Charging socket and vehicle

Abstract

The utility model relates to a charging socket and a vehicle. The charging socket comprises a shell; the circuit board is installed in the shell, and the circuit board is provided with a positive electrode auxiliary terminal, a negative electrode auxiliary terminal and a grounding terminal; the circuit board further comprises a current limiting device, and the current limiting device is at least located on a path between the negative electrode auxiliary terminal and the grounding terminal. The current limiting device is used for limiting reverse current between the negative electrode auxiliary terminal and the grounding terminal, the risk that charging cannot be continued due to the fact that an access between the negative electrode auxiliary terminal and the grounding terminal is ablated by the reverse current is reduced, and the risk that the charging pile and the vehicle controller are damaged by overlarge current is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a charging socket and a vehicle. Background Art

[0002] At present, vehicles are usually charged through charging piles, and the charging piles and vehicles are connected through charging sockets. The auxiliary power supply of the charging pile is connected to the vehicle controller of the vehicle through the charging socket, and the charging pile can send signals to the vehicle controller through the charging socket. When the charging pile fails, a reverse current is generated in the auxiliary circuit of the auxiliary power supply, charging socket and vehicle controller. The reverse current is easy to burn the auxiliary circuit, causing the vehicle to be unable to continue charging, and even a car burn accident. Utility Model Content

[0003] An embodiment of the present application provides a charging socket and a vehicle, wherein a current limiting device is provided on a circuit board of the charging socket, for limiting the reverse current on a path between a negative auxiliary terminal and a ground terminal of the charging socket, thereby reducing the risk of the path between the negative auxiliary terminal and the ground terminal being burned by the reverse current, resulting in inability to continue charging.

[0004] A first aspect of the present application provides a charging socket, comprising: a shell; a circuit board, wherein the circuit board is installed in the shell, and the circuit board has a positive auxiliary terminal, a negative auxiliary terminal and a ground terminal; wherein the circuit board also includes a current limiting device, and the current limiting device is at least located in the path between the negative auxiliary terminal and the ground terminal.

[0005] In this embodiment, the current limiting device is used to limit the reverse current between the negative auxiliary terminal and the ground terminal, reduce the risk of the path between the negative auxiliary terminal and the ground terminal being burned by the reverse current and causing the charging to be unable to continue, and reduce the risk of excessive current damaging the charging pile and the vehicle controller.

[0006] In a specific embodiment, the circuit board also includes a positive connection terminal and a negative connection terminal, the positive auxiliary terminal is connected to the positive connection terminal, and the negative connection terminal is connected to the negative auxiliary terminal; the current limiting device is arranged between the positive auxiliary terminal and the positive connection terminal.

[0007] In this embodiment, the current limiting device arranged between the positive auxiliary terminal and the positive connection terminal is used to reduce the current between the positive auxiliary terminal and the positive connection terminal, and the current limiting device arranged between the negative auxiliary terminal and the ground terminal is used to reduce the current between the negative auxiliary terminal and the ground terminal, thereby further limiting the current on the auxiliary circuit of the charging socket.

[0008] In a specific embodiment, the current limiting device includes at least a first current limiting device, and the first current limiting device is configured to reduce the current between the negative auxiliary terminal and the connection terminal.

[0009] In this embodiment, when the charging pile works normally, the first current limiting device can reduce the forward current on the auxiliary circuit. Since the charging pile receives the signal of the charging pile through the charging socket, when the auxiliary circuit is turned on, the vehicle controller can receive the signal. Therefore, the first current limiting device does not affect the signal transmission during normal operation. When there is a reverse current in the auxiliary circuit of the charging socket, the first current limiting device can reduce the reverse current between the negative auxiliary terminal and the ground terminal, reduce the risk of the reverse current burning the path between the negative auxiliary terminal and the ground terminal, and reduce the risk of the reverse current damaging the charging pile and the vehicle controller.

