Portable DC interactive charger and electric bicycle

Abstract

The present application discloses a portable DC interactive charger and an electric bicycle. The portable DC interactive charger includes a protective shell, a first charge and discharge connection interface, a second charge and discharge connection interface, and a charge and discharge control circuit. The charge and discharge control circuit includes a boost circuit and a discharge circuit, and the first and second charge and discharge connection interfaces both include a DC plug electrically connected to the boost circuit or the discharge circuit disposed in the protective shell through a DC conductor. When two electric vehicles charge each other, the charge and discharge control circuit boosts the DC power output by the discharged electric vehicle and outputs it to the charged electric vehicle. Since the portable DC interactive charger can obtain charging power from other electric vehicles, the charging channels and methods of electric bicycles or electric motorcycles are expanded, greatly alleviating the hot issue of insufficient charging positions due to the limited number of charging piles.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a portable DC interactive charger and an electric bicycle. Background Art

[0002] Electric bicycles and electric motorcycles have many advantages such as being economical, practical, environmentally friendly, convenient and suitable for family use. They have become the first choice for many families for short-distance travel, and their social ownership is increasing rapidly. Since electric bicycles need to be charged, but the increase in the number of fixed charging piles is far from matching the growth in the number of electric bicycles, the problem of difficulty in charging electric vehicles has become an objective social problem. At present, the problem of charging difficulties is alleviated by building more charging piles or replacing batteries. However, in the actual use of electric vehicles, there are other more complex technical problems regarding the charging of electric vehicles. For example, the battery is low during use, especially as the electric vehicle ages, the accuracy of the remaining power display function becomes lower and lower, and sudden power outages often occur during driving. How to solve the problem of charging electric vehicles in scenarios where charging is inconvenient is an important direction for the production and research and development of electric vehicles. Summary of the invention

[0003] The present application provides a portable charging and discharging adapter to expand the charging methods of electric bicycles and electric motorcycles.

[0004] According to the first aspect, an embodiment provides a portable DC interactive charger for interactive charging between electric bicycles or electric motorcycles, including a protective housing, a first charging and discharging connection interface, a second charging and discharging connection interface, and a charging and discharging control circuit;

[0005] The charge and discharge control circuit is arranged in the protective housing, and the charge and discharge control circuit includes a boost circuit and a discharge circuit;

[0006] The first charge-discharge connection interface and the second charge-discharge connection interface both include at least one DC plug; the DC plug is electrically connected to the boost circuit or the discharge circuit disposed in the protective housing through a DC wire, and the DC plugs of the first charge-discharge connection interface and the second charge-discharge connection interface are respectively used to connect to the charge-discharge connection interface of an electric bicycle and / or an electric motorcycle;

[0007] When an electric bicycle or electric motorcycle charges another electric bicycle or electric motorcycle, the DC plug of the first charge and discharge connection interface or the second charge and discharge connection interface is connected to the charge and discharge connection interface of the discharging electric bicycle or electric motorcycle, and the DC plug of the second charge and discharge connection interface or the first charge and discharge connection interface is connected to the charge and discharge connection interface of the charging electric bicycle or electric motorcycle; the first charge and discharge connection interface or the second charge and discharge connection interface is used to output the first DC power output by the discharging electric bicycle or electric motorcycle to the boost circuit, the boost circuit is used to obtain the second DC power after boosting the first DC power, and the discharge circuit is used to output the second DC power to the charge and discharge connection interface of the charging electric bicycle or electric motorcycle through the second charge and discharge connection interface or the DC plug of the first charge and discharge connection interface, so as to output charging power to the charging electric bicycle or electric motorcycle.

[0008] In one embodiment, the charge and discharge control circuit also includes a discharge judgment circuit, which is respectively connected to the first charge and discharge connection interface and the second charge and discharge connection interface, and the discharge judgment circuit is used to determine whether the electric bicycle or electric motorcycle connected for discharge is the first charge and discharge connection interface or the second charge and discharge connection interface, and electrically connect the first charge and discharge connection interface or the second charge and discharge connection interface of the electric bicycle or electric motorcycle connected for discharge to the boost circuit, and electrically connect the first charge and discharge connection interface or the second charge and discharge connection interface of the electric bicycle or electric motorcycle connected for charging to the discharge circuit.

