Power system and electric moped

Abstract

The utility model provides a power system and an electric moped. The power system comprises a power generation module, an energy storage module and a driving module, the power generation module is electrically connected with the energy storage module and the driving module and is used for providing electric energy for the energy storage module and / or the driving module; the energy storage module is electrically connected with the driving module and used for providing electric energy for the driving module. The driving mileage of the electric-energy-driven vehicle can be prolonged, so that the electric-energy-driven vehicle can adapt to different use scenes, and the electric-energy-driven vehicle has the advantages of being energy-saving, environment-friendly and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle driving, and in particular to a power system. The utility model also relates to an electric power-assisted vehicle comprising the power system. Background Art

[0002] Electric bicycles, also known as electric power-assisted bicycles or electric two-wheeled bicycles, are a type of transportation that uses batteries as energy storage components and motors as driving components. Electric bicycles are economical, energy-saving and environmentally friendly, not restricted by urban traffic environments, low noise, high safety, and a wide range of applications. Compared with traditional bicycles, motorcycles and other transportation tools, they have many advantages, making them an ideal choice for short-distance travel in cities.

[0003] At present. The batteries used for energy storage components of electric bicycles are generally divided into two types: lithium batteries and lead-acid batteries. Lithium batteries have high energy density, light weight, fast charging speed, but high cost. Moreover, the electrode properties of lithium batteries are active. Once the lithium battery shell is broken, there is a risk of violent combustion or even explosion. This phenomenon has a negative impact on the driving safety of electric bicycles. Therefore, more and more electric vehicles choose lead-acid batteries with higher inertness of electrode materials and safer and more stable properties as energy storage components. However, the electrode plates of lead-acid batteries are heavy and the overall energy density is lower than that of lithium batteries. This results in the heavy structure and short cruising range of electric bicycles using lead-acid batteries. When the lead-acid battery is in an undervoltage state with low capacity, it will have a greater impact on the driving speed of the electric bicycle. Moreover, the charging time of lead-acid batteries is long. These phenomena will cause inconvenience to electric bicycle users.

[0004] From the above background technology, it can be known that electric bicycles using lead-acid batteries as energy storage elements have the disadvantages of inconvenient charging and short cruising range. Utility Model Content

[0005] In view of this, the utility model aims to provide a power system that can increase the cruising range of an electric bicycle and solve the problem of inconvenient charging of the electric bicycle.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A power system of the utility model includes a power generation module, an energy storage module and a drive module;

[0008] The power generation module is electrically connected to the energy storage module and the driving module, and is used to provide electrical energy to the energy storage module and / or the driving module;

[0009] The energy storage module is electrically connected to the driving module and is used to provide electrical energy to the driving module.

[0010] Furthermore, the power generation module includes a generator and a rectifier provided on the generator;

[0011] The rectifier is electrically connected to the generator, and is electrically connected to the energy storage module and the drive module, and can convert the alternating current generated by the generator into direct current that can be used by the energy storage module and the drive module.

[0012] Furthermore, the energy storage module includes a battery pack and a controller disposed on the battery pack;

[0013] The controller is electrically connected to the battery pack, and is electrically connected to the rectifier and the driving module, and is used to control and change the charge / discharge state of the battery pack.

[0014] Furthermore, the energy storage module also includes a power sensor;

[0015] The power sensor is electrically connected to the generator and the drive module, and is used to detect the output power of the generator and the power consumption of the drive module, and convert them into electrical signals and transmit them to the controller as a basis for the controller to control and change the charge / discharge state of the battery pack.

[0016] Further, the driving module includes a motor and a driving member;

[0017] The motor is electrically connected to the rectifier and the controller, and the power output end of the motor is connected to the driving member to drive the driving member to move. Compared with the prior art, the utility model has the following advantages:

[0018] The power system and electric-assisted vehicle described in the utility model include a power generation module, an energy storage module and a driving module. Among them, the energy storage module can store electric energy and supply power to the driving module, the driving module can operate under the action of the energy storage module, and the power generation module can charge the energy storage module and provide electric energy to the driving module. By introducing the power generation module, an additional power supply method can be provided for the driving module, so as to cope with different actual situations. The power generation module can also make the charging process of the energy storage module no longer limited by the motion state of the driving module, so that the vehicle using the above system can be charged in a moving state, thereby achieving the purpose of the invention of increasing the cruising range of the electric bicycle and solving the problem of inconvenient charging of the electric bicycle.

