuit, the control sub-circuit is arranged on the first PCB board, and the protection sub-circuit is arranged on the second PCB board.

[0017] In an embodiment, the first PCB board or the second PCB board is provided with a clearance groove, and at least one of the pins passes through the clearance groove and is connected to the other PCB board by welding.

[0018] In an embodiment, the cable is connected to the PCB board connected to the plurality of pins or the control and protection circuit.

[0019] In an embodiment, the control and protection circuit comprises an electric control element, the electric control element comprises a common end, a normally open end and a normally closed end, the plurality of pins are respectively connected to the common end, the cable is arranged between the first PCB board and the second PCB board and is connected to the normally closed end, and the switch element is electrically connected to the normally open end.

[0020] In an embodiment, the pin socket comprises a first connecting part, a second connecting part and a third connecting part connected in sequence, the first connecting part and the third connecting part are oppositely arranged, the second connecting part is connected between the first connecting part and the third connecting part, and the second connecting part is used for connecting to the first PCB board.

[0021] The distance between the first connecting part and the third connecting part gradually increases from the middle part to the direction away from the second connecting part.

[0022] In an embodiment, the shell comprises a head part and a handle part, the head part and the handle part are sealingly connected, the pin assembly is arranged between the head part and the handle part and is fixedly connected to the shell by glue pouring, so that the head part, the handle part and the pin assembly form a closed inner cavity.

[0023] In an embodiment, the housing and / or the pin assembly is provided with at least one clamping groove along the direction of plugging of the plurality of pins into the vehicle socket, and the clamping groove is used to fix the circuit board body.

[0024] In an embodiment, when the clamping groove is multiple, the multiple clamping grooves are arranged side by side along the direction perpendicular to the direction of plugging.

[0025] In an embodiment, the pin assembly further comprises:

[0026] a pin plate formed with a plurality of fixing holes for fixing the plurality of pins;

[0027] a reinforcing part in plugging connection with the plurality of pins.

[0028] In an embodiment, the reinforcing part is configured as a hollow structure, and the pins are arranged in the reinforcing part; or,

[0029] the pins are configured as a hollow structure, and the reinforcing part is arranged in the pins.

[0030] In an embodiment, the pin plate and the reinforcing part are integrally formed.

[0031] In an embodiment, the pin assembly further comprises a boss part connected to the pin plate and surrounding the periphery of the fixing hole, and the plurality of pins are plugged into the boss part.

[0032] In an embodiment, the plurality of pins comprise at least one of CC pins, CP pins, L pins, PE pins and N pins.

[0033] The second aspect of the present application provides a charging device comprising the above charging and discharging gun. Advantages

[0034] The charging and discharging gun sets the control and protection circuit of the charging pile in a limited space, realizes the efficient integration of the charging pile and the charging gun function, significantly optimizes the overall structure of the device, reduces the overall volume of the device, and improves the integration of the device. BRIEF DESCRIPTION OF DRAWINGS

[0035] The following drawings of the embodiments of the present application are hereby incorporated into the present application as a part of the present application for understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0036] FIG. 1 is an appearance view of a charging and discharging gun according to an embodiment of the present application;

[0037] FIG. 2 is a schematic view of the internal structure of a charging and discharging gun according to an embodiment of the present application;

[0038] Fig. 3 is a perspective view of a pin socket according to an embodiment of the present application;

[0039] Fig. 4 is a cross-sectional view of a charge-discharge gun according to an embodiment of the present application;

[0040] Fig. 5 is an exploded perspective view of a charge-discharge gun according to an embodiment of the present application;

[0041] Fig. 6 is a schematic view of an internal structure of a charge-discharge gun according to an embodiment of the present application;

[0042] Fig. 7 is a perspective view of a pin assembly according to an embodiment of the present application;

[0043] Fig. 8 is an exploded perspective view of a pin assembly according to an embodiment of the present application;

[0044] Fig. 9 is a schematic view of an internal structure of a charge-discharge gun according to another embodiment of the present application;

[0045] Fig. 10 is a perspective view of a pin assembly according to another embodiment of the present application;

[0046] Fig. 11 is a perspective view of a pin plate, a reinforcing portion, and a boss portion according to another embodiment of the present application;

[0047] Fig. 12 is a perspective view of a pin according to another embodiment of the present application;

[0048] Fig. 13 is a schematic view of a connection between a head and a PCB according to another embodiment of the present application;

[0049] Fig. 14 is an appearance view of a charging device according to an embodiment of the present application;

[0050] Fig. 15 is an appearance view of a charging device according to another embodiment of the present application;

[0051] Fig. 16 is an appearance view of a combined V2L discharge outlet system of a charge-discharge gun according to the present application.

