Power supply circuit, power supply system and two-wheeled vehicle

Abstract

The utility model relates to a power supply circuit, a power supply system and a two-wheeled vehicle. The power supply circuit comprises a central control circuit; the power supply gating circuit is connected with the first power supply access and is used for being connected with the second voltage output port, and when the power supply gating circuit can detect the voltage output by the second voltage output port, the power supply gating circuit controls the first power supply access to be switched off, and the power supply gating circuit controls the second power supply access to be switched off. When the power supply gating circuit does not detect the voltage output by the second voltage output port, the power supply gating circuit controls the first power supply access to be closed, and the external battery supplies power to the central control circuit through the second voltage output port and the second power supply access; therefore, the external battery supplies power to the central control circuit through the first voltage output port and the first power supply path. By adopting the power supply circuit, the two-wheeled vehicle can be compatible with a new national standard battery to supply power to the central control circuit.

Description

Technical Field

[0001] The present application relates to the technical field of electrical architectures, and particularly to a power supply circuit, a power supply system, and a two-wheeled vehicle. Background Art

[0002] Electric two-wheeled vehicles need to be powered by electricity and are a general term for two-wheeled electric bicycles, electric motorcycles, and electric mopeds. Electric two-wheeled vehicles have been widely used due to their low price and convenience. In order to improve the industry standardization and safety of electric two-wheeled vehicles, a series of new national standards have emerged in terms of the technology and functions of the batteries of electric two-wheeled vehicles.

[0003] However, currently, if an existing electric two-wheeled vehicle needs to use a battery complying with the new national standard, that is, a new national standard battery, there is a problem of incompatibility between the old version controller of the original electric two-wheeled vehicle and the new national standard battery. Utility Model Content

[0004] Based on this, in view of the above technical problems, it is necessary to provide a power supply circuit, a power supply system, and a two-wheeled vehicle that can be compatible with new national standard batteries.

[0005] In a first aspect, the present utility model provides a power supply circuit, and the power supply circuit includes:

[0006] A central control circuit;

[0007] A first power supply path, the input end of the first power supply path is used to connect to the first voltage output port of an external battery, and the output end of the first power supply path is connected to the central control circuit;

[0008] A second power supply path, the input end of the second power supply path is used to connect to the second voltage output port of the external battery, and the output end of the second power supply path is connected to the central control circuit;

[0009] A power supply selection circuit, the power supply selection circuit is connected to the first power supply path and is used to connect to the second voltage output port. When the power supply selection circuit can detect the voltage output from the second voltage output port, the power supply selection circuit controls the first power supply path to be turned off, so that the external battery supplies power to the central control circuit through the second voltage output port and the second power supply path. When the power supply selection circuit fails to detect the voltage output from the second voltage output port, the power supply selection circuit controls the first power supply path to be closed, so that the external battery supplies power to the central control circuit through the first voltage output port and the first power supply path.

[0010] In one embodiment, the voltages output from the first voltage output port and the second voltage output port are different in magnitude.

[0011] In one embodiment, the voltage output from the first voltage output port is 48V, and the voltage output from the second voltage output port is 33V.

[0012] In one embodiment, the first power supply path includes: a controller circuit and a gating switch.

[0013] In one embodiment, the first power supply path includes a first diode.

[0014] In one embodiment, the second power supply path includes a second diode.

[0015] In one embodiment, the power supply gating circuit includes a voltage detection circuit and a switch control circuit;

[0016] The switch control circuit is connected to the gating switch, the voltage detection circuit is connected to the switch control circuit, the voltage detection circuit is used to be connected to the second voltage output port. When the voltage detection circuit can detect the voltage output from the second voltage output port, the switch control circuit controls the gating switch to turn off, so that the external battery supplies power to the central control circuit through the second voltage output port and the second power supply path; when the voltage detection circuit fails to detect the voltage output from the second voltage output port, the switch control circuit controls the gating switch to close, so that the external battery supplies power to the central control circuit through the first voltage output port and the first power supply path.

[0017] In one embodiment, the power supply circuit further includes a voltage conversion circuit;

[0018] The input end of the voltage conversion circuit is connected to the first power supply path and the second power supply path;

[0019] The output end of the voltage conversion circuit is connected to the central control circuit.

