Charging switching device for electric vehicle

Abstract

The invention discloses a charging switching device for an electric vehicle, which comprises a vehicle charging interface, a charger interface, a switch assembly and a control unit, and is characterized in that the vehicle charging interface is used for being connected with the vehicle charging interface, and the charger interface is used for being connected with a charging gun; one end of the switch assembly is connected with the vehicle charging interface, and the other end of the switch assembly is connected with the charger interface; the control unit is connected with the control end of the switch assembly and the charger interface. The control unit is further configured to execute the following steps that a target signal output by the charger interface is received; acquiring reservation charging information based on the target signal; and controlling the switch assembly to be conducted according to the reserved charging information, so that the vehicle charging interface is conducted with the charger interface. According to the invention, for the vehicle type without the reservation charging function, the reservation charging function of the electric vehicle can be realized, so that the interaction between the electric vehicle and the charging gun before charging is monitored and controlled, and the safety and efficiency of subsequent charging are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and more specifically, to a charging adapter for electric vehicles. Background Art

[0002] Recently, environmental and energy issues have increased, and electric vehicles are being developed as future transportation tools to solve these problems. Electric vehicles include pure electric vehicles and plug-in hybrid vehicles, etc. These vehicles require rechargeable batteries for operation, and for this purpose, the batteries can be charged at home or at a charging station. The above-mentioned electric vehicle refers to a vehicle that uses an on-board power supply as a power source, drives the wheels with an electric motor, and meets various requirements of road traffic and safety regulations.

[0003] Electric vehicles have the characteristics of low emissions, and their application can improve environmental pollution and other problems to a certain extent. With the strong support of national policies and the long-term development of automobile companies themselves, more and more automobile companies have invested in the research and production of electric vehicles. More and more electric vehicles are entering the market, and consumers are gradually accepting this product.

[0004] At present, various types of electric vehicles emerge in an endless stream, but the relevant configurations and functions also vary greatly. Some models of existing electric vehicles have adopted the function of supporting scheduled charging, such as realizing the scheduled charging function through the on-board charger and multimedia operating system in the electric vehicle, but some models are not equipped with the scheduled charging function. The fact that some models are not equipped with the scheduled charging function means that these models do not support the owner to set the time for the vehicle to start charging independently. The above-mentioned scheduled charging function allows the owner to pre-set the start time of the charging equipment according to personal needs and fluctuations in electricity prices, so that charging can be carried out during periods with lower electricity prices, thereby saving electricity costs.

[0005] The above-mentioned non-support of scheduled charging service mainly involves whether the on-board charger and the vehicle system support the scheduled charging function. Some models are not equipped with the scheduled charging function, which brings great inconvenience to users and is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0006] In view of this, the present invention provides a charging adapter for electric vehicles to solve the problem that some vehicle models are not equipped with a scheduled charging function.

[0007] The present application provides a charging adapter for an electric vehicle, comprising: a vehicle charging interface, a charger interface, a switch assembly and a control unit, wherein the vehicle charging interface is used to connect to a vehicle charging port, and the charger interface is used to connect to a charging gun;

[0008] One end of the switch assembly is connected to the vehicle charging interface, and the other end of the switch assembly is connected to the charger interface;

[0009] The control unit is connected to the control end of the switch assembly and the charger interface respectively, and the control unit is further configured to perform the following steps:

[0010] Receiving a target signal output by the charger interface;

[0011] acquiring scheduled charging information based on the target signal;

[0012] The switch component is controlled to be turned on according to the reserved charging information, so that the vehicle charging interface is connected to the charger interface.

[0013] Compared with the prior art, the charging adapter for electric vehicles provided by the present invention achieves at least the following beneficial effects:

[0014] The charging adapter device for electric vehicles provided by the present invention includes: a vehicle charging interface, a charger interface, a switch component and a control unit, wherein the vehicle charging interface is used to connect to the vehicle charging port, and the charger interface is used to connect to the charging gun; one end of the switch component is connected to the vehicle charging interface, and the other end of the switch component is connected to the charger interface; the control unit is respectively connected to the control end of the switch component and the charger interface, and the control unit is also configured to perform the following steps: receiving a target signal output by the charger interface; obtaining scheduled charging information based on the target signal; and controlling the switch component to be turned on according to the scheduled charging information, so that the vehicle charging interface is turned on with the charger interface. By adopting the above scheme, the scheduled charging function of the electric vehicle can be realized for the vehicle model that is not equipped with the scheduled charging function, thereby realizing the monitoring and control of the interaction between the electric vehicle and the charging gun before charging, and ensuring the safety and efficiency of subsequent charging.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0016] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 It is a structural schematic diagram of a charging adapter for an electric vehicle provided by the present invention;

[0019] Figure 2 It is a partial circuit diagram of a charging adapter for an electric vehicle provided by the present invention;

[0020] Figure 3 It is a logic block diagram of a charging adapter for electric vehicles provided by the present invention;

[0021] Figure 4 It is a partial circuit diagram of another charging adapter for electric vehicles provided by the present invention;

[0022] Figure 5 It is a partial circuit diagram of another charging adapter for electric vehicles provided by the present invention;

[0023] Figure 6 It is a flow chart of a control method of a charging adapter for an electric vehicle provided by the present invention;

[0024] Figure 7 It is a flow chart of another control method for a charging adapter for an electric vehicle provided by the present invention. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0028] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0029] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] See also Figure 1-Figure 3 As shown, Figure 1 It is a structural schematic diagram of a charging adapter for an electric vehicle provided by the present invention; Figure 2It is a partial circuit diagram of a charging adapter for an electric vehicle provided by the present invention; Figure 2 CC represents a confirmation signal for charging, N represents the neutral line, PE represents the protective grounding, and L represents the live line; Figure 3 This is a logic block diagram of a charging adapter for an electric vehicle provided by the present invention; this embodiment provides a charging adapter for an electric vehicle, including:

[0031] A vehicle charging interface 3, a charger interface 4, a switch assembly 25 and a control unit 24, wherein the vehicle charging interface 3 is used to connect to a vehicle charging port (not shown in the figure), and the charger interface 4 is used to connect to a charging gun (not shown in the figure);

[0032] One end of the switch assembly 25 is connected to the vehicle charging interface 3, and the other end of the switch assembly 25 is connected to the charger interface 4;

[0033] The control unit 24 is connected to the control end of the switch assembly 25 and the charger interface 4 respectively, and the control unit 24 is also configured to perform the following steps:

[0034] Receive a target signal output by the charger interface 4;

[0035] Acquiring scheduled charging information based on the target signal;

[0036] The switch assembly 25 is controlled to be turned on according to the scheduled charging information, so that the vehicle charging interface 3 and the charger interface 4 are turned on.

