JPH118941A - Battery unit fitted with charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To charge a battery any time as long as there is a required power source, even in the case that the residual quantity of the battery runs short during running by accommodating a charger and a charge system of battery in a dripproof case, and mounting it on a bicycle. SOLUTION: A DC motor 19 is accommodated in a drive unit 20 of an electrically assisted bicycle 16, and the control of auxiliary torque outputted by this motor 19 is performed by a controller 21 for controlling the current of a charge system of a battery 26, according to the stepping torque that a driver inputs by rotating a pedal crank 15. Then, the charge system of battery 26 is accommodated in a dripproof case 28, together with a charger 27, and further a power cable 31 is installed capable of being accommodated in the dripproof case 28. A battery unit 25 fitted with a charger is composed of these charge system of the battery 26, a charger 27, a power cable 31, and dripproof case 28. Accordingly, even if the residual capacity of charge system of battery 26 is completely consumed during traveling, the battery can be charged any time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a rechargeable battery and a charger used for an electric assist bicycle, and more particularly to a battery unit with a charger in which the charger is integrally formed with the rechargeable battery. .

[0002]

2. Description of the Related Art Conventionally, there has been known an electric assist bicycle in which an electric motor generates an auxiliary torque corresponding to a driver's pedal depression torque to assist the driver in depressing a pedal. As a power source, a rechargeable battery that can be charged by an attached charger is generally used. At the time of charging, charging is performed using the charger.

An example of such a conventional charger and rechargeable battery is disclosed in Japanese Patent Application Laid-Open No. 8-182210, and FIG. 4 is a block diagram showing the configuration of the conventional charger and rechargeable battery. It is. As shown in FIG. 4, the rechargeable battery 11 is configured by connecting a plurality of unit cells 11a to 11f in series. Also, the charger 100
Is a remaining capacity detecting function 101 for detecting a remaining capacity of each battery block including one or a plurality of single cells, a charging function 102 for charging a single battery for each battery block, and a charging function 1
The charging order control function 103 controls the charging order according to the order of the remaining capacity in the order of the lowest remaining capacity, and the time control function 104 controls the charging time by the charging function 102 to a predetermined time.

At the time of charging, the external connection terminals 12a and 12b of the rechargeable battery 11 and all the intermediate terminals 12c are connected to the charger 1
Connect to 00. In the charger 100, the remaining amount detection function 10
Based on the detection result of 1, the charging function 102 controlled by the charging order control function 103 and the time control function 104 charges each battery block for a predetermined time in ascending order of remaining capacity. For this reason, even when the remaining capacities of the battery blocks vary, the variation of the capacities is reduced by charging, the batteries can be charged substantially uniformly, and the concentration of deterioration in a specific battery block can be avoided.

[0005] The charger 100 is a rechargeable battery 1
Since the rechargeable battery 11 is charged separately, the rechargeable battery 11 is carried to a place where the charger 100 is installed and charged. In addition, Japanese Patent Application Laid-Open No. 7-13754
No. 4 also discloses another example of the configuration of the conventional charger and rechargeable battery. In this technology, a stationary charger separate from the bicycle is provided integrally with an outer box for housing the rechargeable battery, and a terminal for connecting the rechargeable battery is provided on the back of the lid of the outer box. Remove the rechargeable battery from the electric assist bicycle, store this rechargeable battery in the outer case of the charger and close the lid of the outer box, the terminal provided on the outer box and the terminal of the charger Is connected automatically. Therefore, the terminal connection between the charger and the rechargeable battery can be easily and reliably performed.

[0006]

However, in the prior art described above, the charger is of a stationary type and therefore lacks portability. Usually, the charger is separated from the rechargeable battery during traveling and is installed or stored in a predetermined place. Will be done. Therefore,
If the remaining capacity of the rechargeable battery becomes low during driving and charging becomes necessary, charging cannot be performed until the battery is once returned to the charger installation location, and the remaining capacity of the rechargeable battery is When running out, there is a problem that the vehicle must travel without assisting the electric motor.