[0052] Explanation of reference signs 10, housing; 11, head; 111, protective cover; 112, sealing ring; 113, head clamping groove; 12, handle part; 121, key cover plate; 122, sealing element; 123, first accommodating hole; 124, second accommodating hole; 13, key; 101, inner cavity; 20, control circuit assembly; 21, first PCB board; 210, pin socket; 211, first connecting part; 212, second connecting part; 213, third connecting part; 214, avoiding groove; 22, second PCB board; 23, switch element; 30, pin assembly; 31, pin board; 311, fixing hole; 32, pin; 321, opening; 33, reinforcing part; 34, boss part; 40, cable; 50, locking mechanism; 1, charging and discharging gun; 2, pile body; 3, three-prong plug; 4, extension cord; D1, first direction.

[0053] Embodiments of the present application

[0054] The existing integrated charging gun integrates the cable control and protection device of mode two in the charging gun, can only support low-current charging, and cannot meet the demand of large-current (such as 16A or more) load; and the charging system of mode three including the charging pile has high cost, large size and complicated installation, therefore the present application provides a charging and discharging gun and a charging device, which can set the control and protection circuit of the charging pile in the limited space of the charging gun, realizes efficient integration of the functions of the charging pile and the charging gun, and improves the integration of the device. The following will be described in detail.

[0055] Referring to FIGS. 1-2, the present application provides a charging and discharging gun 1, comprising: a housing 10, a control circuit assembly 20, a pin assembly 30, and a cable 40.

[0056] Among them, the housing 10 has an inner cavity; the control circuit assembly 20 includes a circuit board body and a control and protection circuit arranged on the front surface of the circuit board body, and the control circuit assembly 20 is arranged in the inner cavity; the pin assembly 30 includes a plurality of pins 32, and the plurality of pins 32 are respectively connected with the control circuit assembly 20; one end of the cable 40 extends into the inner cavity and is respectively connected with the control circuit assembly 20, and the other end of the cable 40 is used for electrical connection with the power grid.

[0057] In the present application, the control circuit assembly 20 is not only used to realize the function of the original control guide circuit in the charging gun, but also can realize the related functions of the power supply equipment (charging pile) of mode three specified in the relevant national standards, control the entire charging process during charging, monitor various data in the charging process, and ensure the safety of the charging process. Integrating the function circuit of the charging pile in the charging and discharging gun 1 can save or reduce the size of the charging pile.

[0058] In one specific implementation, the control and protection circuit 20 includes functions such as charging protection, charging state detection, remote pre-booking charging, card swiping charging, etc., and specifically includes relays, transformers, mutual inductors, current detection integrated circuits, voltage detection integrated circuits, etc.

[0059] Since the main difference between Mode Two and Mode Three is that the output current of Mode Two is lower than that of Mode Three, the control and protection circuit 20 in the present application can also implement the related functions of Mode Two.

[0060] In the present application, the shell 10 can include one or more components, each of which can be integrally injection molded by a plastic part, which will not be elaborated here. When the shell 10 can include multiple components, the multiple components can be assembled together to form a sealed shell.

[0061] In the present application, the cable 40 is a power input cable for powering the charging and discharging gun. The cable 40 is composed of three wires, namely, a live wire (L), a null wire (N), and a protective earthing (PE).

[0062] In the present application, the pin assembly 30, the control circuit assembly 20, and the cable 40 are connected in sequence to form a current transmission link from the vehicle interface to the power grid. Among them, the pin assembly 30 is directly connected to the control circuit assembly 20, avoiding the setting of wires and other connecting parts, thereby saving the occupied space of the control circuit assembly 20 and the pin assembly 30, and further improving the utilization rate of the inner cavity space, so that the inner cavity can accommodate the control and protection circuit of the entire charging pile.

[0063] The charging and discharging gun 1 provided in the present application sets the control and protection circuit of the charging pile in a limited space, realizes efficient integration of the charging pile and the charging gun functions, significantly optimizes the overall structure of the equipment, reduces the overall volume of the equipment, and improves the integration of the equipment.

[0064] Please continue to refer to FIG. 1 and FIG. 2. In one specific implementation, the shell 10 includes a head portion 11 and a handle portion 12, the head portion 11 and the handle portion 12 are sealingly connected, the pin assembly 30 is arranged between the head portion 11 and the handle portion 12, and the pin assembly 30 is fixedly connected with the shell 10 by glue pouring, so as to form a sealed inner cavity 101 of the head portion 11, the handle portion 12, and the pin assembly 30.