[0037] The charging adapter for electric vehicles may be a charging adapter for electric vehicles, or a reserved charging adapter for electric vehicles.

[0038] The vehicle charging interface 3 , the charger interface 4 , the switch assembly 25 and the control unit 24 may be arranged on the charging body 1 , and the vehicle charging interface 3 and the charger interface 4 are arranged at opposite ends of the charging body 1 .

[0039] The charging body 1 may be a charging device housing, and the vehicle charging interface 3, the charger interface 4, the switch assembly 25 and the control unit 24 are installed in the charging device housing.

[0040] Optionally, the vehicle charging interface 3, the charging body 1 and the charger interface 4 are an integrated structure. The above solution not only improves the charging efficiency, enhances the safety and facilitates the use and maintenance, but also improves the interoperability between different charging devices.

[0041] The design of the vehicle charging interface 3 allows plugging and unplugging operations while keeping the power on, providing power for various electronic devices in the vehicle. The vehicle charging port is a standard port, and the vehicle charging interface 3 is plugged into the vehicle charging port.

[0042] The charger interface 4 can be an AC charger interface for connecting a charging gun, and the charging gun can be a mode 2 charging gun. The main difference between the mode 2 charging gun and the mode 1 charging gun is that the mode 2 charging gun adds a protective device (such as an adapter), which ensures that the connection between the electric vehicle and the household AC power grid not only maintains the convenience of charging, but also ensures the safety and standardization of charging. The maximum charging current of this mode is not allowed to exceed 32A, and the cable control and protection device are required. The above scheme makes the charging process of the electric vehicle safer and more reliable, and also meets the convenience requirements of home charging. The vehicle charging interface 3 and the charger interface 4 are electrically connected to the control unit 24 to ensure the efficiency and safety of the charging process. The design of the on-board charger is to provide an efficient charging solution for electric vehicles while ensuring the safety and controllability of the charging process. The mode 2 charging gun is a standard interface. The gun head of the charging gun is a standard interface, and the charger interface 4 is plugged into the gun head of the charging gun. The charging gun can also be a mode 3 charging gun with a reservation function. The mode 3 charging gun is not connected to the household AC power grid, but is connected to a dedicated AC power supply device, that is, an AC charging pile.

[0043] One end of the switch component 25 is connected to the vehicle charging interface 3 , and the other end of the switch component 25 is connected to the charger interface 4 , that is, the switch component 25 is used to conduct the vehicle charging interface 3 and the charger interface 4 .

[0044] The control unit 24 is connected to the switch component 25 and the charger interface 4, and is used to receive the target signal output by the charger interface 4, which may be a pilot signal generated by the charging gun, and specifically, may be a PWM signal of a preset voltage, such as a 6V PWM signal; the scheduled charging information is obtained according to the target signal, and the scheduled charging information includes the scheduled timing duration, and the scheduled timing duration includes the start time and the end time of the scheduled charging, and the user can set the specific charging time range according to his or her needs; the switch component 25 is controlled to be turned on according to the scheduled charging information, so that the vehicle charging interface 3 and the charger interface 4 are turned on, and when the scheduled charging information reaches the scheduled charging start time in the scheduled timing duration, the charging gun starts to charge the electric vehicle.

[0045] Among them, the pilot signal generated by the charging gun is transmitted through the pilot communication line 29, and the pilot communication line 29 can be a CP (Communication Protocol) communication line. The CP communication line is mainly used to monitor the interaction between the electric vehicle and the charging gun. It realizes a communication mechanism through PWM (Pulse Width Modulation) and amplitude alternation to ensure the safety and efficiency of the charging process. The CP communication line is not only a signal to control the charging current, but also acts as a "handshake" signal between the charging gun and the electric vehicle, through which the charging current and state are controlled. Specifically, during the charging process of the electric vehicle, the CP communication line sends a signal to the electric vehicle through the communication line between the vehicle charging interface 3 and the electric vehicle to control the charging current of the electric vehicle.

[0046] The control unit 24 may be a controller, and the controller may be a microcontroller, such as an STM32 series microcontroller.

[0047] It should be noted that: since the switch component 25 is electrically connected to the control unit 24, the switch component 25 is also a part of the control unit 24, wherein the switch component 25 is used to connect the vehicle charging interface 3 and the charger interface 4, and the control unit 24 is used to identify the target signal, which can be a 6VPWM signal.

[0048] There are CP communication lines in electric vehicles, charging adapters and charging guns. In the charging process of electric vehicles, CP communication lines play an important role. It is mainly responsible for establishing communication between the charging gun and the vehicle socket to ensure the safety and reliability of the charging process. Specifically, the working principle of the CP communication line is as follows:

[0049] The charging adapter has an integrated CP communication line to communicate with the charging gun and exchange information with the charging gun during the charging process to ensure charging safety and efficiency.

[0050] Electric vehicles: Electric vehicles are also equipped with CP communication lines inside to communicate with the charging gun and exchange information with the charging gun during the charging process to achieve intelligent charging management.

[0051] Charging gun: The charging gun is also equipped with a CP communication line to communicate with the charging adapter and the electric vehicle, and exchange information with the vehicle during the charging process to ensure the safety and efficiency of charging.

[0052] It should be noted that: in this embodiment, the scheduled charging function can be set before or after the gun is plugged in, depending on the actual needs of the user, and this embodiment does not make any specific limitations.