[0009] In one embodiment, the first charge and discharge connection interface includes at least two DC plugs, and the plug types of the DC plugs of each of the first charge and discharge connection interfaces are different.

[0010] In one embodiment, each DC plug of the first charging and discharging connection interface is provided with a first electrical connection indicator light, and the first electrical connection indicator light is used to indicate whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected.

[0011] In one embodiment, the second charge and discharge connection interface includes at least two DC plugs, and the plug types of the DC plugs of each of the second charge and discharge connection interfaces are different.

[0012] In one embodiment, each DC plug of the second charge and discharge connection interface is provided with a second electrical connection indicator light, and the second electrical connection indicator light is used to indicate whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected.

[0013] In one embodiment, the portable DC interactive charger further includes a working indicator light, which is disposed on the protective shell and electrically connected to the discharge circuit; the working indicator light is used to identify the working status of the portable DC interactive charger.

[0014] According to the second aspect, an embodiment provides an electric bicycle, comprising an on-board battery, a charge and discharge connection interface, and a charge and discharge setting circuit; the charge and discharge setting circuit is connected between the on-board battery and the charge and discharge connection interface;

[0015] The charging and discharging connection interface is used to connect to another electric bicycle or electric motorcycle through the portable DC interactive charger as described in the first aspect;

[0016] When the electric bicycle is being charged, the charge and discharge setting circuit is used to use the direct current input from the charge and discharge connection interface as a charging power source to charge the on-board battery;

[0017] When the electric bicycle is discharging, the DC power output by the onboard battery is output through the charge and discharge connection interface.

[0018] In one embodiment, the electric bicycle further includes a charge and discharge control switch connected to the charge and discharge setting circuit; when the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

[0019] In one embodiment, the electric bicycle further includes a power monitoring circuit for monitoring the power level of the onboard battery of the electric bicycle. When the power level of the onboard battery is greater than a preset value and the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

[0020] The portable DC interactive charger according to the above embodiment can obtain charging power from other electric vehicles, so that the charging channels and charging methods of electric bicycles or electric motorcycles are expanded, which greatly alleviates the hot spot problem of insufficient charging positions caused by the limited number of charging piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the appearance of a portable charging and discharging adapter in an embodiment;

[0022] Figure 2 A structural block diagram of a charge and discharge control unit in an embodiment;

[0023] Figure 3 A schematic diagram of the circuit structure of a portable DC interactive charger in an embodiment;

[0024] Figure 4 A structural block diagram of an interactive vehicle-mounted battery charging system in an embodiment;

[0025] Figure 5 Schematic diagram of the connection framework of a vehicle battery in an embodiment. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0028] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0029] In an embodiment of the present application, a method is adopted in which electric bicycles and / or electric motorcycles can charge each other to expand the charging channels and charging methods of electric bicycles or electric motorcycles, so as to alleviate the problem of insufficient charging positions caused by the limited number of charging piles.

