KR20220167632A - Cargo bike with replaceable battery, and self-generation control method while driving thereof, battery exchange station - Google Patents

Abstract

The present invention provides a cargo bike with a replaceable battery, a self-generation control method while driving a cargo bike with a replaceable battery, and a battery change system for a cargo bike. A cargo bike with a replaceable battery can maximize the convenience of energy supply. According to one embodiment of the present invention, a cargo bike with a replaceable battery includes: a main body unit including a bike body frame, a wheel installed in the bike body frame, a motor connected to the wheel and a replaceable battery, and a gear installed between the wheel and the motor and connected to a pedal to receive power from the motor or the pedal while underway; a cargo area installed on a front side of the main body unit; a battery-mounting holder arranged in the cargo area and having the replaceable battery attached to and detached from the battery-mounting holder; and a control unit connected to a gear connection adjusting unit adjusting a connection state of the gear and executing at least one among an electric power driving mode, a manual driving mode, and a combined driving mode by controlling the connection state of the gear on the motor or the pedal according to a driving mode, or controlling disconnection on the connection between the pedal and the gear or the connection between the gear and the wheel to execute a charging mode while the cargo bike is underway or stopped. The attached replaceable battery can be connected to the motor through a power line in the frame.

Description

Cargo bike equipped with replaceable battery and self-power generation control method while driving, battery exchange system

The present invention relates to an electric or hybrid cargo bike, and more particularly, to a cargo bike equipped with a replaceable battery, a method for controlling self-generation of the cargo bike while driving, and a battery exchange system.

By reversibly coupling a rechargeable battery pack to the electric bicycle, electricity to drive a motor of the electric bicycle may be supplied from the battery pack.

However, in the case of a conventional electric bicycle, it is sufficient to handle the weight of the bicycle and can be driven by installing a small battery pack, but when a large amount of luggage is loaded on the cargo with a separate cargo like a cargo bike, the Due to the considerable weight, a small battery pack alone is not sufficient for driving or the driving distance is very short.

In particular, since the rechargeable battery of an electric bicycle has a small capacity and a short mileage, it is difficult to travel more than a certain distance. there will be no bar

However, when a battery pack large enough to drive a cargo bike is installed, the amount of power required increases due to the weight of the battery pack itself, making it difficult to overcome the capacity limit of the battery pack.

Therefore, there is a need to provide enough power to drive the cargo bike without greatly increasing the size of the battery pack.

(Patent Document 1) KR1020170078666 A

In order to solve the conventional problems, the present invention is a cargo equipped with a replaceable battery, in which the replaceable battery installed in the cargo is recharged in real time by acquiring self-generated energy when the wheels are pedaled in the reverse direction even during inertia as well as during stoppage. It is intended to provide a self-power generation control method and a battery exchange system while driving a bike or cargo bike.

A cargo bike equipped with a replaceable battery according to a first aspect of the present invention includes a bike body frame, a wheel installed on the frame, a motor connected to the wheel and the replaceable battery, and installed between the wheel and the motor A body portion having a gear connected to a pedal and receiving power from the motor or pedal while driving; Cargo installed on the front part of the main body; a battery mounting holder disposed in the cargo and configured to attach or detach the replaceable battery; And it is connected to a gear connection control unit that adjusts the gear connection state, and performs at least one of an electric power driving mode, a manual driving mode, and a combined driving mode by controlling a gear connection state to the motor or pedal according to a driving mode, A control unit controlling disconnection of the connection between the gear and the wheel or the connection between the pedal and the gear to perform a charging mode during driving and stopping, and the attached replaceable battery connects the power line inside the frame. It can be connected to the motor through.

At this time, according to an embodiment of the present invention, when the gear detects reverse pedaling performed during driving and stopping of the cargo bike, the control unit releases the connection between the gear and the wheel to block wheel rotation power and reverse A first charging mode in which rotational force by pedaling is transmitted to the motor may be performed.

Alternatively, according to one embodiment of the present invention, a sensor for detecting the tilt of the cargo bike is further included, and when the tilt detected by the sensor is greater than a reference value or the speed of the gear is decelerated by a brake, the A second charging mode may be performed in which the connection between the pedal and the gear is disconnected and the rotational force of the wheel is transmitted to the motor through the gear.

Meanwhile, the battery mounting holder according to an embodiment of the present invention includes a two-way inverter internally connected to the attached replaceable battery when the replaceable battery is attached, and the motor and the motor through the two-way inverter and the power line. can be connected

In addition, the battery mounting holder according to an embodiment of the present invention is installed so that the replaceable battery is slidably coupled in a direction opposite to the driving direction of the cargo bike, and is disposed at the center of the battery mounting holder or the battery is mounted. Battery mounting holes disposed symmetrically on the left and right sides of the holder may be included.

In addition, the battery mounting holder according to an embodiment of the present invention includes a support member covering the replaceable battery and disposing a flat surface thereon to provide a seating space to the user in a state in which the replaceable battery is mounted. can do.

In addition, the motor according to an embodiment of the present invention may be an in-wheel motor installed inside the central axis of the wheel or a separate motor connected to a frame in which the wheel is installed.