[0053] By adopting the above solution, for models that are not equipped with the scheduled charging function, not only can the scheduled charging function of the electric vehicle be realized, but also the interaction between the electric vehicle and the charging gun can be monitored and controlled before charging, ensuring the safety and efficiency of subsequent charging.

[0054] It should be noted that the electric vehicle includes an OBC (On-Board Charger), which is used to convert the AC power output by the AC charging gun into high-voltage DC power to charge the high-voltage power battery of the vehicle. When the charging gun charges the electric vehicle, there is no need to use the on-board charging device to convert the AC power into DC power. When the charging gun charges the electric vehicle through the on-board charging device, the control unit 24 accesses the AC power of the charging gun, and the AC power of the charging gun charges the electric vehicle, and the OBC in the electric vehicle converts the AC power into DC power.

[0055] In an optional embodiment, controlling the switch component to conduct according to the scheduled charging information includes: determining the scheduled timing duration based on the scheduled charging information and starting timing; when the timing duration reaches the scheduled timing duration, controlling the switch component to conduct.

[0056] In the above scheme, the user controls the charging according to the scheduled time duration in the scheduled charging information. Since the scheduled charging information includes the scheduled time duration, the scheduled time duration includes the start time and end time of the scheduled charging. The user can achieve this by selecting a specific time period, such as the off-peak period from 22:00 to 6:00 the next day, so that charging can be performed during the period with lower electricity charges, and lower electricity charges can be enjoyed, thereby saving charging costs; when the timing duration reaches the start time of the scheduled charging in the scheduled time duration, the switch component is controlled to be turned on, and charging will automatically start. For example, if the user sets the scheduled charging time from 22:00 to 6:00 the next day, and the user sets the charging to start at 22:00, when the scheduled time duration reaches 22:00, the charging gun automatically charges the electric vehicle, and during the period from 22:00 to 6:00 the next day, the control unit controls the switch component to be turned on. With the above scheme, users can flexibly arrange charging time, enjoy lower electricity charges, avoid charging during peak hours, and reduce the pressure on the power grid.

[0057] In an alternative embodiment, in combination Figure 1 and Figure 4 As shown, Figure 4This is a partial circuit diagram of another charging adapter for electric vehicles provided by the present invention. D1 is a presence detection diode, which is used to detect whether the charging adapter for electric vehicles is connected to an electric vehicle or a simulated electric system. In this embodiment, the charging adapter also includes a scheduled charging control button 21, which is connected to the operation panel 22 and the control unit 24 and is used to start the reservation instruction. Among them, the movable end of the scheduled charging control button is electrically connected to the charger interface 4, the first fixed end S1 is electrically connected to the vehicle charging interface 3, and the second fixed end S2 is electrically connected to the control unit 24; when the movable end of the scheduled charging control button is electrically connected to the second fixed end S2, the control unit 24 receives the target signal of the charger interface 4;

[0058] The control unit 24 is electrically connected to the control end of the scheduled charging control button, and the control unit 24 is also configured to perform the following steps: after obtaining the scheduled charging information based on the target signal, the movable end of the scheduled charging control button is electrically connected to the first fixed end S1 and the switch component 25 is turned on according to the scheduled charging information. The movable end of the scheduled charging control button can be a contact that changes state, such as a part that physically moves when the user presses the scheduled charging control button. This movement changes the connection state of the circuit, thereby triggering or canceling the scheduled charging function. The first fixed end and the second fixed end are fixed connection points in the circuit, and the movable end of the scheduled charging control button contacts or separates from them to change the circuit state. The control end of the scheduled charging control button can be a pin for receiving the scheduled charging information; through the mutual cooperation between the movable end of the scheduled charging control button, the first fixed end S1, the second fixed end S2 and the control end of the scheduled charging control button, the scheduled charging information can be obtained, which is conducive to starting the scheduled charging function.

[0059] In an alternative embodiment, in combination Figure 2 As shown, the switch assembly 25 includes a third switch S3 and a fourth switch S4, one end of the third switch S3 is connected to the neutral line of the vehicle charging interface 3, and the other end is connected to the neutral line of the charger interface 4; one end of the fourth switch S4 is connected to the live wire of the vehicle charging interface 3, and the other end is connected to the live wire of the charger interface 4; the third switch S3 and the fourth switch S4 are electrically connected to the control unit 24, and the control unit 24 controls the opening and closing of the third switch S3 and the fourth switch S4; the above scheme is adopted, which is conducive to communication between the electric vehicle and the charging gun, thereby facilitating the charging gun to supply power to the electric vehicle.

[0060] Optionally, the switch assembly 25 includes a third switch S3 and a fourth switch S4, one end of the third switch S3 is used to connect the neutral wire of the vehicle charging port, and the other end thereof is used to connect the neutral wire of the charging gun; one end of the fourth switch S4 is used to connect the live wire of the vehicle charging port, and the other end thereof is used to connect the live wire of the charging gun; the third switch S3 and the fourth switch S4 are electrically connected to the control unit 24, and the control unit 24 controls the opening and closing of the third switch S3 and the fourth switch S4; the above scheme is adopted, which is conducive to communication between the electric vehicle and the charging gun, thereby facilitating the charging gun to supply power to the electric vehicle.

[0061] In the above scheme, the switch assembly 25 includes a third switch S3 and a fourth switch S4. When the movable end of the scheduled charging control button is electrically connected to the first fixed end S1 and the third switch S3 and the fourth switch S4 are in a closed state, the charging gun can directly charge the electric vehicle; when the movable end of the scheduled charging control button is electrically connected to the second fixed end S2 and the third switch S3 and the fourth switch S4 are in an open state, the control unit 24 can receive the target signal output by the charger interface to turn on the scheduled charging function. The third switch S3 and the fourth switch S4 are used to turn on or off the AC power of the charging gun.

[0062] By reserving the electrical connection information between the moving end of the charging control button and the first and second fixed ends S1 and S2 and the circuit information between the third switch S3 and the fourth switch S4, it is subsequently decided whether to use the charging gun to charge the electric vehicle.

