Charging switching device, charging detection device, charging equipment and vehicle

Abstract

The utility model discloses a charging switching device, a charging detection device, charging equipment and a vehicle. The charging switching device comprises a charging switching device body; the input end and the output end are arranged on the charging switching device body, the input end is used for being connected with a direct current charger, and the output end is used for being connected with a vehicle; wherein the charging switching device body comprises a charging controller and a detection circuit connected with the charging controller; wherein the detection circuit comprises a detection point, the charging controller is connected to the detection point, and the connection state of the direct current charger and the vehicle is detected through the detection point. The device does not need to respectively set voltage detection points for the charger and the electric automobile, and the loop is simple.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more specifically to a charging adapter, a charging detection device, a charging device and a vehicle. Background Art

[0002] With the booming development of new energy vehicles and new energy facilities, subsidies are gradually leaning towards charging facility companies, especially local governments and social resources are vigorously developing public charging. On the one hand, since charging piles generally use AC and DC integrated charging ports, electric vehicles generally use AC and DC split charging ports; on the other hand, since charging piles use power line carrier (Power Line Communication, PLC) communication, and electric vehicles use controller area network (Controller Area Network, CAN) communication, therefore, charging piles cannot directly charge electric vehicles, which greatly restricts the sales market of electric vehicles.

[0003] In order to ensure that electric vehicles can be charged on DC charging piles and to ensure the compatibility of electric vehicle charging, many companies have adopted adapter solutions, which enable DC charging piles to charge electric vehicles with DC power. In the prior art, detection points are set between the charging pile and the adapter, and between the vehicle and the adapter, and the detection points are used to determine whether the charging pile and the vehicle are reliably connected. However, when one of the detection points is abnormal, the entire circuit is abnormal, so the connection reliability of the adapter is low and the user experience is poor. Summary of the invention

[0004] The present application is proposed to solve the above problems. According to one aspect of the present application, a charging adapter is provided, the device comprising: a charging adapter body; an input terminal and an output terminal arranged on the charging adapter body, the input terminal is used to connect a DC charger, and the output terminal is used to connect a vehicle; wherein the charging adapter body comprises: a charging controller and a detection circuit connected to the charging controller; wherein the detection circuit comprises a detection point, the charging controller is connected to the detection point, and the connection status between the DC charger and the vehicle is detected through the detection point.

[0005] In one embodiment of the present application, the detection circuit also includes: a first resistor, a first end of the first resistor is connected to the voltage end; a second resistor, a second end of the second resistor is connected to the output end; a control switch, a first end of the control switch is connected to the second end of the first resistor, and a second end of the control switch is connected to the first end of the second resistor; wherein the detection point is located between the first resistor and the control switch.

[0006] In one embodiment of the present application, the device further includes a switching circuit and an auxiliary power supply, wherein: the switching circuit is connected to the charging controller; and the auxiliary power supply is connected to the switching circuit.

[0007] In one embodiment of the present application, the device further includes a DC contactor, which is connected to the switch circuit.

[0008] In one embodiment of the present application, the switching circuit includes a first switch and a second switch, wherein: the first end of the first switch and the first end of the second switch are connected to the auxiliary power supply; the second end of the first switch and the second end of the second switch are connected to the DC contactor.

[0009] In one embodiment of the present application, the device further includes a pulse width modulation circuit, and the pulse width modulation circuit is connected to the DC contactor.

[0010] In one embodiment of the present application, the pulse width modulation circuit includes: a diode, a third switch, a third resistor and a fourth resistor, wherein: the positive electrode of the diode is connected to the DC contactor; the negative electrode of the diode is connected to the first end of the third resistor and the first end of the third switch; the second end of the third switch is connected to the first end of the fourth resistor; the second end of the third resistor and the second end of the fourth resistor are connected to the ground terminal.

[0011] In one embodiment of the present application, the device further comprises an indicator light connected to the charging controller, and the on and off state of the indicator light indicates the connection state between the DC charger and the vehicle.

[0012] In one embodiment of the present application, the indicator light includes a first indicator light and a second indicator light, wherein: the on and off status of the first indicator light indicates the connection relationship between the charging adapter and the DC charger; the on and off status of the second indicator light indicates the connection relationship between the charging adapter and the vehicle.