[0030] Embodiment 1

[0031] Please refer to Figure 1, is a schematic diagram of the appearance of a portable charging and discharging adapter in an embodiment, the portable charging and discharging adapter is used to charge electric bicycles and / or electric motorcycles, and specifically includes a first shell 10, a charging and discharging interface, an AC input interface, an AC output interface and a charging and discharging control unit. The AC input interface includes an AC plug 21 and an AC power cord 22, and the AC plug 21 is connected to the first shell 10 through the AC power cord 22. The AC plug 21 is used to be adapted to be connected to a socket that outputs a first alternating current, so as to transmit the first alternating current to the charging and discharging control unit through the AC power cord 22. The charging and discharging control unit is arranged in the first shell 10, and the charging and discharging control unit is electrically connected to the AC plug 21 through the AC power cord 22, and the charging and discharging control unit is used to convert the first alternating current into a first direct current. The charging and discharging interface includes a DC plug 32 and a DC power line 31. The DC plug 32 is electrically connected to the charging and discharging control unit through the DC power line 31. The DC plug 32 is used to adapt and connect to the charging and discharging interface of the electric bicycle and / or electric motorcycle, and output the first DC power converted by the charging and discharging control unit to the electric bicycle and / or electric motorcycle, so as to provide the electric bicycle and / or electric motorcycle with DC power for charging the on-board battery. When there is no AC input to the AC plug 21 and the on-board battery of the electric bicycle and / or electric motorcycle outputs a second DC power that is opposite to the first DC power to the charging and discharging control unit through the DC plug 32, the charging and discharging control unit is also used to convert the second DC power into a second AC power. The AC output interface includes an AC output socket 41 arranged on the first housing, the AC output socket 41 is connected to the charging and discharging control unit, and is used to output the second AC power to provide AC power to the electrical equipment connected to the AC output socket 41.

[0032] In one embodiment, when AC power is input to the AC plug 21 and the vehicle-mounted battery does not output the second DC power to the charge and discharge control unit through the DC plug 32, the charge and discharge control unit is also used to output the first AC power through the AC output socket 41, so as to output the first AC power as the second DC power through the AC output socket 41, so as to achieve the expansion connection of multiple electric bicycles and / or electric motorcycles, which can solve the problem of few AC power output interfaces of the charging pile. The AC charging interface of a charging pile can be connected in series with multiple electric bicycles and / or electric motorcycles in sequence through a portable charge and discharge adapter for simultaneous charging.

[0033] In one embodiment, a protective cover 42 is provided on the AC power output socket 41 to protect the AC power output socket 41 from dust and water. In one embodiment, the AC power output socket 42 is a female plug, that is, the AC plug 21 and the AC power output socket 41 can be connected to each other, so that two different electric bicycles and / or electric motorcycles using the same model of portable charging and discharging adapter can charge each other.

[0034] Please refer to Figure 2 , is a structural block diagram of a charge and discharge control unit in an embodiment, the charge and discharge control unit 50 includes a rectifier circuit 51, connected between the AC input interface 20 and the charge and discharge interface 30, for converting the first AC power into the first DC power. The charge and discharge control unit 50 also includes an inverter circuit 52, connected between the AC output interface 40 and the charge and discharge interface 30, for converting the second DC power into the second AC power. In one embodiment, the voltage of the first AC power and / or the second AC power is 220V or 110V.

[0035] In one embodiment of the present application, an electric bicycle is also disclosed, including an on-board battery, a charge and discharge connection interface, and a charge and discharge setting circuit. The charge and discharge connection interface is used to be connected to a socket outputting a first alternating current through the portable charge and discharge adapter as described above, or to be connected to another electric bicycle or electric motorcycle. The charge and discharge setting circuit is connected between the on-board battery and the charge and discharge connection interface. When the electric bicycle is charged, the charge and discharge setting circuit is used to charge the on-board battery with the direct current input by the charge and discharge connection interface as a charging power source, and when the electric bicycle is discharged, the direct current power output by the on-board battery is output through the charge and discharge connection interface. In one embodiment, the electric bicycle also includes a charge and discharge control switch connected to the charge and discharge setting circuit. When the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current. In one embodiment, the electric bicycle also includes a power monitoring circuit for monitoring the power of the on-board battery of the electric bicycle. When the power of the on-board battery is greater than a preset value and the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

[0036] In this embodiment, an electric bicycle or electric motorcycle is charged by a portable charging and discharging adapter, and the charging power source of the portable charging and discharging adapter includes an AC power source and another electric bicycle or electric motorcycle. When obtaining charging power from another electric bicycle or electric motorcycle, the DC power output by the other electric bicycle or electric motorcycle is first converted into AC power, and then the electric bicycle or electric motorcycle is charged by a conventional power adapter. Since the parking position of electric bicycles and electric motorcycles is more flexible, the charging methods and charging scenarios of electric bicycles or electric motorcycles can be greatly expanded.