[0065] The glue pouring fixed connection can ensure that the pin assembly 30 and the shell 10 are firmly combined, and at the same time, a sealing layer is formed between the pin assembly 30 and the shell 10, which can protect the internal circuit and electronic components from external force and external environment.

[0066] It can be understood that the interior of the head 11 and the interior of the handle 12 are hollow, the head 11 is used to be plugged with the charging port on the new energy vehicle, and the head 11 further constitutes an inner cavity together with the pin assembly 30 and the handle 12. The control circuit assembly 20 is installed to the inner cavity.

[0067] Exemplarily, the head 11 comprises a protective cover 111, which is movably connected to the head 11, so that when the charging and discharging gun 1 is not used, the protective cover 111 can be sleeved on the head 11 of the shell 10 to cover the charging and discharging gun 1 and realize protection and waterproof of the charging and discharging gun 1.

[0068] Please continue to refer to FIG. 2, in a specific implementation, the shell 10 can comprise a button 13, and the control circuit assembly 20 comprises a switch element (not shown in the figure), which is arranged on the back of the circuit board body and below the button 13, so that the button 13 is pressed to trigger the switch element.

[0069] It can be understood that the button 13 is movably installed on the charging and discharging gun shell 10, the switch element is arranged below the button 13 and in the movement path of the button 13, so that the switch element can be triggered by the button 13 and generate a feedback signal.

[0070] Exemplarily, the button 13 has a pin hole, which is connected to the charging and discharging gun shell 10 through a fixed shaft, so that the button 13 is movably installed on the charging and discharging gun shell 10.

[0071] By directly triggering the switch element by the button, the space inside the charging and discharging gun can be saved, the space utilization rate is improved, and the foundation is laid for setting the function circuit of the charging pile inside the charging and discharging gun.

[0072] According to an embodiment of the present application, the circuit board body comprises a first PCB board, and the cable is connected with the first PCB board.

[0073] When the circuit board body comprises the first PCB board, the plurality of pins are respectively connected with the first PCB board, and the switch element is arranged on the back of the first PCB board.

[0074] In a specific implementation, the first PCB board is provided with a pin socket, and the pin of the switch element is inserted into the pin socket.

[0075] By inserting the pin of the switch element into the pin socket instead of using a signal line, the space inside the charging and discharging gun can be saved, and the space utilization rate is improved.

[0076] Next, referring to FIG. 3, the pin socket according to an embodiment of the present application is described.

[0077] As shown in FIG. 3, in the embodiment, the pin socket 210 includes a first connecting portion 211, a second connecting portion 212 and a third connecting portion 213 connected in sequence, the first connecting portion 211 and the third connecting portion 213 are oppositely arranged, and the second connecting portion 212 is connected between the first connecting portion 211 and the third connecting portion 213 and is used to be connected to the first PCB; the distance between the first connecting portion 211 and the third connecting portion 213 gradually increases from the middle part to the direction away from the second connecting portion 212.

[0078] For example, the first connecting portion 211 and the third connecting portion 213 form a similar "X" type structure. Specifically, the end part of the first connecting portion 211 and the third connecting portion 213 away from the second connecting portion 212 is provided with an opening gradually expanding structure for accommodating the switch element, so that the switch element can be more easily and stably inserted and positioned. The distance between the middle part of the first connecting portion 211 and the middle part of the third connecting portion 213 is the smallest, so that when connected with the switch element, the contact can be maintained. The switch element can deform the first connecting portion 211 and the third connecting portion 213, so as to ensure that the first connecting portion 211 and the third connecting portion 213 respectively have good contact with the switch element, thereby providing a stable electrical connection effect.

[0079] According to one embodiment of the present application, the circuit board body further includes a second PCB, which is oppositely arranged below the first PCB and is electrically connected with the first PCB.

[0080] Since the switch element is arranged on the back surface of the first PCB, in the embodiment, the second PCB is oppositely arranged below the first PCB, which not only means that the second PCB is arranged parallel to the front surface of the first PCB, but also means that the front surface of the first PCB is opposite to the front surface of the first PCB. Therefore, the control and protection circuit is arranged in the space between the first PCB and the second PCB. The control and protection circuit is placed in the space between the first PCB and the second PCB, and the fine layout is performed in the limited space, so as to optimize the space layout inside the charging and discharging gun, maximize the use of limited space, and reduce the volume of the overall charging and discharging gun. While realizing integration, the normal operation of each function is ensured.