[0013] According to another aspect of the present application, a charging detection device is provided, characterized in that the device includes: a detection circuit, a voltage detection module and a judgment module, wherein the detection circuit includes a detection point; the voltage detection module is connected to the detection point of the detection circuit, and is used to detect the voltage value of the detection point; the judgment module is connected to the voltage detection module, and is used to determine the connection status of the vehicle and the DC charger according to the voltage value.

[0014] In one embodiment of the present application, the detection circuit also includes: a first resistor, a first end of the first resistor is connected to a voltage end; a second resistor, a second end of the second resistor is connected to an output end; a control switch, a first end of the control switch is connected to the second end of the first resistor, and a second end of the control switch is connected to the first end of the second resistor; wherein the detection point is located between the first resistor and the control switch.

[0015] In one embodiment of the present application, the judgment module is used to: when the voltage value is 12V, determine the connection status as: the vehicle is not connected and the DC charger is not connected; when the voltage value is 4V, determine the connection status as: the vehicle is not connected and the DC charger is connected; when the voltage value is 6V, determine the connection status as: the vehicle is connected and the DC charger is not connected; when the voltage value is 3V, determine the connection status as: the vehicle is connected and the DC charger is connected.

[0016] In one embodiment of the present application, the resistance of the first resistor is 3KΩ.

[0017] In one embodiment of the present application, the resistance of the second resistor is 2KΩ.

[0018] According to another aspect of the present application, a charging device is provided, and the charging device includes the above-mentioned charging adapter device or charging detection device.

[0019] According to another aspect of the present application, a vehicle is provided, the vehicle comprising the above-mentioned charging adapter or charging detection device.

[0020] The charging adapter, charging detection device, charging equipment and vehicle of the present application design the detection circuits of the electric vehicle, the charger and the charging adapter into the same circuit, simplifying the voltage detection point in the detection circuit into one voltage detection point. There is no need to set voltage detection points for the charger and the electric vehicle respectively, and the circuit is simple, thereby realizing connection confirmation of the electric vehicle, the charger and the charging adapter, improving connection reliability, reducing costs, and providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0022] Figure 1An exemplary schematic diagram of a charging adapter according to an embodiment of the present application is shown.

[0023] Figure 2 An exemplary schematic diagram of a detection circuit for detecting whether a vehicle is connected to a charger according to an embodiment of the present application is shown.

[0024] Figure 3 An exemplary schematic diagram of another charging adapter according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more obvious, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0026] Next, we will refer to Figure 1 To describe the charging adapter according to an embodiment of the present application. Figure 1 FIG. 1 shows an exemplary schematic diagram of a charging adapter 100 according to an embodiment of the present application. Figure 1 As shown, the charging adapter 100 includes: a charging adapter body 110; an input terminal 120 and an output terminal 130 arranged on the charging adapter body 110, the input terminal 120 is used to connect to a DC charger, and the output terminal 130 is used to connect to a vehicle; wherein, the charging adapter body 110 includes: a charging controller 111 and a detection circuit 112 connected to the charging controller 111; wherein, the detection circuit 112 includes a detection point, the charging controller 111 is connected to the detection point, and the connection status between the DC charger and the vehicle is detected through the detection point.

[0027] Therefore, the charging adapter according to the embodiment of the present application designs the detection circuits of the electric vehicle, the charger and the charging adapter into the same circuit, simplifies the voltage detection point in the detection circuit into one voltage detection point, and does not need to set voltage detection points for the charger and the electric vehicle respectively. The circuit is simple, thereby realizing connection confirmation between the electric vehicle, the charger and the charging adapter, improving connection reliability, reducing costs, and providing a better user experience.

[0028] In an embodiment of the present application, the charging adapter 100 includes a charging adapter body 110, and the charging adapter body 110 includes a charging controller 111 and a detection circuit 112 connected to the charging controller 111; wherein the detection circuit 112 includes: a first resistor R, the first end of the first resistor R is connected to the voltage end; a second resistor R1, the second end of the second resistor R1 is connected to the output end 130; a control switch S, the first end of the control switch S is connected to the second end of the first resistor R, and the second end of the control switch S is connected to the first end of the second resistor R1; wherein a detection point is included between the first resistor R and the control switch S, the charging controller 111 is connected to the detection point, and the connection status of the DC charger and the vehicle is detected through the detection point. Specifically, the voltage detection of the detection point between the first resistor R and the control switch S in the detection circuit 112 can be realized by the charging controller 111, and the connection status of the DC charger and the vehicle with the charging adapter can be identified by the voltage detection at this point. Preferably, the voltage value of the pull-up voltage U is 12V, the resistance value of the first resistor R is 3KΩ, the resistance value of the second resistor R1 is 2KΩ, and the control switch S is used as a state indicator of the physical lock bar of the electronic lock. The voltage value and the resistance value can of course be other suitable values, and no specific limitation is made to this. The pull-up voltage U, the first resistor R, the second resistor R1 and the control switch S can be replaced by other forms or combinations.

