Automobile charging and discharging equipment

Abstract

The utility model discloses an automobile charging and discharging device, which is used for connecting a vehicle with an external power supply or an electric appliance for charging or discharging, and comprises a charging and discharging adapter and a patch cord which are used as independent structures, and the charging and discharging adapter is internally provided with an internal circuit which is used for connecting a vehicle end to carry out charging and discharging identification detection and electric conduction; the charging and discharging adapter is provided with a gun head connected with a vehicle end, a charging and discharging adapter coupling head and an integrated discharging socket connected with an external electric appliance, and the gun head is conductively connected with the charging and discharging adapter coupling head and the integrated discharging socket through an internal circuit; and the patch cord is provided with a patch cord coupling head connected with the charge and discharge adapter coupling head and a patch cord plug connected with an external power supply and the integrated discharge socket.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy automobile charging and discharging, and specifically relates to an automobile charging and discharging device. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new vehicle power devices), integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. The existing concept of new energy vehicles can be generally considered to convert various forms of energy into electrical energy, drive the motor through its own batteries to drive the vehicle, and at the same time, large-capacity batteries can provide a certain voltage of power to the outside. Many new energy vehicles can not only supply power to the outside, but can also be charged separately and used as pure electric vehicles. The difference lies in the pure electric driving mileage corresponding to the battery capacity.

[0003] For most existing new energy vehicles, in order to meet the needs of pure electric form, charging equipment will be provided separately, so that users can use it as a pure electric vehicle only by charging when it is inconvenient to use other forms of energy. This kind of new energy vehicle with charging and discharging function has a common interface for both charging and discharging, that is, the same vehicle socket can be used for charging and discharging, but in the prior art, charging and discharging are two sets of equipment, which need to be used separately when in use. In particular, existing manufacturers are usually only equipped with charging equipment, and the discharging equipment needs to be purchased by the user. Placing two sets of equipment separately in the car increases its space occupancy and increases the user's usage cost.

[0004] There is a solution in the prior art to solve the inconvenience of carrying two sets of equipment, that is, using one cable, by setting a detachable connection structure, different modules, that is, plugs or sockets can be connected, so as to achieve the problem that the same cable can discharge and charge. However, since the vehicle charging cable adopts a detachable structure, not only the connection stability problem must be considered, but also the electrical connection stability and electricity safety considerations must be achieved. The cost of setting it separately is high, and the replacement itself also requires carrying different connectors to achieve different functions, so it does not completely solve the above problem. There is also a solution in the prior art that uses the same connector but has two replaceable cables. This solution is also expensive and requires more equipment to be carried, which is inconvenient to use. And when using this detachable charging and discharging device, it is necessary to switch between charging mode and discharging mode. In the prior art, it is generally defaulted to discharge mode, and the control device switches the mode after real-time detection. This method requires real-time detection by the control module. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides an automobile charging and discharging device, which aims to integrate an integrated discharge socket through an optimized charging and discharging adapter structure. After being inserted into the vehicle, it can independently complete the detection interaction and discharge to the outside, and at the same time, it can also realize the corresponding charging process in conjunction with a number of detachable accessories.

[0006] The technical solution adopted by the utility model is:

[0007] In a first aspect, the utility model provides an automobile charging and discharging device for connecting a vehicle to an external power source or an electrical appliance for charging or discharging, including a charging and discharging adapter and a transfer line as independent structures, wherein the charging and discharging adapter is provided with an internal circuit for connecting to a vehicle end for charging and discharging identification detection and conduction;

[0008] The charging and discharging adapter has a gun head connected to the vehicle end, a charging and discharging adapter coupling head and an integrated discharge socket connected to an external electrical appliance, and the gun head is conductively connected to the charging and discharging adapter coupling head and the integrated discharge socket through an internal circuit;

[0009] The adapter cable has an adapter cable coupling head connected to a charging and discharging adapter coupling head, and also has an adapter cable plug connected to an external power source and an integrated discharge socket.

[0010] In combination with the first aspect, the utility model provides a first implementation manner of the first aspect, wherein the internal circuit includes a transmission circuit and a charge and discharge detection circuit, the charge and discharge detection circuit has a switching module that switches the charge detection circuit and the discharge detection circuit and initially maintains the connection with the discharge detection circuit, and the adapter has a linkage module that causes the switching module to switch to the charge detection circuit after the charge and discharge adapter is connected.