[0007] In addition, in general, at the time of charging, the work of once removing the rechargeable battery from the vehicle body and connecting it to a charger for charging is unavoidable, and there is a problem that the work load is large. Therefore, it is conceivable to carry the charger during traveling, but in this case, since the conventional charger is heavy and bulky, there is a problem that carrying it adversely affects comfortable traveling, and However, since the conventional charger does not have a drip-proof structure, there is also a problem that in a bad weather, a trouble such as covering with a waterproof sheet is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a battery charger is integrally formed with a rechargeable battery so that the battery is always portable. It is another object of the present invention to provide a battery unit with a charger, which can be charged at any time with a required power supply.

[0009]

According to a first aspect of the present invention, there is provided a battery unit with a charger according to the first aspect of the present invention, which is provided in an electrically assisted bicycle capable of running assisted by an auxiliary power of an electric motor. A case, a rechargeable battery housed in the drip-proof case and serving as a power source for the electric motor, and a charge housed in the drip-proof case and capable of charging the rechargeable battery using a household AC power supply as a power supply Vessels,
And a cable for connecting the charger to the household AC power supply during charging.

According to a second aspect of the present invention, there is provided a battery unit with a charger according to the first aspect, wherein a temperature sensor for detecting a surface temperature of the rechargeable battery in the drip-proof case; A rechargeable battery includes a current detection resistor for detecting a voltage on an output terminal side, a temperature fuse for protecting the rechargeable battery from overcurrent, a charge indicator light for indicating a charged state, and an abnormality indicator light for indicating an abnormal state. In addition, the rechargeable battery is configured as an assembled battery in which electrodes of a plurality of cells are connected by a circuit connecting plate, and the charger has a DC conversion circuit that converts home AC power into DC power. A battery temperature detection circuit for monitoring a temperature state of the rechargeable battery based on a temperature signal detected by the temperature sensor; and a connection of a load to the rechargeable battery based on a voltage signal detected by the current detection resistor. Monitor A load current detection circuit, and a display lamp lighting circuit for performing lighting control of the charging display lamp and abnormal display lamp,
The rechargeable battery is charged by controlling the DC power source converted by the DC conversion circuit, charging is stopped by a charge stop signal from the battery temperature detection circuit or the load current detection circuit, and the indicator light lighting circuit is stopped. And a charge control circuit for turning on the charge indicating lamp or the abnormality indicating lamp via the control signal.

According to a third aspect of the present invention, there is provided a battery unit with a charger according to the first or second aspect, wherein a connection socket is interposed between the rechargeable battery and the charger. It is characterized by being.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a battery unit with a charger according to one embodiment of the present invention. FIG. 1 is a layout diagram in a case showing the configuration, FIG. 2 is a diagram of a current and signal wiring system, and FIG. It is a schematic side view of the electric assist bicycle in which the battery unit with the present charger is mounted.

First, the configuration of the electric assist bicycle equipped with the battery unit with a charger according to the present embodiment will be described. As shown in FIG.
A drive unit 20 is attached to the frame 18 at the position of the crank hub, and a DC motor (electric motor) 19 is housed inside the drive unit 20. The control of the auxiliary torque output by the DC motor 19 is performed by the controller 21 controlling the current of the rechargeable battery 26 in accordance with the stepping torque input by the driver rotating the pedal crank 15. ing. As a result, the stepping torque input by the driver is
The auxiliary torque input from the drive chain 9 is applied, and these torques are transmitted from the drive chain sprocket 4 to the driven chain sprocket 2 via the chain 5 to drive the rear wheel 17.

The rechargeable battery 26 is housed in a drip-proof case 28 together with a charger 27, and a power cable 31 is provided so as to be housed in the drip-proof case 28. The rechargeable battery 26, the charger 27, the power cable 31, and the drip-proof case 28 constitute a battery unit 25 with a charger. The battery unit 25 with a charger is provided with a charge indicator light 36 or an abnormality indicator light 37.

The structure of the battery unit with a charger 25 of this embodiment will be described in detail. As shown in FIG. 1, the battery unit with a charger 25 includes a rechargeable battery 26 and a charger inside a drip-proof case 28. 27 are housed together with the power cable 31. In the rechargeable battery 26, a plurality of cells 26a are arranged in parallel with the + pole and the-pole alternately arranged in parallel.
By connecting the adjacent electrodes alternately with the circuit connecting plate 26b, the unit cell 26a is configured as a battery pack connected in series.