[0029] It is worth mentioning that the charging interfaces of the DC charger and the vehicle can be different types of interfaces. For example, if the DC charger is a European standard DC charger, and the vehicle is a national standard vehicle such as a GB / T electric vehicle, the charging interface of the national standard vehicle is also a national standard charging interface.

[0030] In this embodiment, the following is combined Figure 2 To describe the detection point in the detection circuit that detects the connection between the vehicle and the DC charger. Figure 2 As shown, the output port of the DC charger, the charging adapter, and the charging port of the vehicle are designed as the same circuit, and the input port of the charging adapter is connected to the output port of the DC charger (that is, the resistor R in the charger in the figure). C One end of the charging adapter is connected to the input port of the charging adapter), and the output end of the charging adapter port is connected to the charging port of the vehicle (that is, the second end of the second resistor R1 in the detection circuit is connected to the resistor R in the vehicle charging port). VOne end of the charging controller 111), wherein the PP end is a charging connection port in the DC charger output port (i.e., the charger socket in the figure), and the CC1 end is a charging connection port in the vehicle charging port (i.e., the vehicle socket in the figure). When the charging controller 111 detects that the voltage at the detection point (i.e., the detection point 3 in the figure) is 12V, it can be determined that the vehicle and the charging adapter 100 are not connected, and the DC charger and the charging adapter 100 are not connected; when the voltage at the detection point is 4V, it can be determined that the vehicle and the charging adapter 100 are not connected, and the DC charger and the charging adapter 100 are reliably connected; when the voltage at the detection point is 6V, it can be determined that the vehicle and the charging adapter 100 are reliably connected, and the DC charger and the charging adapter 100 are not connected; when the voltage at the detection point is 3V, it can be determined that the vehicle and the charging adapter 100 are reliably connected, and the DC charger and the charging adapter 100 are reliably connected.

[0031] In the embodiment of the present application, the charging adapter 100 further includes a switch circuit and an auxiliary power supply, wherein: the switch circuit is connected to the charging controller 111; the auxiliary power supply is connected to the switch circuit. Figure 1 Specifically, the charging controller 111 can control the closing of the switch circuit to provide an auxiliary power supply for the electric vehicle. The auxiliary power supply can be a 12V rechargeable power supply, or other suitable voltage values, which are not specifically limited.

[0032] In the embodiment of the present application, the charging adapter 100 further includes a DC contactor, which is connected to the switch circuit. Figure 1 When the switch circuit is closed, the auxiliary power supply can energize the coil in the DC contactor and close the normally open contact in the DC contactor, so that the vehicle and the DC charger can detect the gun plug signal.

[0033] In an embodiment of the present application, the switch circuit includes a first switch and a second switch, wherein: the first end of the first switch and the first end of the second switch are connected to the auxiliary power supply; the second end of the first switch and the second end of the second switch are connected to the DC contactor. Specifically, when the first switch and the second switch are closed under the action of the charging controller 111, the auxiliary power supply can provide an auxiliary power supply for the electric vehicle body, and can also simultaneously energize the coil in the DC contactor and close the normally open contact in the DC contactor, at which time the vehicle and the DC charger can detect the plug-in signal.

[0034] In this embodiment, when the charging adapter 100 is reliably connected to the DC charger, and the vehicle is not reliably connected to the charging adapter 100, the voltage value of the detection point in the detection circuit 112 is 3V, the switch circuit is not closed, the coil of the DC contactor is not powered, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC contactor are unable to detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 100 is not reliably connected to the DC charger, and the vehicle is reliably connected to the charging adapter 100, the voltage value of the detection point in the detection circuit 112 is not 6V, the switch circuit is not closed, the coil of the DC contactor is not powered, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC contactor are unable to detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 100 is not reliably connected to the DC charger, and the vehicle is not reliably connected to the charging adapter 100, the voltage value of the detection point in the detection circuit 112 is 12V, the switch circuit is not closed, the coil of the DC contactor is not energized, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC charger cannot detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 100 is reliably connected to the DC charger, and the vehicle is reliably connected to the charging adapter 100, the voltage value of the detection point in the detection circuit 112 is 3V, and the switch circuit is closed by the charging controller 111. The closure of the switch circuit enables the auxiliary power supply to provide auxiliary power to the vehicle, so that the DC circuit is turned on, and then the coil of the DC contactor is energized. At this time, the normally open contact of the DC contactor is also closed. After the normally open contact is closed, the vehicle and the DC charger can detect the plug-in signal. Therefore, by adding an additional DC contactor, the detection of the plug-in signal must be performed after the vehicle and the DC charger are reliably connected to the adapter, and the vehicle and the DC charger can be detected, which is convenient for subsequent connection problem confirmation.

