48V50ah/48V500ah Llithium Battery for Communication Base Station
| Price: |
Negotiable/Piece |
| Min Order: |
100/Piece |
| Pay Type: |
L/C,T/T |
| Prod Model: |
LEV05 |
| Rated Voltage(V): |
48 (Customized) |
| Rated Battery Pack Capacity (Ah): |
50/500 (Customized) |
| Rated Battery Pack Energy (Kwh): |
2.4/24 (Customized) |
| Voltage Range (V): |
40~58.4 (Customized) |
| Max. Disharge Current (a): |
50 |
| Standard Discharge (a): |
25 |
| Waterproof Level: |
IP54 |
| Operating Temperature Range: |
-20~65ºC |
| Storage Temperature Range: |
-20~70ºC |
| Storage Humidity: |
5%~90% |
| Type: |
Lithium-Ion Battery Pack |
| Connection Mode: |
Series and Parallel |
| Standard Voltage: |
Customized |
| Usage: |
EV/Hev/Phev/Erev |
Product Description
Product OverviewThis product is LiFePO4 Li-ion battery pack (with BMS), composed of 16pcs battery cell 50AH in serial mode. BMS is an important part of battery pack, could achieve protection for battery pack. The battery pack enjoys high specific energy and long life, be safe and reliable, can be used in wide temperature range and be applied to load of working current no more than 60A, is an ideal green power product. Specifications| Item | Standard | Remark |
| Nominal voltage | 48V | |
| Capacity | 50Ah | |
| Size(L*W*H) | 442*132*600mm | |
| Weight | 38kg | |
| Standard discharge | 25A | |
| Maximum continuous discharge current | 50A | |
| Discharge cut-off voltage | 40V | Battery over-discharge protection |
| Charge voltage | 58.4V | |
| Standard charge | 15±0.5 A | |
| Resistance | ≤80mΩ | Between discharge port of positive and negative extremes |
| Waterproof level | IP54 | |
| Operating temperature range | -20~65ºC | |
| Storage temperature range | -20~70ºC | |
| Storage humidity | 5%~90% | |
| Implementation Standards | QC/T743-2006 | |
| Charge/discharge interface | | |
| Shell material | (1.5mm) cold-roll steel sheets | |
PCM Parameter| Item | Standard Value |
| Overcharge protection(V) | 3.65 |
| Overcharge recovery | 3.4 |
| Discharge protection (V) | 2.5 |
| Discharge recovery (V) | 2.7 |
| Over-current protection (A) | 70 |
| Balanced voltage (V) | 3.4 |
| Balanced current (mA) | 50 |
| Resistance (mΩ) | 80 |
Test conditions Test ConditionsUnless otherwise specified, all tests are done at temperature between 15ºC~35ºC, relative humidity 25%~85%, atmospheric pressure 86kPa~106kPa.Test Instrumentsa) DC voltage meter measures voltage with a precision not less than 0.5 , resistance no less than 1kΩ/V;b) DC ammeter accuracy is not less than 0.5;c) Thermometer should have appropriate measuring range, the division value should not exceed 0.5ºC;d) Timer should be distinguished by hours, minutes and seconds, at least should have accuracy of±1%. Electrical, Secure and Mechanical Performance TestingStandard ChargeCharge with constant current 0.3C(A) to 58.4V, then charge with constant voltage 58.4V to current 0.1C(A);Standard DischargeAfter charge by (5-1) method, discharge at 0.5C(A) constant current to battery over-discharge protection or total voltage lowers 40V;Battery CapacityDischarge by (5-4) method, record discharge time(hours), capacity(Ah)=0.5C(A)*Discharge time(hours);Electrochemical Properties| Test Items | Test Methods | Technical Requirements |
| Nominal voltage | Standard discharge the battery, and then put aside for 1 to 3 hours | Voltage≥48.0V |
Discharge capacity
at 20ºC | Standard charge the battery. Discharge at 1C(A) current. Record discharge capacity | ≥95% Nominal capacity |
Discharge capacity
at -20ºC | Standard charge the battery, and then put aside at -20ºC±2ºC for 20h. Discharge at 1C(A) current to cut-off voltage to record discharge capacity | ≥70% Nominal capacity |