On the other hand, as shown in FIG.
It comprises a DC conversion circuit 41, a battery temperature detection circuit 43, a load current detection circuit 44, an indicator lighting circuit 45, and a charge control circuit 42. The drip-proof case 28 is provided with a temperature sensor 32 such as a thermistor and a current detection resistor 33 that can output a required detection signal to a circuit on the charger 27 side. The temperature sensor 32 is attached to one outer surface of a unit cell 26a which is a component of the rechargeable battery 26,
The outer surface temperature of the cell 26a is detected and input to the battery temperature detection circuit 43. The current detection resistor 33 is provided between the charger 27 and the − output terminal 46, and detects a voltage difference between both ends to detect a load current detection circuit 4.
4 is input.

The DC conversion circuit 41 converts the current supplied from the household AC power supply to the charger 27 via the power cable 31 into a DC power supply. The battery temperature detection circuit 43
Monitors the temperature state of the rechargeable battery 26 based on the temperature signal detected by the temperature sensor 32,
Monitors the connection of the load to the rechargeable battery 26 based on the voltage signal detected by the current detection resistor 33. Then, the charge control circuit 42 controls the DC power source converted by the DC conversion circuit 41 to charge the rechargeable battery 26, and receives a charge stop signal from the battery temperature detection circuit 43 or the load current detection circuit 44. And the charging is stopped, and further the charging indicator light 36 or the abnormality indicator light 37 via the indicator light lighting circuit 45.
Lights up.

The rechargeable battery 26 and the charger 27 configured as described above are connected via a connection socket 35. The connection socket 35 is connected to the positive electrode 2 of the rechargeable battery 26.
6A is connected to a branch point 48a on the − output terminal 46 side of the output cable 48, and the − pole 26B of the rechargeable battery 26 is connected to a branch point 48a on the + output terminal 47 side of the output cable 48. Is provided. Further, a temperature fuse 34 is provided between the connection socket 35 and the negative electrode 26B of the rechargeable battery 26. When an overcurrent flows, the temperature fuse 34 is blown to supply the charging current to the rechargeable battery 26. By stopping, the rechargeable battery 26 is protected.

The drip-proof case 28 in which the rechargeable battery 26 and the charger 27 are housed has a concave portion 28A on the outer wall, and a lid 29 is attached to the concave portion 28A.
When not in use, the power cable 31
A is folded and stored in A, and is covered by a lid 29. 29A is an opening / closing knob provided on the lid 29.

A hole through which the power cable 31 penetrates is formed in the recess 28A of the drip-proof case 28, and a packing 49B is mounted in this hole, so that the drip-proof case 28
Rainwater etc. do not enter inside. Similarly, a packing 49C is also attached to a hole of the drip-proof case 28 through which the output cable 48 penetrates, to ensure waterproofness. Further, the rechargeable battery 26 can be separated from the charger 27 by disconnecting the socket 35. However, since the rechargeable battery 26 is separated and taken out of the drip-proof case 28,
The drip-proof case 28 has an opening 28B. A packing 49A is provided at an edge of the opening 28B, and a lid 5A is provided.
By closing 0, rainwater or the like does not enter from the outside.

Since the battery unit with a charger as one embodiment of the present invention is configured as described above, when the remaining capacity of the rechargeable battery 26 decreases and charging becomes necessary, a battery unit with a charger is required. 25 for electric assist bicycle 16
While being mounted on (see FIG. 3), or detached from the electric assist bicycle 16 (see FIG. 3) as necessary, a switch (not shown) for assist control setting of the controller 21 (see FIG. 3) is turned off. By opening and taking out the power cable 31 from the inside of the battery unit 25 with a charger and connecting it to a household AC power supply, a household AC power supply is supplied to the charger 27, and the charger 27 converts the household AC power supply into a DC power supply. After the conversion, the rechargeable battery 26 is charged.

At this time, the charger 27 is connected to the power cable 3
1 is connected to the household AC power supply,
The battery is converted into a DC power supply by the DC conversion circuit 41 and charging is started. When the temperature of the cell 26a detected by the temperature sensor 32 is lower than 0 ° C. or exceeds 40 ° C., the performance of the rechargeable battery 26 is reduced. To prevent the drop, the battery temperature detection circuit 43 outputs a charge stop signal to the charge control circuit 42 to stop charging.