[0035] In the embodiment of the present application, the charging adapter 100 further includes a pulse width modulation circuit, and the pulse width modulation circuit is connected to the DC contactor. Figure 1 , but it is not intended to be limiting. The pulse width modulation circuit is mainly used to identify the pulse width modulation (PWM) wave. In this embodiment, the pulse width modulation circuit includes: a diode, a third switch, a third resistor and a fourth resistor, wherein: the positive electrode of the diode is connected to the DC contactor; the negative electrode of the diode is connected to the first end of the third resistor and the first end of the third switch; the second end of the third switch is connected to the first end of the fourth resistor; the second end of the third resistor and the second end of the fourth resistor are connected to the ground terminal.

[0036] In the embodiment of the present application, the charging adapter 100 further includes an indicator light connected to the charging controller 111, and the on and off state of the indicator light indicates the connection state between the DC charger and the vehicle. Figure 1 As shown in the figure, it is not intended to be limiting. When the vehicle and the charging adapter 100 or the DC charger and the charging adapter 100 are not reliably connected, the electric vehicle cannot be charged and the user cannot determine the cause. Therefore, the present application provides a plug indicator light. When it is detected that the vehicle and the charging adapter 100 or the DC charger and the charging adapter 100 are reliably connected, the connection status of the DC charger and the vehicle is indicated to the user by the on and off state of the indicator light.

[0037] In the embodiment of the present application, the indicator light includes a first indicator light and a second indicator light, wherein: the on and off state of the first indicator light indicates the connection relationship between the charging adapter 100 and the DC charger; the on and off state of the second indicator light indicates the connection relationship between the charging adapter 100 and the vehicle. In this embodiment, when the charging adapter 100 recognizes that the DC charger is reliably connected to the charging adapter 100, the charging controller 111 lights up the first indicator light; when the charging adapter 100 does not recognize that the DC charger is reliably connected to the charging adapter 100, the charging controller 111 turns off the first indicator light; when the charging adapter 100 recognizes that the vehicle is reliably connected to the charging adapter 100, the charging controller 111 turns on the second indicator light; when the charging adapter 100 does not recognize that the vehicle is reliably connected to the charging adapter 100, the charging controller 111 turns off the second indicator light. By adding an indicator light to indicate to the user the connection status of the DC charger and the vehicle, the user is convenient to use and has a good experience.

[0038] Therefore, according to the charging adapter of the embodiment of the present application, by designing the detection circuits of the electric vehicle, the charger and the charging adapter as the same circuit, the voltage detection point in the detection circuit is simplified to one voltage detection point, and there is no need to set voltage detection points for the charger and the electric vehicle respectively. The circuit is simple, thereby realizing connection confirmation between the electric vehicle, the charger and the charging adapter, improving connection reliability, reducing costs, and providing a better user experience.

[0039] Combine the following Figure 3 A charging adapter 300 according to another embodiment of the present application is described, which is a more specific structural example diagram of the charging adapter 100 described above. Figure 3As shown, the charging adapter 300 includes a charging controller (i.e., an integrated charging controller), a detection circuit, a switch circuit, a DC contactor, and a pulse width modulation circuit. The detection circuit includes a first resistor R, a control switch S (i.e., switch S), and a second resistor R1. The first end of the first resistor R is connected to the voltage U, the second end of the first resistor is connected to the first end of the switch S, the second end of the switch S is connected to the first end of the second resistor R1, the second end of the second resistor R1 is connected to the output end of the charging adapter 300 and is connected to a charging connection end in the charging port of the vehicle (i.e., connected to the port CC1 end connected to the resistor R4 in the vehicle). There is a unique detection point (detection point 3) between the first resistor R and the switch S. The detection point is connected to the input end of the charging adapter 300 and is connected to the output port of the DC charger (i.e., connected to the resistor R C The PP port connected to the DC charger is connected to the PP port, which is a charging connection port in the DC charger output port. Through the detection point 3, it can be determined whether the DC charger and the vehicle are reliably connected to the charging adapter 300. Among them, the resistor R C It can be 1.5KΩ, the first resistor R can be 3KΩ, the second resistor R1 can be 2KΩ, the resistor R4 in the vehicle can be 1KΩ, and the voltage U can be 12V. Of course, these resistors and voltages can also be other suitable values, which are not specifically limited.