[0010] In a specific embodiment, the first current limiting device includes a resistor and / or an electronic fuse. When the first current limiting device is an electronic fuse, and the charging pile generates a reverse current in the path between the negative auxiliary terminal and the ground terminal due to a fault, the reverse current in the path between the negative auxiliary terminal and the ground terminal causes the electronic fuse to disconnect, thereby cutting off the flow path of the reverse current. After the fault is repaired and eliminated, the electronic fuse can automatically resume conduction, thereby automatically resuming conduction in the path between the negative auxiliary terminal and the ground terminal, without the need to replace the first current limiting device on the charging socket, further reducing costs.

[0011] In a specific embodiment, the current limiting device includes at least a second current limiting device, and the second current limiting device is configured to block the current flowing from the negative auxiliary terminal to the ground terminal. In this embodiment, the second current limiting device allows the current flowing from the positive auxiliary terminal to the negative auxiliary terminal to pass, and the current flowing from the negative auxiliary terminal to the ground terminal cannot pass. When the charging pile works normally, the forward current of the auxiliary circuit can pass through the diode normally, so that the signal of the charging pile can be transmitted to the vehicle controller through the diode. When there is a reverse current in the path between the negative auxiliary terminal and the ground terminal, the diode between the negative auxiliary terminal and the ground terminal can block the reverse current from passing, thereby preventing the reverse current from burning the path between the negative auxiliary terminal and the ground terminal, and preventing the reverse current from damaging the charging pile and the vehicle controller.

[0012] In a specific embodiment, the second current limiting device includes a diode.

[0013] In a specific embodiment, the distance between the current limiting device and the negative auxiliary terminal is smaller than the distance between the current limiting device and the ground terminal, that is, the current limiting device is closer to the negative auxiliary terminal, so that the path of the reverse current flowing from the negative auxiliary terminal to the current limiting device is shorter, thereby being able to quickly reduce or block the reverse current in the path between the negative auxiliary terminal and the ground terminal.

[0014] In a specific embodiment, the circuit board includes two or more current limiting devices, and the two or more current limiting devices are connected in series and / or in parallel. In this embodiment, when multiple current limiting devices are connected in series, even if one or more current limiting devices are damaged, the other current limiting devices can still play a role in limiting the reverse current, thereby improving the reliability of limiting the reverse current. When multiple current limiting devices are connected in parallel, even if one or more current limiting devices are disconnected, the other current limiting devices that are not disconnected can still conduct the path between the negative auxiliary terminal and the ground terminal, thereby enabling normal charging.

[0015] In a specific embodiment, the shell includes a panel having a positive plug and a negative plug, and the board body of the circuit board is provided with a first notch and a second notch, the first notch is used to avoid the positive plug, and the second notch is used to avoid the negative plug, so that the positive plug and the negative plug can extend along the thickness direction of the charging socket to be connected to the charging pile.

[0016] In a specific embodiment, the housing includes a panel, and the circuit board is a structure symmetrical about a center line of the panel.

[0017] The second aspect of the present application provides a charging socket, the charging socket includes a shell, the shell includes a first connection plug and a second connection end, the first connection end is used to connect to the charging pile, the second connection end is used to connect to the vehicle controller of the vehicle, and the first connection end and the second connection end are electrically connected through a wire. Among them, a current limiting device is connected between the first connection end and the second connection end, and the current limiting device is used to limit the reverse current between the first connection end and the second connection end, reduce the risk of the passage between the first connection end and the second connection end being burned by the reverse current and causing the inability to continue charging, and reduce the risk of excessive current damaging the charging pile and the vehicle controller.

[0018] The second aspect of the present application provides a vehicle, the vehicle comprising a vehicle body, a vehicle controller, a battery and a charging socket, the charging socket being the charging socket described above. The charging socket is connected to the vehicle controller and the battery, and is also used to connect to a charging pile, so that the battery is charged through the charging socket, and the charging process is controlled by the vehicle controller.