[0081] Specifically, when the circuit board body includes the first PCB and the second PCB, the plurality of pins on the pin assembly can be connected with only one PCB, which can be directly connected with the first PCB or the second PCB, and the present application does not make specific limitation thereon.

[0082] But need to explain, no matter which piece of PCB pin connected to the cable must be connected to the same piece of PCB pin, so as to simplify the circuit, reduce the signal transmission between two PCB.

[0083] By setting two pieces of PCB, the circuit board area can be effectively increased, so as to accommodate the control and protection circuit in the high-power charging and discharging gun, and improve the power of the charging and discharging gun.

[0084] Exemplarily, the control and protection circuit includes a control sub-circuit and a protection sub-circuit, the control sub-circuit is arranged on the first PCB, and the protection sub-circuit is arranged on the second PCB.

[0085] The charging and discharging gun according to an embodiment of the application is described below with reference to FIGS. 4 and 5.

[0086] As shown in FIGS. 4 and 5, the charging and discharging gun 1 of the embodiment includes a housing 10, a control circuit assembly 20, a pin assembly 30, a cable 40, and a locking mechanism 50.

[0087] The housing 10 includes a head portion 11 and a handle portion 12, the head portion 11 is sealingly connected to the handle portion 12, the pin assembly 30 is arranged between the head portion 11 and the handle portion 12, at least two buckles can be arranged on the inner side of the head portion 11, when the pin assembly 30 is loaded into the head portion 11, the buckles on the inner side of the head portion 11 will clamp the pin assembly 30, at this time, the pin assembly 30 is fixed in the head portion 11, and the head portion 11 and the pin assembly 30, the handle portion 12 form a sealed inner cavity 101, the control circuit assembly 20 is arranged in the inner cavity 101.

[0088] The housing 10 further includes a sealing member 122, a first accommodating hole 123 is formed on the housing 10, the sealing member 122 can cooperate with the first accommodating hole 123, so that the sealing member 122 is assembled and sealed with the housing 10 when it is installed on the housing 10; wherein a through hole is formed on the sealing member 122, the cable 40 passes through the through hole and extends into the housing 10 of the charging and discharging gun and is assembled and sealed with the sealing member 122.

[0089] The head portion 11 of the housing 10 includes a protective cover 111, which is movably connected to the head portion 11.

[0090] The handle portion 12 of the housing 10 includes a key cover plate 121, a second accommodating hole 124 is formed on the key cover plate 121, and the key 13 is arranged in the second accommodating hole 124.

[0091] The head portion 11 and the handle portion 12 can be sealingly connected by a sealing ring 112. Exemplarily, the sealing ring 112 in the present application can be specifically arranged as a rubber member or a silica gel member, so that the sealing ring 112 as a whole can be deformed under pressure and realize assembly sealing between the head portion 11 and the handle portion 12.

[0092] Specifically, the outer side of the rear end of the head 11 has a groove, and a sealing ring 112 is placed in the groove. When the head 11 is assembled into the handle 12 together with the sealing ring 112, the sealing ring will have a certain interference with the shell, thereby preventing water outside the gun from entering the gun.

[0093] The control circuit assembly 20 includes a switch element 23, and a first PCB board 21 and a second PCB board 22 spaced apart along the first direction D1, the first PCB board 21 being electrically connected to the second PCB board 22, the switch element 23 being disposed on the back of the first PCB board 21 and below the button 13. The first PCB board 21 is provided with a pin socket 210, and the pins of the switch element 23 are inserted into the pin socket 210.

[0094] By spacing apart the first PCB board 21 and the second PCB board 22, the spatial layout inside the charging and discharging gun 1 is optimized, making the entire charging and discharging gun 1 more compact in size, and facilitating carrying and use.

[0095] Exemplarily, the switch element 23 is a micro switch for controlling or starting a specific function, such as starting charging, stopping charging, etc. When the user presses the button and triggers the switch element 23, the internal mechanical structure will change, causing the moving contact and the fixed contact to make or break contact, thereby establishing or breaking the electrical connection through the pin socket 210 and the circuit on the first PCB board 21.

[0096] The locking mechanism 50 is integrally arranged with the button 13, and a pin hole is arranged between the locking mechanism 50 and the button 13, the pin hole being connected to the charging and discharging gun shell 10 through a fixed shaft, so that when the button 13 is pressed, the locking mechanism 50 can be lifted to achieve unlocking, at which time the charging and discharging gun 1 can be pulled out or inserted; when the button 13 is released, the locking mechanism 50 can fall down, at which time if the charging and discharging gun 1 has been inserted into the vehicle interface, locking can be achieved.

