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Last modified by Admin on 2025/05/12 10:19
From version 1.2
edited by Admin
on 2024/11/20 15:43
Change comment: There is no comment for this version
To version 1.5
edited by Admin
on 2024/11/20 15:47
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
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1 -Overview
1 +1. Overview
Content
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1 += 1.1 Basic functions =
2 +
1 1  [[Figure 1. BMS Main 3.0>>image:1732117351688-532.png||data-xwiki-image-style-alignment="center" height="202" width="474"]]
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3 3  The BMS Main 3.0 device is a modular battery management system (BMS) controller and performs the following functions:
4 4  
5 5  * collection of information about the voltage and temperature of battery cells from BMS Logic devices;
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12 12  
13 13  The BMS Main 3.0 device is flexibly configured and can work with various types of lithium-ion batteries: LFP (LiFePO4 and LiFeYPO4), LCO (LiCoO2), LMO (LiMn2O4), NMC (LiNiMnCoO2), NCA (LiNiCoAlO2), LTO (Li4Ti5O12), etc.
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15 -1.
16 -11. Specifications
18 += 1.2 Specifications =
17 17  
18 18  |**Parameter**|**Value**
19 19  |(% colspan="2" %)**Power supply**
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81 81  |(% colspan="2" %)**Operating conditions**
82 82  |Operating temperature range, °С|-40 to +85
83 83  
86 += 1.3 Description of features =
84 84  
85 -1.
86 -11. Description of features
87 -
88 88  The BMS Main 3.0 device is powered from an external source having an output voltage in the range from 9 to 32V (connector X1). The device is turned on when there is power and the KEYRUN or CHARGE_ON signal is supplied with a level of at least 8.5V.
89 89  
90 -
91 91  Up to 40 measuring devices BMS Logic 12, BMS Logic 18, BMS Logic RET (X9 connector) can be connected to BMS Main 3.0, while the maximum battery voltage can reach 3000V (assuming that 720 cells are connected with a maximum voltage of 4.2V).
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93 -
94 94  The BMS Main 3.0 device can control 6 contactors (connector X2). For control, intelligent keys are used that monitor the switching current and their own temperature, generating a high-level voltage to power the contactor windings.
95 95  
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97 97  To control battery operating modes, BMS Main 3.0 provides 8 discrete inputs (connector X3), two of which detect voltage in the range from 9 to 32V, the other six are connected to outputs of the “dry contact”, “open collector” or “open drain” type and detecting a short circuit of the signal input to the virtual ground of the device.
98 98  
99 -
100 100  The BMS Main 3.0 device has additional 4 open-drain discrete outputs (connector X3) for issuing control commands to an external circuit.
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103 103  Up to 3 current sensors with unipolar +5V power supply and two signal lines (connector X5) can be connected to BMS Main 3.0. The device is compatible with LEM sensors of the HASS, HTFS, DHAB series or similar from other manufacturers. Using two or three current sensors, a complex battery system can be implemented (for example, an inverter power system with a midpoint and monitoring the current in each of the two battery segments).
104 104  
105 -
106 106  The device has 2 channels for measuring high (up to 1000V) voltage (connectors X11-X14). Using these channels to measure the voltage on the power bus before the contactors and after the contactors, the device controls the process of precharging the capacitors in the load and determines the welding (sticking) of the contacts of the power contactors.
107 107  
102 +Two external thermistors (connectors X5) can be connected to BMS Main 3.0 to measure the temperature in the battery container and/or the temperature of the power contactor. The device software allows to configure the protective opening of the contactor when it overheats.
108 108  
109 -2 external thermistors (connectors X5) can be connected to BMS Main 3.0 to measure the temperature in the battery container and/or the temperature of the power contactor. The device software allows to configure the protective opening of the contactor when it overheats.
110 -
111 -
112 112  The device continuously monitors its own temperature and humidity of the surrounding air using built-in sensors. The BMS Main 3.0 software allows you to configure the protective opening of all contactors at critically high ambient humidity.
113 113  
114 -
115 115  The device implements a circuit for active monitoring of the integrity of a high-voltage bus (high voltage interlock loop, HVIL). BMS Main 3.0 outputs a modulated signal into the current loop and controls the current value in it (connector X4). If there is a discrepancy between the measured and required current values, the device opens the power contactors.
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