A method for controlling self-power generation during driving of a cargo bike equipped with a replaceable battery according to a second aspect of the present invention includes a motor connected to a wheel and a gear that is installed between the wheel and the motor and receives power from the connected motor or pedal And, in a cargo bike including a cargo configured to attach and detach a replaceable battery that transmits power to the motor, the first power received from the motor or the first power transmitted from the pedal by controlling the connection between the motor and the gear or the pedal and the gear 2 a driving step in which the cargo bike travels by transmitting power to wheels through gears; And when the gear detects reverse pedaling performed during driving of the cargo bike, the control unit releases the connection between the gear and the wheel so that the wheel rotation power is cut off and the rotation force by reverse pedaling is transmitted to the motor. 1 When the charging mode is performed, or the slope detected by the sensor for detecting the slope of the cargo bike to detect downhill driving of the cargo bike is greater than a reference value or the speed of the gear is decelerated by the brake, the pedal and a driving power generation step of performing a second charging mode in which the gear is disconnected and the rotational force of the wheel is transmitted to the motor through the gear.

In addition, according to one embodiment of the present invention, when the cargo bike is stopped, the first charging mode may be performed when the gear senses reverse pedaling performed while the cargo bike is stopped. Self-power generation can be performed while the cargo bike is driving as well as when it is stopped.

A battery exchange system for a cargo bike according to a third aspect of the present invention includes a cargo bike equipped with the aforementioned replaceable battery; and a detection module for detecting a battery charge amount of the replaceable battery charged by self-powered generation by reverse pedaling, and a charge calculation module for calculating a charge corresponding to the detected charge amount of the battery; Including, a battery exchange device that exchanges with a battery; wherein the detection module measures the SOC variation value of the replaceable battery while the connection between the wheel and the gear or the connection between the pedal and the gear is cut off by the control unit of the cargo bike, and performs reverse pedaling. It is possible to measure the charge amount of the battery charged by self-generation.

In addition, according to another embodiment of the present invention, the cargo bike further includes a solar panel, and the detection module considers the SOC value of the replaceable battery as the battery charge amount charged by self-generation by the solar panel. can be measured by By measuring the charging amount of self-generation according to the additional charging means, money or points corresponding to the charging amount may be paid.

Alternatively, according to an embodiment of the present invention, the battery exchange device may exchange the discharged battery of the cargo bike with a fully charged battery when the replaceable battery is a discharged battery. That is, the battery exchange device may exchange a replaceable battery charged by self-generation with a discharged battery, or exchange a fully discharged replaceable battery with a fully charged battery using the power of the cargo bike.

According to an embodiment of the present invention, self-power generation of the motor is possible when reverse pedaling is performed not only during stoppage but also during inertia driving, so that sufficient power can be supplied even with a limited battery capacity, or a battery charged by self-generation can be supplied. By exchanging a discharged battery, a price corresponding to the energy obtained through self-generation can be paid, and a third user can easily receive a battery charged through self-generation, providing a means of livelihood to users in poor environments. Other user supply convenience can be maximized.

1 schematically illustrates the shape of a cargo bike according to an embodiment of the present invention.
2 shows the overall configuration of a cargo bike according to an embodiment of the present invention.
3 is a block diagram showing the overall configuration of a cargo bike according to an embodiment of the present invention.
4 illustrates a process of controlling each component connection according to a first charging mode or a second charging mode during driving or stopping by a controller according to an embodiment of the present invention.
Figure 5 shows a plan view of the cargo bike and battery mounting holder according to an embodiment of the present invention.
6 schematically illustrates the configuration of a replaceable battery for a cargo bike according to an embodiment of the present invention.
7 illustrates a self-power generation control method while driving a cargo bike equipped with a replaceable battery according to an embodiment of the present invention.
8 is a block diagram showing the configuration of a battery exchange device of a battery exchange system according to an embodiment of the present invention.

Hereinafter, embodiments of the present application will be described in detail so that those skilled in the art can easily practice with reference to the accompanying drawings. However, the present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. And in order to clearly describe the present application in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the present specification, when a part is said to be “connected” to another part, it is not only “directly connected”, but also “electrically connected” or “indirectly connected” with another element in between. "Including cases where

Throughout the present specification, when a member is referred to as being “on,” “above,” “on top of,” “below,” “below,” or “below” another member, this means that a member is located in relation to another member. This includes not only the case of contact but also the case of another member between the two members.

Throughout the present specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

1 and 2 schematically illustrate the shape and overall configuration of a cargo bike according to an embodiment of the present invention.

A cargo bike equipped with a replaceable battery according to an embodiment of the present invention includes a bike body frame 303, wheels 301 installed on the frame 303, the wheels 301 and the replaceable battery 100. ) and a gear installed between the wheel 301 and the motor 302, connected to the pedal 304, and receiving power from the motor 302 or the pedal 304 while driving. A body part 300 having a body part 305, a cargo 400 installed on the front part of the body part 300, and a battery disposed in the cargo 400 and configured such that the replaceable battery 100 is detachable. It is connected to the holder 200 and a gear connection controller (not shown) that adjusts the gear connection state, and controls the connection state of the gear 305 to the motor 302 or pedal 304 according to the driving mode to obtain electric power. Connection between the gear 305 and the wheel 301 or the pedal 304 and the gear 305 to perform at least one of the driving mode, the manual driving mode, and the combined driving mode, or to perform the charging mode while driving and stopping. ), and the attached replaceable battery 100 can be connected to the motor 303 through the power line 306 inside the frame 303. there is.

