Bsu01 (12S acquisition module) 10V~54V

Product Description

 

                       <

BSU01 (12S acquisition module)

User's Manual 
 

[20178V1.0]

 

 

Catalog 

Catalog 2
1  Product introduction 3
1.1 Introduction of Product Function 3
1.2 Interface definition 4
Ø J1(2*14) Joint Definition Description 4
2  Outline Dimensions and Wiring Diagrams of Products 6
2.1 Product Installation Dimension Diagram 6
2.2Schematic diagram of master-slave communication connection 6
2.3  BSU01 (12S acquisition module) voltage detection wiring diagram 7
Ø Detection of 12 Series Battery Connection Diagram 8
Ø Detection of 11 Series Battery Connection Diagram 8
Ø Detection of 10 Series Battery Connection Diagram 9
Ø Detection of 9 Series Battery Connection Diagram 9
Ø Detection of 8 Series Battery Connection Diagram 10
Ø Detection of 7 Series Battery Connection Diagram 10
Ø Detection of 6 Series Battery Connection Diagram 11





 

1 Product introduction

1. 1. Introduction of Product Function

 BSU01 (12S acquisition module) adopts passive design scheme and is suitable for multi-field battery module acquisition system. Its main functions include high-precision monomer voltage detection, temperature detection, fully isolated differential coding communication, passive equalization and other functions.
 

1. 1. 1. Monomer Voltage Detection

BSU01 (12S acquisition module) single voltage detection circuit can be configured by the host computer of BMS. Each acquisition module can collect up to 12 channels and at least 6 channels. The design principle is based on the latest circuit principle. The acquisition range is 0-5V, and the maximum error of single unit voltage measurement is 2mV. Compared with other products, the single voltage acquisition accuracy of this product is a bright spot.
 

1. 1. 1. Temperature detection

BSU01 (12S acquisition module) has six channels of temperature detection, using NTC temperature sensor with strong anti-interference ability.

 

1. 1. 1. Fully Isolated Differential Coding Communication

The communication between BCU and BSU, BSU and BSU adopts fully isolated differential encoding communication circuit, and the communication distance of twisted pair communication line is up to 50 meters.

 

1. 1. 1. Passive equilibrium

Each BSU01 (12S acquisition module) supports passive equalization of up to four batteries at the same time, and the equalization current is about 100 mA, which supports equalization failure protection.









Introduction of Technical Parameters

Parameters	Specifications	Remarks
Working Voltage Range	10V~54V	Voltage of battery pack corresponding to acquisition module
Single Voltage Acquisition Range	0~5V
Single Voltage Measurement Error	2mV
Unit Voltage Acquisition Circuit Number	6~12 road
Temperature Detection Range	-40ºC~110ºC
Accuracy of temperature measurement	±2ºC
Temperature acquisition routes	1~6 road
Balanced current	About 100mA
Power Consumption of System Working State	13mA
System Standby Power Consumption	4mA	Stand by within 2 minutes without communication
Power Consumption in System Sleep State	60uA	When there is no communication, sleep after 2 minutes
Working temperature range	-30ºC~75ºC
Storage temperature range	-40ºC~85ºC

 

1.2 Interface definition

 BSU01 (12S acquisition module) has one interface.

• J1(2*14) Joint Definition Description

  














 

