✎ robotina_bms []

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====== Robotina Battery Management System ======

===== General description =====

This system comprehensively measures the battery performance, and displays the real-time parameters and real-time alarm for the 
failed battery to realize the automation of battery detection and failure expected detection. 
Through real-time monitoring of the battery power parameters and operating status obtained by the Controller, 
the actual operating status and health status of the battery pack can be accurately grasped, and problems existing in the use of the battery pack can be found in time.
The HMI touch display  displays the power data, health status and alarm reminder of each battery in real time. 
The cell sensors detects the condition of each battery in real time, and gives a timely alarm to the bad battery, 
so as to accurately grasp the actual running state and health of the battery pack in real time, and to timely find problems in the use of the battery pack. 
This not only effectively extends the backup time and operating life of the battery pack, 
but also greatly reduces the maintenance costs such as manpower and material resources. 
It also improves the safety of battery use, reduces the accident rate and effectively saves energy and reduces emissions, 
creating for the user and create good economic and social benefits for the users.

===== System diagram =====

{{hiq_hardware:btms_system_diagram.png}}
===== Dictionary of terms and abbreviations =====

===== Wiring diagram =====

{{:hiq_hardware:btms_wiring_diagram_wiki.png }}
===== System components =====

====BM-CS  Cell sensor====

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**Highlights & Features**

* Real-time cell voltage measurement
  * Internal resistance measurement on line
  * Negative pole temperature measurement
  * Balancing function

**Technical specification**

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^ Power supply             | BM-SS-02                      | 2 VDC (1.6 .. 2.6 VDC)    |
| :::                      | BM-SS-12                      | 12 VDC (7.5 .. 15.6 VDC)  |
^ Power loss               | BM-SS-02                      | 110 mW                    |
| :::                      | BM-SS-12                      | 90 mW                     |
^ Operating temperature    | standard                      | 0 .. 45 °C                |
| :::                      | max                           | -10 .. 55 °C              |
^ Storage temperature      | -40 .. 70°C                                              ||
^ Operating humidity       | 5 .. 95 % RH, Non condensing                             ||
^ Dimensions:              | width                         | 60 mm                     |
| :::                      | height                        | 80 mm                     |
| :::                      | height max                    | 95 mm                     |
| :::                      | depth                         | 25 mm                     |
^ Voltage measurements     | BM-SS-02                      | 1.6 .. 2.6 VDC            |
| :::                      | BM-SS-12                      | 7.5 .. 15.6 VDC           |
| :::                      | accuracy                      | ±0.2 %                    |
| :::                      | resolution                    | 0.001 V                   |
^ Resistance measurements  | range                         | 0.1 .. 50 mΩ              |
| :::                      | consistency                   | ±(1.5 % + 25 μΩ)          |
| :::                      | repeatability                 | ±(1.0 % + 25 μΩ)          |
| :::                      | resolution                    | 0.001 mΩ                  |
^ Balancing                | Current                       | 0.2 A                     |
^ :::                      | Time                          | 1 min                     |

**LED indicator**

**Battery SOC is calculated using the default battery characteristic parameters:**

|<600px 200px 200px>|
^ Battery voltage level  ^  2 V                   ^  12 V     ^
| Float range            |  -0.02 C* .. +0.02 C*             ||
| Float voltage          |  2.23 V                |  13.38 V  |
| Cut-off voltage        |  1.75 V                |  10.8 V   |
| Recovery voltage       |  2.12 V                |  12.68 V  |

* C is the battery capacity

**Wiring & Mounting**

==== BM-SS-A1  String master====

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| Order code:  ^ BM-SS-A1  |

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**Highlights & Features**

* Real-time monitoring of string voltage, charge-discharge current, charge-discharge state and string SOC.
  * Monitor the voltage, impedance, temperature, SOC and SOH of each battery with BM-CS cell sensors and the specially designed isolated power bus.
  * Advanced one-step auto-sensing for individual address. No more manual intervention and setup needed, reducing workload and setup errors.
  * Advanced measurement algorithm, no need to discharge large current and measurement can be lossless.
  * Balancing function: Keep voltage balanced during the floating charge process of battery pack, keeping the individual battery in the best state, extending backup time and life span of battery pack.
  * Communication is based on power-isolated RS485. Secure and stable.
  * Quickly locate the alarmed or faulty battery pack in machine room.
  * External open Hall Sensor, measuring charge-discharge current in different ranges.
  * Isolated voltage in communication interface: AC 3750V
  * Supports up to 120 batteries (BM-CS)

**Technical specification**

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^ Power supply           | Nominal                      | 24 VDC           |
| :::                    | Range                        | 12 .. 36 VDC     |
^ Power loss             | ≤ 2W                                           ||
^ Operating temperature  | Standard                     | 0 .. 45 °C       |
| :::                    | Limit                        | -10 .. 55 °C     |
^ Storage temperature    | -40 .. 70 °C                                   ||
^ Working humidity       | 5 .. 95 %RH, non-condensing                    ||
^ Dimensions:            | Width                        | 85 mm            |
| :::                    | Height                       | 105 mm           |
| :::                    | Height max                   | 120 mm           |
| :::                    | Depth                        | 39 mm            |
^ Voltage measurements   | Range                        | 20 .. 800 VDC    |
| :::                    | Accuracy                     | ± 0.5 %          |
| :::                    | Resolution                   | 0.01 VDC         |
^ Current measurements   | Range                        | -1000 .. 1000 A  |
| :::                    | Accuracy                     | ± 2 %            |
| :::                    | Resolution                   | 0.01 ADC         |

**LED indicator**

**Wiring**

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====Hall Sensor====

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| Order code:  ^ BM-HS-50   | 50 A   |
| :::          ^ BM-HS-100  | 100 A  |
| :::          ^ BM-HS-200  | 200 A  |
| :::          ^ BM-HS-300  | 300 A  |
| :::          ^ BM-HS-400  | 400 A  |
| :::          ^ BM-HS-500  | 500 A  |

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**Highlights & Features**

* easy installation (split core)

**Technical specification**

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^ Dimensions:           | width                | 95 mm         |
| :::                   | height               | 80 mm         |
| :::                   | depth                | 25 mm         |
| :::                   | core inner diameter  | 40 mm         |
^ Current measurements  | BM-HS-50             | 0 .. 50 ADC   |
| :::                   | BM-HS-100            | 0 .. 100 ADC  |
| :::                   | BM-HS-200            | 0 .. 200 ADC  |
| :::                   | BM-HS-300            | 0 .. 300 ADC  |
| :::                   | BM-HS-400            | 0 .. 400 ADC  |
| :::                   | BM-HS-500            | 0 .. 500 ADC  |
| :::                   | Resolution           | 0.01 ADC      |

**Wiring**

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