[0019] In addition, by configuring the power generation module as a combination of a rectifier and a generator, the rectifier can be used to convert the AC power generated by the generator into DC power that can charge the energy storage module and power the drive module.

[0020] Secondly, by setting the energy storage module as a combination of a battery pack and a controller, the battery pack can be used as an energy storage element to store the electric energy coming in and out of the outside world or coming from the power generation module. The controller can monitor the physical state of the battery pack, such as the power, temperature, and current, and control and switch the charge and discharge state of the battery pack.

[0021] Furthermore, by providing a power sensor electrically connected to the generator and the drive module, the output power of the generator and the power consumption of the drive module can be detected and compared, and then the comparison result is converted into an electrical signal and transmitted to the controller. The controller can determine the state required for the current situation based on the electrical signal of the power sensor and switch the charge and discharge state of the battery pack. By setting the drive module as a motor and a drive member, the drive member can generate movement under the action of the motor, thereby realizing the driving function. The motor can be powered by the battery pack of the energy storage module and the generator of the power generation module, so as to cope with different actual situations.

[0022] In addition, the utility model also proposes an electric power-assisted vehicle provided with the above power system. In addition, the electric power-assisted vehicle in the utility model also includes a vehicle body, and the driving component is arranged on the vehicle body.

[0023] Further, the vehicle body includes a drive rod;

[0024] The driving rod is connected to the kinetic energy input end of the generator and is used to drive the generator to rotate and generate electrical energy.

[0025] Furthermore, the driving member is a wheel, and the rotating shaft of the driving member is connected to the power output end of the motor.

[0026] Furthermore, the driving rod is detachably mounted on the power output end of the motor, and the driving rod can be arranged on the rotating shaft of the driving member to directly drive the driving member to rotate.

[0027] Furthermore, a speed sensor is provided on the vehicle body, and the speed sensor is electrically connected to the controller for detecting the speed change of the vehicle body and converting it into an electrical signal to transmit to the controller, which serves as a basis for the controller to control and change the charge / discharge state of the battery pack.

[0028] The electric power-assisted vehicle described in the utility model has the same beneficial effects as the power system described above relative to the prior art, and will not be described in detail here.

[0029] In addition, by arranging a driving rod on the vehicle body and arranging the driving rod at the kinetic energy input end of the generator, the user can drive the kinetic energy input end of the generator to rotate by driving the driving rod to rotate, thereby inputting external mechanical energy into the generator, which is converted into electrical energy by the generator and supplied to the energy storage module and the driving module. By arranging the driving member as a wheel whose axle is connected to the power output end of the motor, the driving member can rotate under the drive of the motor, thereby driving the vehicle body to move.

[0030] Secondly, by setting the installation method of the drive rod and the power output end of the motor in a detachable manner and enabling the drive rod to be directly installed on the drive member, the user can choose the driving method of the drive member according to actual conditions, thereby increasing the scope of application of the present application.

[0031] Furthermore, by setting up a speed sensor, the speed of the vehicle body and its speed change can be converted into electrical signals and transmitted to the controller. As the basis for the controller to control the switching of the battery pack's charge and discharge states, the battery pack's charge and discharge methods can be further optimized, increasing the overall cruising range. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the structure of the power system in the embodiment of the present application;

[0034] Figure 2 It is a schematic diagram of the structure of the electric power-assisted bicycle in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Power generation module;

[0037] 101. generator; 102. rectifier;

[0038] 2. Energy storage module;

[0039] 201, battery pack; 202, controller; 203, power sensor;

[0040] 3. Driver module;

[0041] 301, electric motor; 302, driving member;

[0042] 4. Car body;

[0043] 401. driving rod; 402. speed sensor. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0045] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] Taking a power system and an electric assisted vehicle described in the present utility model as an example, the directional words such as "up, down, left, right, front, and back" used in the embodiments are defined based on the up and down direction (also known as the height direction, or the Z direction of the whole vehicle), the left and right direction (also known as the width direction, or the Y direction of the whole vehicle), and the front and rear direction (also known as the length direction, or the X direction of the whole vehicle). "Inside and outside" are defined based on the contour of the corresponding parts. For example, "inside" and "outside" are defined based on the contour of the vehicle, and the side of the vehicle contour close to the middle of the vehicle is "inside", and the opposite is "outside".