That is, the bike body frame 303 supporting and constituting the bike, the wheel 301 installed under the frame 303, connected to the wheel 301, and supplying power to the replaceable battery 100 for driving the bike. A motor 302 that receives and drives to generate rotational force for rotating the wheel 301, and is installed between the wheel 301 and the motor 302 and is connected to a pedal 304, and the motor ( 302) or a main body portion 300 having a gear 305 receiving power from a pedal 304, a cargo 400 installed on the front portion of the main body portion 300, and a lower portion of one side inside the cargo 400 and a battery mounting holder 200 configured to attach and detach the replaceable battery 100, and a control unit 310 for controlling the operation of the motor 302, wherein the replaceable battery 100 comprises the It is connected to the motor 302 through a power line 306, and can be charged in real time with self-generated energy by driving the motor 302 by manual pedaling performed during driving and stopping of the cargo bike.

At this time, according to an embodiment of the present invention, when the gear 305 detects reverse pedaling performed during driving and stopping of the cargo bike, the control unit 310 determines the distance between the gear 305 and the wheel 301. By releasing the connection, the first charging mode may be performed in which wheel rotation power is cut off and all rotational force due to reverse pedaling is transmitted to the motor 302 .

Alternatively, according to an embodiment of the present invention, a sensor (not shown) for detecting an inclination of the cargo bike is further included to detect downhill driving of the cargo bike, and the inclination detected by the sensor is greater than a reference value or , When the speed of the gear 305 is reduced by the brake, the connection between the pedal 304 and the gear 305 is cut off and all of the rotational force by the wheel 301 passes through the gear 305 to the motor 302 ) It may also perform a second charging mode to be delivered to.

Here, the charging mode in which self-power generation is performed by reverse pedaling according to an embodiment of the present invention may include a first charging mode and a second charging mode, and in particular, the first charging mode is in both a stopped state and a driving state. can be performed

The charging modes can be performed in the driving state, and the driving state does not include power driving by the power of the motor 302, and means an inertia driving state in which the vehicle travels without the motor 302 or forward manual pedaling. That is, self-generation is not possible during power driving, self-generation is possible by reverse pedaling during inertia driving, and self-generation is possible by reverse pedaling even while stopping.

As shown in FIG. 1, the body portion 300 includes a wheel 301, a motor 302, a frame 303 supporting the structure of the cargo bike, a pedal 304 for driving the cargo bike by manual pedaling, It may include a gear 305 with gears coupled to the crank through a chain. In addition, other cargo bike elements such as a handle 311 and a saddle may be further included, which are the same as or similar to known bicycle elements, so details thereof will be omitted.

In addition, as shown in FIG. 1 , the motor 302 may transmit electric energy to the wheel 301 to generate rotational force, or may be driven by receiving the rotational force generated by the wheel 301 to generate the replaceable battery 100. and the motor 302 and the replaceable battery 100 may be connected through the power line 306. Alternatively, as shown in FIG. 2, in addition to the motor 302, a generator for generating electrical energy using the rotational force of the wheel 301 may be further included, and the motor 302 and the generator may be connected through a power line 306. It may also be connected to the replaceable battery 100.

In addition, the motor 302 may be an in-wheel motor installed inside the central axis of the wheel, or may be a separate motor connected to a frame in which the wheel is installed, or may be a driving motor that performs both a generator and an electric motor, or regenerative power generation. It may be an in-wheel motor capable of this.

1 shows a two-wheeled cargo bike with front wheels 301 disposed in front of the cargo 400, and FIG. 2 shows a three-wheeled cargo bike with front wheels 301 disposed on the side of the cargo 400.

That is, the cargo bike according to an embodiment of the present invention may be a two-wheeled or three-wheeled electric cargo bike, preferably a three-wheeled or more electric cargo bike. This is because the load and the weight of the replaceable battery 100 can be supported more stably.

In addition, according to an embodiment of the present invention, the cargo bike has a manual method of rotating the wheel 301 by manual pedaling and an electric drive method of rotating the wheel by a motor receiving energy from the replaceable battery 100. At least one of them can generate thrust.

That is, it may be a hybrid cargo bike having both a manual method of driving the cargo bike by manually turning the pedal 304 and an electric method of driving the cargo bike by driving the motor 302 using electric energy, and the manual method. In addition to driving each of the and electric methods, the cargo bike can be driven by using the manual method and the electric method at the same time.

For example, the motor 302 is driven by self-generating rotational energy generated by manually pedaling the pedal 304 while driving or stopping while driving the motor 302 using electric energy and transferring it to the motor 302 or generator. can be used as a power source for

At this time, power can be transmitted through a power transmission device connected and installed between the motor 302 and the wheel 301, and the power transmission device is implemented by applying various structures of power transmission means used in machinery or automobiles. Where possible, detailed descriptions will be omitted.

The power transmission device may employ various structures such as a gear train, a chain and a sprocket, a belt and a pulley, and a clutch unit, and a gear 305 may be used as a power transmission device according to an embodiment of the present invention.

Also, for example, the motor 302 or the generator and the replaceable battery 100 may transmit power through a power line 306 disposed inside the frame 303 . Specifically, the rotational force of the motor 302 can be directly transmitted to the wheels for driving, and the speed and the like can be controlled by the control unit 310.