[0037] Embodiment 2:

[0038] Although the electric bicycle or electric motorcycle can be charged mutually in the first embodiment, providing a better charging expansion mode, it consumes a lot of electric energy because of the need for AC to DC conversion. Based on the above reasons, a portable DC-to-DC interactive charger is disclosed in this embodiment.

[0039] Please refer to Figure 3 , is a schematic diagram of the circuit structure of a portable DC interactive charger in an embodiment. The portable DC interactive charger is used for interactive charging between electric bicycles or electric motorcycles. The portable DC interactive charger includes a protective shell 1, a first charge and discharge connection interface 60, a second charge and discharge connection interface 70, and a charge and discharge control circuit 80. The charge and discharge control circuit 80 is arranged in the protective shell 1, and the charge and discharge control circuit 80 includes a boost circuit 81 and a discharge circuit 82. The first charge and discharge connection interface 60 and the second charge and discharge connection interface 70 both include at least one DC plug 61, and the DC plug 61 is electrically connected to the boost circuit 82 or the discharge circuit 81 arranged in the protective shell 1 through a DC wire 62. The DC plugs 61 of the first charge and discharge connection interface 60 and the second charge and discharge connection interface 70 are respectively used to connect to the charge and discharge connection interface 2 of an electric bicycle and / or electric motorcycle. When an electric bicycle or electric motorcycle charges another electric bicycle or electric motorcycle, the DC plug 61 of the first charge and discharge connection interface 60 or the second charge and discharge connection interface 70 is connected to the charge and discharge connection interface 2 of the discharged electric bicycle or electric motorcycle, and the DC plug 61 of the second charge and discharge connection interface 70 or the first charge and discharge connection interface 60 is connected to the charge and discharge connection interface 2 of the charged electric bicycle or electric motorcycle. The first charge and discharge connection interface 60 or the second charge and discharge connection interface 70 is used to output the first DC power output by the discharged electric bicycle or electric motorcycle to the boost circuit 82. The boost circuit 82 is used to obtain the second DC power after boosting the first DC power. The discharge circuit 81 is used to output the second DC power to the charge and discharge connection interface 2 of the charged electric bicycle or electric motorcycle through the second charge and discharge connection interface 70 or the DC plug 61 of the first charge and discharge connection interface 60, so as to output charging power to the charged electric bicycle or electric motorcycle.

[0040] In one embodiment, the charge and discharge control circuit 80 also includes a discharge judgment circuit 83, which is respectively connected to the first charge and discharge connection interface 60 and the second charge and discharge connection interface 70. The discharge judgment circuit 83 is used to determine whether the electric bicycle or electric motorcycle connected for discharge is the first charge and discharge connection interface 60 or the second charge and discharge connection interface 70, and electrically connects the first charge and discharge connection interface 60 or the second charge and discharge connection interface 70 of the electric bicycle or electric motorcycle connected for discharge to the boost circuit 82, and electrically connects the first charge and discharge connection interface 60 or the second charge and discharge connection interface 70 of the electric bicycle or electric motorcycle connected for charging to the discharge circuit 81.

[0041] In one embodiment, the first charge and discharge connection interface 60 includes at least two DC plugs, and the plug types of the DC plugs of each first charge and discharge connection interface 60 are different. In one embodiment, each DC plug 61 of the first charge and discharge connection interface 60 is provided with a first electrical connection indicator light, and the first electrical connection indicator light is used to identify whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected. In one embodiment, the second charge and discharge connection interface 70 includes at least two DC plugs, and the plug types of the DC plugs 61 of each second charge and discharge connection interface 70 are different. Each DC plug 61 of the second charge and discharge connection interface 70 is provided with a second electrical connection indicator light, and the second electrical connection indicator light is used to identify whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected.

[0042] In one embodiment, the portable DC interactive charger further includes a working indicator light, which is disposed on the protective housing 1 and electrically connected to the discharge circuit 81 , and the working indicator light is used to identify the working state of the portable DC interactive charger.