[0097] The pin assembly 30 includes a pin plate 31 and a plurality of pins 32, the plurality of pins 32 being respectively connected to the control circuit assembly 20; one end of the cable 40 extends into the inner cavity and is respectively connected to the control circuit assembly 20, and the other end of the cable 40 is used for electrical connection with the power grid.

[0098] The following describes the case where the plurality of pins 32 of the pin assembly 30 and the cable 40 are connected to the first PCB board 21 and the second PCB board 22, respectively.

[0099] Figure 6 is a schematic diagram of the internal structure of the charging and discharging gun according to one embodiment of the present application. As shown in Figure 6, the plurality of pins 32 of the pin assembly 30 are connected to the electric control elements of the control and protection circuit, and the cable 40 is arranged between the first PCB 21 and the second PCB 22 and connected to the electric control elements of the control and protection circuit.

[0100] Specifically, the electric control elements can be relays. The electric control elements include a common terminal, a normally open terminal and a normally closed terminal, the plurality of pins 32 are respectively connected to the common terminal, the cable 40 is connected to the normally closed terminal, and the switching elements are electrically connected to the normally open terminal. The connection mode here can be welding connection, which not only provides physical connection, but also ensures good electrical conduction between the pin assembly 30 and the PCB. The metal connection formed by the welding point can effectively transmit current and signals, ensuring the normal operation of the circuit.

[0101] Since transmitting the power signal through the PCB increases the size of the circuit board, in the present embodiment, the cable 40 and the plurality of pins 32 are connected to the electric control elements, thereby reducing the occupied space on the circuit board and improving the space utilization.

[0102] The pin assembly 30 further includes a pin plate 31, the pin plate 31 being formed with a plurality of fixing holes for fixing the plurality of pins 32;

[0103] a reinforcing portion 33, the reinforcing portion 33 being connected to the plurality of pins 32 in a plug-in manner.

[0104] The pin assembly 30 in the present embodiment will be described below in combination with Figures 7 and 8.

[0105] As shown in Figures 7 and 8, the pin assembly 30 includes the pin plate 31, the pins 32, the reinforcing portion 33 and the boss portion 34. The pin plate 31 is mounted to the inner cavity 101, and the pin plate 31 is formed with fixing holes 311. The fixing holes 311 pass through the pin plate 31.

[0106] The reinforcing portion 33 is configured as a hollow structure, and the pins 32 are arranged in the reinforcing portion 33. That is, the reinforcing portion 33 is sleeved on the pins 32, so that the strength of the pins 32 can be effectively improved. Exemplarily, the pins 32 and the reinforcing portion 33 pass through the fixing holes 311 together.

[0107] The pins 32 have low strength and may be deformed or broken when bearing a certain load. The pin plate 31 and the reinforcing portion 33 are combined with the pins 32 to improve the strength of the pins 32. Through the arrangement of the reinforcing portion 33, the pins 32 can maintain high strength and are less likely to be deformed or broken when bearing a load. The service life of the pins 32 is long, and the durability is high.

[0108] The fixing hole 311 extends from the middle of the pin plate 31 to the periphery of the pin plate 31. That is, the fixing hole 311 is a notch structure. The pin 32 can be mounted into the fixing hole 311 from the periphery of the pin plate 31, and the pin plate 31 can be easily mounted or removed.

[0109] Exemplarily, the processing mode of the pin 32 includes but is not limited to stamping process, turning process. The above-mentioned processing modes are suitable for mass production, can quickly and efficiently complete the processing of the pin 32, and can realize high-precision processing, reduce production cost and improve production efficiency. Exemplarily, the processing mode of the pin 32 is stamping process. The pin 32 produced by stamping process greatly improves the production efficiency compared with the pin 32 produced by turning process, and saves a large amount of raw material cost.

[0110] Exemplarily, the surface of the pin 32 is treated by nickel plating or silver plating process. The nickel plating or silver plating treatment can form a uniform metal film with good conductivity on the surface of the pin 32, so as to reduce the contact resistance of the surface of the pin 32 and increase the weldability. In addition, it can effectively prevent the surface of the pin 32 from being oxidized and corroded, and prolong the service life of the pin 32.

[0111] The boss part 34 is connected to the pin plate 31, and the boss part 34 is surrounded by the periphery of the fixing hole 311. The inner wall of the boss part 34 is connected with the inner wall of the fixing hole 311 to form a smooth wall surface. The pin 32 is inserted into the boss part 34. The boss part 34 surrounds the periphery of the fixing hole 311, which provides additional support and stability for the pin 32, so that the connection between the pin 32 and the pin plate 31 is more firm and reliable, reduces the risk of loosening or falling off, and also improves the mechanical strength of the pin assembly 30.