[0019] In an embodiment of the present application, a current limiting device is provided between the negative auxiliary terminal and the ground terminal of the vehicle's charging socket, which can limit the reverse current on the auxiliary circuit of the charging socket and reduce the risk of the path between the negative auxiliary terminal and the ground terminal being burned by the reverse current, resulting in the inability to continue charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a charging socket provided in this application in a specific embodiment;

[0021] Figure 2 A schematic diagram of an auxiliary power supply, a charging socket and a vehicle controller of a charging pile in a specific embodiment;

[0022] Figure 3 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0023] Figure 4 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0024] Figure 5 This is a schematic structural diagram of a circuit board of a charging socket provided in the present application in a specific embodiment;

[0025] Figure 6 A circuit schematic diagram of a charging socket provided in this application in a specific embodiment;

[0026] Figure 7 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0027] Figure 8 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0028] Fig. 9 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0029] Fig.10 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0030] Fig.11 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0031] Fig.12 A schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment;

[0032] Fig.13 The schematic diagram is a schematic diagram of an auxiliary power supply of a charging pile, a charging socket and a vehicle controller in another specific embodiment.

[0033] Reference numerals:

[0034] 1- Charging socket;

[0035] 11- housing;

[0036] 12- Circuit board;

[0037] 121-Plate body;

[0038] 122-First gap;

[0039] 123 - second gap;

[0040] 124- positive auxiliary terminal;

[0041] 125-negative auxiliary terminal;

[0042] 126a- positive electrode connection terminal;

[0043] 126b- negative electrode connection terminal;

[0044] 127- ground terminal;

[0045] 13- Current limiting device;

[0046] 131 - resistor;

[0047] 132-electronic fuse;

[0048] 133-diode;

[0049] 14-DC positive plug;

[0050] 15-DC negative plug;

[0051] 16-Positive auxiliary plug;

[0052] 17-Negative auxiliary plug;

[0053] 18- Grounding plug;

[0054] 19-Connection plug;

[0055] 2-Charging pile;

[0056] 3- Vehicle controller;

[0057] 31- protection device;

[0058] 4- Fuse.

[0059] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0060] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0061] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0062] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0063] The charging socket is used to connect the charging pile and the vehicle's battery and other electrical devices, and transmit the electric energy of the charging pile to the vehicle through the charging socket.

[0064] like Figure 1 As shown, Figure 1 The present invention is a schematic diagram of the structure of the charging socket provided in a specific embodiment. The charging socket includes a housing 11, and a DC positive plug 14 and a DC negative plug 15 are provided on the housing 11. The DC positive plug 14 is used to electrically connect the positive pole of the charging pile and the positive pole of the battery of the vehicle, and the DC negative plug 15 is used to electrically connect the negative pole of the charging pile and the negative pole of the battery of the vehicle. When the passages of the charging pile, the DC positive plug 14, the DC negative plug 15, and the battery of the vehicle are connected, the battery of the vehicle can be charged through the charging pile. The housing 11 of the charging socket is also provided with a positive auxiliary plug 16, a negative auxiliary plug 17, and a connection plug 19, wherein the connection plug 19 on the housing 11 is used to connect to the vehicle controller of the vehicle, the positive auxiliary plug 16 is used to connect to the positive pole of the auxiliary power supply of the charging pile, the negative auxiliary plug 17 is used to connect to the negative pole of the auxiliary power supply of the charging pile, and the grounding plug 18 is used for grounding.

[0065] The interface of the charging socket may be a standard interface, for example, a standard interface that meets GB / T 20234.3-2015.

[0066] Specifically, Figure 2 As shown, Figure 2 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in a specific embodiment. The charging socket 1 includes a circuit board, which is provided with at least a positive auxiliary terminal 124, a negative auxiliary terminal 125, a positive connection terminal 126a and a negative connection terminal 126b, wherein the positive auxiliary terminal 124 is connected to the positive auxiliary plug 16 provided on the housing 11, the negative auxiliary terminal 125 is connected to the negative auxiliary plug 17 provided on the housing 11, the positive connection terminal 126a and the negative connection terminal 126b are both connected to the connection plug 19, and the grounding terminal 127 is connected to the grounding plug 18. The positive auxiliary terminal of the charging socket 1 is used to connect to the positive pole A+ of the auxiliary power supply of the charging pile 2 through the above-mentioned positive auxiliary plug 16, and the negative auxiliary terminal 125 is used to connect to the negative pole A- of the auxiliary power supply of the charging pile 2 through the above-mentioned negative auxiliary terminal. The positive connection terminal 126a is connected to the A+ of the vehicle controller 3 of the vehicle through the above-mentioned connection plug, and the negative connection terminal 126b is connected to the A- of the vehicle controller 3 of the vehicle through the above-mentioned connection plug, forming an auxiliary circuit of the charging pile 2, the charging socket 1 and the vehicle controller 3.