[0011] In combination with the first implementation of the first aspect, the utility model provides a second implementation of the first aspect, wherein the charge and discharge detection circuit has a first control module, the first control module has an identity identification port arranged on the coupling head of the charge and discharge adapter for docking with the adapter cable, and the adapter cable is provided with a transfer detection circuit connected to the identity identification port to form a loop.

[0012] In combination with the second implementation of the first aspect, the utility model provides a third implementation of the first aspect, wherein the transfer detection circuit is a loop with a first identification resistor, and the first control module is connected to the transfer detection circuit to form a complete loop in which the first control module outputs electrical energy for detection; or

[0013] The transfer detection circuit includes two conductive ends arranged on the transfer cable coupling head and the transfer cable plug. When the transfer cable is connected to the charge and discharge adapter and the external power supply, the transfer detection circuit and the first control module form a complete loop for detecting the electrical energy output by the external power supply.

[0014] It should be noted that the first identification resistor only indicates that the switching detection circuit is an identification circuit containing a specific resistance value. As for the structure providing the resistance value, it is not limited to a fixed single number of resistors. As long as the materials and structures can provide the corresponding rated resistance value, they are within the protection scope of the present utility model.

[0015] The so-called loop means that the transfer detection circuit in the adapter is only connected to the charge and discharge adapter to form a complete loop, and is not electrically connected to other structures. In the second implementation scheme, the transfer detection circuit is actually a wire at one end, which is ultimately used to connect to an external power source. However, because the external power source is strong electricity, its conductive end is not necessarily a conductive structure set outside the adapter plug. It can be directly connected to a strong power line inside the adapter to achieve the power connection function.

[0016] In combination with the first implementation of the first aspect, the utility model provides a fourth implementation of the first aspect, wherein the adapter cable coupling head is provided with a trigger mechanism linked to the switching module.

[0017] The so-called linkage means that when the adapter is not connected, the switching module of the charge-discharge adapter always keeps the circuit in the charge-discharge adapter in the discharge detection circuit. When the charge-discharge adapter is connected to the vehicle, it can match the vehicle to complete the discharge detection process and discharge through the integrated discharge socket. Once the adapter is connected, the switching module will immediately switch to the charging detection circuit, and then cooperate with the vehicle to carry out the charging detection process. This process is achieved by the trigger mechanism, and the linkage methods include various mechanical transmission methods, signal transmission, magnetic transmission and other methods.

[0018] In combination with the fourth implementation of the first aspect, the utility model provides a fifth implementation of the first aspect, wherein the charge and discharge detection circuit has a first control module, the first control module has an identity identification port arranged on the coupling head of the charge and discharge adapter for docking with the adapter cable, and the adapter cable is provided with a transfer detection circuit connected to the identity identification port to form a loop.

[0019] The transfer detection circuit of this part is mainly used to cooperate with the charging and discharging adapter to perform the connection identification process of the coupling head, rather than a trigger circuit for the switching module to switch the circuit. That is, there is a trigger mechanism for cooperating with the switching module to form a rigid linkage relationship, and the transfer detection circuit is used as a second protection mechanism. After switching the charging detection circuit, the first control module must also identify and confirm the transfer detection circuit. It should be noted that the transfer detection circuit in this scheme generally adopts a loop design with a first identification resistor, and does not adopt a scheme of forming a loop by connecting to an external power supply.

[0020] In combination with the first aspect or several embodiments of the first aspect, the utility model provides a sixth embodiment of the first aspect, which also includes an independent socket, wherein the independent socket has several sockets for connecting external electrical appliances and a socket coupling head for connecting a switching line coupling head.

[0021] In combination with the sixth implementation of the first aspect, the utility model provides a seventh implementation of the first aspect, further comprising a cable reel, on which the adapter cable is wound and stored, and the cable reel is also provided with a placement slot for placing an independent socket and / or a charging and discharging adapter.

[0022] In a second aspect, the utility model also provides a control method, using one of the above-mentioned automobile charging and discharging devices;

[0023] First, keep the switching module in the charge-discharge adapter always switched to the discharge detection circuit. When the charge-discharge adapter is only connected to the vehicle end, the charge-discharge adapter cooperates with the vehicle end to complete the discharge detection process and then supplies power to the external electrical appliance through the integrated discharge socket.