[0112] FIG. 9 is a schematic view of the internal structure of the charging and discharging gun according to another embodiment of the present application. As shown in FIG. 9, the PCB board 20 includes a first PCB board 21 and a second PCB board 22, and the plurality of pins 32 of the pin assembly 30 are connected to the second PCB board 22. The cable 40 is connected to one end of the second PCB board 22 away from the pin assembly 30. Specifically, the connection mode here can be welding connection.

[0113] When the pins 32 are all electrically connected to the second PCB board 22, due to the limited space of the inner cavity of the shell 10, the first PCB board 21 is provided with an avoiding slot 214. At least one pin 32 passes through the avoiding slot 214 and is connected to the second PCB board 22 by welding. The avoiding slot 214 is used for the pin 32 to pass through, so that the spatial layout of the circuit assembly 20 and the pin 32 can be balanced.

[0114] In the embodiment, the cable 40 and the plurality of pins 32 are connected to the second PCB board 22, thereby reducing the occupied space of the cable 40 and improving the space utilization.

[0115] The pin assembly 30 in the embodiment will be described in detail below in combination with FIGS. 10-12.

[0116] As shown in FIGS. 10 and 11, the pin assembly 30 includes a pin plate 31, pins 32, and a reinforcing portion 33, a boss portion 34.

[0117] The pin 32 is configured as a hollow structure, and the reinforcing portion 33 is arranged in the pin 32. The hollow pin 32 can reduce the overall weight, and the hollow pin 32 has lower strength than the solid pin 32. Although the pin 32 is a hollow structure, the reinforcing portion 33 can still maintain high strength, thereby reducing the overall weight of the plug while maintaining certain strength. The hollow pin 32 is less likely to deform or break when subjected to load, and the pin 32 has a long service life and high durability.

[0118] In the embodiment, the pin plate 31 and the reinforcing portion 33 are integrally formed. That is, the reinforcing portion 33 and the pin plate 31 jointly define a fixing hole 311. The fixing hole 311 is connected with the pin 32.

[0119] Exemplarily, the pin plate 31 and the reinforcing portion 33 are formed by in-mold injection of the pin 32. Specifically, the pin assembly 30 can be obtained after injection in a mold provided with the pin 32 and hardening and demolding.

[0120] In-mold injection forming is a production method with high efficiency, high precision, high production efficiency, and low cost. Through this method, the pin plate 31 and the reinforcing portion 33 can be integrally formed, and the pin plate 31, the reinforcing portion 33, and the pin 32 can be assembled at the same time of injection. The integrally formed pin assembly 30 has high overall strength and stability.

[0121] The fixing hole 311 includes a plurality of fixing holes 311 arranged at intervals on the base; the plurality of pins 32 correspond one-to-one to the plurality of fixing holes 311, the pin 32 is arranged in the corresponding fixing hole 311 and fixed to the base, and one end of the pin 32 extends out of one side surface of the base through the fixing hole 311.

[0122] Exemplarily, the part of the reinforcing portion 33 arranged in the fixing hole 311 is fixedly connected with the inner wall of the fixing hole 311.

[0123] Exemplarily, in a plane perpendicular to the first direction D1, the projection of the fixing hole 311 and the projection of the opening 321 at least partially coincide. That is, at the fixing hole 311, the reinforcing portion 33 can be exposed from the opening 321 and connected with the pin plate 31. The forming structure of the reinforcing portion 33 and the pin plate 31 is simple, and the connection is reliable.

[0124] In this embodiment, the boss portion 34 can be combined with the reinforcing portion 33, for example, the boss portion 34, the reinforcing portion 33 and the pin plate 31 are integrally formed; thereby the plastic wrapping length of the pin 32 can be increased to avoid insufficient bonding strength caused by too short plastic wrapping length of the pin 32.

[0125] The boss portion 34 is connected to the pin plate 31, and the boss portion 34 surrounds the periphery of the fixing hole 311, and the pin 32 is inserted into the boss portion 34. The boss portion 34 surrounds the periphery of the fixing hole 311, and provides additional support and stability for the pin 32, so that the connection between the pin 32 and the pin plate 31 is more firm and reliable, and the risk of loosening or falling off is reduced, and the mechanical strength of the pin assembly 30 is improved. For example, the boss portion 34 is connected to the first side and / or the second side of the pin plate 31. The boss portion 34 protrudes from the first side and / or the second side.