[0020] In a second aspect, the present invention provides a power supply system, including the power supply circuit according to any one of the first aspects described above and a battery.

[0021] In a third aspect, the present invention provides a two-wheeled vehicle, including the power supply system according to the second aspect described above.

[0022] The above power supply circuit, power supply system and two-wheeled vehicle include a central control circuit; a first power supply path, wherein the input end of the first power supply path is used to connect to the first voltage output port of an external battery, and the output end of the first power supply path is connected to the central control circuit; it further includes a second power supply path, the input end of the second power supply path is used to connect to the second voltage output port of the external battery, and the output end of the second power supply path is connected to the central control circuit; it further includes a power supply selection circuit, the power supply selection circuit is connected to the first power supply path and is used to connect to the second voltage output port. When the power supply selection circuit can detect the voltage output from the second voltage output port, the power supply selection circuit controls the first power supply path to be turned off, so that the external battery supplies power to the central control circuit through the second voltage output port and the second power supply path. When the power supply selection circuit fails to detect the voltage output from the second voltage output port, the power supply selection circuit controls the first power supply path to be closed, so that the external battery supplies power to the central control circuit through the first voltage output port and the first power supply path. In this way, the power supply selection circuit is used to detect whether the external battery is a new national standard battery. If the external battery is a new national standard battery, that is, the power supply selection circuit can detect the voltage output from the second voltage output port of the external battery. At this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the second voltage output port and the second power supply path. If the external battery is not a new national standard battery, that is, the power supply selection circuit fails to detect the voltage output from the second voltage output port, at this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the first voltage output port and the first power supply path. In this way, regardless of whether the external battery is a new national standard battery or not, power supply to the central control circuit can be achieved, and at the same time, there is no need to replace the original motor controller circuit, and the compatibility is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 One of the structural schematic diagrams of the power supply circuit provided in an embodiment;

[0025] Figure 2 Another structural schematic diagram of the power supply circuit provided in another embodiment;

[0026] Figure 3 Another structural schematic diagram of the power supply circuit provided in another embodiment;

[0027] Figure 4 Another structural schematic diagram of the power supply circuit provided in another embodiment;

[0028] Figure 5 It is a schematic structural diagram of the power supply system provided in another embodiment.

[0029] Description of main component numbers:

[0030] Power supply circuit 100; Central control circuit 10; First power supply path 20; Second power supply path 30;

[0031] Power supply selection circuit 40; Controller circuit 21; Selection switch 22; First diode 23;

[0032] Second diode 31; Voltage detection circuit 41; Switch control circuit 42; Voltage conversion circuit 50. Detailed implementation manners

[0033] To make the objectives, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0039] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", "ideal embodiments", etc. mean that the specific features, structures, materials or features described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0040] In order to improve the industry standardization of electric two-wheelers and the safety of electric two-wheelers, a series of new national standards have emerged in terms of the technology and functions of batteries. However, for current existing electric two-wheelers, if they need to use the batteries of the new national standard, there is a problem of incompatibility between the old version of the motor controller of the original electric two-wheeler and the batteries of the new national standard.

[0041] In view of this, the present application provides a power supply circuit, a power supply system and a two-wheeled vehicle. The power supply selection circuit is used to detect whether the external battery is a new national standard battery. If the external battery is a new national standard battery, that is, the power supply selection circuit can detect the voltage output from the second voltage output port of the external battery. At this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the second voltage output port and the second power supply path. If the external battery is not a new national standard battery, that is, the power supply selection circuit fails to detect the voltage output from the second voltage output port. At this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the first voltage output port and the first power supply path. In this way, regardless of whether the external battery is a new national standard battery or not, the central control circuit can be powered, and at the same time, there is no need to replace the original motor controller circuit, with higher compatibility.

[0042] In an embodiment of the present application, as Figure 1 shown, a power supply circuit 100 is provided. The power supply circuit includes: a central control circuit 10; a first power supply path 20, the input end of the first power supply path 20 is used to connect to the first voltage output port of the external battery, and the output end of the first power supply path 20 is connected to the central control circuit 10; a second power supply path 30, the input end of the second power supply path 30 is used to connect to the second voltage output port of the external battery, and the output end of the second power supply path 30 is connected to the central control circuit 10.