When a load is connected to the rechargeable battery 26 [for example, charging is performed in a state where the battery unit 25 with a charger is mounted on the electric assist bicycle 16 (see FIG. 3), and the controller 21 (See FIG. 3) when an assist control setting switch (not shown) is turned on (assisting traveling state), when the output terminals 46 and 47 are erroneously short-circuited, etc.), the output terminals 46 and 47 , A voltage is generated in the current detection resistor 33. The load current detection circuit 44 determines whether or not a load is connected to the rechargeable battery 26 based on the voltage value. If the load current detection circuit 44 determines that the load is connected, the circuits 41, 42,
Since an overcurrent may flow through 43, 44, and 45, a charge stop signal is output to the charge control circuit 42 for safety to stop charging.

When the electric temperature detection circuit 43 or the load current detection circuit 44 outputs a charge stop signal, the charge control circuit 42 stops charging and simultaneously activates the abnormality indicator light 37 through the indicator light lighting circuit 45. Turn on. On the other hand, when the temperature detected by the temperature sensor 32 is in the range of 0 ° C. to 40 ° C., and when the load current circuit 44 determines that the load is not connected to the rechargeable battery 27, the charge control circuit 42
Starts charging, blinks the charge indicator light 36 via the indicator light lighting circuit 45, and constantly turns on when charging is completed.

When the charging indicator light 36 is constantly lit to indicate that charging is completed, the power cable 31 is disconnected from the household AC power supply and stored in the storage portion 28A of the drip-proof case 28, and the battery unit with a charger is provided. When 25 is detached from the electric assist bicycle 16 (see FIG. 3), it is mounted on the electric assist bicycle 16 again and
By turning on an assist control setting switch (not shown) (see FIG. 3), assist traveling can be performed again.

When replacing the rechargeable battery 26,
The lid 50 of the drip-proof case 28 is opened, the temperature sensor 32 attached to the outer surface of the rechargeable battery 26 is removed, and the connection socket 35 for connecting the rechargeable battery 26 and the charger 27 is connected.
Is disconnected, the rechargeable battery 26 is taken out of the battery unit 25 with a charger, a new rechargeable battery 26 is installed in the battery unit 25 with a charger, the connection socket 35 and the temperature sensor 32 are set, The lid 50 is attached.

As described above, in the present battery unit with a charger, the charger 27 is housed in the battery unit with the charger 25 integrally with the rechargeable battery 26. You can run while always carrying. Therefore, the rechargeable battery 2
When the remaining capacity of the battery 6 decreases, the power supply cable 31 housed in the battery unit 25 with a charger is taken out and connected to the household AC power supply at any time if there is a household AC power supply. Can be.

The battery unit 25 with the charger
Since it is lightweight and is configured integrally with the electric assist bicycle 16, it does not have the trouble of carrying a stationary charger and has little adverse effect on driving. In addition, since the battery unit 25 with the charger is compactly assembled, the design of the electric assist bicycle 16 is not adversely affected. In addition, there is an advantage that the charger is not left behind.

Further, since the battery unit 25 with a charger houses the charger 27 and the rechargeable battery 26 integrally, external wiring can be eliminated, and the reliability and safety are high. Further, since the charger 27 and the rechargeable battery 26 are protected by the drip-proof case 28, there is no fear that a problem occurs due to infiltration of rainwater or the like, and running in bad weather can be performed without any trouble.

On the other hand, the charger 27 includes the electric temperature detecting circuit 4
3 or when the load current detection circuit 44 outputs a charge stop signal, the charge is stopped by the charge control circuit 42.
Degradation of the performance of the rechargeable battery 26 due to charging outside the proper temperature range can be prevented, and even if a load is connected to the rechargeable battery 26 at the time of charging, such as charging in an assist state, the flow of overcurrent is avoided. , 42, 43, 44, 45 can be prevented from being damaged. Further, the abnormality indicator light 37 is turned on via the indicator light lighting circuit 45 at the same time as the charging is stopped, so that it is possible to grasp at a glance that an abnormality has occurred. Further, the provision of the thermal fuse 34 can prevent the rechargeable battery 27 from being damaged by overcurrent.