[0024] When the first control module outputs electric energy for detection, the operation is as follows:

[0025] When the charge-discharge adapter is connected to the adapter cable coupling head through the charge-discharge adapter coupling head while remaining connected to the vehicle, the first control module sends an electrical signal to the adapter cable, which is confirmed by the first identification resistor and the adapter cable plug is connected to the external power supply, and the control switching module switches to the charging detection circuit to complete the charging detection process, and then the vehicle is charged;

[0026] When the external power supply outputs electrical energy for detection, the operation is as follows:

[0027] When the charge and discharge adapter is connected to the vehicle through the charge and discharge adapter coupling head and the adapter cable coupling head, and the adapter cable plug is connected to the external power supply, the first control module obtains the current entering the external power supply and controls the switching module to switch to the charging detection circuit to perform the charging detection process, and the charging process is performed after the charging detection process is completed.

[0028] In a third aspect, a control method is provided, using one of the above-mentioned automobile charging and discharging devices;

[0029] First, keep the switching module in the charge-discharge adapter always switched to the discharge detection circuit. When the charge-discharge adapter is only connected to the vehicle end, the charge-discharge adapter cooperates with the vehicle end to complete the discharge detection process and then supplies power to the external electrical appliance through the integrated discharge socket.

[0030] When the charging and discharging adapter coupling head is connected to the adapter cable coupling head, the trigger mechanism is linked with the switching module, causing the switching module to switch to the charging detection circuit. When the adapter cable plug is connected to the external power supply, the charging detection process is completed and the vehicle end is charged by the external power supply.

[0031] The beneficial effects of the utility model are:

[0032] (1) The utility model optimizes the structure of the charge-discharge adapter and integrates an integrated discharge socket, which can be directly connected to the vehicle to complete the discharge detection process and directly discharge, and can be inserted into an external expansion socket to achieve extended power consumption. A special coupling head interface is additionally provided on the charge-discharge adapter to facilitate the connection of other connection devices, such as an adapter cable, so that after the adapter cable is connected, an external power source can be connected to charge the vehicle, so that the same device can perform multi-functional charging and discharging;

[0033] (2) The utility model sets a corresponding identification detection circuit structure, so that the single charge and discharge adapter can be directly discharged after being inserted into the vehicle end. At the same time, no matter under what conditions the adapter is inserted, it can switch to the charging detection process, and automatically complete the charging detection process to charge after the vehicle and the external socket (external power supply) are connected at the same time;

[0034] (3) The utility model provides an independent socket with a coupling head, which can be used in conjunction with an adapter cable to form a separate extension socket, and can be plugged into an integrated discharge socket or an external socket, thereby cooperating with the adapter cable to provide more application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a plan view of the charging and discharging adapter structure in the embodiment of the utility model;

[0036] Figure 2 It is a schematic diagram of the first circuit principle inside the charging and discharging adapter in the embodiment of the utility model;

[0037] Figure 3 It is a schematic diagram of the second circuit principle inside the charging and discharging adapter in the embodiment of the utility model;

[0038] Figure 4It is a schematic diagram of the third circuit principle inside the charging and discharging adapter in the embodiment of the utility model;

[0039] Figure 5 It is a schematic diagram of the internal circuit principle of the independent socket in the embodiment of the utility model;

[0040] Figure 6 It is a schematic diagram of the first internal circuit principle of the adapter cable in the embodiment of the utility model;

[0041] Figure 7 It is a schematic diagram of the second internal circuit principle of the adapter cable in the embodiment of the utility model;

[0042] Figure 8 It is a schematic diagram of the internal circuit principle of the adapter in the embodiment of the utility model;

[0043] Fig. 9 It is a schematic diagram of the charging process of the charging and discharging device connected to an external power supply in the embodiment of the utility model;

[0044] Fig.10 It is a schematic diagram of the discharge process of the charging and discharging device through an independent socket in the embodiment of the utility model;

[0045] Fig.11 It is a schematic diagram of the charging and discharging device in the embodiment of the utility model connecting an external power supply to an independent socket to perform a discharging process.