In the following description, it is assumed that the motor 302 is a drive motor that includes the function of a generator.

In the case of a three-wheeled or more cargo bike having three or more wheels, the replaceable battery 100 can be charged by performing reverse pedaling without fear of falling even without a wheel support because it has a stable center of gravity without a separate wheel support.

As an embodiment, in a state where the control unit 310 blocks the connection between the wheel 301 and the gear 305 in a stopped state with the brake applied, pedaling in the reverse direction is performed, so that the pedal 304 works even when the wheel 301 touches the ground. Since the rotational force by the is not transmitted to the wheel 301, pedaling can be performed in a fixed state, and the rotational force by the pedal 304 is transmitted to the motor 302 to charge the replaceable battery 100.

That is, the cargo bike according to an embodiment of the present invention has a neutral mode structure in which power is not transmitted to the wheels 301 when pedaling in the opposite direction to the driving power transmission direction, and pedals in the opposite direction to the driving power transmission direction for power generation while stopped. When the pedal 304 is pedaled, power is not transmitted to the wheel 301 and the motor 302 is driven so that the replaceable battery 100 can be charged with electrical energy. Through this, self-power generation can be performed while driving or stopping.

Alternatively, as shown in FIG. 2, according to another embodiment of the present invention, the body portion 300 includes a combination of a wheel support installed under the frame 303 and a gear coupled to the crank through a chain. It further includes a shifting gear 305, and the control unit 310 controls when the gear is set to a neutral mode and manually pedaled in the same forward direction as the driving power transmission direction in a stopped state in which the cargo bike is fixed by the wheel support. The replaceable battery 100 may be charged by driving the motor 302 with the energy generated by the manual pedaling.

That is, in the case of forward pedaling, the rotational force by the pedal 304 is inevitably transmitted to the wheel 301, so the wheel support is rotatably hinged at the lower part of the frame 303, and the frame 303 and Since the length of the wheel support is longer than the vertical length from the connection part of the wheel support to the ground, the wheel 301 can float in the air when the wheel support is rotated in the direction of the ground around the connection part. As a result, rotational force is transmitted to the wheels 301 by forward pedaling, but the vehicle can be maintained in a stopped state without position movement, and rotational force is also transmitted to the motor 302 to charge the replaceable battery 100 .

Specifically, when the gear is set to the neutral mode while the brake is maintained after stopping the cargo bike, power is transmitted to the wheel 301 and the motor 302 through forward pedaling. Accordingly, power may be transmitted to the motor 302 through forward pedaling and stored in the replaceable battery 100 through the power line 306 . According to this embodiment, the replaceable battery 100 cannot be charged through self-power generation while driving, and the replaceable battery 100 can be charged only while the vehicle is stopped.

Preferably, self-energy generation by manual reverse pedaling can be performed by controlling the connection between the gear 305 and the wheel 301 by the control unit 310 without a wheel support in a cargo bike with three or more wheels.

Figure 3 shows the overall configuration of a cargo bike according to an embodiment of the present invention and the transmission of signals and forces accordingly, as shown in Figure 3, the motor 302 is powered from the replaceable battery 100 can be supplied and power can be transmitted to the wheel 301 through the gear 305, which is a power transmission device, or the motor 302 receives rotational force according to manual reverse pedaling of the pedal 304 connected to the gear 305 The replaceable battery 100 may be charged by generating electrical energy.

At this time, the control unit 310 may control driving or speed of the motor 302 by generating and transmitting a control signal to the motor 302, or may determine whether to brake by transmitting a control signal to the braking unit 309. When the braking unit 309 receives a braking signal, it can control the wheel 301 to generate braking force. It may operate in a charging mode such as changing a gear to a neutral mode so that the replaceable battery 100 can be charged.

In addition, the control unit 310 generates a control signal and transmits it to the gear 305 to maintain or release the connection between the gear 305 and the pedal 304 or the connection between the gear 305 and the wheel 301. .

Specifically, as shown in FIG. 4 (a), when the control unit 310 detects that the first charging mode is possible in an inertial driving state, the first charging mode is executed while moving between the wheel 301 and the gear 305. By releasing the connection, the rotational force of reverse pedaling by the pedal 304 is transmitted only to the motor 302, and the self-generated energy of the motor 302 is transmitted to the replaceable battery 100 through the power line 306.

For example, if the user performs reverse pedaling after forward pedaling for a certain period of time, the controller 310 may detect that the first charging mode is in the first charging mode and perform the above-described control process.

Alternatively, as shown in FIG. 4 (b), when regenerative power generation is performed on a downhill road or during deceleration, the controller 310 detects that the second charging mode is possible and executes the second charging mode while pedaling 304 and The connection between the gears 305 is released, and regenerative power generation is performed from the braking force generated from the wheel 301 and transmitted to the motor 302 through the gear 305 . Self-generated energy of the motor 302 may be transferred to the replaceable battery 100 through the power line 306 .

For example, the downhill may be detected through a separate inclination sensor or the control unit 310 may determine that the second charging mode is available through a braking signal of a brake connected to the braking unit 309 . For example, when the control unit 310 detects brake operation of the braking unit 309, the gear 305 connected to the wheel 301 and the pedal 304 is changed so that wheel rotational power is not transmitted to the pedal 304. Thus, the pedal 304 may be fixed at a certain position and perform regenerative power generation.