[0043] In one embodiment of the present application, an electric bicycle is also disclosed, including an on-board battery, a charge and discharge connection interface, and a charge and discharge setting circuit, the charge and discharge setting circuit is connected between the on-board battery and the charge and discharge connection interface, and the charge and discharge connection interface is used to connect to another electric bicycle or electric motorcycle through a portable DC interactive charger as described in Example 2. When the electric bicycle is charging, the charge and discharge setting circuit is used to charge the on-board battery with the direct current input by the charge and discharge connection interface as a charging power source. When the electric bicycle is discharging, the direct current power output by the on-board battery is output through the charge and discharge connection interface. In one embodiment, the electric bicycle also includes a charge and discharge control switch connected to the charge and discharge setting circuit, and when the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current. In one embodiment, the electric bicycle also includes a power monitoring circuit for monitoring the power of the on-board battery of the electric bicycle, and when the power of the on-board battery is greater than a preset value and the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

[0044] In this embodiment, an electric bicycle or electric motorcycle is charged by a portable DC interactive charger. The charge and discharge control circuit in the portable DC interactive charger includes a boost circuit and a discharge circuit. The DC power output by the discharged electric bicycle or electric motorcycle is boosted to charge the charged electric bicycle or electric motorcycle. The connection method is convenient and eliminates the energy loss of AC inverter.

[0045] The present embodiment discloses a portable DC interactive charger, including a protective shell, a first charge and discharge connection interface, a second charge and discharge connection interface, and a charge and discharge control circuit. The charge and discharge control circuit includes a boost circuit and a discharge circuit, and the first and second charge and discharge connection interfaces both include a DC plug electrically connected to the boost circuit or the discharge circuit disposed in the protective shell through a DC conductor. When two electric vehicles charge each other, the charge and discharge control circuit boosts the DC power output by the discharged electric vehicle and outputs it to the charged electric vehicle. Since the portable DC interactive charger can obtain charging power from other electric vehicles, the charging channels and methods of electric bicycles or electric motorcycles are expanded, greatly alleviating the hot issue of insufficient charging positions due to the limited number of charging piles.

[0046] Embodiment three:

[0047] In both Embodiment 1 and Embodiment 2, a charging method for realizing interactive charging of electric bicycles and / or electric motorcycles is provided. However, in practical applications, the electric bicycles and / or electric motorcycles are required to have the function of discharging the on-board batteries. In this embodiment, an interactive on-board battery charging system is disclosed for realizing interactive charging of electric bicycles and / or electric motorcycles.

[0048] Please refer to Figure 4 , is a structural block diagram of an interactive vehicle-mounted battery charging system in an embodiment, the interactive vehicle-mounted battery charging system includes a vehicle-mounted battery 4 and a portable charging device 5, wherein the vehicle-mounted battery 4 is arranged on an electric bicycle or electric motorcycle, and is used to provide driving power to the electric bicycle or electric motorcycle, and the portable charging device 5 is used to connect an electric bicycle or electric motorcycle 7 through the charging and discharging connection interface 2 of the electric bicycle or electric motorcycle, so as to output direct current for charging to the external electric bicycle or electric motorcycle 7 through the portable charging device 5, or obtain direct current power for charging the vehicle-mounted battery 4 from the external electric bicycle or electric motorcycle 7. The interactive vehicle-mounted battery charging system also includes a charging and discharging setting circuit 6 arranged on the electric bicycle or electric motorcycle, and the charging and discharging setting circuit 6 is connected between the vehicle-mounted battery 4 and the charging and discharging connection interface 2. When charging the electric bicycle or electric motorcycle of the interactive vehicle-mounted battery charging system, the charging and discharging setting circuit 6 is used to use the direct current input from the charging and discharging connection interface 2 as a charging power to charge the vehicle-mounted battery 4; when charging the external electric bicycle or electric motorcycle 7, the direct current power output from the vehicle-mounted battery 4 is output through the charging and discharging connection interface 2.

