BMS Introduction
The battery management system is mainly used for the power battery system of the electric automobile (EV, PHEV, or HEV). The battery managment system can detect the power battery one line and monitor the power battery in ral time to provide the voltage, current, temperature, SOC, state of insultaion and other information, and meanwhile judge the operationg state of the battery and the discreteness of battery pack in real time. If there is a failure, the battery management system sends the failure signal to the entire automobile and alarms.
EV05 series BMS : Product Features
1. Compatibility: The The platform covering the whole range of lithium ion batteries for electric vehicles, including EV (Electric Vehicle), BEV (Battery Electric Vehicle), EREV (Extended-Range Electric Vehicles), PHEV (Plug-in hybrid electric vehicle) and HEV (Hybrid electric vehicle), and covering commercial vehicles, passenger cars, bus and special vehicles, and compatible with lithium manganate battery, ternary lithium battery, lithium iron phosphate battery and lithium titanate battery.
2. Automotive grade: Product software, hardware, structural design in accordance with the automotive standard design.
3. High safety: The product has been specially designed and tested, including in the aspects of system function self test, nomally work under high and low voltage, protection grade, redundancy backup and anti-abuse.
4. High integration: Using large-scale integrated circuits, and integrated system design.
5. Wide scalability: The product adopts a distributed or centralized architecture, and the detection unit can support up to 30 at most, and supports 1-300 series batteries in series.
6. flexible configuration: The product has special PC software, and the product can be flexibly configured on different types of application requirements.
Product Application
1. Electric Vehicle: EV (Electric Vehicle), BEV (Battery Electric Vehicle), EREV (Extended-Range Electric Vehicles), PHEV (Plug-in hybrid electric vehicle) and HEV (Hybrid electric vehicle)
2.Vehicles types: including commercial vehicles, passenger cars, environmental sanitation vehicles
3. Battery types: LMO,LFP,NCM ,LTO
Technical parameters
| Item | Min. Value | Standard value | Max. Value | Unit | Remark |
| Low-voltage power supply | Normal working range | 6 | 12 / 24 | 32 | V | |
| Rated working current | | 0.2/0.11
0.034/0.017
0.036/0.018
0.038/0.019
0.04/0.02 | | A | BCU
24S Slave BMU
36S Slave BMU
48S Slave BMU
60S Slave BMU |
| Dormancy power consumption | -- | 0.5 | 1 | mA | |
| Delayed power-off time | | 1 | 1 | s | |
| Digital input port | Vih | 5 | 12 | -- | V | |
| Vil | 0 | 1 | 2 | V | |
| Input impedance | 10 | 50 | 100 | KΩ | |
| Acquisition cycle | -- | 50 | 100 | ms | |
| Digital output port | Voh | 6 | 12 | -- | V | |
| Vol | 0.3 | 0.6 | 1 | V | |
| Output capacity | 10 | 10 | 100 | mA | |
| Analog input port | Detection range | 0 | 12 / 24 | 36 | V | |
| Detection accuracy | -- | ±0.2 | ±0.3 | V | |
| Acquisition cycle | -- | 50 | 100 | ms | |
| PWM input | Duty cycle range | 0 | | 100 | % | |
| voltage range | 0 | | 32 | V | |
| Detection accuracy | | | 1 | % | |
| Frequency Range | | 1 | 2 | KHz | |
| Low side switch | Rated current | 0 | 1 | 4 (100mS) | A | |
| On resistance | -- | 0.3 | 0.36 | Ω | |
| Turn off time | -- | 50 | 100 | us | |
| Opening time | -- | 50 | 100 | us | |
| High side switch | Rated current | 0 | 1 | 4 (100mS) | A | |
| On resistance | -- | 0.05 | 0.1 | Ω | |
| Turn off time | -- | 50 | 100 | us | |
| Opening time | -- | 50 | 100 | us | |
| Total current detection | Detection range | -- | ±300 | -- | A | |
| Detection accuracy (≤30A) | -- | ±0.3 | ±0.5 | A | |
| Detection accuracy (> 30A) | -- | <±0.5 | <±1 | % | |
| Acquisition cycle | -- | 5 | 10 | ms | |
| Total voltage detection | Detection range | 0 | 400 | 800 | V | |
Detection accuracy
(20 ~ 800V) | -- | 2 | 4 | V | |
Detection accuracy
(<20 or> 800V) | -- | 5 | -- | V | |
| Acquisition cycle | -- | 5 | 10 | ms | |
| Leakage current | | | 1 | mA | |
| NTC temperature detection | Temperature measurement range | -40 | | 125 | ºC | Slave BMU Function |
| Accuracy | -- | 1 | 2 | ºC |
| Acquisition cycle | -- | 500 | -- | ms |
| Temperature measurement number | 1 | -- | 10 | -- |
| Single cell voltage detection | Detection range | 0 | 3 | 5 | V | Slave BMU Function |
Detection accuracy
(2V ~ 5V @ -25 ºC ~ 55 ºC) | - | ±5
(0ºC~40ºC) | ≤±10 | mV |
| Acquisition cycle | -- | 20 | 30 | ms |
| Leakage current | | | 100 | uA | |
| Environmental adaptability | Temperature range | -40 | | 85 | ºC | |
| Relative humidity | 5 | | 95 | % | |
| Pressure | 86 | | 106 | kPa | |
| Weight | BCU (Battery Control Unit) Weight | 0.65KG |
| 24S-BMU weight | 0.63KG |
| 36S-BMU weight | 0.84KG |