[0063] In an optional embodiment, the charging adapter also includes an operating panel 22 for generating scheduled charging parameters; a control unit 24 is electrically connected to the operating panel 22, and the control unit 24 is also configured to perform the following steps: receiving the scheduled charging parameters generated by the operating panel 22 based on the target signal; and determining the scheduled charging information according to the scheduled charging parameters.

[0064] The operation panel 22 is an interface for the user to interact with the charging adapter. The operation panel 22 can receive the reservation instruction of the scheduled charging control button 21. The user inputs the relevant requirements of the scheduled charging through the operation panel, such as the scheduled timing start time, the scheduled timing duration and the charging power. The control unit 24 receives and analyzes the signals input by the user through the operation panel 22, and converts these signals into scheduled charging parameters that the control unit 24 can understand and process, such as timestamps (such as the start time and end time of the scheduled charging). According to the scheduled charging parameters, the specific scheduled charging information is determined.

[0065] The above solution can effectively handle and manage the charging needs of users and provide convenient and efficient charging services.

[0066] Before plugging in the gun, the user can first press the scheduled charging control button 21, use the operation panel 22 to input the scheduled timing duration (such as the scheduled charging start time), and press the confirmation key, and the subsequent controller will start timing, that is, the scheduled charging start time is input first, so as to improve the convenience of user operation.

[0067] Of course, according to actual conditions, the user can also plug in the gun first. When the control unit 24 controls the indicator unit 20 to display the first color, the user can press the scheduled charging control button 21, so that the movable end of the scheduled charging control button 21 is electrically connected to the second fixed end S2, such as the pilot signal generated by the pilot communication line 29 is connected to the control unit 24 through the scheduled charging control button 21. At this time, the user enters the scheduled timing duration through the operation panel 22 and presses the confirmation key, and the subsequent controller starts timing; the scheduled charging control button 21 can be a scheduled charging button, and the scheduled charging button can be a button switch, such as an ordinary button switch, or other button switches can be selected according to actual conditions. This embodiment does not make specific limitations on this.

[0068] The operation panel 22 is provided with number keys, a return key and a confirmation key. The number keys are used to input numbers and set the appointment timing duration. The return key allows the user to return to the previous operation step. The confirmation key is used to confirm the execution of the appointment timing duration, so as to facilitate various operations of the user.

[0069] In an alternative embodiment, in combination Figure 1 and Figure 3 As shown, the charging adapter further includes a display panel 23 , which is electrically connected to the operation panel 22 , and is used to display the scheduled charging parameters generated by the operation panel 22 in real time.

[0070] The display panel 23 may be a display screen, such as a liquid crystal display screen or an organic light emitting display screen, and the display panel may display the remaining scheduled charging start time and the charging time.

[0071] The display panel 23 is connected to the control unit 24 and is used to display the scheduled charging parameters generated by the operation panel 22 in real time, providing the user with more intuitive charging status information. The display panel 23 can also display real-time data such as charging progress, charging current and voltage, helping the user to monitor the charging process and predict the charging completion time. If a fault or abnormality occurs during the charging process, the display panel 23 will also provide warning or error information in time so that the user can take corresponding measures. The charging progress includes the charged amount and the charging time.

[0072] In an optional embodiment, receiving the target signal output by the charger interface 4 includes: acquiring a pilot signal output by the charger interface; determining whether the voltage of the pilot signal is a preset voltage; and if so, using the pilot signal as the target signal.

[0073] The control unit 24 obtains the pilot signal output by the charger interface 4 to control the charging process. The pilot signal is a signal used to help devices identify and synchronize, and can indicate information about the charging status and connection status. It plays an important role in the charging process of electric vehicles. When the charging gun sends the pilot signal, it generates a specific frequency and waveform so that the control unit 24 can identify and respond.

[0074] The control unit 24 determines whether the pilot signal is equal to the preset voltage. When the voltage of the pilot signal is equal to the preset voltage, such as the preset voltage is 6V, 9V or 12V, the pilot signal is determined to be the target signal. In this embodiment, the preset voltage is illustrated by 6V. The target signal can be a 6V PMW signal. Specifically, after the control unit 24 obtains the pilot signal, it is necessary to detect its voltage value and compare the detected voltage value with the preset voltage value. If the two are equal, it means that the voltage of the pilot signal is the preset voltage, and the pilot signal is used as the target signal. The above scheme can achieve accurate monitoring and control of the charging state.

[0075] In an alternative embodiment, in combination Figure 1 and Figure 3 As shown, the charging adapter further includes an indication unit 20, which is electrically connected to a control unit 24, and the control unit 24 is further configured to perform the following steps:

[0076] In the process of determining whether the voltage of the pilot signal is the preset voltage, if the determination is yes, the indicating unit 20 is controlled to display the first color; if the determination is no, the indicating unit 20 is controlled to display the second color.

[0077] The above-mentioned indication unit 20 is electrically connected to the control unit 24, and the control unit 24 controls the indication unit 20 to display a corresponding color, that is, the indication unit 20 receives an indication signal fed back by the control unit 24, and displays a corresponding color according to the indication signal. For example, when a PWM signal of a preset voltage is input into the charging gun, the control unit 24 controls the indication unit 20 to display a first color, indicating that the scheduled charging setting can be entered at this time; when a control signal other than the PWM of the preset voltage is input into the charging gun, the control unit 24 controls the indication unit 20 to display a second color, indicating that the scheduled charging setting control cannot be entered at this time, thereby helping the user to timely identify the scheduled charging status.

[0078] The above-mentioned preset voltage PWM signal may be a 6V PWM signal, a 9V PWM signal or a 12V PWM signal. In this embodiment, the preset voltage PWM signal may be a 6V PWM signal. In this embodiment, the first color may be green, and the second color may be red.

[0079] The above-mentioned indicator unit 20 can use a charging indicator light, such as a three-color LED. The three-color LED is a light source composed of red, green, and blue LED chips. This three-color LED adjusts the color and brightness by controlling the magnitude of the current, thereby achieving a mixture of multiple different colors and brightnesses. Its working principle is that under the action of the power supply, the red, green, and blue LED chips flow through three independent channels respectively, and finally the human eye perceives different colors and brightness to present a rich color effect. The three-color LED can be a SMD LED5050RGB lamp bead.