[0046] In the figure: 1-gun body, 2-gun head, 3-charge and discharge adapter coupling head, 4-integrated discharge socket, 5-winding rack, 6-adapter coupling head, 7-adapter plug, 8-adapter, 9-socket coupling head, 10-independent socket. DETAILED DESCRIPTION

[0047] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] Embodiment 1:

[0055] This embodiment discloses an automobile charging and discharging device, which has a plurality of combined parts and realizes automatic conversion of charging and discharging on the vehicle side through a set of combined equipment.

[0056] Reference Figure 1 The figure shows the planar structure of the charge and discharge adapter, which is the main component of the charge and discharge equipment. The appearance of the charge and discharge adapter adopts the existing charge and discharge adapter structure design. Its main body is a gun body structure, and the gun head is on the left side of the gun body, which is used to connect the charging and discharging sockets on the vehicle end.

[0057] A handle is provided at the lower part of the gun body, and a charging and discharging adapter coupling head is provided along the end of the handle. This structure is an independent connection structure with a battery cell inside, which can adopt several specifications of medium-sized electrical connections on the market, such as ordinary neutral wire, live wire, and ground wire battery cell connectors.

[0058] The right end of the gun body forms a cylindrical structure, and its end face is provided with a three-hole integrated discharge socket, through which an external electrical appliance is connected. Figure 1 The middle right side shows the end face structure of the integrated discharge socket that cannot be viewed in the side view in the form of a virtual image. In this embodiment, a 16A three-pin socket is used for illustration, but it is not limited to the 16A specification, nor is it limited to a single three-hole socket structure. Two-pin, USB connector, etc. can be provided as needed.

[0059] There is a circuit structure inside the gun body, where the circuit structure is divided according to function or strong and weak electricity type, and is mainly divided into two types, namely: transmission circuit and charge and discharge detection circuit.

[0060] The transmission circuit is used as a strong power line for three connectors, namely the gun head, the integrated discharge socket and the charge and discharge adapter coupling head. The gun head is connected to the socket at the vehicle end, and the integrated discharge socket is connected to the gun head through the transmission circuit, and the charge and discharge adapter coupling head is also connected to the gun head through the transmission circuit.

[0061] It should be noted that there are many ways to implement the circuit structure set in the gun body, namely a physical line structure based on cables, and the other is a printed circuit structure based on integrated circuit boards. The integrated circuit board method can facilitate the setting of a single-chip microcomputer for simple programming control, and the installation difficulty is relatively small.

[0062] The charging and discharging equipment also includes additional components, namely adapter cables, independent sockets, conversion heads and cord reels.

[0063] Among them, the adapter cable is a separate cable structure design, which includes two main ends, one is the adapter cable coupling head, and the other is the adapter cable plug. Among them, the adapter cable coupling head is used to adapt to the charging and discharging adapter coupling head, wherein a symmetrically arranged connector structure can be adopted, or a common male and female head structure design can be adopted. This embodiment is not limited to the fixed setting of the male and female heads, and it is only necessary to ensure that it can achieve a dedicated corresponding connection relationship. The adapter cable plug is a common type of electrical appliance plug, generally a three-plug design, which can be directly plugged into an external socket to achieve electrical connection. It should be noted that the adapter cable plug in this embodiment is a 16A specification, but is not limited to the three-plug specification of 16A, and can include other specifications such as 10A and 32A.

[0064] Reference Figure 6, the figure shows the structural features of the independent socket. The independent socket has a plurality of sockets corresponding to the external electrical appliances, and a socket coupling head corresponding to the adapter cable coupling head. In this embodiment, the male and female types of the coupling heads on each structure are not limited. In the general setting mode, the socket coupling head of the independent socket and the charging and discharging adapter coupling head are of the same type, and the adapter cable coupling head can be inserted into both the socket coupling head and the charging and discharging adapter coupling head.

[0065] Reference Fig.10 It can be seen that during the discharge process, when the charge and discharge adapter is inserted into the vehicle end, the integrated discharge socket is discharged. In order to extend and increase the socket, the connection is achieved by inserting the adapter plug into the integrated discharge socket, and the adapter coupling head is inserted into the socket coupling head of the independent socket, thereby realizing the discharge connection relationship from the charge and discharge adapter to the independent socket.

