decon JWB2 Manual de usuario
X0B-28197-000 BK DIC142p
X0E-28197-P1
Published September 2013
SERVICE MANUAL
This manual has been created as a guideline for maintenance
service to be performed at the dealers before and after the sale.
Please refer to it together with the Owner’s Manual.
For Electric Wheelchair, Electric Power Assist Unit for Wheelchairs
Nickel Metal Hydride Battery JWB2
Lithium Ion Battery ESB1
Nickel Metal Hydride Battery JWB2
Lithium Ion Battery ESB1
Nickel Metal Hydride Battery JWB2
Lithium Ion Battery ESB1
2020-06
Indicates correct methods and key points when operating the product.
Indicates that misuse may lead to fatal or severe injury, or disability.
CAUTION
Indicates that misuse may lead to material damage.
Foreword
This Service Manual describes the procedures for inspecting, adjusting and as well as how
to handle errors of the nickel metal hydride battery, lithium ion battery and battery chargers
for the electric wheelchair and the electric power assist unit for wheelchair manufactured by
Yamaha Motor.
Symbols Used in This Manual
Items concerning proper handling are indicated with the following symbols.
Other Precautions
• For product improvement purposes, the descriptions and specifications in this manual are subject
to change without notice.
• Due to changes in the specifications, some of the photos and descriptions may differ from the
actual product.
• This manual is intended for use by persons possessing the basic technical knowledge and skills.
• Persons who do not possess the general service skills and knowledge should not rely solely on
this service manual to perform inspection, adjustment, disassembly, or reassembly. Failure to
observe this precaution can lead to maintenance problems or mechanical damage.
WARNING
NOTE
CONTENTS
1. Nickel Metal Hydride Battery ..................4
1.1. Names of Parts and Circuits .......................4
1.2. Function of the Battery............................5
2. Lithium Ion Battery .........................10
2.1. Names of Parts and Circuits ......................10
2.2. Function of the Battery...........................11
3. Specications .............................15
3.1. Nickel Metal Hydride Battery Charger (JWC-2) ........15
3.2. Charger for Lithium Ion (ESC1) ....................20
3.3. Charger for Lithium Ion and Nickel Metal Hydride . . . . . . . .
Battery (ESC3).................................26
4. Specications .............................30
4.1. Specications..................................30
4
1
1. Nickel Metal Hydride Battery
1.1. Names of Parts and Circuits
Protective cap
Battery management system
Battery management controller
Thermistor
Temperature
fuse
White
Narrow
Red
Narrow
Blue
Narrow
Black Narrow
Black
Narrow
Black
Black
Sticker
Battery
management
system
Battery unit
TX RX -+
Internal wiring diagram
Indicator switch Capacity indicator lamp
Release button
Battery fuse
(20A blade type)
Screw
Contacts
20A fuse
Backup battery fuse
5
1
1.2. Function of the Battery
The battery management system, which is built-in the battery, provides the following three major
functions: “residual capacity management”, “battery information communication”, and “service”.
(1) Residual Capacity Management
The battery management system uses an “amperage
integration system” to manage the residual capacity,
and a “capacity learning system” to monitor the state
of deterioration of the battery in the form of capacity.
The indicator lamps located on top of the battery
indicate the residual capacity in 6 stages.
Residual Charge Indication
When the indicator switch is pressed, the 5
indicator lamps turn ON for 5 seconds to show the residual capacity of the battery in 6 stages.
(The last segment consists of 2 stages, ON and blinking.)
Battery Deterioration Indication
When the battery deteriorates below 80% of the initial capacity, the topmost segment of the
indicator will no longer turn ON after the battery is charged. As the battery deteriorates further
and its capacity decreases below 60%, the fourth segment will also stop turning ON.
CAUTION
If the capacity gauge shows that the battery has deteriorated prematurely,
perform a simple diagnosis in the service mode, which will be described later.
CAUTION
If 1 segment of the capacity gauge blinks (residual capacity warning), instruct
the user to immediately charge the battery or replace it with a spare battery.
• After the battery deteriorates, the residual capacity gauge might not fully turn
ON even after the battery is charged.
• At times, the battery might recover after the capacity gauge had shown the
battery to be deteriorated. This occurs when the battery becomes more active
due to the ambient temperature or the use mode.
• If the battery deteriorates below 60%, its charge-discharge characteristics
become unstable. Then, the battery capacity indicator will be unable to
accurately indicate the residual capacity. In this case, recommend that the
user replace the battery.