[0043] Among them, the power supply circuit 100 can be applied to an electric two-wheeled vehicle. The central control circuit 10 is a device for intelligent control of the electric two-wheeled vehicle and accessory control of the electric two-wheeled vehicle. The external battery is used to supply power to the electric two-wheeled vehicle. The external battery includes a first voltage output port P+ and P- and a second voltage output port D+, which are respectively connected to the first power supply path 20 and the second power supply path 30. Therefore, the external battery can supply power to the central control circuit 10 through the first power supply path 20 or the second power supply path 30.

[0044] A power supply selection circuit 40, the power supply selection circuit 40 is connected to the first power supply path 20 and is used to connect to the second voltage output port. When the power supply selection circuit 40 can detect the voltage output from the second voltage output port, the power supply selection circuit 40 controls the first power supply path 20 to be turned off, so that the external battery supplies power to the central control circuit 10 through the second voltage output port and the second power supply path 30. When the power supply selection circuit 40 fails to detect the voltage output from the second voltage output port, the power supply selection circuit 40 controls the first power supply path 20 to be closed, so that the external battery supplies power to the central control circuit 10 through the first voltage output port and the first power supply path 20.

[0045] Optionally, the external battery may be a battery of the new national standard version or an old national standard version of the battery that already exists in the market. To meet the interchangeable use requirements of the new national standard version of the battery and the old national standard version of the battery, and at the same time without changing the existing motor controller of the electric two-wheeler, therefore, selection is made through the power supply selection circuit 40. If the external battery is a battery of the new national standard version, the second voltage output port of the external battery will output a voltage that meets the requirements of the new national standard. At this time, the power supply selection circuit 40 can detect the voltage output by the second voltage output port, and the power supply selection circuit 40 controls the first power supply path 20 to turn off, so that the external battery can output voltage through the second voltage output port and supply power to the central control circuit 10 through the second power supply path 30. If the external battery is an old national standard version of the battery, that is, the second voltage output port of the external battery will not output voltage. At this time, the power supply selection circuit 40 cannot detect the voltage output by the second voltage output port, and the power supply selection circuit 40 controls the first power supply path 20 to close, so that the external battery can supply power to the central control circuit 10 through the first voltage output port of the external battery and the first power supply path 20.

[0046] In the above embodiment, there is a first power supply path. Among them, the input end of the first power supply path is used to connect to the first voltage output port of the external battery, and the output end of the first power supply path is connected to the central control circuit; there is also a second power supply path. The input end of the second power supply path is used to connect to the second voltage output port of the external battery, and the output end of the second power supply path is connected to the central control circuit; there is also a power supply selection circuit. The power supply selection circuit is connected to the first power supply path and is used to connect to the second voltage output port. When the power supply selection circuit can detect the voltage output by the second voltage output port, the power supply selection circuit controls the first power supply path to turn off, so that the external battery supplies power to the central control circuit through the second voltage output port and the second power supply path. When the power supply selection circuit fails to detect the voltage output by the second voltage output port, the power supply selection circuit controls the first power supply path to close, so that the external battery supplies power to the central control circuit through the first voltage output port and the first power supply path. In this way, the power supply selection circuit is used to detect whether the external battery is a new national standard battery. If the external battery is a new national standard battery, that is, the power supply selection circuit can detect the voltage output by the second voltage output port of the external battery. At this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the second voltage output port and the second power supply path. If the external battery is not a new national standard battery, that is, the power supply selection circuit fails to detect the voltage output by the second voltage output port. At this time, the power supply selection circuit controls the external battery to supply power to the central control circuit through the first voltage output port and the first power supply path. In this way, regardless of whether the external battery is a new national standard battery or not, power supply to the central control circuit can be achieved, and at the same time, there is no need to replace the original motor controller circuit, and the compatibility is higher.

[0047] In one embodiment of the present application, the voltages output by the first voltage output port and the second voltage output port are different in magnitude.