[0047] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Embodiment 1

[0050] The present embodiment relates to a power system, which introduces a power generation module into the system so that the charging process of the energy storage module is no longer restricted by the state of the driving module, and can provide additional functional modes for the driving module, thereby achieving the purpose of increasing the cruising range of the electric bicycle and solving the problem of inconvenient charging of the electric bicycle.

[0051] In terms of overall structure, refer to Figure 1 and Figure 2 The power system of this embodiment includes a power generation module 1, an energy storage module 2 and a drive module 3. The power generation module 1 is electrically connected to the energy storage module 2 and the drive module 3 to realize the supply of electric energy. The power generation module 1 can supply power to the drive module 3 alone when the power of the energy storage module 2 is low. The energy storage module 2 can supply power to the drive module 3 alone, and can also cooperate with the power generation module 1 to supply power to the drive module 3 together.

[0052] Based on the above design concept, specifically, in this embodiment, refer to Figure 1 and Figure 2 The power generation module 1 includes a generator 101 and a rectifier 102. The generator 101 can convert the mechanical energy input from the outside into electrical energy. The rectifier 102 is connected to the power output terminal of the generator 101 and can convert the alternating current generated by the generator 101 into direct current. The power generation module 1 can output electrical energy to the energy storage module 2 and the drive module 3.

[0053] Reference Figure 1 and Figure 2 In order to store the electric energy input from the outside or generated by the power generation module 1 and to supply power to the driving module 3 under appropriate conditions, in this embodiment, the energy storage module 2 includes a battery pack 201 and a controller 202. The controller 202 is electrically connected to the battery pack 201. The controller 202 can be a control chip that integrates the BMS (battery management system) function and the sampling function, and can collect and monitor the power, current and voltage of the battery pack 201, and switch the charge and discharge state of the battery pack 201. When the power of the battery pack 201 is not full, the controller 202 controls the power generation module 1 to connect with the charging circuit of the battery pack 201, and the power generation module 1 can charge the battery pack 201. When the power of the battery pack 201 is full, the controller 202 controls the power generation module 1 to disconnect the charging circuit of the battery pack 201 to avoid safety problems caused by overcharging of the battery pack 201.

[0054] Reference Figure 1 and Figure 2In order to further optimize the charging and discharging mode of the battery pack 201, in this embodiment, the energy storage module 2 also includes a power sensor 203. The power sensor 203 can be a Hall sensor. The power sensor 203 is electrically connected to the generator 101 and the drive module 3, and can detect and compare the output power of the generator 101 and the power consumption of the drive module 3 and convert the comparison result into an electrical signal. The power sensor 203 and the controller 202 realize signal transmission through a wired or wireless connection, and can transmit the electrical signal to the controller 202. After receiving the electrical signal from the power sensor 203, the controller 202 uses the electrical signal as a basis. If the output power of the generator 101 is less than the power required by the drive module 3, the power supply circuit between the battery pack 201 and the drive module 3 is controlled to be turned on, so that the battery pack 201 can supply power to the drive module 3 to meet the power demand of the drive module 3. If the output power of the generator 101 is equal to the power required by the drive module 3 , the power supply circuit between the battery pack 201 and the drive module 3 is controlled to be disconnected to reduce the power consumption of the battery pack 201 and extend the battery life of the battery pack 201 .

[0055] Reference Figure 1 and Figure 2 , the driving module 3 in the embodiment of the present application includes a motor 301 and a driving member 302. Among them, the motor 301 is electrically connected to the energy storage module 2 and the power generation module 1. The motor 301 can operate under the direct current output by the rectifier 102, and can also operate under the direct current output by the battery pack 201. The driving member 302 is installed at the power output end of the motor 301, and can operate together with the motor 301 to transmit the mechanical energy of the motor 301 to the outside.

[0056] Embodiment 2

[0057] This embodiment relates to an electric assisted vehicle, including the power system described in the first embodiment.

[0058] In addition, the electric power-assisted vehicle in this embodiment further comprises a body 4. The power system is fixedly mounted on the body 4, and the body 4 serves to limit the installation of the power system.

[0059] Reference Figure 1 and Figure 2 In order to facilitate the input of mechanical energy to the generator 101, a driving rod 401 is installed on the vehicle body 4. One end of the driving rod 401 is connected to the power input end of the generator 101. The user can input mechanical energy into the generator 101 by driving the driving rod 401 to rotate, so that the generator 101 can convert the input mechanical energy into electrical energy and supply it to the energy storage module 2 and the driving module 3.