[0067] like Figure 2 As shown, in normal operation, the auxiliary power supply of the charging pile 2, the positive auxiliary plug 16, the negative auxiliary plug 17, and the auxiliary path of the vehicle controller 3 of the vehicle are turned on, and the electrical signal flows from the positive pole A+ of the auxiliary power supply of the charging pile 2 to the positive auxiliary terminal 124 of the charging socket 1, from the positive connection terminal 126a of the charging socket 1 to the positive pole A+ of the vehicle controller 3, from the negative pole A- of the vehicle controller to the negative connection terminal 126b of the charging socket, and from the negative auxiliary terminal 125 of the charging socket 1 to the negative pole A- of the auxiliary power supply of the charging pile 2, so that the auxiliary power supply can supply power to the vehicle controller 3 and send a signal to the vehicle controller 3. Under the control of the signal and other control signals, the vehicle controller 3 can control the vehicle to start charging, that is, the charging pile, the DC positive plug of the charging socket, the DC negative plug of the charging socket, and the path of the battery of the vehicle are turned on, and the battery of the vehicle can be charged through the charging pile. At this time, the current in the auxiliary circuit is a positive current.

[0068] When improper charging occurs (for example, the positive and negative poles of the charging pile 2 are connected in reverse) or other faults occur, the above-mentioned auxiliary circuit generates a reverse current. The reverse current flows from the negative pole A- of the auxiliary power supply of the charging pile 2 to the negative auxiliary terminal 125 of the charging socket 1, from the negative connection terminal 126b of the charging socket 1 to the negative pole A- of the vehicle controller 3, from the negative pole A- of the vehicle controller 3 to the ground terminal GND of the vehicle, and from the ground terminal GND to the ground terminal 127 of the charging socket 1, and from the ground terminal 127 back to the ground terminal PE of the charging pile 2, that is, the direction of the reverse current is opposite to the forward current during normal operation. The reverse current in the auxiliary circuit will cause the auxiliary circuit to burn, affecting normal charging, and there is a risk that the reverse current will enter the vehicle controller 3 and the charging pile 2, which may cause damage to the vehicle controller 3 and the charging pile 2.

[0069] In order to solve this technical problem, one way is as follows Figure 3 As shown, Figure 3 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. A fuse 4 is connected in series to the auxiliary circuit. When there is a reverse current in the auxiliary circuit, the fuse 4 burns out to cut off the flow path of the reverse current, reducing the risk of reverse current flowing to the charging pile 2 and the vehicle controller 3 and causing damage. However, this method causes the auxiliary circuit to be disconnected, and charging cannot continue. It needs to be repaired before charging can continue, and the maintenance cost is high.

[0070] Another way to solve the above technical problems is as follows Figure 4 As shown, Figure 4 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. In this embodiment, a protective device 31 is connected in series to the negative pole A-loop of the vehicle controller 3. The protective device 31 can reduce the current on the A-loop of the vehicle controller 3, thereby reducing the risk of reverse current damaging the charging pile 2 and the vehicle controller 3, and will not disconnect the auxiliary loop, so that the charging pile can continue to charge. However, this embodiment requires the provision of a protective device 31 in the vehicle controller 3 of the vehicle, which greatly increases the cost of the vehicle.

