CN113858994A

CN113858994A - Charging adapter

Info

Publication number: CN113858994A
Application number: CN202010617216.8A
Authority: CN
Inventors: 刘超; 程东; 房伟嘉; 薛鹏辉; 陈明文
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-12-31
Anticipated expiration: 2040-06-30
Also published as: CN113858994B

Abstract

The invention provides a charging adapter, which comprises: the first charging interface part is suitable for being connected with direct current charging equipment; a second charging interface part adapted to be connected to an ac charging device; and the electric connection structure is respectively connected with the first charging interface part and the second charging interface part and is used for switching a direct current signal of the direct current charging equipment to alternating current charging equipment or switching an alternating current signal of the alternating current charging equipment to the direct current charging equipment. The charging adapter of the embodiment of the invention realizes the physical connection between the direct current charging equipment and the alternating current charging equipment in a switching mode, and provides a hardware foundation for the direct current charging of the vehicle, thereby realizing the direct current charging function of the vehicle.

Description

Charging adapter

Technical Field

The invention relates to the technical field of vehicles, in particular to a charging adapter.

Background

In recent years, the new energy automobile industry is developed vigorously to drive the rapid layout and construction of related charging facility industries, governments in China and various regions encourage support of public charging, but the alternating current charging station is low in charging speed and low in corresponding charging income, operators are willing to build direct current charging stations with relatively high income, most hybrid vehicles only support alternating current charging, so that the hybrid vehicles are slow in charging, and the field of view development and development of the hybrid vehicles are influenced.

At present, in some schemes, a direct current charging port is added on the hybrid vehicle, so that the hybrid vehicle has the functions of alternating current charging and direct current charging to meet the charging requirement. In other schemes, a dc-to-ac apparatus is designed, as shown in fig. 1, to convert dc power into ac power and charge a vehicle by incorporating an ac-to-dc converter or the like.

However, the addition of the direct-current charging port on the hybrid vehicle requires modification of a vehicle body mold and a model, so that the cost is high, the period is long, and the hybrid vehicle is not suitable for developed vehicle types.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a charging adapter that provides a hardware basis for dc charging of a vehicle.

In order to achieve the above object, an embodiment of the present invention provides a charging adapter, including: the first charging interface part limits a first charging interface and is suitable for being connected with direct-current charging equipment; a second charging interface portion defining a second charging interface adapted to connect to an AC charging device; and the electric connection structure is respectively connected with the first charging interface part and the second charging interface part and is used for switching a direct current signal of the direct current charging equipment to the alternating current charging equipment or switching an alternating current signal of the alternating current charging equipment to the direct current charging equipment.

According to the charging adapter provided by the embodiment of the invention, by arranging the first charging interface part, the second charging interface part and the electric connection structure, when the direct current charging is carried out, the first charging interface part is connected with the direct current charging equipment, the second charging interface part is connected with the alternating current charging equipment, and a direct current power supply sent by the direct current charging equipment enters the alternating current charging equipment through the first charging interface part, the electric connection structure and the second charging interface part, so that the physical connection between the direct current charging equipment and the alternating current charging equipment such as a vehicle-mounted terminal is realized in a switching way, and a hardware basis is provided for the direct current or alternating current charging of a vehicle. .

In some embodiments, the electrical connection structure includes: a dc power supply positive terminal, a dc power supply negative terminal, a first ground terminal, a first communication terminal, a second communication terminal, a first connection confirmation terminal, and a second connection confirmation terminal connected to the first charging interface part; a first ac power supply terminal, a second phase ac power supply terminal, a third phase ac power supply terminal, a neutral terminal, a second ground terminal, a third connection confirmation terminal, and a charging control confirmation terminal, which are connected to the second charging interface unit; wherein the first ground terminal is electrically connected to the second ground terminal, the second connection confirmation terminal is electrically connected to the third connection confirmation terminal, a connection line between the first ground terminal and the second ground terminal has a first node, and a connection line between the second connection confirmation terminal and the third connection confirmation terminal has a second node; the electric connection structure further comprises an electric signal identification unit, wherein a first end of the electric signal identification unit is connected with the first node, and a second end of the electric signal identification unit is connected with the second node.