When the temperature detected by the temperature sensor 32 is within an appropriate range, and when the load current circuit 44
When it is determined that the load is not connected to the charging circuit 7, the charging control circuit 42 starts charging, blinks the charging indicator 36 via the indicator lighting circuit 45, and turns on constantly when the charging is completed. The inside and the charge completion can be easily checked.

Further, as the number of times of charging increases, the power storage capacity of the rechargeable battery 26 generally decreases. In this case, the lid 50 of the drip-proof case 28 is opened and the outer surface of the rechargeable battery 28 By removing the attached temperature sensor 32 and disconnecting the connection socket 35 for connecting the rechargeable battery 28 and the charger 27, the rechargeable battery 26 can be easily taken out from the battery unit 25 with the charger. ,
It can be easily replaced with a new rechargeable battery 26. It is also possible to carry a spare rechargeable battery, and replace it with a spare rechargeable battery instead of charging when the remaining capacity of the rechargeable battery 26 in use decreases.

For example, the opening 28B is provided in the drip-proof case 2
In the case where it is provided in a portion where rainwater can be prevented from entering, such as the lower surface of 8, the mounting of the packing 49A is omitted, and the detailed structure is not limited to the configuration of the present embodiment.

[0034]

As described above in detail, according to the battery unit with the charger according to the first aspect of the present invention, the charger and the rechargeable battery are housed integrally in the drip-proof case and mounted on the bicycle. Therefore, the charger can be carried at all times even during traveling. Therefore, when the remaining capacity of the rechargeable battery decreases during assisted driving, whenever there is a household AC power supply, by taking out the power cable stored in the drip-proof case and connecting it to the household AC power supply There is an effect that can be charged.

Further, since the battery unit with the charger is lightweight and compact, the above-described effects can be obtained without adversely affecting the operation of the electrically assisted bicycle and without adversely affecting the design. be able to. Furthermore, since the charger and the rechargeable battery are housed integrally in the drip-proof case, the external wiring can be eliminated, and the reliability and safety are high. Since the case is protected by the drip-proof case, there is no fear that a problem occurs due to infiltration of rainwater or the like, and traveling in bad weather is possible.

According to the battery unit with a charger according to the present invention, the same effect as in the case of the first aspect can be obtained, and the charger can be provided with an electric temperature detecting circuit or a load current detecting circuit. When the battery outputs a charge stop signal, the charge is stopped by the charge control circuit, so that the performance of the rechargeable battery can be prevented from deteriorating due to charging outside the proper temperature range. The flow of current is avoided, and the circuit in the charger can be prevented from being damaged. In addition, since the abnormality indicator lamp is turned on via the indicator lamp lighting circuit simultaneously with the stop of charging, it is possible to recognize at a glance that an abnormality has occurred.

Further, according to the battery unit with a charger according to the present invention, the same effect as in the case of the first or second aspect can be obtained, and the drip-proof case is opened to connect the rechargeable battery. By disconnecting the connection socket from the charger, the rechargeable battery can be easily taken out of the battery unit with the charger, and the rechargeable battery can be easily replaced.

[Brief description of the drawings]

FIG. 1 is an arrangement diagram in a case showing a configuration of a battery unit with a charger as one embodiment of the present invention.

FIG. 2 is a current and signal wiring diagram of a battery unit with a charger as one embodiment of the present invention.

FIG. 3 is a schematic side view of an electric assist bicycle equipped with a battery unit with a charger as one embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a conventional charger and a rechargeable battery.

[Explanation of symbols]

 Reference Signs List 25 Battery unit with charger 26 Rechargeable battery 26a Single cell 26b Circuit connection plate 27 Charger 28 Drip-proof case 31 Power cable 32 Temperature sensor 33 Current detection resistor 34 Temperature fuse 35 Connection socket 36 Charge indicator light 37 Abnormal indicator light 41 DC Conversion circuit 42 Charge control circuit 43 Battery temperature detection circuit 44 Load current detection circuit 45 Indicator lighting circuit

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[Procedure amendment]