Introduction of pin function of acquisition module J3(2*7)
NO.	PN.	direction	Function description		parameter
1	B-	input	The negative pole of the first battery corresponding to this module		/
2	B1+	input	Section 1 Positive Electrodes of Batteries		/
3	B2+	input	Section 2 Positive Electrodes of Batteries		/
4	B3+	input	Section 3 Positive Electrodes of Batteries		/
5	B4+	input	Section 4Positive Electrodes of Batteries		/
6	B5+	input	Section 5 Positive Electrodes of Batteries		/
7	B6+	input	Section 6 Positive Electrodes of Batteries		/
8	B7+	input	Section 7 Positive Electrodes of Batteries		/
9	B8+	input	Section 8 Positive Electrodes of Batteries		/
10	B9+	input	Section 9 Positive Electrodes of Batteries		/
11	B10+	input	Section 10 Positive Electrodes of Batteries		/
12	B11+	input	Section 11 Positive Electrodes of Batteries		/
13	B12+	input	Section 12 Positive Electrodes of Batteries		/
14	B12+	input	Section 12 Positive Electrodes of Batteries		/
15	T1+	input	Temperature Sensor 1,2 Interface		NTC (25ºC10K)
16	T2+	input
17	T1-/T2-	input
18	T3+	input	Temperature Sensor 3,4 Interface		NTC (25ºC10K)
19	T4+	input
20	T3-/T4-	input
24	T5+	input	Temperature Sensor 5,6 Interface		NTC (25ºC10K)
25	T6+	input
26	T5-/T6-	input
21	ISOSPI_LA	input	BSU is the first acquisition module (the acquisition module connecting the total negative battery): ISOSPI_HA connects the ISOSPI_H port of the host BCU, ISOSPI_LA connects the ISOSPI_L port of the host BCU. 2. BSU is the non-first acquisition module: ISOSPI_HA connects to the ISOSPI_HB port of a BSU, ISOSPI_LA connects to the ISOSPI_LBI port of a BSU.
22	ISOSPI_HA	input
23	/	/	/	/
27	ISOSPI_LB	output	The slave cascade communication line connects the slave interface of the next acquisition module.	ISOSPI_HA Connecting the Next Module
28	ISOSPI_HB	output		ISOSPI_LA Connecting the Next Module

2.Outline Dimensions and Wiring Diagrams of Products

2.1 Product Installation Dimension Diagram

 

2.2 Schematic diagram of master-slave communication connection

The first acquisition module BSU1 communication line input in_PI, in_MI corresponds to the host BCU communication line IP_H, IM_L, output OUT_PI, OUT_MI corresponds to the next acquisition module BSU2 communication line input in_PI, in_MI, and the communication lines between BSUs are analogous in turn, as shown in the following figure:

 

2.3  BSU01 (12S acquisition module) voltage detection wiring diagram

Wiring Note: First connect the voltage detection wiring to the battery, and then insert the voltage detection wiring interface into the 14pin interface of the BSU acquisition module.
 BSU test battery voltage is divided into two parts: high-end part detects B7-B12 high-six-series batteries from B6 + to B12 + and low-end part detects B1-B6 low-six-series batteries from B0 to B6 +. Voltage detection wiring distribution instructions:
(1)If the number of batteries n is even
The principle of high-end and low-end battery allocation is to allocate n/2 series batteries for high-end and n/2 series batteries for low-end. The corresponding arrangement wires are connected from the small number to the large number, and are not assigned to the battery voltage detection arrangement wires and connected together.
(2)If the number of battery strings n is odd
The principle of high-end and low-end batteries allocation is n/2 series batteries for high-end and (n/2) +1 series batteries for low-end. The corresponding arrangement wires are connected from the small number to the large number, and are not assigned to the battery voltage detection arrangement wires and connected together.

• Detection of 11 Series Battery Connection Diagram

 

• Detection of 11 Series Battery Connection Diagram

Note: B11 + and B12 + are joined together
 

• Detection of 10 Series Battery Connection Diagram

Note: B11 + and B12 + are joined together, B5 + and B6 + are joined together.
 

• Detection of 9 Series Battery Connection Diagram

Note: B10 +, B11 + and B12 + are joined together, B5 + and B6 + are joined together.

 

• Detection of 8 Series Battery Connection Diagram

Note: B10 +, B11 + and B12 + are joined together, B4 +, B5 +, B6 + are joined together.
 

• Detection of 7 Series Battery Connection Diagram

Note: B9 +, B10 +, B11 + and B12 + are joined together, B4 +, B5 +, B6 + are joined together.
 

• Detection of 6 Series Battery Connection Diagram

Note: B9 +, B10 +, B11 + and B12 + are joined together, and B3 +, B4 +, B5 +, B6 + are joined together.