In some embodiments, the electrical signal identification unit comprises a resistor or a plurality of resistors arranged in series and parallel. The identification resistor can play a role in identifying the direct current charging mode, and the detected resistance value is matched with different charging modes of the vehicle-mounted terminal, so that the charging and discharging mode is determined.

In some embodiments, the electrical connection structure further comprises: a first pre-fixing member for pre-fixing a terminal connected to the first charging interface part; and the second pre-fixing piece is used for pre-fixing a terminal connected with the second charging interface part.

In some embodiments, the charging adapter further comprises: the first shell and the second shell are connected in a matched mode to form a hollow cavity; the electric connection structure is arranged in the accommodating cavity of the through cavity, the first charging interface part is arranged at one cavity opening of the through cavity, and the second charging interface part is arranged at the other cavity opening of the through cavity.

In some embodiments, the charging adapter further comprises: first locking structure, first locking structure includes fixed part and latch hook, the fixed part sets up on the outer wall of well logical cavity, the latch hook with the fixed part is connected each other, the latch hook is used for exchanging the spacing recess cooperation of the mouth that charges with on-vehicle, with the locking the adapter that charges with on-vehicle interchange the mouth that charges.

In some embodiments, a clamping groove is disposed on an outer wall of the first charging interface part, and the clamping groove is used for being matched with a locking structure of the dc charging device to fix the charging adapter and the dc charging device.

In some embodiments, the second charging interface portion includes a fault-proof portion for adapting to an onboard ac charging port.

In some embodiments, the first charging interface portion and the second charging interface portion each include a seal and a stopper.

In some embodiments, the first charging interface part and the second charging interface part are integrally formed into a charging input and output interface, and the electrical connection structure is disposed in an accommodating space inside the charging input and output interface.

In some embodiments, the charging adapter further comprises a second locking structure disposed on an outer wall of the charging input-output interface.

In some embodiments, the charging adaptor further comprises a handle.

In some embodiments, the charging adapter further comprises a dust-proof and water-proof cover which is detachably arranged.

In some embodiments, the charging adapter further comprises a status prompting unit.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a vehicle charging adapter in the related art;

fig. 2 is a schematic structural diagram of a charging adapter according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the electrical connections of a DC charging device for charging a vehicle via a charging adapter in accordance with one embodiment of the present invention;

figure 4 is a schematic circuit diagram of a charging adapter according to one embodiment of the present invention;

figure 5 is a schematic circuit diagram of a charging adapter according to another embodiment of the present invention;

fig. 6 (b) is a perspective view of a charging adapter according to an embodiment of the present invention;

fig. 6 (a) is a schematic view of the charging adapter viewed from a perspective view corresponding to fig. 6 (b);

fig. 6 (c) is a schematic view of the charging adapter from a perspective view of b corresponding to the perspective view of (b) in fig. 6;

fig. 7 (a) is a schematic structural diagram of a charging adapter according to another embodiment of the present invention;

fig. 7 (b) is a sectional view corresponding to fig. 7 (a).

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

In the embodiment, for a vehicle with a vehicle-mounted alternating current charging port, alternating current charging is performed on the vehicle through an alternating current charging station, because the alternating current charging speed is low, in order to improve income, an operator prefers to establish a direct current charging station, and improve the charging speed of the vehicle, and in order to solve the problem that the alternating current charging port of the hybrid vehicle is not matched with the charging structure of the direct current charging station and cannot be directly connected, the embodiment of the invention provides the charging adapter 1, which can realize physical connection between a direct current charging device and the vehicle-mounted alternating current charging port through a transfer connection mode, and provides a precondition basis of physical connection and signal transmission for the direct current charging of the vehicle.

A charging adapter according to an embodiment of the present invention is described below with reference to fig. 2 to 6.

As shown in fig. 2, the charging adapter 1 according to the embodiment of the present invention includes a first charging interface unit 11, a second charging interface unit 12, and an electrical connection structure 13.

The first charging interface 11 is suitable for connecting a dc charging device; the second charging interface section 12 is adapted to connect an ac charging device such as an in-vehicle ac charging interface; the electrical connection structure 13 is connected to the first charging interface 11 and the second charging interface 12, respectively, and is configured to transfer a dc signal of the dc charging device to the vehicle-mounted ac charging interface, or transfer an ac signal of the ac charging device to the dc charging device.