[0049] In one embodiment, the interactive vehicle battery charging system further includes a charge and discharge control switch 8 connected to the charge and discharge setting circuit 6. When the charge and discharge control switch 8 is turned on, the charge and discharge connection interface 2 outputs direct current for charging an external electric bicycle or electric motorcycle 7. In one embodiment, the interactive vehicle battery charging system further includes a power monitoring circuit 9 for monitoring the power of the vehicle battery 4. When the power of the vehicle battery 4 is greater than a preset value and the charge and discharge control switch 8 is turned on, the charge and discharge connection interface 2 outputs direct current.

[0050] Please refer to Figure 5 , is a schematic diagram of a connection frame of a vehicle-mounted battery in an embodiment. In one embodiment, the vehicle-mounted battery includes a first battery pack 41 and a second battery pack 42, and the power monitoring circuit 9 is used to monitor the power of the first battery pack 41 and the second battery pack 42 respectively. When the power of the second battery pack 42 is greater than a first preset power value, only the second battery pack 42 provides electric energy driving force to the load circuit 91 of the electric bicycle or electric motorcycle. When the power of the second battery pack 42 is not greater than the first preset power value, only the first battery pack 41 provides electric energy driving force to the load circuit 91 of the electric bicycle or electric motorcycle. The use of two different battery packs is to prioritize the normal driving of the electric bicycle or electric motorcycle and retain the best discharge effect. In one embodiment, only the first battery pack 41 is used as a charging power source for charging an external electric bicycle or electric motorcycle. In one embodiment, when the power of the first battery pack 41 is not greater than a second preset power value, the charging power source for charging the external electric bicycle or electric motorcycle is stopped.

[0051] In one embodiment, the portable charging device is the portable DC interactive charger described in Embodiment 2, including a protective shell, a first charge and discharge connection interface, a second charge and discharge connection interface, and a charge and discharge control circuit. The charge and discharge control circuit is arranged in the protective shell, and the charge and discharge control circuit includes a DC boost circuit and a discharge circuit. The first charge and discharge connection interface and the second charge and discharge connection interface both include at least one DC plug, and the DC plug is electrically connected to the DC boost circuit or the discharge circuit arranged in the protective shell through a DC conductor. The DC plugs of the first charge and discharge connection interface and the second charge and discharge connection interface are respectively used to connect the charge and discharge connection interface of an electric bicycle and / or electric motorcycle. When an electric bicycle or electric motorcycle charges another electric bicycle or electric motorcycle, the DC plug of the first charge and discharge connection interface or the second charge and discharge connection interface is connected to the charge and discharge connection interface of the electric bicycle or electric motorcycle being discharged, and the DC plug of the second charge and discharge connection interface or the first charge and discharge connection interface is connected to the charge and discharge connection interface of the electric bicycle or electric motorcycle being charged. The first charge and discharge connection interface or the second charge and discharge connection interface is used to output the first direct current output by the discharging electric bicycle or electric motorcycle to the boost circuit, the boost circuit is used to obtain the second direct current after boosting the first direct current, and the discharge circuit is used to output the second direct current through the DC plug of the second charge and discharge connection interface or the first charge and discharge connection interface to the charge and discharge connection interface of the charging electric bicycle or electric motorcycle, so as to output charging power to the charging electric bicycle or electric motorcycle.

[0052] In one embodiment, the portable charging device is the portable charging and discharging adapter described in the first embodiment, including a first housing, a charging and discharging connection interface, an AC input interface, an AC output interface, and a charging and discharging control unit. The AC input interface includes an AC plug and an AC power line, the AC plug is connected to the first housing through the AC power line, and the AC plug is used to be adapted to be connected with a socket outputting the first AC power, so as to transmit the first AC power to the charging and discharging control unit through the AC power line. The charging and discharging control unit is arranged in the first housing, the charging and discharging control unit is electrically connected to the AC plug through the AC power line, and the charging and discharging control unit is used to convert the first AC power into the first DC power. The charging and discharging connection interface includes a DC plug and a DC power line, the DC plug is electrically connected to the charging and discharging control unit through the DC power line, and the DC plug is used to be adapted to be connected with the charging and discharging interface of the electric bicycle and / or the electric motorcycle, and the first DC power converted and obtained by the charging and discharging control unit is output to the electric bicycle and / or the electric motorcycle, so as to provide the electric bicycle and / or the electric motorcycle with DC power for charging the vehicle battery. When there is no AC input to the AC plug and the onboard battery of the electric bicycle and / or electric motorcycle outputs a second DC power which is opposite to the first DC power to the charge and discharge control unit through the DC plug, the charge and discharge control unit is further used to convert the second DC power into a second AC power. The AC output interface includes an AC output socket provided on the first housing, the AC output socket is connected to the charge and discharge control unit, and is used to output the second AC power to provide AC power to the electrical equipment connected to the AC output socket.