[0071] In order to solve the above technical problems, an embodiment of the present application provides a charging socket, which reduces the reverse current in the auxiliary circuit by adding a current limiting device in the auxiliary circuit of the charging socket, thereby reducing the risk of burning the auxiliary circuit and burning the charging pile and the vehicle controller when a reverse current is generated in the auxiliary circuit.

[0072] In a specific embodiment, the charging socket includes a housing and a circuit board located in the housing, wherein the housing of the charging socket can be Figure 1 The housing in the embodiment shown. Figure 5This is a schematic diagram of the structure of the circuit board of the charging socket provided in this application in a specific embodiment. Figure 5 As shown, the circuit board 12 includes a board body 121 , and the board body 121 may be a printed circuit board (PCB).

[0073] exist Figure 5 In the embodiment shown, the plate body 121 may be provided with a first notch 122 and a second notch 123. Figure 1 The first notch 122 is used to avoid the positive plug 14 set in the housing 11 of the charging socket, and the second notch 123 is used to avoid the negative plug 15 set in the housing 11 of the charging socket, so that the positive plug 14 and the negative plug 15 can extend along the thickness direction of the charging socket 1 to connect with the charging pile 2. The plate body 121 can also be provided with other notches to avoid other components in the housing 11 of the charging socket 1.

[0074] In a specific embodiment, the housing 11 includes a panel, and the positive plug 14, the negative plug 15, the positive auxiliary plug 16, the negative auxiliary plug 17, the grounding plug 18 and the connection plug 19 are all led out of the panel. When the interface of the panel is a symmetrical interface, that is, the positive plug 14 and the negative plug 15 are symmetrical about the center line of the charging socket, the positive auxiliary plug 16 and the negative auxiliary plug 17, the circuit board 12 is a symmetrical structure, that is, the circuit board 12 is a structure symmetrical about the center line of the panel to adapt to the standard interface.

[0075] The present application does not limit the shape and size of the board body 121 of the circuit board 12 , as long as it can be installed in the housing 11 of the charging socket 1 .

[0076] In a specific embodiment, Figure 5 As shown, the plate body 121 is provided with a positive auxiliary terminal 124, a negative auxiliary terminal 125, a positive connection terminal 126a, a negative connection terminal 126b and a ground terminal 127. Figure 6 As shown, Figure 6 The circuit schematic diagram of the charging socket provided in this application in a specific embodiment. The positive auxiliary terminal 124 is electrically connected or signal-connected to the positive connection terminal 126a, the negative auxiliary terminal 125 is electrically connected or signal-connected to the negative connection terminal 126b, and the positive auxiliary terminal 124, the positive connection terminal 126a, the negative auxiliary terminal 125 and the negative connection terminal 126b are connected to form an auxiliary circuit. When the charging socket 1 is in a normal working state, the current of the auxiliary circuit flows from the positive auxiliary terminal 124 to the positive connection terminal 126a, and from the negative connection terminal 126b to the negative auxiliary terminal 125, and the current is a positive current.

[0077] like Figure 7 As shown, Figure 7 FIG. 1 is a schematic diagram of the auxiliary power supply of the charging pile, the charging socket and the vehicle controller in another specific embodiment. When working normally, the forward current of the auxiliary power supply of the charging pile, the charging socket and the vehicle controller is as follows: Figure 2 The embodiments shown are described in detail and will not be described here. When there is an abnormality in the auxiliary power supply, charging socket and vehicle controller of the charging pile, resulting in a reverse current in the auxiliary circuit, the reverse current flows from the negative electrode A- of the auxiliary power supply of the charging pile 2 to the negative auxiliary terminal 125 of the charging socket 1, from the negative auxiliary terminal 125 of the charging socket 1 to the negative electrode A- of the vehicle controller 3, from the negative electrode A- of the vehicle controller 3 to the ground terminal GND of the vehicle, and from the ground terminal GND to the ground terminal 127 of the charging socket 1, and from the ground terminal 127 back to the ground terminal PE of the charging pile 2.