Discharge capacity
at 55ºC | Standard charge the battery. and then put aside at Put aside at 55ºC±2ºC for 5h. Discharge at 1C(A) current to cut-off voltage to record discharge capacity | ≥95% Nominal capacity |
| Charge retention and capacity recovery capability | Standard charge the battery, and then put aside at room temperature for 28d or 55ºC for 7d | Charge retention rate≥80%
Recovery rate of charge≥90% |
| Cycle life | Charge at 0.5C(A) in 20ºC±5ºC to 80% soc.Discharge at 1C(A) to terminal condition.Test the capacity according to standard charge and discharge methods for every 25 cycles. When the capacity is less than 80% of the nominal capacity, terminate the test. | ≥1000 cycles
|
Safe performance test | Test item | Test method | Technical |
| Short circuit test | After charge batteries, place at 20ºC±5ºC for 1h. Short the battery for 10min, the external circuit resistance should be less than 5mΩ. | No explosion,
no fire |
| Squeeze test | Squeeze plate is shown below: one side is flat, one side is the opposite board. Head diameter of the opposite plate semi-cylindrical extrusion is 75mm.Typical spacing between the squeeze head is 30mm.
Squeeze direction: Force on the direction perpendicular to arranged battery.
Squeeze extent: Squeeze battery to 85% of original size. Keep 5min, then squeeze the battery to 50% of original size.
| No explosion,
no fire |
| Prick test | Pierced three batteries quickly from the direction perpendicular to the series batteries with the nail plate which is conductive. Every nail pierces through at least three parallel batteries. Keep the nail in the batteries for at least 1h. Diameter of the nail is 3~8mm, length is more than 90mm.
| No explosion,
no fire |
| Heating test | Put the battery in constant temperature box of 85ºC±2ºC, keep 120min. | No fire,
No explosion
|
| Over-discharge test | Charge the battery. Place at 20ºC±5ºC for 1h, then discharge in 1/3C current at same temperature until some cell's voltage is 0V(if there are electronic protection circuit, remove it temporaryly). | No explosion,
no fire,no leakage |
| Over-charge test | Charge in accordance with the following two ways(Choosing one between the twos).- Charge at 1C current for 90min or until voltage of some single battery reaches 5.0V(stop test when fulfills either condition).
- Charge at 3C current until the voltage of some single battery reaches 10.0V, then stop the test.
| No explosion,
no fire |
Mechanical properties| Test item | Test method | Techanical requirements |
| Insulation performance | Detective the insulation resistance between positive pole and shell (mounting screws), negative pole and shell (mounting screws) with insulation tester(500V file). | ≥10MΩ |
| Vibration performance tests | Test vibration performance of three different direction (flat, on its side, erected)
(1) Side Lay
(a) At peak acceleration is 5G to take 2000 times
sinusoidal cycles in the frequency range 10~30Hz.
(b)Raise frequency from 10Hz to 90Hz, then return to 10Hz.Take sine sweep vibration for 60 times with scan rate of 1Hz/s.The entire cycle is 6h. Adopt following acceleration levels:
Frequency range(HZ) Peak acceleration(G)
10~20 3.0
20~40 2.0
40~90 1.5
90~140 1.0
140~190 0.75
(2) Keep upright
(a)At peak acceleration is 3.5G to take 4000 times sinusoidal cycles in the frequency range 10~30Hz.
(b)raise frequency from 10Hz to 190Hz, then return to 10Hz,take sine sweep vibration for 60 times with scan rate of 1Hz/s.The entire cycle is 6h. Adopt following acceleration levels:
Frequency range(HZ) Peak acceleration(G)
10~15 2.5
15~30 1.75
30~60 1.25
60~110 1.0
110~190 0.75
(3)Flatwise
Test according to (1) methods.