[0048] Among them, the external battery includes a first voltage output port and a second voltage output port. Since the new national standard battery requires the voltage for powering the central control circuit 10 to be below 35V (volts), the voltage output by the second voltage output port of the new national standard battery is required to be less than 35V. The second voltage output port of the old version battery does not output voltage. The voltages output by the first voltage output ports of the new national standard battery and the old version battery can be the same.

[0049] Optionally, the voltage output by the first voltage output port is 48V, and the voltage output by the second voltage output port is 33V.

[0050] Among them, the voltage output by the first voltage output port of the external battery is 48V. For the old version battery, the second voltage output port does not output voltage, and the voltage output by the first voltage output port is supplied to the central control circuit 10 through the motor controller. For the new national standard requirement, the power supply to the central control circuit 10 needs to be below 35V. Therefore, the voltage output by the second voltage output port of the new national standard battery is 33V, and the new national standard battery supplies power to the central control circuit 10 through the voltage output by the second voltage output port.

[0051] In an embodiment of the present application, as Figure 2 shown, the first power supply path 20 includes: a controller circuit 21 and a selection switch 22.

[0052] Among them, the controller circuit 21 is the original motor controller of the electric two-wheeler that matches the old version battery. The first voltage output port of the external battery is connected to the controller circuit 21, and the central control circuit 10 is powered through the controller circuit 21. The selection switch 22 is a switching device, and the disconnection and conduction of the first power supply path 20 can be controlled by disconnection and closing. When the selection switch 22 is disconnected, the first power supply path 20 is disconnected; when the selection switch 22 is closed, the first power supply path 20 is conducted.

[0053] Optionally, please continue to refer to Figure 2 , the first power supply path 20 includes a first diode 23.

[0054] Among them, the first diode 23 can play the roles of switching and isolation, ensuring the unidirectional conduction of the first power supply path 20.

[0055] In one embodiment, as Figure 3 shown, the second power supply path 30 includes a second diode 31.

[0056] Among them, the second diode 31 and the first diode 23 can be the same, both playing the roles of switching and isolation. The second diode 31 can ensure the unidirectional conduction of the second power supply path 30.

[0057] In an embodiment of the present application, as Figure 4 shown, the power supply selection circuit 40 includes a voltage detection circuit 41 and a switch control circuit 42; the switch control circuit 42 is connected to the selection switch 22, the voltage detection circuit 41 is connected to the switch control circuit 42, and the voltage detection circuit 41 is used to be connected to the second voltage output port. When the voltage detection circuit 41 can detect the voltage output from the second voltage output port, the switch control circuit 42 controls the selection switch 22 to turn off, so that the external battery supplies power to the central control circuit 10 through the second voltage output port and the second power supply path 30; when the voltage detection circuit 41 fails to detect the voltage output from the second voltage output port, the switch control circuit 42 controls the selection switch 22 to close, so that the external battery supplies power to the central control circuit 10 through the first voltage output port and the first power supply path 20.

[0058] Among them, the voltage detection circuit 41 can be used for voltage detection, the switch control circuit 42 can be used to control the turn-off and closure of the selection switch 22, the voltage detection circuit 41 is connected to the second voltage output port, and is used to detect whether the second voltage output port outputs a voltage. If the second voltage output port outputs a voltage, it is determined that the external battery is a new national standard battery. At this time, the switch control circuit 42 controls the selection switch 22 to disconnect, that is, the first power supply path 20 is disconnected, so that the new national standard battery can supply power to the central control circuit 10 through the second voltage output port and the second power supply path 30.

[0059] If the voltage detection circuit 41 fails to detect the voltage output from the second voltage output port, it is determined that the external battery is an old version battery. At this time, the switch control circuit 42 controls the selection switch 22 to close, that is, the first power supply path 20 is closed, and at this time the second power supply path 30 is disconnected, so that the old version battery can supply power to the central control circuit 10 through the first voltage output port and the first power supply path 20.