| 48S-BMU weight | 1.01KG |
| 60S-BMU weight | 1.25KG |
Functional Description
1. single cell voltage detection (BMU module function);
2. single cell temperature detection (BMU module function);
3. the total voltage detection of battery pack;
4. the working current detection of battery pack;
5. Balanced management: active balanced + passive balanced, with balanced failure self-diagnosis function (BMU module function);
6. Thermal management: support heating management + cooling Management (BMU module function);
7. Charge management
8. Discharge management
9. Battery pack SOC estimation
10. Battery pack SOH estimation
11. Battery malfunction analysis and online alarm
12. CAN-bus equipment communication with on-vehicle controller and display system etc. (vehicle factory standard or follow to E-POW standard)
13. Communication with the ground charging set and hardware interface, (national standards, enterprise standards or E-POW standard);
14. Safety protection (over charge, over discharge, over-current, over temperature, insulation leakage, smoke sensor, fast pull insurance, relay);
15. BMS self-checking function;
16. Support 5 types Hardware wake-up, and support CAN bus remote wake-up;
17. Support delayed to turn off power management;
18. Support to record the operation of data, fault data, historical event data;
19. Support NTC temperature sensor detection (BMU module function);
20. Hardware self-diagnostic function;
Product pictures
Our successful case:
Olymppic Games(Beijing 2008),
World Expo(Shanghai 2010),
Asion Games(Guangzhou 2010),
World Ecomic Forum Summer Davos (Tianjing 2010)
For EV bus, commercial vehicles and passenger cars, etc.
We are the only one designated lithium battery pack supplier of Fuxinghao CRH (China Railway High-speed)(350km/h)
Battery quality control for after-sale
All of E-POW battery cells in a pack are with very high consistency.In a pack, each cell has its ownsole electronic code(ID number) for quality control after-sale. Assume one cell in a pack is damaged in any reason after several years later, we could provide a exactly same cell to the client to replace this damaged one(same voltage, capacity, impedance,etc.), in order to make sure all of the cells in this pack with very high consistency. E-POW has a strong system working for this.
About E-POW
Huizhou Epower electronics co., ltd (E-POW) was founded in 2006, mainly engaged in Electronic Vehicle and ESS product development, production, sales and services, is a leading provider of battery management system(BMS) with high tech and high market share.
With high performance and high reliability, our BMS has been mass produced and widely used in Electronic Bus for many major international events , as well as commercial vehicles and passenger cars.E-POW has conducted a wide range of cooperation with many well-known companies. The produced BMS has passed strict testing and trial use of car manufacturers, batch supply realized.
E-POW E-Power have total 800 staffs, including more than 230 research and develop staffs, and has strong technical strength, a number of employees with doctor and master degrees form a professionally technical team, also builds strong cooperation relationship with famous BMS institutes such as Beijing Jiaotong University, South China University of Technology. The products have won Software Products certification. E-POW has owned more than 100 patents about BMS and passed TS16949, ISO 90001, OHSAS18001, ISO14001 ,IRIS (rail transact certification) etc. quality management system, and obtained the title of China High-Tech enterprise.
FAQ
Q What is the MOQ ?
A 100pcs
Q Can I mix different designs?
A Sure!
Q Can I get a lower price if I order large quantities?
A Yes, cheaper prices with more bigger size orders.
Q Can I add or delete items from my order if I change my mind ?
A Yes, but you need to tell us asap. If your order has been done in our production line, we cannot change it. It is about 2 days after confirming the order.
Q Can I get the pre-production sample ?
A Yes, we will send you pp sample, after you confirm, then we will start production.
Q When you ship my order?
A Normally 20 days after receiving your payment, but it can be negotiated based on order qty and production schedule. If special requirement, we can negotiate.
Q How about the quality guarantee period?
A three year! If special requirement, we can negotiate.
Q How can you guarantee the production quality ?
A Our production quality follow ISO9001, ISO16949, ISO 90001, OHSAS18001, ISO14001 ,IRIS, SGS, etc. standard . We have 10 years experience of QC team. We have strictly quality control system in our production process. We have many times inspection for each finished product before package,and Third party inspection accepxable.