[0053] like Figure 5 As shown, the charge and discharge setting circuit in one embodiment includes a charge and discharge management controller 61 and a charge and discharge switching circuit 62. The charge and discharge switching circuit 62 is connected to the charge and discharge control switch 8. When the charge and discharge control switch 8 is turned on, the charge and discharge switching circuit 62 electrically connects the first battery pack 41 to the charge and discharge connection interface 2 to output direct current for charging an external electric bicycle or electric motorcycle. The power monitoring circuit 9 includes a first monitoring circuit and a second monitoring circuit. The first monitoring circuit is used to monitor the power value of the first battery pack 41, and the second monitoring circuit is used to monitor the power value of the second battery pack 42. The charge and discharge management controller 61 is connected to the first monitoring circuit, the second monitoring circuit and the charge and discharge switching circuit 62 respectively. The charge and discharge management controller 61 is used to control the charge and discharge state of the first battery pack 41 and the second battery pack 42 through the charge and discharge switching circuit 62 according to the power values ​​of the first battery pack 41 and the second battery pack 42. In one embodiment, the interactive vehicle battery charging system also includes a charge and discharge protection energy storage battery 92, which is connected in parallel to the first battery group 41 or the second battery group 42 when the first battery group 41 and the second battery group 42 are switched between charge and discharge, so as to provide over-voltage and under-voltage protection for the charge and discharge switching process of the first battery group 41 and the second battery group 42.

[0054] In one embodiment of the present application, an interactive vehicle-mounted battery charging method is also disclosed, which is used for being applied to the interactive vehicle-mounted battery charging system as described in the third embodiment to interactively charge an electric bicycle and / or an electric motorcycle. The interactive vehicle-mounted battery charging method includes:

[0055] Step 1: electrically connect two electric vehicles via a portable charging device, wherein the electric vehicles are electric bicycles or electric motorcycles.

[0056] Step 2: switch one electric vehicle to a discharge mode and switch another electric vehicle to a charge mode.

[0057] Step three: interactively charge electric vehicles using a portable charging device.

[0058] The interactive vehicle-mounted battery charging system disclosed in this embodiment includes a vehicle-mounted battery and a portable charging device, wherein the vehicle-mounted battery is arranged on an electric bicycle or electric motorcycle, and is used to provide driving power to the electric bicycle or electric motorcycle. The portable charging device is used to connect an electric bicycle or electric motorcycle to an external electric bicycle or electric motorcycle through the charging and discharging connection interface of the electric bicycle or electric motorcycle, so as to charge the external electric bicycle or electric motorcycle through the portable charging device, or obtain power for charging the vehicle-mounted battery from the external electric bicycle or electric motorcycle. Since the portable charging device can obtain charging power from other electric vehicles, the charging channels and charging methods of electric bicycles or electric motorcycles are expanded, which greatly alleviates the hot issue of insufficient charging positions caused by the limited number of charging piles.