In the embodiment, when the vehicle carries out alternating current charging, alternating current charging equipment matches with the on-vehicle alternating current charging mouth, need not charging adapter 1, directly inserts the on-vehicle alternating current charging mouth with the alternating current rifle that charges, realizes the alternating current charging function of vehicle.

When the vehicle carries out direct current charging, because direct current charging equipment and on-vehicle interchange charge mouthful mismatch, connect charging adapter 1 between direct current charging equipment and on-vehicle interchange charge mouthful, realize the physics of direct current charging equipment and on-vehicle interchange charge mouthful through charging adapter 1 and be connected, solve the unmatched problem of direct current charging equipment and on-vehicle interchange charge mouthful, and through electric connection structure 13 with direct current charging equipment's direct current signal switching to on-vehicle interchange charge mouthful, set up direct current circuit and alternating current circuit in the car, according to charging source automatic selection suitable charging circuit, and then the vehicle side passes through distribution control, import the direct current to the battery package, in order to charge for the battery package, thereby realize that direct current charging equipment carries out the function that direct current charges for the vehicle.

Referring to fig. 3, a dc charging process of a vehicle will be described, as shown in fig. 3, which is a schematic diagram of a circuit connection of a dc charging device for charging a vehicle through a charging adapter according to an embodiment of the present invention. When the vehicle is charged by direct current, the first charging interface part 11 of the charging adapter 1 is connected with a direct current charging device such as a direct current charging gun in a matching manner, the second charging interface part 12 is connected with a vehicle-mounted alternating current charging port of the vehicle such as a new energy vehicle, a direct current signal of the direct current charging device enters the first charging interface part 11 and enters the vehicle-mounted end through the electric connection structure 13 and the second charging interface part 12, physical connection between the direct current charging device and the vehicle is achieved, a premise is provided for charging a power battery by the direct current charging device, vehicle body or modeling revising and developing are not needed, a vehicle model development period and cost are saved, and through a switching mode, the vehicle can achieve two charging modes of direct current charging and alternating current charging, and a user can select different charging modes according to needs.

According to the charging adapter 1 of the embodiment of the invention, the first charging interface part 11, the second charging interface part 12 and the electric connection structure 13 are arranged, when the direct current charging is carried out, the first charging interface part 11 is connected with the direct current charging equipment, the second charging interface part 12 is connected with the vehicle-mounted alternating current charging port, the direct current signal sent by the direct current charging equipment enters the vehicle-mounted end through the first charging interface part 11, the electric connection structure 13 and the second charging interface part 12, namely, the physical connection between the direct current charging equipment and the vehicle-mounted end is realized through a switching way, the charging adapter 1 has no other power devices to participate, the direct current signal of the direct current charging equipment is switched to the vehicle-mounted alternating current charging port only through the electric connection structure 13, a direct current circuit and an alternating current circuit are arranged in the vehicle, a proper charging circuit is automatically selected according to the charging power supply, and further the vehicle side is controlled through power distribution, with direct current input to battery package to charge for the battery package, thereby realize the direct current function of charging of vehicle, solve the slow problem of charging that alternating-current charging leads to, and, because charging adapter 1 compact structure is reasonable, make the volume and the weight of adapter less, it is more light and handy convenient during the use, reduced the bearing pressure of adapter, improved life.

In the embodiment, the internal connection of the charging adapter 1 according to the embodiment of the present invention is different from the internal connection of the adapter in the related art, and the internal connection of the charging adapter according to the embodiment of the present invention is described below with reference to the drawings.

In some embodiments, the electrical connection structure 13 includes a positive dc power supply terminal, a negative dc power supply terminal, a first ground terminal, a first communication terminal, a second communication terminal, a first connection confirmation terminal, and a second connection confirmation terminal connected to the first charging interface unit 11, and a first ac power supply terminal, a second ac power supply terminal, a third ac power supply terminal, a neutral terminal, a second ground terminal, a third connection confirmation terminal, and a charging control confirmation terminal connected to the second charging interface unit. The first ground terminal is electrically connected to the second ground terminal, and the second connection confirmation terminal is electrically connected to the third connection confirmation terminal.