[0040] Specifically, when the integrated charging controller detects that the voltage at detection point 3 is 12V, it can be determined that the vehicle and the charging adapter 300 are not connected, and the DC charger and the charging adapter 300 are not connected; when the integrated charging controller detects that the voltage at detection point 3 is 4V, it can be determined that the vehicle and the charging adapter 300 are not connected, and the DC charger and the charging adapter 300 are reliably connected; when the integrated charging controller detects that the voltage at detection point 3 is 6V, it can be determined that the vehicle and the charging adapter 300 are reliably connected, and the DC charger and the charging adapter 300 are not connected; when the integrated charging controller detects that the voltage at detection point 3 is 3V, it can be determined that the vehicle and the charging adapter 300 are reliably connected, and the DC charger and the charging adapter 300 are reliably connected.

[0041] In this embodiment, the charging adapter 300 also includes a switch circuit (switch K3 and switch K4), an auxiliary power supply, a DC contactor (KM), a pulse width modulation circuit (diode D1, resistor R2, switch S2 and resistor R3), and indicator lights (first indicator light LED1 and second indicator light LED2). Among them, the resistor R2 can be 1.3KΩ, the resistor R3 can be 2.74KΩ, the diode D1 conduction voltage is 0.7V, and these resistors can also be other suitable resistance values, which are not specifically limited. The integrated charging controller is connected to the switch circuit to control the opening and closing of the switch circuit, and the switch circuit is connected to the DC contactor. Specifically, the switch K3 is connected to the auxiliary power supply positive electrode A+, and the switch K4 is connected to the auxiliary power supply negative electrode A-. When the switch circuit is closed, that is, the switch K3 and the switch K4 are closed, a closed loop is generated at this time, and the auxiliary power supply will provide auxiliary power to the electric vehicle. The auxiliary power supply is preferably 12V, and can also be other suitable voltage values. At the same time, the coil in the DC contactor is energized, and the normally open contact in the DC contactor is closed. At this time, the DC charger and the vehicle can detect the plug-in signal.

[0042] Specifically, when the charging adapter 300 is reliably connected to the DC charger, and the vehicle is not reliably connected to the charging adapter 300, the voltage value of the detection point 3 is 3V, the switch circuit is not closed, the coil of the DC contactor is not powered, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC charger cannot detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 300 is not reliably connected to the DC charger, and the vehicle is reliably connected to the charging adapter 300, the voltage value of the detection point 3 is 6V, the switch circuit is not closed, the coil of the DC contactor is not powered, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC charger cannot detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 300 is not reliably connected to the DC charger, and the vehicle is not reliably connected to the charging adapter 300, the voltage value of the detection point 3 is 12V, the switch circuit is not closed, the coil of the DC contactor is not powered, and the normally open contact of the DC contactor is not closed. At this time, the vehicle and the DC charger cannot detect the plug-in signal, and the vehicle cannot be charged. When the charging adapter 300 is reliably connected to the DC charger and the vehicle is reliably connected to the charging adapter 300, the voltage value of the detection point 3 is 3V. The switch circuit is closed by the integrated charging controller. The closing of the switch circuit enables the auxiliary power supply to provide auxiliary power to the vehicle, so that the DC circuit is turned on, and the coil of the DC contactor is energized. At this time, the normally open contact of the DC contactor will also be closed. After the normally open contact is closed, the vehicle and the DC charger can detect the plug-in signal.