Alternatively, as shown in FIG. 4(c), the first charging mode and the second charging mode may be simultaneously performed. However, in this case, the force may be dissipated.

Alternatively, as shown in FIG. 4(d), the first charging mode may be performed while the vehicle is stopped. Except that the braking unit 309 fixes the wheel 301, the same control process as in FIG. 4(a) may be performed.

In order for the control unit 310 to cut off the connection between components and transmit power in one direction, according to an embodiment of the present invention, the gear 305 may include a first gear, a second gear, and a third gear, The first gear and the second gear are connected to the rotating shaft of the motor 302, the second gear and the third gear are connected to the wheel 301, and the first gear connects the motor 302 and the wheel 301. The gear, the second gear may be a gear connecting the motor 302 and the pedal 304, and the third gear may be a gear connecting the pedal 304 and the wheel 301.

According to one embodiment of the present invention, the power of the motor 302 or the pedal 304, which is each power source, can be transmitted to the wheels or blocked by changing the position of the gears.

For example, when performing the first charging mode according to inertia driving, the position of the first gear is changed to block transmission of wheel rotation to the motor 302, and the second gear is connected to the pedal 304. Rotational force through reverse pedaling may be transmitted to the motor 302 .

That is, releasing the connection between the wheel 301 and the gear 305 in the first charging mode means that the gear 305 connecting the wheel 301 and the pedal 304 and the wheel 301 and the motor 302 is disconnected. The position of the third gear and the first gear is moved so that the power of the wheel 301 is not transmitted to the motor 302 or the pedal 304.

Alternatively, releasing the connection between the pedal 304 and the gear 305 in the second charging mode means that the gear 305 connecting the wheel 301 and the pedal 304 and the motor 302 and the pedal 304 is disconnected. By moving the position of the third gear and the second gear, reverse pedaling power by the pedal 304 is not transmitted to the motor 302 or the wheel 301.

On the other hand, as shown in FIG. 3, the control unit 310 may generate a control signal determined by receiving the operation direction of the handle 311 of the cargo bike or whether or not the brake is pressed, and information detected by various sensors The determined control signal may be generated by receiving the information of the status display window 312 displaying.

The status display window 312 may display the set driving mode, speed, or rpm of wheels according to the state of the replaceable battery 100, whether the driver is currently driving, or whether driving is on an uphill or off-road driving, and displays corresponding information. An LCD module for display may be provided. In addition, it can detect the external environment or cargo bike status and notify various warnings.

Through this, auxiliary propulsion can be exerted together with the replaceable battery 100, so that even a cargo bike heavier than a general bicycle can secure sufficient propulsion and travel longer distances.

On the other hand, Figure 5 shows a plan view of the cargo and battery mounting holder of the cargo bike according to an embodiment of the present invention,

As shown in FIG. 5 , the battery mounting holder 200 according to an embodiment of the present invention, when the replaceable battery 100 is attached, is connected to the attached replaceable battery 100 and the bi-directional inverter inside. 230, and may be connected to the motor 302 through the bi-directional inverter 230 and the power line 306.

In addition, the battery mounting holder 200 according to an embodiment of the present invention is installed so that the replaceable battery 100 is slidably coupled in the opposite direction to the running direction of the cargo bike, and the center of the battery mounting holder 200 or may include battery mounting holes 210 symmetrically disposed on the left and right sides of the battery mounting holder 200.

That is, the battery mounting hole 210 is installed at the center of the battery mounting holder 200, so that the replaceable battery 100 is mounted separately from the center, or the left and right sides of the battery mounting holder 200 are symmetrical. Thus, the plurality of replaceable batteries 100 can be symmetrically separated and mounted, so that the center of gravity can be maintained.

In addition, the battery mounting holder 200 according to an embodiment of the present invention covers the replaceable battery 100 and places the replaceable battery 100 on top to provide a seating space for the user in a state in which the replaceable battery 100 is mounted. A support member 220 having a flat surface may be included.

As shown in FIG. 5 , the battery mounting holder 200 for mounting the chair and battery may be disposed inside the cargo 400 installed in front of the handle 311, that is, the front portion of the cargo bike. The battery mounting holder 200 may be installed on one side of the inside of the cargo 400, and there is a step difference between the bottom of the cargo 400 and the space in order to secure a space for inserting the replaceable battery 100 and utilize the space as a chair. It can be installed in the form of

In addition, the replaceable battery 100 can be attached by sliding it in the direction A, opposite to the driving direction B of the cargo bike, so that the replaceable battery 100 can be safely fixed after being mounted in the direction A. .

In the battery mounting holder 200, the battery mounting direction of the replaceable battery 100 is in the A direction opposite to the driving direction, so even when the cargo bike accelerates, the replaceable battery 100 is mounted by inertia. It is more strongly coupled with the holder 200 to provide a stable battery installation environment.

In addition, by installing the mounting hole 210 of the replaceable battery 100 in the center of the battery mounting holder 200 in a direction perpendicular to the A direction, the weight of the cargo bike and the cargo 400 by the weight of the battery The center of gravity can be prevented, and the entire center of gravity can be stably maintained by bearing the weight of the replaceable battery 100 together with other loads.