• The residual capacity gauge will be reset to 0 if the fuse is blown or removed.
It will revert to the normal indication after the battery is charged.
NOTE
Capacity
indicator
lamp
Indicator
switch
80–100%
40–60%
0–20%
20–40%
60–80%
(Blinks at 0 to 10%)
Capacity guide
(new state)
6
1(2) Battery Information Communication
The battery management system is equipped with a function to display and communicate various
information about the battery.
Battery Information Communication
The battery management system has a built-in function to establish communication with the
drive unit and the charger. It exchanges various types of information during charging and
discharging processes.
Out of Guaranteed Temperature Range Indication ·
Malfunction Diagnosis Indication
1. If the battery temperature gets below -5°C, the
capacity gauge will be unable to indicate the
precise capacity. Therefore, the capacity gauge
will blink to inform you that the battery tem-
perature is beyond the guaranteed temperature
range.
2. If the temperature sensor that is built into the
battery fails, the fourth LED will blink.
3. If the temperature of the battery becomes
abnormally high, the LEDs 1, 3, and 5 will blink.
CAUTION
If the battery will not be used for a long time, store it in a dry area, at a
temperature between 0 and 30°C. In addition, charge at least once every three
months.
Both the charger and the vehicle will show a communication malfunction if
communication is disabled due to the deformation of the contact points or the
entry of foreign matter.
NOTE
7
1
(3) Simple Diagnosis of the Battery (Service Mode)
On the battery, the battery management system has a service mode. This mode enables you to
perform a simple diagnosis on the battery as follows.
Push and hold the indicator switch for 10 seconds
The capacity indication will turn ON again
Then release the switch
The capacity indication will turn OFF in 5 seconds
Keep on pushing the switch
Service Mode
Shows all LEDs turned ON (LED check)
Any of the 5 LEDs turn ON
3 seconds
later
Shows a combination of LEDs that turn ON and blinking
30 seconds
later
Simple Battery
Diagnosis Table
Deterioration Level
Indication
30 seconds
later
30 seconds
later
Shows a combination of LEDs that turn ON and blinking
Reference Item
Use Frequency
Indication
Service mode ends
Before the capacity indication turns OFF (in almost 8
seconds), press the indicator switch twice.
The indications change after the number of
seconds shown below elapse or when the
indicator switch is pressed.
8
1
Simple Battery
Diagnosis Table
Deterioration Level
Indication
Use Frequency
Indication
This indicates the number of times the battery is used. A single
charging and discharging cycle constitutes 1 time.
Center LED is ON
Bottom LED is ON
Top LED is ON
The battery is normal.
Below
60%
60–
65%
65–
70%
70–
75%
75–
80%
80–
85%
85–
90%
90–
95%
95–
100%
100%
0–
99
100–
149
150–
199
200–
249
250–
299
300–
349
350–
399
Over
400
ON
OFF Blinking
* Indication of the deterioration level may not be correct, in case the refresh charging has not been performed
appropriately.
This indicates the deteriorated state of the battery in terms of
the ratio to the capacity of a new battery.
Refresh charge has not been performed,
or the capacity learn failed.
Advise the customer to be sure to perform
refresh charging the next time a refresh
notification is displayed on the charger.
Tester diagnosis is required.
Perform a complete diagnosis with
a battery tester.
Simple Diagnosis List
9
1
Start diagnosis
Is the battery fuse blown?
Has the battery voltage
dropped below 20V?
Does the switch on the
board operate when it is
pushed directly?
Is there an open circuit,
or a failed or detached
connector?
The battery management system
may have failed. Contact a person in
charge of service.
Eliminate cause of the blown fuse,
then replace the fuse.
Charge the battery.
The indicator switch is broken.
Repair the open circuit of the board
lead wire, or the failed or detached
connector.
Disassemble the battery case
Yes
No
No
Yes
No
Yes
No
Yes
(4) Troubleshooting the Battery Management System
If the battery management system cannot show the capacity or is unable to charge, diagnose the
systembyreferringtotheowchartbelow.
10
2
LED
TX RX
Battery management system
Battery management controller
Connector cover
Connector for charger
Manufactured date
(underside)
Protective cap
Capacity indicator lampIndicator switch
Gripping handle
Contacts
2. Lithium Ion Battery
2.1. Names of Parts and Circuits
Este manual sirve para los siguientes modelos
1
Tabla de contenidos
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