[Submission date] June 30, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

[SUMMARY OF THE INVENTION However, in the conventional technique described above, it lacks cellular ascending order charger is stationary, normally, at the time of running the installation is separated from the rechargeable battery in place or Will be kept. Therefore,
If the remaining capacity of the rechargeable battery becomes low during driving and charging becomes necessary, charging cannot be performed until the battery is once returned to the charger installation location, and the remaining capacity of the rechargeable battery is When running out, there is a problem that the vehicle must travel without assisting the electric motor.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] In addition, in general, at the time of charging, the work of once removing the rechargeable battery from the vehicle body and connecting it to a charger for charging is unavoidable, and there is a problem that the work load is large. Therefore, it is conceivable to mobile line charger even when traveling, in this case, since the bulky conventional chargers heavy, is this to mobile row there is a problem that adversely affect the comfortable driving In addition, since the conventional charger does not have a drip-proof structure, there is also a problem that, in bad weather, time and effort such as covering with a waterproof sheet is required.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] The present invention has been made in view of the above problems, and comprises a charger integrally formed with a rechargeable battery so as to always carry the charger.
Thereby enabling the line, even when there are no more remaining capacity of the rechargeable battery during running, and to be charged at any time if they have the required power, and an object thereof is to provide a battery unit with the charger.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

The rechargeable battery 26 is housed in a drip-proof case 28 together with a charger 27, and a power cable 31 is provided so as to be housed in the drip-proof case 28. The rechargeable battery 26, the charger 27, the power cable 31, and the drip-proof case 28 constitute a battery unit 25 with a charger. The battery unit 25 with a charger is provided with a charge indicator light 36 and an abnormality indicator light 37.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

The DC conversion circuit 41 converts the current supplied from the household AC power supply to the charger 27 via the power cable 31 into a DC power supply. The battery temperature detection circuit 43
Monitors the temperature state of the rechargeable battery 26 based on the temperature signal detected by the temperature sensor 32,
Monitors the connection of the load to the rechargeable battery 26 based on the voltage signal detected by the current detection resistor 33. Then, the charge control circuit 42 controls the DC power source converted by the DC conversion circuit 41 to charge the rechargeable battery 26, and receives a charge stop signal from the battery temperature detection circuit 43 or the load current detection circuit 44. and it stops charging, further turns on the charging display lamp 3 6 via a display lamp lighting circuit 45.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

The rechargeable battery 26 and the charger 27 configured as described above are connected via a connection socket 35. The connection socket 35 is connected to the positive electrode 2 of the rechargeable battery 26.
And 6A, the output cable 48 - to connect the branch points 48 b of the output terminal 46 side, the rechargeable battery 26 - so as to connect the electrode 26B, the output cable 48 + a branch point 48a of the output terminal 47 side It is provided in. Further, a temperature fuse 34 is provided between the connection socket 35 and the negative electrode 26B of the rechargeable battery 26. When an overcurrent flows, the temperature fuse 34 is blown to supply the charging current to the rechargeable battery 26. By stopping, the rechargeable battery 26 is protected.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

The drip-proof case 28 in which the rechargeable battery 26 and the charger 27 are housed has a concave portion 28A on the outer wall, and a lid 29 is attached to the concave portion 28A.
When not in use, the power cable 31
A is folded and stored in A, and is covered by a lid 29. 29A is an opening / closing handle provided on the lid 29.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[0024] Incidentally, when the batteries temperature detection circuit 43 or the load current detection circuit 44 outputs a charge stop signal, at the same time when the charging control circuit 42 stops charging, the fault indicator lamp 37 via a display lamp lighting circuit 45 Turn on. On the other hand, when the temperature detected by the temperature sensor 32 is in the range of 0 ° C. to 40 ° C., and when the load current circuit 44 determines that the load is not connected to the rechargeable battery 27, the charge control circuit 42
Starts charging, blinks the charge indicator light 36 via the indicator light lighting circuit 45, and constantly turns on when charging is completed.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

When replacing the rechargeable battery 26,
The lid 50 of the drip-proof case 28 is opened, the temperature sensor 32 attached to the outer surface of the rechargeable battery 26 is removed, and the connection socket 35 for connecting the rechargeable battery 26 and the charger 27 is connected.
Is disconnected, the rechargeable battery 26 is taken out of the battery unit 25 with a charger, a new rechargeable battery 26 is installed in the battery unit 25 with a charger, the connection socket 35 and the temperature sensor 32 are set, Close the lid 50.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