[0078] like Figure 5-7 As shown, a current limiting device 13 is also provided on the auxiliary circuit of the circuit board 12 of the charging socket. The current limiting device 13 is used to limit the reverse current on the auxiliary circuit, that is, to reduce or eliminate the reverse current on the auxiliary circuit, so that the reverse current is within a safe range, and the risk of the auxiliary circuit being burned due to the reverse current, resulting in the inability to continue charging, can be reduced. At the same time, the risk of the reverse current entering the charging pile and the vehicle controller causing damage to the charging pile and the vehicle controller can be reduced. At the same time, when the current limiting device 13 is integrated on the circuit board 12 of the charging socket, there is no need to set a protective device on the vehicle, which can reduce costs while playing a protective role.

[0079] In a specific embodiment, Figure 7 As shown, the current limiting device 13 is located at least between the negative auxiliary terminal 125 and the ground terminal 127 of the circuit board of the charging socket. The negative auxiliary terminal 125 and the ground terminal 127 are connected to form the A-loop of the charging socket. The current limiting device 13 is arranged on the A-loop, so as to limit the reverse current on the A-loop.

[0080] Among them, Figure 5 As shown, the distance between the current limiting device 13 and the negative auxiliary terminal 125 is smaller than the distance between the current limiting device 13 and the connecting terminal 127, that is, the current limiting device 13 is closer to the negative auxiliary terminal 125, so that the path of the reverse current flowing from the negative auxiliary terminal 125 to the current limiting device 13 is shorter, thereby being able to quickly reduce or block the reverse current in the auxiliary circuit.

[0081] In a specific embodiment, Figure 7As shown, the current limiting device 13 disposed between the negative auxiliary terminal 125 and the connection terminal 127 may be a first current limiting device, and the first current limiting device is configured to reduce the current on the auxiliary circuit. The first current limiting device may be a resistor. For example, the first current limiting device may be a resistor or an electronic fuse. Among them, the electronic fuse is a circuit protection device that can cut off the circuit when an overcurrent occurs in the circuit, and when the current in the circuit returns to normal, the electronic fuse can automatically recover and make the circuit conductive again.

[0082] like Figure 7 In the embodiment shown, when working normally, the first current limiting device can reduce the forward current on the auxiliary circuit. Since the vehicle controller 3 receives the signal of the charging pile 2 through the charging socket 1, when the auxiliary circuit is turned on, the vehicle controller 3 can receive the signal. Therefore, the first current limiting device does not affect the signal transmission during normal operation. When there is a reverse current in the auxiliary circuit, the first current limiting device can reduce the reverse current between the negative auxiliary terminal 125 and the ground terminal 127, reduce the risk of the reverse current burning the auxiliary circuit, and reduce the risk of the reverse current damaging the charging pile 2 and the vehicle controller 3.

[0083] In addition, when the first current limiting device is an electronic fuse, and the charging pile generates a reverse current in the auxiliary circuit due to a fault (for example, the positive and negative poles of the charging pile are reversely connected), the reverse current in the auxiliary circuit disconnects the electronic fuse, thereby disconnecting the auxiliary circuit and cutting off the flow path of the reverse current. After the fault is repaired and eliminated, the electronic fuse can automatically resume conduction, thereby automatically restoring conduction in the auxiliary circuit without replacing the first current limiting device on the charging socket, further reducing costs.

[0084] In a specific embodiment, the charging socket may include two or more first current limiting devices, and the two or more first current limiting devices may be connected in series or in parallel.

[0085] like Figure 8 As shown, Figure 8 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. In this embodiment, the charging socket may include two current limiting devices, and the two current limiting devices are arranged in series between the negative auxiliary terminal 125 and the ground terminal 127. Among them, the two current limiting devices may include a resistor 131 and an electronic fuse 132, or the two current limiting devices may be two resistors, or the two current limiting devices may also be two electronic fuses. When multiple current limiting devices are connected in series, even if one or more current limiting devices are damaged, the other current limiting devices can still play a role in limiting the reverse current, thereby improving the reliability of limiting the reverse current.