[0059] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A portable DC interactive charger for interactive charging between electric bicycles or electric motorcycles, characterized in that: It includes a protective shell, a first charge and discharge connection interface, a second charge and discharge connection interface and a charge and discharge control circuit; The charge and discharge control circuit is arranged in the protective housing, and the charge and discharge control circuit includes a boost circuit and a discharge circuit; The first charge-discharge connection interface and the second charge-discharge connection interface both include at least one DC plug; the DC plug is electrically connected to the boost circuit or the discharge circuit disposed in the protective housing through a DC wire, and the DC plugs of the first charge-discharge connection interface and the second charge-discharge connection interface are respectively used to connect to the charge-discharge connection interface of an electric bicycle and / or an electric motorcycle; When an electric bicycle or electric motorcycle charges another electric bicycle or electric motorcycle, the DC plug of the first charge and discharge connection interface or the second charge and discharge connection interface is connected to the charge and discharge connection interface of the discharging electric bicycle or electric motorcycle, and the DC plug of the second charge and discharge connection interface or the first charge and discharge connection interface is connected to the charge and discharge connection interface of the charging electric bicycle or electric motorcycle; the first charge and discharge connection interface or the second charge and discharge connection interface is used to output the first DC power output by the discharging electric bicycle or electric motorcycle to the boost circuit, the boost circuit is used to obtain the second DC power after boosting the first DC power, and the discharge circuit is used to output the second DC power to the charge and discharge connection interface of the charging electric bicycle or electric motorcycle through the second charge and discharge connection interface or the DC plug of the first charge and discharge connection interface, so as to output charging power to the charging electric bicycle or electric motorcycle.

2. The portable DC interactive charger according to claim 1, characterized in that: The charge and discharge control circuit also includes a discharge judgment circuit, which is respectively connected to the first charge and discharge connection interface and the second charge and discharge connection interface. The discharge judgment circuit is used to determine whether the electric bicycle or electric motorcycle connected for discharge is the first charge and discharge connection interface or the second charge and discharge connection interface, and electrically connects the first charge and discharge connection interface or the second charge and discharge connection interface of the electric bicycle or electric motorcycle connected for discharge to the boost circuit, and electrically connects the first charge and discharge connection interface or the second charge and discharge connection interface of the electric bicycle or electric motorcycle connected for charging to the discharge circuit.

3. The portable DC interactive charger according to claim 1, characterized in that: The first charge and discharge connection interface includes at least two DC plugs, and the plug types of the DC plugs of each of the first charge and discharge connection interfaces are different.

4. The portable DC interactive charger according to claim 3, characterized in that: Each DC plug of the first charging and discharging connection interface is provided with a first electrical connection indicator light, and the first electrical connection indicator light is used to indicate whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected.

5. The portable DC interactive charger according to claim 1, characterized in that: The second charge and discharge connection interface includes at least two DC plugs, and the plug types of the DC plugs of each of the second charge and discharge connection interfaces are different.

6. The portable DC interactive charger according to claim 5, characterized in that: Each DC plug of the second charge and discharge connection interface is provided with a second electrical connection indicator light, and the second electrical connection indicator light is used to indicate whether the electric bicycle or electric motorcycle is electrically connected or not electrically connected.

7. The portable DC interactive charger according to claim 1, characterized in that: It also includes a working indicator light, which is arranged on the protective shell and is electrically connected to the discharge circuit; the working indicator light is used to identify the working state of the portable DC interactive charger.

8. An electric bicycle, characterized in that: It includes a vehicle-mounted battery, a charge-discharge connection interface and a charge-discharge setting circuit; the charge-discharge setting circuit is connected between the vehicle-mounted battery and the charge-discharge connection interface; The charging and discharging connection interface is used to connect to another electric bicycle or electric motorcycle through the portable DC interactive charger according to any one of claims 1 to 7; When the electric bicycle is being charged, the charge and discharge setting circuit is used to use the direct current input from the charge and discharge connection interface as a charging power source to charge the on-board battery; When the electric bicycle is discharging, the DC power output by the onboard battery is output through the charge and discharge connection interface.

9. The electric bicycle according to claim 8, characterized in that: It also includes a charge and discharge control switch connected to the charge and discharge setting circuit; when the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

10. The electric bicycle according to claim 9, characterized in that: It also includes a power monitoring circuit for monitoring the power of the onboard battery of the electric bicycle. When the power of the onboard battery is greater than a preset value and the charge and discharge control switch is turned on, the charge and discharge connection interface outputs direct current.

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