For example, fig. 4 is a schematic circuit diagram of a charging adapter according to an embodiment of the present invention. As shown in fig. 4, the terminals connected to the first charging interface part 11 include a DC + phase contact, a DC-phase contact, a first PE phase contact, an S + phase contact, an S-phase contact, a CC1 phase contact, and a CC2 phase contact; the terminals connected to the second charging interface part 12 include an L1-phase contact, an L2-phase contact, an L3-phase contact, an N-phase contact, a second PE-phase contact, a CC-phase contact, and a CP-phase contact; the first PE phase contact body is electrically connected with the second PE phase contact body, the CC2 phase contact body is electrically connected with the CC phase contact body, a first node is arranged on a connecting line of the first PE phase contact body and the second PE phase contact body, and a second node is arranged on a connecting line of the CC2 phase contact body and the CC phase contact body.

The electrical connection structure 13 further includes an electrical signal recognition unit such as a recognition resistance unit R5, the recognition resistance unit R5 having a first node on a connection line of the first ground terminal and the second ground terminal, and a second node such as a node a and a node b in fig. 4 on a connection line of the second connection confirmation terminal and the third connection confirmation terminal. The first terminal of the sensing resistor unit R5 is connected to the first node a, and the second terminal of the sensing resistor unit R5 is connected to the second node b. When the direct-current charging is carried out, after the direct-current charging equipment and the charging switching device are physically connected with the vehicle-mounted charging socket, the vehicle side can detect the resistance value between the vehicle-mounted end detection charging connection confirmation terminal CC and the grounding terminal, so as to obtain the total resistance value of the identification resistance unit R5 and elements on the path, the total resistance value is matched with the identification total resistance value of the vehicle-mounted end under different charging modes, if the total resistance value falls into the range of the direct-current charging standard resistance, the vehicle is determined to carry out the direct-current charging mode, and therefore the function of identifying the charging and discharging mode of the vehicle is achieved, and the charging control strategy of the vehicle-mounted charger is convenient to adjust.

As shown in fig. 4, the DC + phase contact and the DC-phase contact are used to transmit a DC power signal from the DC charging device; the S + phase contact body and the S-phase contact body are used for carrying out direct current charging message interaction with direct current charging equipment; the CC1 phase contact and the CC2 phase contact are used for transmitting a direct current charging connection signal, namely, for confirming whether the direct current charging equipment is connected or not; the CC phase contact body is used for transmitting a connection signal of the direct current charging equipment to the vehicle-mounted end; the CP phase contact body is used for carrying out direct current charging message interaction with the vehicle-mounted end so as to control the direct current power supply to be within the charging allowable range of the vehicle and ensure charging safety;

in some embodiments, as shown in fig. 4, a DC + phase contact is physically connected to the L1 contact, and a DC-phase contact is physically connected to the N contact to transmit DC power for the vehicle-mounted terminal; the first PE phase contact body is electrically connected with the second PE phase contact body; the S + phase contact body is connected with the L2 contact body, and the S-phase contact body is connected with the L3 contact body to carry out direct current signal message interaction; the CC2 phase contact body is connected with the CC contact body to confirm that the connection between the direct current charging equipment and the vehicle-mounted end is completed; the CCI phase contact body is connected with the CP phase contact body, and controls the direct current power supply input to the vehicle-mounted end to be within the vehicle charging allowable range, so that the direct current charging of the vehicle is realized.

Alternatively, as shown in fig. 5, a schematic circuit diagram of a charging adapter according to another embodiment of the present invention is shown. The DC + phase contact body is electrically connected with the L2 contact body, and the DC-phase contact body is electrically connected with the L3 contact body and used for transmitting a direct-current power supply to the vehicle-mounted end; the S + phase contact body is electrically connected with the L1 contact body, and the S-phase contact body is electrically connected with the N contact body to carry out CAN communication message interaction; the CC2 phase contact body is connected with the CC contact body and used for confirming that the connection between the direct current charging equipment and the vehicle-mounted end is completed; and the CC1 phase contact body is connected with the CP phase contact body and is used for controlling the direct current power supply input to the vehicle-mounted end to be within the vehicle charging allowable range and realizing the direct current charging of the vehicle.