[0043] In this embodiment, the DC contactor is connected to a pulse width modulation circuit for identifying a pulse width modulation wave (PWM wave). The input end of the DC contactor is also connected to one end of the resistor R1 in the DC charger (i.e., the output port of the DC charger), and the other end of the resistor R1 in the DC charger is connected to the voltage and inputs the PWM wave. The output end of the DC contactor is also connected to one end of the resistor R5 in the vehicle, and the other end of the resistor R5 is connected to a charging connection port (CC2) in the vehicle charging port. Among them, the resistor R1 in the DC charger can be 1KΩ, the resistor R5 in the vehicle can be 1KΩ, and the resistor can also be other suitable resistance values, which are not specifically limited. The pulse width modulation circuit is also connected to the charging port of the vehicle, and the PWM wave is provided through the output port of the DC charger and transmitted to the pulse width modulation circuit through the DC contactor, and the PWM wave is identified and modulated and output.

[0044] In this embodiment, the integrated charging controller is also connected to the indicator light, which is divided into a first indicator light LED1 and a second indicator light LED2. The first indicator light LED1 is used to display the connection status of the DC charger and the charging adapter 300, and the second indicator light LED2 is used to display the connection status of the vehicle and the charging adapter 300. Specifically, when the charging adapter 300 recognizes that the DC charger is reliably connected to the charging adapter 300, the integrated charging controller lights up LED1; when the charging adapter 300 does not recognize that the DC charger is reliably connected to the charging adapter 300, the integrated charging controller turns off LED1; when the charging adapter 300 recognizes that the vehicle is reliably connected to the charging adapter 300, the integrated charging controller lights up LED2; when the charging adapter 300 does not recognize that the vehicle is reliably connected to the charging adapter 300, the integrated charging controller turns off LED2. By adding an indicator light to indicate to the user the connection status of the DC charger and the vehicle, the user is convenient to use and has a good experience. The integrated charging controller is also connected to the S+ and S- in the vehicle. S+ and S- are the CAN communication interfaces between the charger and the vehicle, which are used to provide handshake signals between the DC charger and the vehicle controller, confirm each other's identities, perform high-voltage insulation and safety tests in the charger, and determine the appropriate charging voltage and current according to the actual remaining power parameters of the power battery to prepare for the start of charging. In addition, switches K1, K2, K5, and K6 in the figure represent the control of the opening and closing of these switches to provide DC power.

[0045] According to an embodiment of the present application, a charging detection device is also provided, the device comprising: a detection circuit, a voltage detection module and a judgment module, wherein the detection circuit comprises a detection point; the voltage detection module is connected to the detection point of the detection circuit, and is used to detect the voltage value of the detection point; the judgment module is connected to the voltage detection module, and is used to determine the connection state of the vehicle and the DC charger according to the voltage value. In this example, when the voltage value is 12V, the connection state is determined to be that the vehicle is not connected and the DC charger is not connected; when the voltage value is 4V, the connection state is determined to be that the vehicle is not connected and the DC charger is connected; when the voltage value is 6V, the connection state is determined to be that the vehicle is connected and the DC charger is not connected; when the voltage value is 3V, the connection state is determined to be that the vehicle is connected and the DC charger is connected.

[0046] Optionally, the voltage detection module and the judgment module may be submodules in the aforementioned charging controller.

[0047] In one embodiment of the present application, the detection circuit further includes: a first resistor, a first end of the first resistor is connected to the voltage end; a second resistor, a second end of the second resistor is connected to the output end; a control switch, a first end of the control switch is connected to the second end of the first resistor, and a second end of the control switch is connected to the first end of the second resistor; wherein the detection point is located between the first resistor and the control switch. In one example, the resistance value of the first resistor is 3KΩ, and the resistance value of the second resistor is 2KΩ. The first resistor and the second resistor can also be other suitable resistance values, which are not specifically limited.

[0048] In addition, according to an embodiment of the present application, a charging device is also provided, which may include the charging adapter 100 or the charging detection device described above.

[0049] In addition, according to an embodiment of the present application, a vehicle is also provided, which may include the charging adapter 100 or the charging detection device described above.

[0050] Based on the above description, the charging adapter, charging detection device, charging equipment and vehicle of the embodiments of the present application design the detection circuits of the electric vehicle, the charger and the charging adapter as the same circuit, simplifying the voltage detection point in the detection circuit to one voltage detection point. There is no need to set voltage detection points for the charger and the electric vehicle respectively, and the circuit is simple, thereby realizing connection confirmation of the electric vehicle, the charger and the charging adapter, improving connection reliability, reducing costs, and providing a better user experience.