[0080] In addition, the control unit 24 can be directly electrically connected to the pilot communication line 29 in order to control the indication unit 20. Figure 5 As shown, Figure 5 It is a partial circuit diagram of another charging adapter for electric vehicles provided by the present invention; since the pilot communication line 29 is electrically connected to the control unit 24, the control unit 24 receives the pilot signal and detects the pilot signal. When the charging gun inputs a PWM of a preset voltage, the control unit 24 controls the indicator unit 20 to display a first color, indicating that the scheduled charging setting can be entered at this time. When the charging gun inputs a control signal other than the PWM of the preset voltage, the control unit 24 controls the indicator unit 20 to display a second color, indicating that the scheduled charging setting cannot be entered at this time, and the connection status between the charging gun and the electric vehicle needs to be reconfirmed later.

[0081] In an optional embodiment, after executing the step of controlling the switch component to be turned on according to the scheduled charging information, the control unit is further configured to execute the following steps:

[0082] If it is determined that the charging gun starts to charge the electric vehicle, the control indication unit is displayed in a third color.

[0083] When the charging gun starts to charge the electric vehicle, the indicator unit is switched to display a third color, which can be blue, indicating that charging is in progress. The indicator unit will flash at a certain frequency, and the flashing frequency will gradually decrease as the charging progresses. When the charging is completed, the indicator unit will be always on, indicating that the charging is completed. If the electric vehicle is not fully charged later, the control unit 24 determines whether the pilot signal is equal to the target signal.

[0084] With the above solution, displaying the third color indicates that the charging gun starts charging the battery in the electric vehicle, and displaying the third color can improve the user experience. Through intuitive color indication, users can easily understand the charging status of the battery and avoid energy waste and safety hazards caused by connecting the charger for a long time. This helps to improve user satisfaction and trust in electric vehicles. When the indicator unit is always on, it means that charging is completed. That is, it means that the battery in the electric vehicle has reached the optimal charging state. The control unit 24 can control the switch assembly to disconnect to avoid damage to the battery in the electric vehicle caused by overcharging. Stopping the battery in the electric vehicle in time can extend the service life of the battery, because overcharging not only wastes energy, but also may affect the performance and life of the battery in the electric vehicle.

[0085] In an optional embodiment, the charging adapter further includes a battery unit, and the battery unit is used to supply power to the control unit 24.

[0086] In the above solution, after the scheduled charging mode is turned on, the charging gun charges the battery unit 26 .

[0087] In the above scheme, the battery unit 26 can be a storage battery, and the storage battery can be a 18650 lithium battery or a 21700 lithium battery, wherein the 18650 lithium battery has a mature process, high monomer consistency and high safety performance. The 21700 lithium battery has a higher energy density and capacity, and its internal resistance is small, which helps to improve the charging and discharging efficiency and reduce the heat generation. At the same time, it has good heat dissipation performance, which is conducive to maintaining the performance of the battery unit 26 and extending its service life.

[0088] In this embodiment, there is only one battery, which can charge the control unit 24. Of course, the battery can also power the scheduled charging control button 21, the operation panel 22, the display panel 23 and the indication unit 20. For example, the battery charges the scheduled charging button, the control panel, the display panel 23, the charging indicator light and the controller to ensure the normal operation of the scheduled charging button, the control panel, the display panel 23, the charging indicator light and the controller.

[0089] After the scheduled charging mode is turned on and before the scheduled charging start time set by the owner, the control unit 24 connects to the AC power of the charging gun and charges the battery unit 26 through the internal charging circuit (such as the AC / DC circuit module connected to the control unit 24), thereby ensuring the normal operation of the scheduled charging button 21, control panel 22, display panel 23, charging indicator light and controller, which is more conducive to realizing the scheduled charging function of the electric vehicle.

[0090] Of course, according to actual conditions, from the start of the scheduled charging mode until the charging of the electric vehicle is completed, the charging gun can charge the battery unit to ensure that each component in the charging adapter is powered, and this embodiment does not limit this.

[0091] It should be noted that the control unit 24 can be connected to an AC / DC circuit. When the control unit 24 is connected to the AC power of the charging gun, the charging adapter can convert the AC power into DC power to charge the battery.

[0092] In an optional embodiment, along the thickness direction of the charging body 1, the orthographic projection of the scheduled charging control button 21, the orthographic projection of the operation panel 22, the orthographic projection of the display panel 23, the orthographic projection of the indication unit 20, the orthographic projection of the control unit 24 and the orthographic projection of the battery unit 26 do not overlap;

[0093] In the width direction of the charging body 1 , the orthographic projections of the instruction unit 20 , the scheduled charging control button 21 , and the battery unit 26 overlap with the orthographic projection of the operation panel 22 .

[0094] In the above scheme, along the length direction of the charging body 1, the display panel 23 and the control unit 24 are located on opposite sides of the charging body 1, such as the display panel 23 is located on the side of the charging body 1 close to the vehicle charging interface 3, and the control unit 24 is located on the side of the charging body 1 close to the charger interface 4. When the display panel 23 is located on the side of the charging body 1 close to the vehicle charging interface 3 and the control unit 24 is located on the side of the charging body 1 close to the charger interface 4, it is beneficial for the user to observe the remaining scheduled timing duration and the charging time output by the display panel 23, thereby helping the user to grasp the charging progress in real time; of course, according to actual conditions, the display panel 23 can also be located on the side of the charging body 1 close to the charger interface 4, and the control unit 24 can be located on the side of the charging body 1 close to the vehicle charging interface 3, and this embodiment does not make specific limitations.