As shown in fig. 4 or 5, the electrical connection structure 13 is used for transmission and transfer of a charging signal between the dc charging device and the vehicle-mounted ac charging port. The electrical connection between the terminals, i.e., the phase contact bodies, can be made by a cable connection or a metal, e.g., copper or aluminum, or a circuit board connection, which is not particularly limited herein.

In some embodiments, as shown in fig. 2, the electrical connection structure 13 further includes a first pre-fixing member 14 and a second pre-fixing member 15, the first pre-fixing member 14 is used to pre-fix the terminal connected to the first charging interface part 11, the first pre-fixing member 14 is a component disposed near the first charging interface part 11 in fig. 2, and the first pre-fixing member 14 can match with the shape of the first charging interface part 11 to realize physical clamping; the second pre-fixing member 15 is used to pre-fix the terminal connected to the second charging interface part 12, the second pre-fixing member 15 is a component disposed near the second charging interface part 12 in fig. 2, and the second pre-fixing member 15 can be matched with the second charging interface part 12 to implement physical clamping. The first pre-fixing piece 14 and the second pre-fixing piece 15 are used for fixing the connecting terminals, so that the charging adapter 1 is firmly connected with the direct-current charging equipment and the vehicle-mounted alternating-current charging port, the loosening condition in the charging process is prevented, the charging signal can be normally transmitted, and the switching of the charging signal is realized.

In some embodiments, as shown in fig. 2, the charging adapter 1 further includes a first housing 16 and a second housing 17, where the first housing 16 and the second housing 17 are connected in a matching manner to form a hollow cavity; the electrical connection structure 13 is disposed in the accommodating cavity of the hollow cavity, the first charging interface part 11 is disposed at one opening of the hollow cavity, and the second charging interface part 12 is disposed at the other opening of the hollow cavity. The first charging interface part 11, the second charging interface part 12 and the electrical connection structure 13 are all disposed in the accommodating cavity of the hollow cavity, and the assembling modes of the interfaces and the structures may include a bolt connection mode, an interference fit mode, a gluing connection mode, and the like, and the assembling modes are various and are not limited specifically herein.

In some embodiments, as shown in fig. 2, the charging adapter 1 further includes a locking structure 18, the locking structure 18 includes a fixing portion 19 and a locking hook 20, the fixing portion 19 is disposed on an outer wall of the hollow cavity, the locking hook 20 is connected to the fixing portion 19, and the locking hook 20 is used for being matched with a limiting groove of the vehicle-mounted ac charging port to lock the charging adapter 1 and the vehicle-mounted ac charging port, so as to prevent connection looseness during charging and influence on a charging process.

Fig. 6 is a schematic diagram of an external shape of a charging adapter according to an embodiment of the present invention. Wherein, (a) is a schematic diagram of the charging adapter viewed from a visual angle a; (b) is a perspective view of the charging adapter; (c) a schematic view of the charging adapter is shown from a b-view. As shown in fig. 6, the fixing portion 19 may be disposed on an outer wall of the charging adapter 1, that is, an outer wall of a hollow cavity formed by the first housing 16 and the second housing 17 in a matching connection.

In the embodiment, as shown in fig. 2, after the charging adapter 1 is connected to the vehicle-mounted ac charging port, the latch hook 20 is engaged with the limiting groove of the vehicle-mounted ac charging port, and the mechanical latch of the vehicle-mounted ac charging port is popped out to limit the latch hook 20 to pop up, so that the charging adapter 1 is locked to the vehicle-mounted ac charging port, and it is ensured that the charging adapter 1 is not loosened or affected by external factors during the charging process, thereby avoiding damaging the connection state between the charging adapter 1 and the vehicle-mounted ac charging port.

In some embodiments, as shown in fig. 2, a clamping groove 21 is disposed on an outer wall of the first charging interface 11, and the clamping groove 21 is configured to cooperate with the locking structure 18 of the dc charging device to fix the charging adapter 1 and the dc charging device, so as to ensure that the charging adapter 1 is firmly connected with the dc charging device, and prevent the loosening during the charging process.