As described above, in the present battery unit with a charger, the charger 27 is housed in the battery unit with the charger 25 integrally with the rechargeable battery 26. You can run while always carrying . Therefore, during assist driving, the rechargeable battery 26
When the remaining capacity of the battery is low, charging can be performed by taking out the power cable 31 housed in the battery unit 25 with a charger and connecting it to the household AC power supply wherever there is a household AC power supply. it can.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

On the other hand, the charger 27 includes a battery temperature detection circuit 4
3 or when the load current detection circuit 44 outputs a charge stop signal, the charge is stopped by the charge control circuit 42.
Degradation of the performance of the rechargeable battery 26 due to charging outside the proper temperature range can be prevented, and even if a load is connected to the rechargeable battery 26 at the time of charging, such as charging in an assist state, the flow of overcurrent is avoided. , 42, 43, 44, 45 can be prevented from being damaged. Further, the abnormality indicator light 37 is turned on via the indicator light lighting circuit 45 at the same time as the charging is stopped, so that it is possible to grasp at a glance that an abnormality has occurred. Further, the provision of the thermal fuse 34 can prevent the rechargeable battery 27 from being damaged by overcurrent.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

Further, as the number of times of charging increases, the power storage capacity of the rechargeable battery 26 generally decreases. In this case, the lid 50 of the drip-proof case 28 is opened and the outer surface of the rechargeable battery 28 By removing the attached temperature sensor 32 and disconnecting the connection socket 35 for connecting the rechargeable battery 28 and the charger 27, the rechargeable battery 26 can be easily taken out from the battery unit 25 with the charger. ,
It can be easily replaced with a new rechargeable battery 26. Further, the rechargeable battery spare leave cellular line, when the remaining capacity of the rechargeable battery 26 in use is lowered, it is also possible to replace the rechargeable battery in place pre-charging.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

[0034]

As described above in detail, according to the battery unit with the charger according to the first aspect of the present invention, the charger and the rechargeable battery are housed integrally in the drip-proof case and mounted on the bicycle. to be, it is possible to constantly mobile line charger even while traveling. Therefore, when the remaining capacity of the rechargeable battery during the assist running is lowered, where <br/> but if they have a household AC power source, remove the power cable is housed in a drip-proof case to a household AC power source There is an effect that charging can be performed by connecting.

[Procedure amendment 14]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02J 7/00 301 H02J 7/00 301A

Claims (3)

[Claims] 1. A drip-proof case provided for an electrically-assisted bicycle capable of running assisted by an electric motor, a rechargeable battery housed in the drip-proof case and serving as a power source for the electric motor, And a charger capable of charging the rechargeable battery by using the household AC power supply as a power supply, and being connected to the household AC power supply during charging so as to be housed in the drip-proof case. And a cable for charging the battery unit. 2. A temperature sensor for detecting a surface temperature of the rechargeable battery in the drip-proof case, a current detection resistor for detecting a voltage on an output terminal side of the rechargeable battery, and the rechargeable battery from overcurrent. And a charge indicator light for indicating a charge state and an abnormality indicator light for indicating an abnormal state.The rechargeable battery has a plurality of unit cells connected between electrodes by a circuit connecting plate. The battery charger is configured as an assembled battery, the charger includes: a DC conversion circuit that converts a household AC power supply into a DC power supply; and a battery temperature detection that monitors a temperature state of the rechargeable battery based on a temperature signal detected by the temperature sensor. A circuit, a load current detection circuit that monitors connection of a load to the rechargeable battery based on a voltage signal detected by the current detection resistor, and an indicator light that controls lighting of the charge indicator light and the abnormality indicator light. Circuit and The rechargeable battery is charged by controlling the DC power source converted by the DC conversion circuit, charging is stopped by a charge stop signal from the battery temperature detection circuit or the load current detection circuit, and the indicator lamp lighting circuit is turned on. The battery unit with a charger according to claim 1, further comprising: a charge control circuit that lights the charge indicator lamp or the abnormality indicator lamp via the battery. 3. A connection socket is interposed between the rechargeable battery and the charger.
Or the battery unit with a charger according to 2.