[0066] Reference Fig.11 The figure shows another way of using the independent socket and the adapter cable, that is, after the adapter cable is connected to the independent socket, it can be independently used as a conventional extension cord strip structure to power multiple external electrical appliances by connecting to an external power supply.

[0067] Among them, refer to Fig. 9 and Fig.11 In the figure, an adapter is shown separately, which is used to connect to the adapter plug to achieve the effect of specification conversion. That is, the default adapter plug in this embodiment is a 16A three-pin specification, which is converted to a smaller 10A three-pin specification through the adapter, and can be adapted to an external 10A socket, and can also meet charging needs.

[0068] Reference Figure 9-11 The figure also shows a schematic diagram of a winding frame, which is a disc-shaped structure, and the adapter cable can be wound on the winding frame. The adapter cable can be released and stored by rotating the winding frame, so as to achieve the storage and release of longer adapter cables. At the same time, a placement slot is set in the middle of the winding frame to store independent sockets. At the same time, another placement slot can be set on the end face of the other side (not shown) for placing the charging and discharging adapter.

[0069] Furthermore, the circuit design and control principle of the entire charging and discharging equipment are optimized.

[0070] As an embodiment, referring to Figure 2 , the figure shows a schematic diagram of the circuit arranged in the space inside the gun body.

[0071] In this embodiment, a circuit structure based on a first control module is provided in the gun body, wherein the first control module is MCU1 in the figure. There are five wiring harnesses entering the gun head, including the conventional neutral wire, live wire and ground wire as the transmission circuit, that is, the strong power line. There is only a transmission circuit on the integrated discharge socket, that is, after the front-end circuit interacts with the vehicle end to complete the discharge detection process, the vehicle end directly supplies power to the integrated discharge socket through the transmission circuit.

[0072] At the charging and discharging adapter coupling head at the bottom of the gun body, the transmission line is also used as the main line to connect to the external adapter line and carry out the charging process on the vehicle side.

[0073] The charge and discharge detection circuit arranged in the gun body, namely Figure 2 The part on the left side of MCU1 is the same as the detection circuit of the existing charge and discharge gun, and uses two selection circuits with different identification resistance values ​​to switch to realize the charge and discharge detection process. Among them, the switching module is the S5 switch in the figure, and the S5 switch is controlled and switched by MCU1. Under the default setting, the charge and discharge adapter is always connected to the discharge detection circuit, that is, when the charge and discharge adapter is only connected to the vehicle end, the discharge detection process with the vehicle end is completed through the discharge detection circuit to discharge. Figure 2 The circuit in the circuit has two switches K1 and K2 that control the opening and closing of the transmission circuit. The K1 switch is used to control the strong electrical connection between the gun head and the charging and discharging adapter coupling head, and the K2 switch controls the strong electrical connection between the gun head and the integrated discharge socket. Both switches are normally open by default, and are closed only after the corresponding charging and discharging detection process is completed by MCU1.

[0074] In this embodiment, for connection identification of the adapter cable, an additional identification port, namely Q1 in the figure, is provided at the charging and discharging adapter coupling head for detection and identification of the adapter cable. Figure 6 Except for the part shown in the box, an independent transfer detection circuit corresponding to Q1 is set in the adapter coupling head, that is, a loop including an identification resistor. The current enters from Q1 and then transfers out from PE to form a complete loop.

[0075] When the adapter coupling head is connected to the charging and discharging adapter coupling head, if the charging and discharging adapter is not connected to the vehicle end or the discharge detection process is completed, and the adapter is not connected to the external power supply, the charging and discharging adapter still maintains the default discharge detection process. Once the charging and discharging adapter is connected to the vehicle end, the vehicle end will complete the first step of interaction through the front discharge detection circuit (that is, identify the corresponding discharge identification resistor), and then discharge from the vehicle end to the front end of K2. At this time, MCU1 is powered on for self-test. Since MCU1 is powered, it will simultaneously realize detection and identification through the Q1 line and the adapter. At this time, it keeps synchronization with the discharge detection self-test process of MCU1, that is, the discharge detection process will not be completed. After MCU1 recognizes that the adapter is connected, it will cut off the K2 switch. The vehicle end is in the process of completing the discharge detection process but the current is not connected to the integrated discharge socket. At this time, since the external power supply is not plugged in, the S5 switch cannot be switched to perform the charging detection process until the external power supply is plugged in and the charging detection process is completed for charging.