[0126] Fig. 12 is a perspective view of a pin according to another embodiment of the present application. As shown in Fig. 12, the pin 32 is provided with an opening 321 for exposing the reinforcing portion 33, and the exposed reinforcing portion 33 is fixedly connected to the pin plate 31. Thus, the reinforcing portion 33 and the pin plate 31 can be integrally formed. The structure of the pin assembly 30 provided by the present application is stable and is not prone to loosening or falling off, thereby improving the safety in use.

[0127] It should be noted that the above two different pin assemblies can be applied to the charging and discharging gun with the structure shown in Figs. 6 and 9, but the pins need to be connected to the same PCB board or switching device as the cable.

[0128] According to one embodiment of the present application, at least one clamping groove is formed in the housing and / or the pin assembly along the insertion direction of the plurality of pins and the vehicle socket, and the clamping groove is used to fix the circuit board body.

[0129] The housing can include a head portion and a handle portion. Thus, the clamping groove of the handle portion can cooperate with the clamping groove of the head portion / pin assembly to define the positional relationship between the charging and discharging gun control circuit assembly and the charging and discharging gun housing in the vertical direction and the horizontal direction.

[0130] Fig. 13 is a schematic view of the connection between the head portion and the PCB board according to one embodiment of the present application. As shown in Fig. 13, the PCB board includes a first PCB board 21 and a second PCB board 22, and the head portion 11 is provided with a plurality of clamping grooves 113 which are arranged side by side along a direction perpendicular to the insertion direction and have the same extension direction as the PCB board. Meanwhile, two groups of clamping grooves are arranged on the left and right sides of the head portion in the horizontal direction. The first PCB board 21 and the second PCB board 22 are connected to the clamping grooves 113. Through the arrangement of the clamping grooves 113, the first PCB board 21 and the second PCB board 22 can be firmly installed inside the housing 10, and the risk of loosening or falling off of the PCB board due to vibration or external force is reduced.

[0131] According to one embodiment of the present application, the plurality of pins comprises at least one of CC pin, CP pin, L pin, PE pin, and N pin.

[0132] It should be noted that the CP pin can not be used when the charging and discharging gun is used as a discharging gun only.

[0133] The present application also provides a charging device comprising the charging and discharging gun.

[0134] The integrated charging and discharging gun as a part of the charging device can provide a convenient charging experience for users.

[0135] The charging device according to one embodiment of the present application is described below with reference to FIG. 14.

[0136] As shown in FIG. 14, in the present embodiment, the charging device comprises the charging and discharging gun 1 and a pile body 2, the pile body 2 is used to be connected to an external structure, and the charging and discharging gun 1 is detachably connected to the pile body 2.

[0137] There is no electrical connection between the pile body 2 of the charging pile and the charging and discharging gun 1, the pile body 2 of the charging pile has a small volume, and the pile body 2 is fixed to a wall or a column by a fastener.

[0138] The cable 40 is an input cable, one end of the cable 40 is connected to a power network, and the other end is connected to the charging and discharging gun 1, so that the charging and discharging gun 1 can be directly electrically connected to the power network through the cable 40. At this time, the charging and discharging gun 1 can be charged in mode three, and the charging and discharging gun 1 serves as a charging gun.

[0139] The charging device according to another embodiment of the present application is described below with reference to FIG. 15.

[0140] As shown in FIG. 15, in the present embodiment, the charging device comprises the charging and discharging gun 1 and a three-pin plug 3. The cable 40 is an input cable, one end of the cable 40 is connected to the three-pin plug 3, and the other end is connected to the charging and discharging gun 1. The three-pin plug 3 is used to be connected to a household power grid, at this time, the charging and discharging gun 1 can be charged in mode two, and the charging and discharging gun 1 serves as a charging gun.

[0141] Exemplarily, the charging device can further comprise a power strip 4.

[0142] As shown in FIG. 16, one end of the three-pin plug 3 is connected to the cable 40, and the plug end can be connected to the power strip 4. The cable 40 is connected to the charging and discharging gun 1, and the cable 40 can serve as an output cable or an input cable. When the three-pin plug 3 is inserted into the power strip 4 and the power strip is connected to a user's electrical equipment, the charging and discharging gun 1 can discharge in a vehicle to load (V2L) mode; when the three-pin plug 3 is pulled out of the power strip 4 and connected to a household power grid, the charging and discharging gun 1 serves as a charging gun.

[0143] The charging device can support mode two, mode three and V2L mode, and low cost, miniaturization and integration of the charging device are achieved.