Test DC resistance, insulation, sealing performance of battery module before and after vibration. Test the data acquisition and transmission is abnormal or not after vibration if there is protection board.
| Discharge current sharply change,abnormal voltage,battery shell deformation,electrolyte leakage is not allowed. |
Storage, Maintenance and Transportation StorageWhen the battery pack to be long-term stored,charge the battery pack to about 50% capacity( after discharging completely, charge for 5 - 6h at 2A),store in dry and ventilated place, charge 1 to 2h for every 3 months. The battery pack and charger should be stored in clean,dry and ventilated place, avoid contacting with corrosive materials and be away from fire and heat. TransportationThe battery pack and charger should be packaged for transport, prevent excessive vibration, shock or extrusion in transport process and prevent the sun and rain.The battery pack can be transported by cars, trains, ships, aircraft and othe vehicles etc. Maintenancea)The battery pack should be stored in 40%~60% charged capacity.b)If battery pack is not used for a long period, it should be replenish charging one time for 1 to 2h for every three month.c)In the maintenance process, please do not disassemble the battery pack, otherwise it will cause a decline of battery performance.d)Forbid to remove any cell in the battery pack. Forbid dissecting battery cells. Battery Handling Precautions* Forbid to immerse battery in water or allow it to get wet!* Don't charge, use and store battery near a heat source such as fire and heater! If the batteryleaks or releases strange odor, pls remove it from place near fire place immediately. Fully charge the battery before first-time using.* Forbid to reverse the positive and negative pole!* Forbid to throw the battery pack into fire or heat it!* Forbid to short-circuit battery with wire or other metal objects!* Forbid to nail, knock or trample battery!* Forbid to disassemble the battery and battery pack in any way!* Forbid to put the battery into microwave oven or pressure vessel!* If the battery pack gives off odor, gets heat, deformation, discoloration or appears any abnormal phenomenon, stop using it; please remove the battery from electrical appliances and stop using it, when the battery is being used or charged!* Forbid to use battery pack in a very hot environment, such as under direct sunlight or in car on hot day. Otherwise, the battery pack will overheat, which will affect battery performance and shorten battery life!* If the battery leaks and electrolyte leakage enters into the eyes, do not rub, rinse with water immediately and seek immediate medical assistance. If not in time, eyes will be hurt!* Ambient temperature will affect the discharge capacity, if the ambient temperature is beyond the standard enviroment (25±5ºC), the discharge capacity will drop! Special Considerations:* During charging, if there is odor and unusual noise, immediately stop charging.* During discharging, if there is odor,unusual noise,immediately stop charging.* If there are above phenomenon, please contact the manufacturer, do not disassemble by youself.Product show
Battery quality control for after-saleAll 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-POWHuizhou 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.
FAQQ 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 30 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 acceptable.
Huizhou E-POWER electronics Co., Ltd was founded in 2006, advocating green, energy -saving and environmental protection as the future development concept, With R&D sales, manufacturing and services as a set, E-POWER is a professional supplier od battery management system and battery system assembly, Leading and with high market share in domestic. E-POWER moved to the new factory in Zhongkai that covers an area of 40000 square meters, equipped with advanced SMT production lines, automatic module lines, at the same time, including advanced test platforms such as charge and discharge, waterproof and dustproof, shock, extrusion, salt fog and so on to meet the production capacity and high quality products output. E-POWER successfully passed the TS16949, ISO14001 and OHSAS18001 certification, more than 400 patents have been applied and more than 300 patents have been authorized. E-POWER has strong technical strength, a number of employees with doctor and master degrees form a professionally technical team, obtained the tile of state High-Tech enterprise, With leading technology and high reliability team, our BMS have been widely used in Electric Bus for many maior international events like the Olympics Games(Beijing 2008), World Expo(Shanghai 2010), Asian Games ( Guangzhou 2010), World Ecomomic Forum Summer Davos(Tianjing2010 ).
As well as commercial vehicles and passenger cars of Changan, Great Wall, JAC, Beijing Automotive, GAC, Kinglong, Dongfeng, Foton, and so on. E-POWER has a conducted a wide range of cooperation with many well-know battery companies, such as Samsung, Toshiba, CALE, Guoxuan High-Tech, Lishen and so on.
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