[0076] When the charge-discharge adapter has completed the discharge detection process to discharge before connecting the adapter cable, and then connected the adapter cable without connecting the external power supply, MCU1 can complete the identification and detection of the adapter cable through Q1, and immediately disconnect the connection with the integrated discharge socket through the K2 switch, but at this time the S5 switch always remains on the discharge detection circuit. At this time, MCU1 controls the K2 switch to disconnect, thereby maintaining a standby state. On a charge-discharge adapter with a display screen, the corresponding connection state can be viewed through the display screen, which indicates a standby state without connecting the external power supply. In this embodiment, the entire charging detection process cannot be completed by connecting the adapter cable, the charge-discharge adapter and the vehicle end without connecting the external power supply. Only after the external power supply is connected, the charging detection process is completed and charging is performed when the preconditions are met.

[0077] In summary, in this embodiment, a switching detection circuit with an identification resistor is provided in the switching cable and the Q1 detection end of the MCU1 in the charge-discharge adapter, thereby completing the automatic conversion between the discharge detection process and the charge detection process.

[0078] In order to further improve the safety performance, refer to the above implementation scheme for further optimization. Figure 3 As a new implementation method, two linkage mechanisms are provided on the charging and discharging adapter coupling head and the adapter cable coupling head, and the linkage mechanism provided on the charging and discharging adapter coupling head realizes a direct linkage relationship with the S5 switch. When the adapter cable is connected to the charging and discharging adapter, the control switching of the S5 switch is directly realized through the cooperation of the two linkage mechanisms, and the S5 switch is directly switched when connected, thereby changing the mode of controlling the switching of the S5 switch after detection by the MCU1, and improving safety.

[0079] Reference Figure 3and Figure 5 A K4 switch is set in the charge and discharge adapter, and a K5 switch is set in the transfer line. Both switches are set on the live wire of the high-voltage line as a safety guarantee to avoid adhesion between conductive structures.

[0080] Reference Figure 7 , another function is provided for the K5 switch in this embodiment. The K5 switch is arranged on the transmission circuit of the adapter cable, near the adapter cable coupling head. An independent trigger structure is also arranged between the adapter cable coupling head and the charge-discharge adapter coupling head. Only when the adapter cable coupling head is connected to the charge-discharge adapter coupling head and maintains a stable connection state, the trigger structure is triggered to close the K5 switch in the normally open state, thereby realizing the conduction between the external power supply and the charge-discharge adapter. In this implementation, the K5 switch serves as a safety mechanism to ensure that when the adapter cable is connected to the external power supply alone, the adapter cable coupling head is not energized, and can be turned on only when the adapter cable coupling head is connected to the charge-discharge adapter coupling head through the closure of the K5 switch.

[0081] As an extension, in the triggering mechanism of the K5 switch, the coupling heads of the two structures can be structurally optimized so that their metal conductive structures are in contact first, and then the K5 switch is closed. By adopting a switch structure with higher safety performance, the transmission circuits of the two coupling heads can be connected first and then powered on.

[0082] At the same time, refer to Figure 5 On the identification line of the adapter cable, there is also an S6 switch. The S6 switch has a similar function to the S3 switch on the charge-discharge adapter. It is used as a mechanical switch to associate the connection status between the connectors. Only when the adapter cable coupling head and the charge-discharge adapter coupling head are fully connected, the normally open S6 switch will be closed and connected.

[0083] It should be noted that the so-called linkage mechanism has multiple implementation methods, namely, conventional mechanical linkage structure, such as a trigger rod set at the coupling head of the charge and discharge adapter, which drives the S5 switch set in the gun body to directly rotate and switch the circuit by pushing the trigger rod after contact. A magnetic pusher can also be used to achieve a linkage effect.

[0084] Further, an additional circuit design for the identification and charging detection process of the adapter cable is provided, referring to Figure 4 , another implementation is provided.

[0085] There is no complete charging detection circuit in the gun body of the charging and discharging adapter, only a complete discharge detection circuit and a partial charging detection circuit. Figure 4As can be seen in the figure, the charging identification circuit, which was originally connected in parallel, is connected to the two contacts A and B at the coupling head of the charging and discharging adapter through two lines. Figure 6 The structure in the middle frame is provided with two corresponding contacts A and B in the adapter coupling head, and a corresponding identification circuit with a corresponding resistor is provided.