That is, it may be configured as a battery rack having a mounting hole 210 in the center so that the replaceable battery 100 is inserted and mounted in the battery mounting holder 200 .

Alternatively, a pair of battery mounting holes 210 may be provided on both sides so that the pair of replaceable batteries 100 can be pushed in from the side so as to be positioned in the center of the battery mounting holder 200 . In this case, it is installed to be connected to the battery mounting holder 200 on the left and right sides of the outside of the cargo 400, and when a plurality of the replaceable batteries 100 are installed, they can be configured to be individually detachable and mounted. A pair of battery mounting holes 210 are open to the outside so as to face each other, a plurality of battery sockets forming a multi-stage up and down, and facing both sides of the battery mounting holder 200 so that the battery sockets are exposed to the outside and match Exposures may be included.

In addition, FIG. 6 is a perspective view showing an internal structure of the replaceable battery 100 according to an embodiment of the present invention.

As shown in FIG. 6, a plurality of replaceable batteries 100 including a battery cell and a slave BMS 101 connected to the battery cell 102 and controlling the state of the battery cell 100, the battery mounting holder 200 and may include a plug-in connector 140 through which the power line 306 passes at one end so as to be detachable.

Specifically, the replaceable battery 100 according to an embodiment of the present invention may be formed as a rectangular case 110 so as to be easily attached to and detached from the battery holder 200, and the inside of the case 110 may include a battery cell, a slave BMS 101, and the like. At this time, the battery cell and the slave BMS 101 can be easily separated from the inside of the case 110, and the components can be fixed together through the fixing frame 120 arranged to surround the components integrally, and the slave BMS 101 may be used to control the battery state by communicating with a master BMS provided in a battery rack installed in a battery replacement station.

Inside the case 110, a plurality of battery cells 102 are stacked, and a slave BMS 101 for controlling and measuring the battery state is rivet on one side of the battery holder 103 fixing the battery cells 102. can be combined with

In addition, the plug-in connector 140 connected to one end of the replaceable battery 100 can be placed so that the replaceable battery 100 can be connected to the motor 302 of the cargo bike, etc., and the plug-in connector 140 is inside the case. On one side facing the direction, a relay assembly or switch relay 104 may be further disposed so that current flowing to the battery cell 102 is cut off.

Therefore, according to one embodiment of the present invention, the replaceable battery 100 is such that the battery cell 102, the slave BMS 101, the relay assembly or switch relay 104, and the plug-in connector 140 can be fixedly disposed. ) By placing a fixing frame 120 that surrounds the configuration and fixing it through bolts, the fixing frame 120 whole can be put in and out of the case 110. Through this, components can be easily separated from the inside of the case 110 to replace internal parts, and the user moves while carrying the case 110, and the battery holder 200 as well as the battery replacement station with the plug-in connector 140 It is convenient because it can be connected to various objects such as battery racks installed in

In addition, the replaceable battery 100 includes a bumper (not shown) and a plug-in connector 140 coupled to a corner portion or upper and lower surfaces of the replaceable battery 100 in contact with the battery mounting holder 200 in a sliding manner. ) may include a handle 130 installed on the opposite side of the installed side. Through this, the user can easily carry the handle 130 of the replaceable battery 100 and move it, and the battery mount holder 200 is attached to the battery mount holder 200 to connect the replaceable battery 100 by bumpers located at corners or upper and lower surfaces. When retracting, it can be smoothly coupled without damaging the device. That is, the bumper can guide the natural coupling of the replaceable battery 100 by performing a rail role with respect to the battery mount holder 200 while preventing damage when in contact with an external device.

The bumper may use a material such as MC nylon or acetal, which is an exemplary embodiment and the claims are not limited thereto.

In addition, a battery level display window is further disposed outside the case 110 of the replaceable battery 100 so that the top and bottom of the replaceable battery 100 can be intuitively distinguished, and the user can determine the charging level of the replaceable battery. can be easily grasped.

7 illustrates a self-power generation control method 700 while driving a cargo bike equipped with a replaceable battery 100 according to an embodiment of the present invention.

The control method 700 according to an embodiment of the present invention includes a motor 302 connected to a wheel 301, a motor 302 installed and connected between the wheel 301 and the motor 302, or a pedal ( It can be performed in a cargo bike including a gear 305 receiving power from 304 and a cargo 400 configured to attach or detach a replaceable battery 100 that transmits power to the motor 302.

As shown in FIG. 7, the control method 700 controls the connection between the motor 302 and the gear 305 or the pedal 304 and the gear 305 to control the first transmission received from the motor 302. A driving step (S710) of driving the cargo bike by transmitting the power or the second power transmitted from the pedal 304 to the wheel 301 through the gear 305 may be included.

In addition, when the gear 305 detects reverse pedaling performed while the cargo bike is driving, the control unit 310 releases the connection between the gear 305 and the wheel 301 to block wheel rotation power. Performs the first charging mode in which all rotational force due to reverse pedaling is transmitted to the motor 302, or the slope detected by the sensor for detecting the slope of the cargo bike to detect downhill running of the cargo bike When the speed of the gear is greater than the reference value or the speed of the gear is reduced by the brake, the connection between the pedal 304 and the gear 305 is cut off and all of the rotational force of the wheel 301 passes through the gear 305 to the motor 302. ) It may include a power generation step (S720) while driving to perform a second charging mode to be delivered to.