[0086] like Fig. 9 As shown, Fig. 9The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. Fig. 9 In the illustrated embodiment, the charging socket may include two current limiting devices, and the two current limiting devices are arranged in parallel between the negative auxiliary terminal 125 and the ground terminal 127. The two current limiting devices may include a resistor 131 and an electronic fuse 132, or the two current limiting devices may be two resistors, or the two current limiting devices may also be two electronic fuses. When multiple current limiting devices are connected in parallel, even if one or more of the current limiting devices are disconnected, the other current limiting devices that are not disconnected can still conduct the auxiliary circuit, so that the signal of the charging pile can be transmitted to the vehicle controller, and charging can be performed normally.

[0087] In another specific embodiment, Fig.10 As shown, Fig.10 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. The current limiting device 13 disposed between the negative auxiliary terminal 125 and the ground terminal 127 may be a second current limiting device, which is configured to block the current on the auxiliary circuit. The second current limiting device may be a diode 133, which has a reverse cutoff effect, that is, it can allow the forward current to pass normally, but the reverse current cannot pass.

[0088] like Fig.10 In the illustrated embodiment, when the charging pile works normally, the forward current of the auxiliary circuit can pass through the diode 133 normally, so that the signal of the charging pile 2 can be transmitted to the vehicle controller 3 through the diode 133. When there is a reverse current in the auxiliary circuit, the diode 133 in the auxiliary circuit can block the reverse current from passing, that is, the reverse current cannot flow from the negative auxiliary terminal 125 to the ground terminal 127, thereby preventing the reverse current from burning the auxiliary circuit and preventing the reverse current from damaging the charging pile 2 and the vehicle controller 3.

[0089] In a specific embodiment, the charging socket may include two or more current limiting devices, and the two or more current limiting devices may be connected in series or in parallel. The charging socket may include one or more first current limiting devices, and may also include one or more second current limiting devices, so that the one or more first current limiting devices and the one or more second current limiting devices are connected in series, or the one or more first current limiting devices and the one or more second current limiting devices are connected in parallel.

[0090] like Fig.11 As shown, Fig.11The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. In this embodiment, the charging socket may include a first current limiting device and a second current limiting device, and the first current limiting device and the second current limiting device are arranged in series between the negative auxiliary terminal 125 and the ground terminal 127. Among them, the two current limiting devices may include an electronic fuse 132 and a diode 133, or the two current limiting devices may include a resistor and a diode, or the two current limiting devices may include a resistor, an electronic fuse and a diode, that is, the current limiting device in this embodiment may include a resistor and / or an electronic fuse and a diode. When the resistor and / or the electronic fuse and the diode are connected in series, not only can the current on the auxiliary circuit be reduced by the resistor and / or the electronic fuse, but also the reverse current on the auxiliary circuit can be blocked by the diode 133. Even if some current limiting devices are damaged, other current limiting devices can still play a role in limiting the reverse current, thereby improving the reliability of limiting the reverse current.

[0091] like Fig.12 As shown, Fig.12 The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. Fig.12 In the illustrated embodiment, the charging socket may include at least one first current limiting device and at least one second current limiting device, and the at least one first current limiting device and the at least one second current limiting device are arranged in parallel between the negative auxiliary terminal 125 and the ground terminal 127. Among them, the two current limiting devices may include an electronic fuse 132 and a diode 133, or the two current limiting devices may include a resistor and a diode, or the two current limiting devices may include a resistor, an electronic fuse and a diode, that is, the current limiting device in this embodiment may include a resistor and / or an electronic fuse and a diode. When the resistor and / or the electronic fuse and the diode are connected in series, not only can the current on the auxiliary circuit be reduced by the resistor and / or the electronic fuse, but also the reverse current on the auxiliary circuit can be blocked by the diode 133. When multiple current limiting devices are connected in parallel, even if one or more of the current limiting devices are disconnected, the other current limiting devices that are not disconnected can still conduct the auxiliary circuit, so that the signal of the charging pile can be transmitted to the vehicle controller and can be charged normally.