[0086] When the charge and discharge adapter is not connected to the adapter cable, only the vehicle end can be connected to complete the discharge detection process for discharge. When the charge and discharge adapter is connected to the vehicle end and the adapter cable, there is no physical switching module in the gun body, but an abstract switching module is formed by the detachable connection of the two branches A and B. At this time, if the external power supply is not connected, the charge and discharge adapter still maintains the discharge process, MCU1 is powered and recognizes the existence of the conversion line through Q1. At the same time, because the directly connected A and B branches form a complete circuit in parallel with the discharge detection circuit, the resistance value of the original discharge detection circuit is changed, and by setting the appropriate parallel resistance to make the parallel resistance the same as the identification resistance value in the charging detection process, it is directly and rigidly switched to the charging detection process.

[0087] Furthermore, referring to the linkage mechanism provided at the coupling head of the charge and discharge adapter and the coupling head of the adapter cable in the previous embodiment, the same linkage mechanism may also be provided in this embodiment. When the adapter cable is connected to the charge and discharge adapter, the normally closed K2 switch is directly cut off to provide additional safety protection.

[0088] In this implementation, the physical S5 switch is converted into a switching module in an abstract sense, that is, the charging and discharging detection circuit can be directly switched only by inserting the corresponding adapter wire.

[0089] It should be noted that the above-mentioned implementation is a preferred solution provided in combination with the accompanying drawings. For the connection identification conversion mechanism between the adapter and the charge-discharge adapter, other conversion methods can be set for the adapter. That is, a detection circuit is set inside the adapter, which is different from the aforementioned loop solution, but is directly connected to the identification circuit of the external power supply. Only after the charge-discharge adapter is connected to the adapter and connected to the external power supply, the MCU1 in the charge-discharge adapter obtains the identification current transmitted from the external power supply through the Q1 line and converts the S5 switch to perform the charging detection process, and the corresponding control effect can also be achieved. However, this method has poor safety and requires additional corresponding conversion circuits to be set on the adapter, that is, converting strong electricity into signal points and transmitting them into the charge-discharge adapter through the Q1 line for detection.

[0090] Furthermore, in order to improve the safety performance of the entire equipment, other accessories are optimized and limited.

[0091] Reference Figure 6A second control module, namely MCU2, is provided in the adapter cable coupling head of the adapter cable. As an independent control module, it is used to control the opening and closing of the high-voltage circuit of the adapter cable coupling head. When the adapter cable is connected to an external power supply, MCU2 controls the K3 switch provided on the high-voltage circuit of the adapter cable, and the K3 switch always remains in a normally open state, that is, the detection and identification of the charging process or other set pre-processes are not completed, and MCU2 maintains the normally open state control of K3 until it completes the charging detection process and other set pre-processes, and controls K3 to be normally closed to form an electrical connection.

[0092] Specifically, a resistor A on the Q1 line is provided in the charge and discharge adapter, and the line corresponding to Q1 provided in the adapter is connected to MCU2. When MCU2 is powered by an external power supply, MCU2 will close the K3 switch only after detecting the resistor A after the adapter is connected to the charge and discharge adapter to form a complete Q1 loop. This mechanism is different from the charging detection process, and is an independent mechanism for controlling the strong power connection of the adapter, thereby ensuring that the adapter coupling head of the adapter is out of power when the charge and discharge adapter is not connected, thereby improving safety.

[0093] Reference Figure 5 The figure shows the internal circuit principle of the independent socket, in which a corresponding Q1 contact is also provided on the socket coupling head of the independent socket, and the identification circuit with a resistor D set in the independent socket is connected through the Q1 contact. The socket coupling head of the independent socket is used to connect to the adapter cable coupling head. Only when the adapter cable is connected to the independent socket, MCU2 detects the resistor D through the complete Q1 loop, thereby controlling the K3 switch to close and discharge the independent socket.

[0094] Reference Figure 8 , the figure shows the internal circuit design of the converter. That is, there is a same Q1 contact on the adapter, with an identification circuit of resistor C inside. When the adapter plug of the adapter is connected to the adapter, an additional detection loop is formed from the Q1 cable inside the adapter. After the MCU1 of the charge and discharge adapter detects the resistor C, it communicates with the vehicle by adjusting the PWM wave duty cycle and adjusting the charging current to within 10A.