[0060] In the above embodiment, the voltage of the second voltage output port of the external battery is detected by the voltage detection circuit to determine whether the external battery is a new national standard battery or an old version battery, so that different power supply paths can be selected through the switch control circuit to supply power to the central control circuit, realizing compatibility with different versions of batteries, meeting the voltage requirements of the new national standard, and the need for interchangeable use of new and old batteries.

[0061] In one embodiment, please continue to refer to Figure 4, the power supply circuit 100 further includes a voltage conversion circuit 50; wherein, the input end of the voltage conversion circuit 50 is connected to the first power supply path 20 and the second power supply path 30; the output end of the voltage conversion circuit 50 is connected to the central control circuit 10.

[0062] Wherein, the voltage conversion circuit 50 is used to convert the voltage output by the first power supply path 20 or the second power supply path 30 into a voltage suitable for powering the central control circuit 10, such as 28V. Optionally, the voltage conversion circuit 50 can be a DC / DC buck circuit, which is used to convert the 48V voltage output by the first power supply path 20 or the 33V voltage output by the second power supply path into 28V.

[0063] In the embodiment of the present application, a power supply system is further provided, as Figure 5 shown, the power supply system includes the power supply circuit and the battery described in the above embodiment.

[0064] In the embodiment of the present application, a two-wheeled vehicle is further provided, including the power supply system in the above embodiment.

[0065] In the above embodiment, the compatibility of the new and old version batteries is realized through the power supply circuit, and at the same time, it is not necessary to change the original motor controller of the electric two-wheeled vehicle, avoiding waste of costs.

[0066] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0067] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A power supply circuit, characterized in that: The power supply circuit comprises: Central control circuit; a first power supply path, wherein an input end of the first power supply path is used to be connected to a first voltage output port of an external battery, and an output end of the first power supply path is connected to the central control circuit; a second power supply path, wherein an input end of the second power supply path is used to be connected to a second voltage output port of an external battery, and an output end of the second power supply path is connected to the central control circuit; A power supply gating circuit, the power supply gating circuit is connected to the first power supply path and is used to connect to the second voltage output port. When the power supply gating circuit can detect the voltage output by the second voltage output port, the power supply gating circuit controls the first power supply path to be turned off, so that the external battery can supply power to the central control circuit through the second voltage output port and the second power supply path. When the power supply gating circuit cannot detect the voltage output by the second voltage output port, the power supply gating circuit controls the first power supply path to be closed, so that the external battery can supply power to the central control circuit through the first voltage output port and the first power supply path.

2. The power supply circuit according to claim 1, characterized in that: The voltage outputted by the first voltage output port is different from the voltage outputted by the second voltage output port.

3. The power supply circuit according to claim 1, characterized in that: The voltage outputted by the first voltage output port is 48V, and the voltage outputted by the second voltage output port is 33V.

4. The power supply circuit according to claim 1, characterized in that: The first power supply path includes a controller circuit and a gate switch.

5. The power supply circuit according to claim 4, characterized in that: The first power supply path includes a first diode.

6. The power supply circuit according to claim 1, characterized in that: The second power supply path includes a second diode.

7. The power supply circuit according to claim 4, characterized in that: The power supply gating circuit includes a voltage detection circuit and a switch control circuit; The switch control circuit is connected to the selection switch, and the voltage detection circuit is connected to the switch control circuit. The voltage detection circuit is used to connect to the second voltage output port. When the voltage detection circuit can detect the voltage output by the second voltage output port, the switch control circuit controls the selection switch to be turned off, so that the external battery can supply power to the central control circuit through the second voltage output port and the second power supply path; when the voltage detection circuit cannot detect the voltage output by the second voltage output port, the switch control circuit controls the selection switch to be closed, so that the external battery can supply power to the central control circuit through the first voltage output port and the first power supply path.

8. The power supply circuit according to any one of claims 1 to 5, characterized in that: The power supply circuit also includes a voltage conversion circuit; The input end of the voltage conversion circuit is connected to the first power supply path and the second power supply path; The output end of the voltage conversion circuit is connected to the central control circuit.

9. A power supply system, characterized in that: The invention comprises a power supply circuit and a battery as claimed in any one of claims 1 to 8.

10. A two-wheeled vehicle, characterized in that: Comprising the power supply system as claimed in claim 9.

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