[0095] Along the length direction of the charging body 1, the operation panel 22, the indication unit 20, the scheduled charging control button 21 and the battery unit 26 are located between the display panel 23 and the control unit 24, and the operation panel 22, the indication unit 20, the scheduled charging control button 21 and the battery unit 26 do not overlap along the thickness direction of the charging body 1. At the same time, along the width direction of the charging body 1, the orthographic projection of the indication unit 20, the scheduled charging control button 21 and the battery unit 26 overlaps with the orthographic projection of the operation panel 22. For example, the operation panel 22 is located on the left side of the charging body 1, and the indication unit 20, the scheduled charging control button 21 and the battery unit 26 are located on the right side of the charging body 1, so as to facilitate user operation; of course, according to actual conditions, the operation panel 22 is located on the right side of the charging body 1, and the indication unit 20, the scheduled charging control button 21 and the battery unit 26 are located on the left side of the charging body 1, and this embodiment does not make specific limitations on this.

[0096] In the above scheme, the overall layout of the display panel 23, the operation panel 22, the indication unit 20, the scheduled charging control button 21, the battery unit 26 and the control unit 24 is reasonable, making it easier for users to find and operate various components, reducing the time of searching, thereby improving operating efficiency; it is conducive to reducing operating errors and enhancing safety; the reasonable layout makes users feel more comfortable and convenient when using the device, thereby improving user experience; making the maintenance and repair of the equipment more convenient and quick; maintenance and repair; maximizing the use of space within a limited space, making the entire device more compact.

[0097] Since the pilot communication line 29, the scheduled charging control button 21, the operation panel 22, the indication unit 20, and the display panel 23 are respectively connected to the control unit 24, they are used to receive the pilot signal generated by the charging gun and the feedback data of the scheduled charging control button 21, and output the scheduled timing duration (such as the scheduled charging start time) to the display panel 23 and output the indication signal to the indication unit 20, and detect the pilot signal at the same time. When the preset charging information reaches the scheduled charging start time, the charging gun charges the electric vehicle, and detects the pilot signal, the first fixed end S1 and the second fixed end S2, the third switch S3 and the fourth switch S4. When the preset charging information reaches the scheduled charging start time, the power supply device charges the electric vehicle. Since the display panel can display the remaining scheduled timing duration, it helps users to grasp the charging progress in real time and ensure that the charging process is carried out according to the preset plan and conditions, which brings great convenience to users.

[0098] In an optional embodiment, along the width direction of the charging body 1, the orthographic projection of the indication unit 20, the orthographic projection of the scheduled charging control button 21 and the orthographic projection of the battery unit 26 do not overlap. In this scheme, along the length direction of the charging body 1, the indication unit 20, the scheduled charging control button 21 and the battery unit 26 are sequentially arranged. It can be understood that the scheduled charging control button 21 is located between the indication unit 20 and the battery unit 26. Of course, according to actual conditions, the positions of the indication unit 20, the scheduled charging control button 21 and the battery unit 26 can also be adjusted along the length direction of the charging body 1, and this is not specifically limited in this embodiment.

[0099] The above solution can further improve the rationality of the overall layout and subsequently avoid line entanglement between various components.

[0100] In an optional embodiment, the charging body 1 includes a battery compartment 11, and the battery cell 26 is located in the battery compartment 11. Placing the battery cell 26 in the battery compartment 11 can not only effectively isolate the battery from the external environment and reduce safety hazards caused by external factors, but also make the maintenance and replacement of the battery more convenient, and at the same time facilitate the inspection, maintenance or replacement of the battery without disassembling the entire device.

[0101] The above scheme, combined with Figure 1 and Figure 3 As shown, it can be understood that the scheduled charging control button 21, the operation panel 22, the display panel 23, the indication unit 20 and the switch assembly 25 are respectively electrically connected to the control unit 24. According to actual conditions, the components closer to the control unit 24 can be connected by pins; the components closer to the control unit 24 can be connected by wires, which is not specifically limited in this embodiment.

[0102] By adopting the above scheme, since the scheduled charging control button is directly set on the on-board charging device (such as the conversion head) of the electric vehicle, for models that are not equipped with the scheduled charging function, it can not only realize the scheduled charging function of the electric vehicle, thereby realizing monitoring and controlling the interaction between the electric vehicle and the charging gun before charging, ensuring the safety and efficiency of subsequent charging, but also can display the remaining scheduled charging start time, thereby helping users to grasp the charging progress in real time and ensure that the charging process is carried out according to the preset plan and conditions, thereby bringing great convenience to users.

[0103] Figure 6 The present invention is a flow chart of a control method for a charging adapter for an electric vehicle provided by the present invention; the control method for a charging adapter for an electric vehicle is applied to the above-mentioned charging adapter for an electric vehicle, and comprises the following steps:

[0104] Step 101 : Set the scheduled time duration (scheduled charging start time and end time) according to the operation panel 22 , and the display panel 23 displays the scheduled time duration.

[0105] Step 102 : The control unit 24 determines whether the charging adapter for the electric vehicle is plugged in between the charging gun and the electric vehicle.

[0106] If the charging adapter for the electric vehicle is plugged between the charging gun and the electric vehicle, step 103 is executed.

[0107] Step 103 : The control unit 24 receives the pulse width modulation sent by the charging gun, controls the pilot signal, and detects the pilot signal.

[0108] Step 104 , based on the detected pilot signal, the control unit 24 connects the AC power of the charging gun, and the AC power of the charging gun charges the battery unit 26 ; when the preset time data reaches the scheduled timing duration, the charging gun charges the electric vehicle.

[0109] If the charging adapter for the electric vehicle is not plugged in between the charging gun and the electric vehicle, step 105 is executed.

[0110] Step 105: Reconnect the charging adapter for the electric vehicle between the charging gun and the electric vehicle.

[0111] In the above step 101, the user can first set the scheduled timing duration, and the display panel 23 then displays the scheduled timing duration, so that the user can set the scheduled charging time information before completing the gun plugging, which increases the convenience of user operation; of course, according to actual conditions, the scheduled charging time information can also be set after the gun is plugged in, and this embodiment does not make specific limitations on this.

[0112] Step 102 , the control unit 24 determines whether the charger is plugged in, such as normally connecting the charger interface 4 to the charger and plugging the vehicle charging interface 3 into the vehicle power socket of the electric vehicle. If the charger is plugged in, step 103 is executed.

[0113] Step 103 : The charging gun, the converter and the electric vehicle start communicating with each other using a pilot signal, and the control unit 24 detects the pilot signal.