While driving, the control unit 310 controls the connection between the wheel 301, the pedal 304, and the motor 302 to generate power even while driving.

Alternatively, when the cargo bike is stopped, the first charging mode may be performed when the gear 305 detects reverse pedaling while the cargo bike is stopped (S730).

This functionally classifies the steps, and is not limited to the steps proceeding in order according to numbers.

Therefore, according to an embodiment of the present invention, the charge amount of the battery charged by self-generation by the cargo bike equipped with the above-described replaceable battery 100 and reverse pedaling is measured, and the replaceable battery 100 is discharged from another battery. It is possible to provide a battery exchange system for a cargo bike including a battery exchange device 800 that exchanges with.

As shown in FIG. 8 , the battery exchange device 800 includes a detection module 810 for detecting the battery charge amount of the replaceable battery 100 charged by self-generation by reverse pedaling, and the detected battery charge amount. A fee calculation module 820 for calculating a fee corresponding to may be included.

Specifically, the detection module detects the replaceable battery 100 while the connection between the wheel 301 and the gear 305 or the connection between the pedal 304 and the gear 305 is blocked by the control unit 100 of the cargo bike. By measuring the SOC variation value of , the battery charge amount charged by self-generation by reverse pedaling can be measured.

In addition, the battery exchange device 800 exchanges the replaceable battery 100 with a discharged battery or another fully charged or charged battery when payment by the detection module 810 and the charge calculation module 820 is completed. An exchange unit 830 may be further included.

In addition, according to another embodiment of the present invention, in the battery exchange system for a cargo bike, the cargo bike further includes a solar panel, and the detection module measures the amount of battery charge charged by self-generation by the solar panel. It can be measured by considering the SOC value of a type battery.

In addition, when the replaceable battery is a discharged battery, the battery exchange device may exchange the discharged battery of the cargo bike with a fully charged battery.

The battery exchange device according to an embodiment of the present invention may be installed at a battery exchange station for a cargo bike, and in this case, as a charging method for the replaceable battery 100, the replaceable battery 100 is installed in the cargo bike. In a battery exchange station that exchanges the replaceable battery 100 with another battery, the battery condition detection step of measuring and transmitting the battery condition information of the replaceable battery 100 to be replaced to the management server, based on the battery condition information, Based on the life grade calculation step of calculating the life grade of the replaceable battery and storing and managing the calculated life grade in the management server and the battery usage and battery life grade of the recovered replaceable battery and the battery life grade of the battery to be replaced The charge calculation step of differentially calculating the charge charge is performed, and in the battery state detection step, the battery charge amount charged by self-generation by manual pedaling performed during driving and stopping of the cargo bike can be detected.

In the charge calculation step according to an embodiment of the present invention, when the replaceable battery 100 is replaced with another battery that has already been fully charged or is being charged, the SOC difference between the other battery and the replaceable battery 100 is considered and the battery A price corresponding to the amount of charge is paid, or a charging fee excluding the above-mentioned price is calculated, or when the replaceable battery is replaced with a discharged battery in the charge calculation step, the SOC of the replaceable battery charged by self-generation A price corresponding to the SOC value may be paid in consideration of the value.

Specifically, the price may be point payment or cash payback, or may be paid as a discount by the SOC difference value from the charging charge of the battery to be replaced.

As an embodiment, at a battery replacement station, a discharged replaceable battery 100 is replaced with a fully charged battery and a charging fee is paid, or a nearly discharged replaceable battery 100 partially charged by self-generation is replaced with a fully charged battery. , and pay a discounted charging rate by the charged SOC value, or return the fully charged replaceable battery 100 by self-generation to the battery replacement station, receive points or cash, and take the discharged battery.

Through this, users who need a fully charged battery to operate a cargo bike can easily take and use the fully charged battery, and those who want to exercise or receive money can take a discharged battery and charge it with self-generation. User convenience can be implemented.

At this time, the step of calculating the lifespan level according to an embodiment of the present invention is performed by using accumulated data of at least one of charge history, discharge history, current SOC value, voltage, temperature, and internal resistance of the battery for the replaceable battery. A replaceable battery life rating can be calculated.

On the other hand, the cargo bike according to another embodiment of the present invention further includes a solar panel, and in the battery state detection step, the battery charge amount charged by self-generation by the solar panel of the cargo bike is detected, A charging rate may be calculated in consideration of a difference between the battery to be replaced of the battery exchange station and the SOC charged by the solar panel of the replaceable battery.

Specifically, the solar panel can be detachably assembled and installed on the top of the cargo 400 or a part of the cargo bike frame 303, and an angle adjusting unit can be installed to adjust the inclination angle.

The energy charged by the solar panel may be used to drive the motor 302 and store it in the replaceable battery 100 .

Therefore, the battery exchange station for the cargo bike described above collects the battery charged by self-generation according to the above-described battery exchange and billing method of the cargo bike and settles the price, or the discharged battery of the cargo bike is already fully charged. The battery can be exchanged.

By installing the battery exchange station like a bicycle charging station throughout the city, users can easily use and charge the cargo bike.

In addition, it is possible to build a social system that can utilize transportation as a means of livelihood by establishing a system in which electric charging is performed and paid for in remote areas where electric charging is not easy.

