Summarize

GTBMS005A-MC17, a battery management system consists of a GTBMS005A-MB host master, several GTBMS005A-VT/CR voltage sampling modules and a GTBMS005A-CH current/temperature sampling module, detecting all cells' voltage in the battery pack , total current of the pack and the surrounding temperature . Detailed performances as follow :
A.
The host master consists of a LCD screen and managing calculator , the screen displays total voltage and current of the pack 、storage electrical quantity （SOC — which rises when it being charged and falls when it being discharged and memorize when the power is shutted off）、the highest cell’s voltage and its number 、the lowest cell’s voltage and its number; the next page displays watte-hour consumption、the highest and the lowest temperature among all the monitoring points; press the key to display the voltage of each cell.
B.
System voltage and the temperature collect board adopt modularization structure , every module manages 10 battery and 1 road temperature. The battery collecting board but adapting to an electric motor car distributes broader characteristic , follow the battery box to disperse installation, between require mains lead and a little data communication to link up only.
C.
The amount of voltage and temperature sampling boards management battery can be set from 1~ N (N ≤ 10) flexible, connecting method adopts N +1; Temperature can be set to have or have no depends on need.
D.
Current sampling board provides a loop current sampling data, Hall sensor is used as current sensor.
E.
The host provides USB interface and CAN Bus which is compatible with ISO 11898 standard completely.
F.
The host provides USB interface that can be connected with computer , and provides data saving function , the saving time is 30s , it can save all data within 7 days and receive all data through the BMS application software .
G.
The host provides alarm interface: voltage upper/lower limit alarm、voltage cut upper/lower limit、temperature upper limit alarm、over current alarm, etc.
H.
The system provides 3 keys – “Fist page”、 “last page”、 “next page”. Choose “fist page”, you can inquire all information except that on “first page” through pressing “last page” and “next page”, last pressing “last page” for 8s under “first page ” state to have data (that is saved by system) set, including reserve electric quantity and watte-hour consumption; when system gets in alarm station,
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press “last page ”and “next page ” at the same time, which can clear all alarm station except voltage cut lower limit、nod invalid and voltage cut upper limit, all signal except cut alarm will be negated within 2 minutes and return to normal state after 2 minutes. Keep pressing “next page” for 8s you can see “system parameter set ” interface, system parameter including : the number of batteries that ara managed by each voltage/temperature sampling board , temperatrue measuring valid , choose the invalid , voltage upper/lower limit alarm and cut set, temperature upper limit alarm set , current upper limit alarm set, rated capacity, capacity calibration, system time, etc.
Major technical target :
Power supply…………………………………………………user provides DC12V
Range of voltage measuring ………………………………………..…...... ..0~+5 V
Voltage measuring accuracy ……………………….......……±(0.3% FS + 0.2% RD)
Voltage display resolution ………………………………………………....... 1mV
Hall sensor
Current measuring range ……………………………………………………….. 0~300 A Current measuring accuracy ……………………………………………………… ± 0.5% Current display differentiate rate ……………………………………………………0.1A
Temperature measuring range …………………………...................….-10℃～85℃
Temperature measuring accuracy …………………………………….. ± 1 ℃
Minimum sampling period (voltage) …………………………….............0.5 s
Ampere-hour accumulative total minimum period …………………….… 0.1s
Ampere-hour display accuracy……………………………………………0.1Ah
Ampere-hour measuring upper limit: ……………………………… > 1000 Ah
Alarm contact parameter
The largest on-off voltage ……………………………………………………..30Vdc

the largest on-off current …………………………………………………………… 1A