[0114] Step 104: According to the pilot signal detected by the control unit 24, the control unit 24 accesses the voltage and current of the AC power in the charging gun, converts it into DC power through the internal charging circuit, and charges the battery unit 26. When the scheduled charging time information reaches the owner to set the scheduled charging start time, the control unit 24 accesses the voltage and current of the AC power of the charging gun, and the voltage and current of the AC power of the charging gun charges the electric vehicle. The electric vehicle is provided with an OBC, and the OBC in the electric vehicle converts the AC power into DC power. There is no need to convert the AC power of the charging gun into DC power in the charging adapter for the electric vehicle.

[0115] The above pilot signal may be a CP pilot signal.

[0116] By adopting the above scheme, since the scheduled charging control button is set on the charging adapter (such as an adapter) for the electric vehicle, for the vehicle model that is not equipped with the scheduled charging function, not only can the scheduled charging function of the electric vehicle be realized, thereby realizing monitoring and controlling the interaction between the electric vehicle and the charging gun before charging, ensuring the safety and efficiency of subsequent charging, but also the display panel 23 can display the remaining scheduled timing time, thereby helping the user to grasp the charging progress in real time and ensure that the charging process is carried out according to the preset plan and conditions, thereby bringing great convenience to the user.

[0117] In an alternative embodiment, in combination Figure 1 , Figure 4 and Figure 7 As shown, Figure 7 It is a flow chart of another control method for a charging adapter for an electric vehicle provided by the present invention;

[0118] The scheduled charging control button 21 includes a moving end, a first stationary end S1 and a second stationary end S2, and the moving end is electrically connected to the pilot communication line 29;

[0119] The switch assembly 25 includes a third switch S3 and a fourth switch S4 , and the third switch S3 and the fourth switch S4 are electrically connected to the control unit 24 , respectively.

[0120] If the charging adapter is plugged between the charging gun and the electric vehicle, the control unit 24 receives the pulse width modulation control pilot signal sent by the charging gun through the reserved charging control button 21, and detects the pilot signal, including:

[0121] Step 1021, plug the charger interface 4 into the charging gun, and plug the vehicle charging interface 3 into the charging port of the electric vehicle, that is, plug the gun, which can ensure the efficiency of the charging process.

[0122] Step 1022 , the control unit 24 determines whether the pilot signal is equal to a pulse width modulation signal of a preset voltage (such as a target signal). If it is equal to a pulse width modulation signal of a preset voltage, step 1023 is executed.

[0123] Step 1023: The indication unit 20 is displayed in the first color.

[0124] If the pulse width modulation signal is not equal to the preset voltage, the indication unit 20 displays the second color, and step 1021 is executed.

[0125] In the above scheme, when the charger interface 4 is normally connected to the charging gun, and the vehicle charging interface 3 is inserted into the vehicle power socket of the electric vehicle, the internal CP communication line of the charging adapter defaults that the movable end of the scheduled charging control button is electrically connected to the first fixed end S1, and the third switch S3 and the fourth switch S4 in the switch assembly 25 are in the disconnected state, and the control unit 24 detects the CP signal generated by the CP communication line; the oscillator inside the controller in the charging gun generates the corresponding PWM, and the control unit 24 controls the indicator unit 20 to display a color change according to the PWM signal generated by the controller in the charging gun to remind the operator. When the charging gun inputs a 6V PWM signal, the control unit 24 controls the indicator unit 20 to display a first color, indicating that the scheduled charging mode can be entered at this time; when the charging gun inputs other control signals other than 6V PWM, the control unit 24 controls the indicator unit 20 to display a second color, indicating that the scheduled charging mode cannot be entered at this time.

[0126] In this embodiment, the first color is green and the second color is red; the pulse width modulation signal of the preset voltage can be a 6V PWM signal, a 9V PWM signal or a 12V PWM signal. This embodiment only takes the pulse width modulation signal of the preset voltage as a 6V PWM signal as an example.

[0127] Step 103: According to the pilot signal after detection, the control unit 24 connects the AC power of the charging gun, and the AC power of the charging gun charges the battery unit 26; when the preset time data reaches the scheduled charging start time, the charging gun charges the electric vehicle, including:

[0128] Step 1031, the control unit 24 determines whether the movable end of the scheduled charging control button is connected to the first fixed end S1, if so, execute step 1032;

[0129] Step 1032, the control unit 24 determines whether the third switch S3 and the fourth switch S4 are in a closed state;

[0130] If the third switch S3 and the fourth switch S4 are both in the closed state, execute step 1033;

[0131] Step 1033: the electric vehicle is charged;

[0132] If the movable end of the scheduled charging control button is not electrically connected to the first fixed end S1, step 1034 is executed;

[0133] Step 1034, the control unit 24 determines whether the movable end of the scheduled charging control button is electrically connected to the second fixed end S2, if so, execute step 1035;

[0134] Step 1035, the control unit 24 starts timing;

[0135] It should be noted that the control unit 24 can be connected to a timing circuit. The timing information generated by the timing circuit needs to be processed by the control unit 24. The control unit 24 controls the display panel 23 to display the timing information so that the user can intuitively obtain time or timing related information.

[0136] Step 1036, waiting for a certain time;

[0137] Step 1037, the control unit 24 determines whether the timing has ended. If the timing has not ended, the timing wait continues until the timing ends.

[0138] Step 1038 : The control unit 24 electrically connects the movable end of the scheduled charging control button to the first fixed end S1 , and switches the third switch S3 and the fourth switch S4 to a closed state, and then executes step 1033 .

[0139] Step 1033: the electric vehicle is charged, such as the charging gun charges the electric vehicle, that is, the electric vehicle starts charging.

[0140] If the third switch S3 and the fourth switch S4 are both in the off state, the third switch S3 is in the off state, or the fourth switch S4 is in the off state, execute step 1024;

[0141] If the control unit 24 controls the indicating unit 20 to display the second color, step 1021 is subsequently re-executed.

[0142] If the movable end of the scheduled charging control button is not electrically connected to the second fixed end S2, step 1024 is executed, such as the control unit 24 controls the indicating unit 20 to display the second color, and then step 1021 is re-executed.

