HELTEC BMS DS0855 4S Active Balancer With Voltage Display Screen
Product Information
Specifications
- Manufacturer: Chengdu Heltec Energy Technology Co., Ltd
- Product Name: 4S Active Balancer with Voltage Display Screen User Manual (DS0855)
- Brand: Heltec Energy
- Website: www.heltec-energy.com
Technical Specifications
Main Parameters of the Display
| Name | Number of strings | Battery type | Single string voltage range | Measurement accuracy |
|---|---|---|---|---|
| Main Technical Indicators for Display | 4S | NCM/LFP | 2V-5V | – |
Main Parameters of the Active Balancer
| Technical indicators | Index |
|---|---|
| Product model | DS0855 |
| Applicable string number | 4S |
Product Usage Instructions
Installation and Assembly
Description of the Connection Position
- The display connection definition is shown in Figure 2, and its definition is shown in Table 3.
Connection Diagram
- Precautions for Use
- During use, follow the design parameters and use conditions specified to avoid damage to the instrument and battery pack.
- Connect the cable to the battery following the instruction manual’s order before connecting it to the instrument.
- Avoid using the product in high-temperature environments as it generates heat during use.
Product Overview
The 4S balancer has the function of full-disk equalization without distinction and automatic low-voltage sleep. The minimum voltage difference can be balanced to about 0.01V, and the maximum equalization current can reach 5A. When the voltage difference is 0.1V, the current is about 0.5A (actually it will be related to the capacity and internal resistance of the battery). When the battery is lower than 2.7V (ternary lithium/lithium iron phosphate), it stops working and enters sleep, and has over-discharge protection function. The battery voltage display supports real-time display of the voltage of the entire battery group and the voltage of a single string, and the numerical accuracy can reach about 5mV. This product is suitable for ternary lithium and lithium iron phosphate batteries.
The circuit board is sprayed with three-proof paint, which has excellent insulation, moisture-proof, leakage-proof, shock-proof, dust-proof, corrosion-proof, anti-aging, corona-resistant and other properties, which can effectively protect the circuit and improve the safety and reliability of the product. The actual object is shown in Figure 1.
Technical Specifications
Main Parameters of the Display
Table 1. Main Technical Indicators for Display
| Name | Parameters |
| Number of strings | 4S |
| Battery type | NCM/LFP |
| Single string voltage range | 2V-5V |
| Measurement accuracy | 0.5% / ±5mV |
Main Parameters of the Active Balancer
Table 2. Main Technical Indicators for Active Balancer
| Technical indicators | Index |
| Product model | DS0855 |
| Applicable string number | 4S |
| Applicable battery type | NCM/LFP |
| Operating voltage range | NCM/LFP: 2.7-4.2V |
| Balance voltage accuracy | 5mV (typical) |
| Balance mode | The entire battery group participates in active balancing of energy conversion at the same time |
| Balance current | When the voltage difference is about 1V, the maximum balancing current is 5A, and the balancing current decreases as the voltage difference decreases. The minimum balancing starting voltage difference of the instrument is 0.01V. |
| Undervoltage protection sleep voltage | NCM/LFP: 2.7V |
| Static operating current | 13mA |
| Operating environment temperature | -10℃-60℃ |
| External power | No external power supply is required, relying on the internal energy transfer of the battery to achieve the balance of the entire battery group. |
Installation And Assembly
Description of the Connection Position
The display connection definition is shown in Figure 2, and its definition is shown in Table 3.
Table 3. Connection Definition Table
| Number | Name | Definition |
| A | Black button | Screen sleep button (sleep/always on) |
|
B-→B1+→B2+ →B3+→B4+ |
B- | Negative pole of the first battery string |
| B1+ | Positive pole of the first battery string | |
| B2+ | Positive pole of the second battery string | |
| B3+ | Positive pole of the third battery string |
| B4+ | Positive pole of the fourth battery string | |
| C | Screen display area | Left: Single battery voltage; Right: Total voltage |
Connection Diagram
Precautions For Use
- During use, the design parameters and use conditions must be followed, and the parameters of this specification must not be violated. Otherwise, it is easy to damage the instrument and then damage the battery pack.
- During use, the cable must be connected to the battery in the order of the instruction manual, and then connected to the instrument after checking.
- The product will generate a certain amount of heat during use, so avoid using the product in a high temperature environment.
- If any abnormal situation occurs during use, please stop using it immediately, return it to the original factory or ask professional maintenance personnel for repair.
- This product has undergone a lot of reliability tests, and its reliability is far higher than that of general equalizing equipment on the market. At the same time, the process of the battery cell must be guaranteed to minimize the occurrence of combustion.
Safety Precautions:
Our company is committed to improving quality and reliability, but generally speaking, electrical products have a probability of failure. Depending on the use environment and conditions, the durability will also vary. Use a lengthy design when using it to avoid abnormal heating, smoking, and even personal accidents, fire accidents, social damage, etc. caused by overload use.
Documents / Resources
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