[0092] In another specific embodiment, Fig.13 As shown, Fig.13The schematic diagram of the auxiliary power supply, charging socket and vehicle controller of the charging pile in another specific embodiment. In this embodiment, a current limiting device 13 can be provided between the positive auxiliary terminal 124 and the positive connection terminal 126a, and between the negative auxiliary terminal 125 and the ground terminal 127 of the charging socket 1. The current limiting device 13 provided between the positive auxiliary terminal 124 and the positive connection terminal 126a is used to reduce the current between the positive auxiliary terminal 124 and the positive connection terminal 126a, and the current limiting device 13 provided between the negative auxiliary terminal 125 and the ground terminal 127 is used to reduce the current between the negative auxiliary terminal 125 and the ground terminal 127, thereby further limiting the current on the auxiliary circuit of the charging socket 1.

[0093] In another specific embodiment, when the charging socket is a wire-type structure, that is, the housing of the charging socket includes a first connection plug and a second connection end, the first connection end is used to connect to the auxiliary power supply of the charging pile, the second connection end is used to connect to the vehicle controller of the vehicle, and the first connection end and the second connection end are electrically connected through a wire. A current limiting device is connected between the first connection end and the second connection end, and the current limiting device is used to limit the reverse current between the first connection end and the second connection end.

[0094] The current limiting device may be the current limiting device described in any of the above embodiments.

[0095] The embodiment of the present application also provides a vehicle, which includes a vehicle body, a vehicle controller, a battery and a charging socket, and the charging socket can be the charging socket described in any of the above embodiments. The charging socket is connected to the vehicle controller and the battery, and is also used to connect to the charging pile, so that the battery is charged through the charging socket, and the charging process is controlled by the vehicle controller.

[0096] In an embodiment of the present application, a current limiting device is provided between the negative auxiliary terminal and the ground terminal of the vehicle's charging socket, which can limit the reverse current on the auxiliary circuit of the charging socket and reduce the risk of the path between the negative auxiliary terminal and the ground terminal being burned by the reverse current, resulting in the inability to continue charging.

[0097] It should be noted that the charging socket described in the embodiments of the present application can be used not only in the field of vehicle charging, but also in any field requiring circuit switching.

[0098] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. Charging socket, characterized in that: The charging socket comprises: case; A circuit board, the circuit board is installed in the housing, the circuit board has a positive auxiliary terminal, a negative auxiliary terminal and a ground terminal; Wherein, the circuit board further comprises a current limiting device, and the current limiting device is at least located on the path between the negative auxiliary terminal and the ground terminal.

2. The charging socket according to claim 1, characterized in that: The current limiting device includes at least a first current limiting device configured to reduce a current between the negative auxiliary terminal and the ground terminal.

3. The charging socket according to claim 2, characterized in that: The first current limiting device includes a resistor and / or an electronic fuse.

4. The charging socket according to claim 1, characterized in that: The current limiting device includes at least a second current limiting device configured to block a current from the negative auxiliary terminal to the ground terminal.

5. The charging socket according to claim 4, characterized in that: The second current limiting device includes a diode.

6. The charging socket according to any one of claims 1 to 5, characterized in that: The circuit board includes two or more current limiting devices, and the two or more current limiting devices are connected in series and / or in parallel.

7. The charging socket according to any one of claims 1 to 5, characterized in that: The distance between the current limiting device and the negative auxiliary terminal is smaller than the distance between the current limiting device and the ground terminal.

8. The charging socket according to any one of claims 1 to 5, characterized in that: The housing includes a panel having a positive plug and a negative plug; The circuit board has a board body, and the board body is provided with a first notch and a second notch, wherein the first notch is used to avoid the positive plug, and the second notch is used to avoid the negative plug.

9. The charging socket according to any one of claims 1 to 5, characterized in that: The housing includes a panel, and the circuit board is a symmetrical structure with respect to a center line of the panel.

10. A vehicle, characterized in that The vehicle comprises: Vehicle body; Vehicle controller; A charging socket, wherein the charging socket is the charging socket according to any one of claims 1 to 9; Wherein, the positive auxiliary terminal and the negative auxiliary terminal are both connected to the vehicle controller.

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