Claims

1. A charging / discharging gun, comprising: A housing (10) having an inner cavity (101); Control circuit assembly (20), the control circuit assembly includes a circuit board body and a control and protection circuit disposed on the front side of the circuit board body, the control circuit assembly is disposed in the inner cavity; A pin assembly (30), the pin assembly including a plurality of pins (32), the plurality of pins being respectively connected to the control circuit assembly; and A cable (40), one end of which extends into the inner cavity and is connected to the control circuit assembly, and the other end of which is used to connect to the mains power grid.

2. The charging / discharging gun according to claim 1, wherein, The housing includes a button (13), and the control circuit assembly includes a switch element (23). The switch element is disposed on the back of the circuit board body and located below the button so that the switch element is triggered when the button is pressed.

3. The charging / discharging gun according to claim 2, wherein, The charging / discharging gun (1) also includes a locking mechanism (50), which is integrated with the button.

4. The charging / discharging gun according to claim 2, wherein, The circuit board body includes a first PCB board (21), and the cable is connected to the first PCB board.

5. The charging / discharging gun according to claim 4, wherein, The first PCB board is provided with a pin socket (210), and the pins of the switching element are plugged into the pin socket.

6. The charging / discharging gun according to claim 4, wherein, The circuit board body also includes a second PCB board (22), which is disposed below the first PCB board and is electrically connected to the first PCB board.

7. The charging / discharging gun according to claim 6, wherein, The control and protection circuit includes a control sub-circuit and a protection sub-circuit, with the control sub-circuit disposed on the first PCB board and the protection sub-circuit disposed on the second PCB board.

8. The charging / discharging gun according to claim 6, wherein, The first PCB board or the second PCB board is provided with a clearance groove (214), and at least one of the pins passes through the clearance groove and is connected to the other PCB board by soldering.

9. The charging / discharging gun according to any one of claims 6 to 8, wherein, The cable is connected to the PCB board or the control and protection circuit that is connected to the plurality of pins.

10. The charging and discharging gun according to claim 9, wherein, The control and protection circuit includes an electronic control element, which includes a common terminal, a normally open terminal, and a normally closed terminal. The plurality of pins are respectively connected to the common terminal. The cable passes between the first PCB board and the second PCB board and is connected to the normally closed terminal. The switching element is electrically connected to the normally open terminal.

11. The charging and discharging gun according to claim 5, wherein, The pin socket includes a first connecting part (211), a second connecting part (212) and a third connecting part (213) connected in sequence. The first connecting part and the third connecting part are disposed opposite to each other. The second connecting part is connected between the first connecting part and the third connecting part. The second connecting part is used to connect to the first PCB board. The distance between the first connecting portion and the third connecting portion gradually increases from the middle towards the direction away from the second connecting portion.

12. The charging / discharging gun according to any one of claims 1 to 11, wherein, The outer shell includes a head (11) and a handle (12). The head and the handle are sealed together. The pin assembly is disposed between the head and the handle and is fixedly connected to the outer shell by potting, so that the head, the handle and the pin assembly form a sealed inner cavity.

13. The charging / discharging gun according to claim 2, wherein, The housing has at least one slot along the insertion direction of the plurality of pins and the vehicle socket, the slot being used to fix the circuit board body.

14. The charging / discharging gun according to claim 2, wherein, The pin assembly has at least one slot along the insertion direction of the plurality of pins and the vehicle socket, and the slot is used to fix the circuit board body.

15. The charging / discharging gun according to claim 13, wherein, When there are multiple card slots, the multiple card slots are arranged side by side along a direction perpendicular to the insertion direction.

16. The charging / discharging gun according to any one of claims 1 to 11, wherein, The pin assembly also includes: A pin plate (31) is formed with a plurality of fixing holes (311) for fixing the plurality of pins; The reinforcing part (33) is connected to the plurality of pins.

17. The charging / discharging gun according to claim 16, wherein, The reinforcing part is a hollow structure, and the pin passes through the reinforcing part; or... The pin has a hollow structure, and the reinforcing part is inserted inside the pin.

18. The charging and discharging gun according to claim 16, wherein, The pin plate and the reinforcing part are integrally formed.

19. The charging and discharging gun according to claim 16, wherein, The pin assembly further includes a boss (34) which is connected to the pin plate and surrounds the periphery of the fixing hole, and the plurality of pins are inserted into the boss.

20. The charge / discharge gun according to any one of claims 1 to 19, wherein, The plurality of pins includes at least one of CC pin, CP pin, L pin, PE pin, and N pin.

21. A charging device comprising a charging / discharging gun according to any one of claims 1 to 20.

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