The above is only a specific embodiment of the present application, the scope of protection of the present application is not limited thereto, and those skilled in the art can easily think of changes or replacements within the technical scope disclosed by this application. may be made, and such changes or substitutions also fall within the scope of protection of the present application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

100: replaceable battery 101: slave BMS
102: battery cell 103: battery holder
104: switch relay 110: case
120: fixed frame 130: handle
140: plug-in connector 200: battery mounting holder
210: mounting hole 220: support member
230: bidirectional inverter
300: body part 301: wheel
302: motor 303: bike body frame
304: pedal 305: gear
306: power line 309: braking unit
310: control unit 311: handle
312: status display window 400: cargo

Claims (12)

As a cargo bike equipped with a replaceable battery,
A bike body frame, a wheel installed on the frame, a motor connected to the wheel and the replaceable battery, and a gear installed between the wheel and the motor, connected to a pedal, and receiving power from the motor or pedal while driving one body part;
Cargo installed on the front part of the main body;
a battery mounting holder disposed in the cargo and configured to attach or detach the replaceable battery; and
It is connected to a gear connection control unit that adjusts the gear connection state, and controls the gear connection state to the motor or pedal according to the driving mode to perform at least one of the electric power driving mode, manual driving mode, and combined driving mode, or driving and a control unit controlling disconnection of the connection between the gear and the wheel or the connection between the pedal and the gear so as to perform a charging mode while the vehicle is stopped.
The attached replaceable battery is connected to the motor through a power line inside the frame,
Cargo bike with replaceable battery. According to claim 1,
When the gear detects reverse pedaling performed during driving and stopping of the cargo bike, the control unit releases the connection between the gear and the wheel to block wheel rotation power and to transmit rotational force by reverse pedaling to the motor Performing the first charging mode,
Cargo bike with replaceable battery. According to claim 1,
Further comprising a sensor for detecting the tilt of the cargo bike,
When the slope detected by the sensor is greater than the reference value or the speed of the gear is reduced by the brake, the connection between the pedal and the gear is cut off and the rotational force of the wheel is transmitted to the motor through the gear. performing charging mode,
Cargo bike with replaceable battery. According to claim 1,
The battery mounting holder includes a two-way inverter internally connected to the attached replaceable battery when the replaceable battery is attached, and is connected to the motor through the two-way inverter and the power line.
Cargo bike with replaceable battery. According to any one of claims 1 to 4,
The battery mounting holder,
The replaceable battery is installed to be slidably coupled in the opposite direction to the driving direction of the cargo bike,
Including a battery mounting hole disposed in the center of the battery mounting holder or symmetrically disposed on the left and right sides of the battery mounting holder,
Cargo bike with replaceable battery. According to claim 5,
The battery mounting holder,
A support member covering the replaceable battery and disposing a flat surface thereon to provide a seating space for a user in a state in which the replaceable battery is mounted,
Cargo bike with replaceable battery. According to claim 1,
The motor is an in-wheel motor installed inside the central axis of the wheel, or a separate motor connected to a frame in which the wheel is installed.
Cargo bike with replaceable battery. A motor connected to the wheel, a gear installed between the wheel and the motor and receiving power from the connected motor or pedal, and a control unit controlling the connection between at least one of the wheel, motor, and pedal and the gear, and power by the motor In a cargo bike including a cargo configured to be detachable with a replaceable battery that delivers,
A driving step in which the cargo bike travels by controlling the connection between the motor and the gear or the pedal and the gear to transmit the first power received from the motor or the second power received from the pedal to the wheel through the gear; and
When the gear detects reverse pedaling performed during driving of the cargo bike, the control unit releases the connection between the gear and the wheel to block wheel rotation power and to transmit rotational force due to reverse pedaling to the motor. perform charging mode, or
When the slope detected by the sensor for detecting the slope of the cargo bike to detect the downhill driving of the cargo bike is greater than the reference value or the speed of the gear is decelerated by the brake, the connection between the pedal and the gear is blocked and the Including, a power generation step during driving of performing a second charging mode in which the rotational force by the wheel is transmitted to the motor through the gear.
Self-generating control method while driving a cargo bike equipped with a replaceable battery. According to claim 8,
When the cargo bike is stopped, performing a first charging mode when the gear senses reverse pedaling performed while the cargo bike is stopped.
Self-generating control method while driving a cargo bike equipped with a replaceable battery. A cargo bike equipped with the replaceable battery according to any one of claims 1 to 4; and
A detection module for detecting the battery charge amount of the replaceable battery charged by self-generation by reverse pedaling, and a charge calculation module for calculating a charge corresponding to the detected charge amount of the battery; Including; a battery exchange device that exchanges with
The detection module measures the SOC variation value of the replaceable battery while the connection between the wheel and the gear or the connection between the pedal and the gear is blocked by the control unit of the cargo bike to measure the battery charge amount charged by self-generation by reverse pedaling ,
Battery exchange system for cargo bikes. According to claim 10,
The cargo bike further includes a solar panel,
The detection module measures the battery charge amount charged by self-generation by the solar panel in consideration of the SOC value of the replaceable battery.
Battery exchange system for cargo bikes. According to claim 10,
The battery exchange device exchanges the discharged battery of the cargo bike with an already fully charged battery when the replaceable battery is a discharged battery.
Battery exchange system for cargo bikes.

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