In some embodiments, the second charging interface portion 12 may further include a mistake-proofing portion, the mistake-proofing portion may be a component disposed inside the second charging interface portion, such as a raised circular truncated cone that is engaged with the vehicle-mounted charging ac port, when the second charging interface portion 12 is physically connected with the vehicle-mounted ac charging port, the raised circular truncated cone is engaged with a recessed portion of the vehicle-mounted ac charging port, when the second charging interface portion 12 is not engaged with the vehicle-mounted ac charging port, the mistake-proofing portion may prevent the second charging interface portion 12 from being inserted into the vehicle-mounted ac charging port of the vehicle, that is, the mistake-proofing portion may prevent the second charging interface portion 12 from being connected with the vehicle-mounted ac charging port, so that the charging adapter 1 may be prevented from being connected with the vehicle-mounted ac charging port that is not engaged.

In some embodiments, the first charging interface 11 and the second charging interface 12 may each include a sealing element and a limiting element, when the dc charging is performed, the first charging interface 11 is connected to the dc charging device, the sealing element is used for sealing connection between the first charging interface 11 and the dc charging device, and the second charging interface 12 is connected to the vehicle-mounted ac charging socket, and also used for sealing connection between the first charging interface and the vehicle-mounted ac charging socket, the sealing connection may be dustproof and waterproof, and protect the charging process from the external environment, the limiting element of the first charging interface 11 is connected to the dc charging device, so that the first charging interface and the vehicle-mounted ac charging socket are connected in a matching manner, and the assembly performance is better, that is, the sealing element and the limiting element are used for meeting the sealing performance and the assembly performance of the first charging interface 11.

In some embodiments, as shown in fig. 7, a schematic structural diagram of a charging adapter according to an embodiment of the present invention is shown. Wherein, (a) is a perspective view of the charging adapter; (b) a schematic cross-sectional structure diagram of the charging adapter; the first charging interface part 11 and the second charging interface part 12 are integrally formed as a charging input/output interface 22, and the electrical connection structure 13 is disposed in an accommodating space inside the charging input/output interface 22.

Further, as shown in fig. 7, the charging adapter 1 may further include a second locking structure 25, and the locking structure 25 is disposed on an outer wall of the charging input/output interface 22.

Specifically, through setting up the integrated into one piece structure with the adapter 1 that charges, set up electric connection structure 13 holding the intracavity, the outer wall sets up second locking structure 25, the internals quantity has been reduced, under the condition rational in infrastructure, protective capability is stronger, the outward appearance is cleaner and tidier, when carrying out the direct current and charging, the adapter 1 that will set up to the integrated into one piece structure inserts on-vehicle interchange socket that charges, because this adapter is small, it is lighter, can alleviate the burden of on-vehicle interchange socket that charges, it is more firm to make the connection, thereby realize the function of the switching of charging.

In some embodiments, the charging adapter 1 may further include a handle, and the adapter is convenient to install and carry by being provided with the handle.

In some embodiments, the adapter 1 that charges can also be including dismantling the dustproof and waterproof blanking cover that sets up, when not using this adapter 1 that charges, with dustproof and waterproof blanking cover lid on the interface of adapter 1 that charges, can prevent that dust from getting into the adapter and can prevent damp, avoids the interior circuit of adapter to wet, plays the effect of protection adapter 1 that charges.

In some embodiments, the charging adapter 1 may further include a status prompting unit, for example, a status prompting lamp is added, and the status prompting lamp is controlled to be turned on or turned off or changed in color according to different current statuses of the charging adapter 1, such as charging status or full charging status, so that a user can know the use status of the current adapter.

In summary, according to the charging adapter 1 of the embodiment of the present invention, the first charging interface 11, the second charging interface 12 and the electrical connection structure 13 are provided, when performing dc charging, the first charging interface 11 is connected to a dc charging device, and the second charging interface 12 is connected to a vehicle ac charging port, a dc signal sent by the dc charging device enters the vehicle terminal through the first charging interface 11, the electrical connection structure 13 and the second charging interface 12, that is, physical connection among the dc charging device, the charging adapter 1 and the vehicle terminal is realized by switching, no other power device participates in the connection, the dc signal of the dc charging device is only switched to the vehicle ac charging port through the electrical connection structure 13, so as to realize a dc charging function of the vehicle, solve the problem of slow charging caused by ac charging, and because the charging adapter 1 has a compact and reasonable structure, the adapter is small in size and weight, light and convenient to use, bearing pressure of the adapter is reduced, and service life is prolonged. And the charging adapter has certain matching performance, mainly serves the vehicle which has a direct current charging function and can be matched with the second charging interface part 12 of the adapter, and prevents the adapter from being connected to an inapplicable vehicle charging port.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A charging adapter, comprising:

the first charging interface part limits a first charging interface and is suitable for being connected with direct-current charging equipment;

a second charging interface portion defining a second charging interface adapted to connect to an AC charging device; (ii) a

And the electric connection structure is respectively connected with the first charging interface part and the second charging interface part and is used for switching a direct current signal of the direct current charging equipment to the alternating current charging equipment or switching an alternating current signal of the alternating current charging equipment to the direct current charging equipment.

2. The charging adapter as recited in claim 1 wherein the electrical connection structure comprises:

a dc power supply positive terminal, a dc power supply negative terminal, a first ground terminal, a first communication terminal, a second communication terminal, a first connection confirmation terminal, and a second connection confirmation terminal connected to the first charging interface part;

a first ac power supply terminal, a second phase ac power supply terminal, a third phase ac power supply terminal, a neutral terminal, a second ground terminal, a third connection confirmation terminal, and a charging control confirmation terminal, which are connected to the second charging interface unit;

wherein the first ground terminal is electrically connected to the second ground terminal, the second connection confirmation terminal is electrically connected to the third connection confirmation terminal, a connection line between the first ground terminal and the second ground terminal has a first node, and a connection line between the second connection confirmation terminal and the third connection confirmation terminal has a second node;

the electric connection structure further comprises an electric signal identification unit, wherein a first end of the electric signal identification unit is connected with the first node, and a second end of the electric signal identification unit is connected with the second node.

3. The charging adapter according to claim 2, wherein the electrical signal identification unit comprises a resistor or a plurality of resistors arranged in series and parallel.

4. The charging adapter of claim 2, wherein the electrical connection structure further comprises:

a first pre-fixing member for pre-fixing a terminal connected to the first charging interface part;

and the second pre-fixing piece is used for pre-fixing a terminal connected with the second charging interface part.

5. The charging adapter of claim 1, wherein the charging adapter further comprises:

the first shell and the second shell are connected in a matched mode to form a hollow cavity;

the electric connection structure is arranged in the accommodating cavity of the through cavity, the first charging interface part is arranged at one cavity opening of the through cavity, and the second charging interface part is arranged at the other cavity opening of the through cavity.

6. The charging adapter of claim 5, wherein the charging adapter further comprises:

first locking structure, first locking structure includes fixed part and latch hook, the fixed part sets up on the outer wall of well logical cavity, the latch hook with the fixed part is connected each other, the latch hook is used for exchanging the spacing recess cooperation of the mouth that charges with on-vehicle, with the locking the adapter that charges with on-vehicle interchange the mouth that charges.

7. The charging adapter according to claim 5, wherein a slot is disposed on an outer wall of the first charging interface portion, and the slot is configured to cooperate with a locking structure of the dc charging device to fix the charging adapter and the dc charging device.

8. The charging adapter of claim 5, wherein the second charging interface portion comprises a fault-proof portion configured to fit an onboard ac charging port.

9. The charging adapter according to claim 5, wherein the first charging interface portion and the second charging interface portion each comprise a seal and a stop.

10. The charging adapter according to claim 1, wherein the first charging interface part and the second charging interface part are integrally formed as a charging input/output interface, and the electrical connection structure is disposed in a receiving space inside the charging input/output interface.

11. The charging adapter of claim 10, wherein the charging adapter further comprises a second locking structure disposed on an outer wall of the charging input-output interface.

12. The charging adapter of any one of claims 1-11, wherein the charging adapter further comprises a handle.

13. The charging adapter of any one of claims 1-11, wherein the charging adapter further comprises a dust and water resistant cover that is removably disposable.

14. The charging adapter of any one of claims 1-11, wherein the charging adapter further comprises a status prompt unit.