[0051] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0052] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0053] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0054] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0055] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0056] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0057] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0058] The various component embodiments of the present application can be implemented in hardware, or implemented in software modules running on one or more processors, or implemented in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all functions of some modules according to the embodiments of the present application. The application can also be implemented as a part or all of a program (e.g., a computer program and a computer program product) for performing the method described herein. Such a program implementing the present application can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0059] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer.

[0060] The above is only a specific implementation or description of a specific implementation of the present application, and the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A charging adapter, characterized in that: The device comprises: Charging adapter body; An input end and an output end are provided on the charging adapter body, the input end is used to connect to a DC charger, and the output end is used to connect to a vehicle; Wherein, the charging adapter body includes: a charging controller and a detection circuit connected to the charging controller; wherein, the detection circuit includes a detection point, the charging controller is connected to the detection point, and the connection status between the DC charger and the vehicle is detected through the detection point.

2. The device according to claim 1, characterized in that The detection circuit also includes: a first resistor, wherein a first end of the first resistor is connected to a voltage end; a second resistor, wherein a second end of the second resistor is connected to the output end; a control switch, wherein a first end of the control switch is connected to a second end of the first resistor, and a second end of the control switch is connected to a first end of the second resistor; Wherein, the detection point is located between the first resistor and the control switch.

3. The device according to claim 2, characterized in that The device also includes a switching circuit and an auxiliary power supply, wherein: The switch circuit is connected to the charging controller; The auxiliary power supply is connected to the switch circuit.

4. The device according to claim 3, characterized in that The device further comprises a DC contactor, which is connected to the switch circuit.

5. The device according to claim 4, characterized in that The switch circuit comprises a first switch and a second switch, wherein: The first end of the first switch and the first end of the second switch are connected to the auxiliary power supply; The second end of the first switch and the second end of the second switch are connected to the DC contactor.

6. The device according to claim 4, characterized in that The device further comprises a pulse width modulation circuit, and the pulse width modulation circuit is connected to the DC contactor.

7. The device according to claim 6, characterized in that The pulse width modulation circuit comprises: a diode, a third switch, a third resistor and a fourth resistor, wherein: The anode of the diode is connected to the DC contactor; The cathode of the diode is connected to the first end of the third resistor and the first end of the third switch; The second end of the third switch is connected to the first end of the fourth resistor; A second end of the third resistor and a second end of the fourth resistor are connected to a ground terminal.

8. The device according to claim 1, characterized in that The device also includes an indicator light connected to the charging controller, and the on and off state of the indicator light indicates the connection state between the DC charger and the vehicle.

9. The device according to claim 8, characterized in that The indicator light comprises a first indicator light and a second indicator light, wherein: The on / off state of the first indicator light indicates the connection relationship between the charging adapter and the DC charger; The on and off status of the second indicator light indicates the connection relationship between the charging adapter and the vehicle.

10. A charging detection device, characterized in that: The device comprises: a detection circuit, a voltage detection module and a judgment module, wherein: The detection circuit includes a detection point; The voltage detection module is connected to the detection point of the detection circuit and is used to detect the voltage value of the detection point; The judgment module is connected to the voltage detection module and is used to determine the connection status between the vehicle and the DC charger according to the voltage value.

11. The device according to claim 10, characterized in that The detection circuit also includes: a first resistor, wherein a first end of the first resistor is connected to a voltage end; a second resistor, wherein a second end of the second resistor is connected to the output end; a control switch, wherein a first end of the control switch is connected to a second end of the first resistor, and a second end of the control switch is connected to a first end of the second resistor; Wherein, the detection point is located between the first resistor and the control switch.

12. The device according to claim 10, characterized in that The judging module is used for: When the voltage value is 12V, the connection state is determined as: the vehicle is not connected, and the DC charger is not connected; When the voltage value is 4V, the connection state is determined as: the vehicle is not connected and the DC charger is connected; When the voltage value is 6V, the connection state is determined as: the vehicle is connected and the DC charger is not connected; When the voltage value is 3V, the connection status is determined as: the vehicle is connected and the DC charger is connected.

13. The device according to claim 11, characterized in that The resistance of the first resistor is 3KΩ.

14. The device according to claim 11, characterized in that The resistance of the second resistor is 2KΩ.

15. A charging device, characterized in that: The charging device includes the charging adapter as described in any one of claims 1-9 or the charging detection device as described in any one of claims 10-14.

16. A vehicle, characterized in that: The vehicle comprises the charging adapter as described in any one of claims 1-9 or the charging detection device as described in any one of claims 10-14.

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