[0060] In addition, in order to further improve the scope of application of the present application and enrich the application scenarios of the present application, the drive rod 401 and the generator 101 can be connected by a threaded connection, a bolted connection or a plug-in connection, which can be detached. At the same time, the drive rod 401 can be installed on the drive member 302 by the above connection method to achieve the purpose of directly driving the drive member 302 to move.

[0061] In the embodiment of the present application, the driving member 302 may be a wheel rotatably arranged on the vehicle body 4. The wheel axle is connected to the power output shaft of the motor 301 via a coupling. A clutch may also be provided between the wheel and the motor 301. When the user chooses to use the driving member 302 to directly drive the driving member 302 to rotate, the clutch disconnects the wheel axle from the power output shaft of the engine, thereby reducing the rotation resistance of the driving member 302 and avoiding damage to the generator 101.

[0062] Reference Figure 2 In order to further optimize the power supply mode of the battery pack 201 and extend the battery life of the battery pack 201, a speed sensor 402 is also provided on the vehicle body 4. The speed sensor 402 and the controller 202 realize signal transmission through a wired or wireless connection. The speed sensor 402 can be used to detect the real-time speed and speed changes of the vehicle body 4, and convert them into electrical signals and transmit them to the controller 202. The controller 202 can control and switch the charge and discharge state of the battery pack 201 according to the speed change signal of the vehicle body 4. When the controller 202 receives a signal from the speed sensor 402 that the speed of the vehicle body 4 drops rapidly, the power supply circuit between the control battery pack 201 and the drive module 3 is disconnected to reduce the energy loss of the battery pack 201 during braking, thereby achieving the purpose of improving the battery life of the battery pack 201.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A power system, characterized in that: It includes power generation module, energy storage module and drive module; The power generation module is electrically connected to the energy storage module and the driving module, and is used to provide electrical energy to the energy storage module and / or the driving module; The energy storage module is electrically connected to the driving module and is used to provide electrical energy to the driving module.

2. The power system according to claim 1, characterized in that: The power generation module includes a generator and a rectifier arranged on the generator; The rectifier is electrically connected to the generator, and is electrically connected to the energy storage module and the drive module, and can convert the alternating current generated by the generator into direct current that can be used by the energy storage module and the drive module.

3. The power system according to claim 2, characterized in that: The energy storage module includes a battery pack and a controller provided on the battery pack; The controller is electrically connected to the battery pack, and is electrically connected to the rectifier and the driving module, and is used to control and change the charge / discharge state of the battery pack.

4. The power system according to claim 3, characterized in that: The energy storage module also includes a power sensor; The power sensor is electrically connected to the generator and the drive module, and is used to detect the output power of the generator and the power consumption of the drive module, and convert them into electrical signals and transmit them to the controller as a basis for the controller to control and change the charge / discharge state of the battery pack.

5. The power system according to any one of claims 3 to 4, characterized in that: The driving module includes a motor and a driving member; The motor is electrically connected to the rectifier and the controller, and the power output end of the motor is connected to the driving member for driving the driving member to move.

6. An electric power-assisted bicycle, characterized in that ； A power system is included, wherein the power system adopts the power system according to any one of claims 1 to 5; The vehicle body is provided with the driving member on the vehicle body.

7. The electric assisted vehicle according to claim 6, characterized in that: The vehicle body includes a drive rod; The driving rod is connected to the kinetic energy input end of the generator and is used to drive the generator to rotate and generate electrical energy.

8. The electric assisted vehicle according to claim 7, characterized in that: The driving member is a wheel, and the rotating shaft of the driving member is connected to the power output end of the motor.

9. The electric assisted vehicle according to claim 8, characterized in that: The driving rod is detachably mounted on the power output end of the motor, and the driving rod can be arranged on the rotating shaft of the driving member to directly drive the driving member to rotate.

10. The electric assisted vehicle according to claim 6, characterized in that: A speed sensor is provided on the vehicle body, and the speed sensor is electrically connected to the controller for detecting the speed change of the vehicle body and converting it into an electrical signal to transmit to the controller, which serves as a basis for the controller to control and change the charge / discharge state of the battery pack.

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