[0143] In the above scheme, the electric vehicle is charged according to the relationship between the CP pilot signal and the 6V PWM, the electrical connection relationship between the moving end of the scheduled charging control button and the first fixed end S1 and the second fixed end S2, and the closed state between the third switch S3 and the fourth switch S4, thereby realizing the scheduled charging function of the electric vehicle.

[0144] It should be noted that: when the charging gun starts to charge the electric vehicle, the control unit 24 controls the indicator unit 20 to display the third color. Subsequently, the different colors displayed by the indicator unit 20 can also be used to determine which stage the charging adapter is in. For example, if the control unit 24 determines that the CP pilot signal is equal to 6V PWM, the control unit 24 controls the indicator unit 20 to display the first color; if the control unit 24 determines that the CP pilot signal is not equal to 6V PWM, or the moving end of the reserved charging control button is not electrically connected to the second stationary end S2, the control unit 24 controls the indicator unit 20 to display the second color.

[0145] In an optional embodiment, see Figure 1 and Figure 7 As shown, in step 104, according to the pilot signal after detection, the control unit 24 connects the AC power of the charging gun, and the AC power of the charging gun charges the battery unit 26; when the preset time data reaches the scheduled charging start time, the charging gun charges the electric vehicle, including:

[0146] Step 1041, after charging the electric vehicle, the indicator unit 20 displays a third color, which may be blue;

[0147] Step 1042, the control unit 24 determines whether the electric vehicle has completed charging. If the electric vehicle has completed charging, step 1042 is executed;

[0148] Step 1042, charging ends. When the electric vehicle is fully charged, the control unit 24 ends charging to ensure that the battery of the electric vehicle is not overcharged.

[0149] If the electric vehicle is not fully charged, step 1022 is executed, where the control unit 24 determines whether the pilot signal is equal to a pulse width modulation signal of a preset voltage, such as a 6V PWM signal.

[0150] It should be noted that when charging the electric vehicle, the display panel 23 can display the charging time so that the user can understand the charging progress of the electric vehicle.

[0151] In the above solution, after the electric vehicle starts to be charged, the control unit 24 controls the indicator unit 20 to display the third color, and the third color allows the owner to quickly determine that the vehicle has entered the charging mode for the electric vehicle.

[0152] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A charging adapter for an electric vehicle, characterized in that: include: A vehicle charging interface, a charger interface, a switch assembly and a control unit, wherein the vehicle charging interface is used to connect to a vehicle charging port, and the charger interface is used to connect to a charging gun; One end of the switch assembly is connected to the vehicle charging interface, and the other end of the switch assembly is connected to the charger interface; The control unit is connected to the control end of the switch assembly and the charger interface respectively, and the control unit is further configured to perform the following steps: Receiving a target signal output by the charger interface; acquiring scheduled charging information based on the target signal; The switch component is controlled to be turned on according to the reserved charging information, so that the vehicle charging interface is connected to the charger interface.

2. The charging adapter for electric vehicles according to claim 1, characterized in that: The controlling the switch component to be turned on according to the scheduled charging information includes: Determine the scheduled time duration based on the scheduled charging information and start timing; When the timing duration reaches the preset timing duration, the switch component is controlled to be turned on.

3. The charging adapter for electric vehicles according to claim 1, characterized in that: The charging adapter also includes a scheduled charging control button; The movable end of the scheduled charging control button is electrically connected to the charger interface, the first fixed end is electrically connected to the vehicle charging interface, and the second fixed end is electrically connected to the control unit; When the movable end of the scheduled charging control button is electrically connected to the second fixed end, the control unit receives the target signal of the charger interface; The control unit is electrically connected to the control end of the scheduled charging control button, and the control unit is also configured to perform the following steps: after obtaining the scheduled charging information based on the target signal, control the movable end of the scheduled charging control button to be electrically connected to the first fixed end and the switch component to be turned on according to the scheduled charging information.

4. The charging adapter for electric vehicles according to claim 1, characterized in that: The switch assembly includes a third switch and a fourth switch, one end of the third switch is connected to the neutral line of the vehicle charging interface, and the other end is connected to the neutral line of the charger interface; one end of the fourth switch is connected to the live line of the vehicle charging interface, and the other end is connected to the live line of the charger interface; The third switch and the fourth switch are electrically connected to the control unit, and the control unit controls the opening and closing of the third switch and the fourth switch.

5. The charging adapter for electric vehicles according to claim 1, characterized in that: The charging adapter also includes an operation panel for generating scheduled charging parameters; The control unit is electrically connected to the operation panel, and the control unit is further configured to perform the following steps: receiving a scheduled charging parameter generated by the operation panel based on the target signal; The scheduled charging information is determined according to the scheduled charging parameters.

6. The charging adapter for electric vehicles according to claim 5, characterized in that: The charging adapter also includes a display panel; The display panel is electrically connected to the operation panel, and the display panel is used to display the scheduled charging parameters generated by the operation panel in real time.

7. The charging adapter for electric vehicles according to claim 1, characterized in that: The receiving the target signal output by the charger interface includes: Acquire a pilot signal output by the charger interface; Determining whether the voltage of the pilot signal is a preset voltage; If the judgment is yes, the pilot signal is used as the target signal.

8. The charging adapter for electric vehicles according to claim 7, characterized in that: The charging adapter further includes an indication unit, which is electrically connected to the control unit, and the control unit is further configured to perform the following steps: In the process of determining whether the voltage of the pilot signal is the preset voltage, if the determination is yes, the indicating unit is controlled to display a first color; if the determination is no, the indicating unit is controlled to display a second color.

9. The charging adapter for electric vehicles according to claim 8, characterized in that: After executing the step of controlling the switch component to be turned on according to the scheduled charging information, the control unit is further configured to execute the following steps: If it is determined that the charging gun starts to charge the electric vehicle, the indicating unit is controlled to display a third color.

10. The charging adapter for electric vehicles according to claim 1, characterized in that: The charging adapter also includes a battery unit, and the battery unit is used to supply power to the control unit.

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