[0095] Furthermore, the operation of the charging and discharging equipment in this application is explained.

[0096] Reference Fig. 9 When charging the vehicle end, connect the charge and discharge adapter to the vehicle end, connect the adapter coupling head of the adapter cable to the charge and discharge adapter coupling head, and then pull out the adapter plug on the reel. It can be directly inserted into an external 16A socket, or it can be connected to a 10A socket through an adapter.

[0097] Reference Fig.10When the vehicle end is connected for discharge, the charge and discharge adapter has completed the discharge detection process. At this time, the integrated discharge socket is energized. The adapter plug is inserted into the integrated discharge socket, and the adapter coupling head is connected to the socket coupling head, thereby achieving discharge over a longer distance and more sockets.

[0098] Reference Fig.11 , by connecting the external power supply to the independent socket through the adapter cable, it can also provide the effect of using the socket. At the same time, it can cooperate with the set adapter structure, and set different specifications of overload protection structures in the independent socket and the adapter, so as to provide the safety performance of connecting the external power supply of specifications such as 16A or 10A.

[0099] The utility model is not limited to the above optional implementation modes, and anyone can derive other various forms of products under the enlightenment of the utility model. The above specific implementation modes should not be understood as limiting the protection scope of the utility model. The protection scope of the utility model shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. An automobile charging and discharging device, used to connect a vehicle to an external power source or electrical appliance for charging or discharging, characterized in that: It includes a charging and discharging adapter and a transfer cable as independent structures, wherein the charging and discharging adapter is provided with an internal circuit for connecting to a vehicle end for charging and discharging identification detection and conduction; The charge-discharge adapter comprises a gun head (2) connected to the vehicle end, a charge-discharge adapter coupling head (3) and an integrated discharge socket (4) connected to an external electrical appliance, and the gun head (2) is conductively connected to the charge-discharge adapter coupling head (3) and the integrated discharge socket (4) via an internal circuit; The adapter cable comprises an adapter cable coupling head (6) connected to a charging and discharging adapter coupling head (3), and also comprises an adapter cable plug (7) connected to an external power source and an integrated discharge socket (4).

2. The automobile charging and discharging device according to claim 1, characterized in that: The internal circuit includes a transmission circuit and a charge and discharge detection circuit. The charge and discharge detection circuit has a switching module that switches the charge detection circuit and the discharge detection circuit and initially maintains the connection with the discharge detection circuit. The adapter has a linkage module that causes the switching module to switch to the charge detection circuit after the charge and discharge adapter is connected.

3. The automobile charging and discharging device according to claim 2, characterized in that: The charge and discharge detection circuit has a first control module, the first control module has an identity recognition port arranged on the charge and discharge adapter coupling head (3) for docking with a switching line, and the switching line is provided with a switching detection circuit connected with the identity recognition port to form a loop.

4. The automobile charging and discharging device according to claim 3, characterized in that: The switching detection circuit is a loop with a first identification resistor, and the first control module is connected to the switching detection circuit to form a complete loop in which the first control module outputs electrical energy for detection; or The transfer detection circuit comprises two conductive ends arranged on a transfer cable coupling head (6) and a transfer cable plug (7); when the transfer cable is connected to a charge and discharge adapter and an external power source, the transfer detection circuit and the first control module form a complete loop for detecting electrical energy output by the external power source.

5. The automobile charging and discharging device according to claim 2, characterized in that: The adapter cable coupling head (6) is provided with a trigger mechanism that is linked to the switching module.

6. The automobile charging and discharging device according to claim 5, characterized in that: The charge and discharge detection circuit has a first control module, the first control module has an identity recognition port arranged on the charge and discharge adapter coupling head (3) for docking with a switching line, and the switching line is provided with a switching detection circuit connected with the identity recognition port to form a loop.

7. An automobile charging and discharging device according to any one of claims 1 to 6, characterized in that: It also comprises an independent socket (10), wherein the independent socket (10) has a plurality of sockets for connecting external electrical appliances, and also has a socket coupling head (9) for connecting a switching line coupling head (6).

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