Customized low temperature lithium battery manufacturer

Low temperature battery

The low temperature lithium battery is a special battery specially developed for the low temperature defects inherent in the performance of chemical power sources. Adopting innovative design concepts, using advanced formula systems and materials, rigorous process manufacturing processes and methods, overcoming multiple technical bottlenecks, and developing low-temperature lithium battery series products. Low-temperature lithium batteries are classified into discharge energy-type low-temperature lithium batteries and rate-type low-temperature lithium batteries according to discharge performance.

Classification and application of low temperature battery

Low-temperature lithium batteries are classified according to discharge performance: energy storage type low temperature lithium battery and rate type low temperature lithium battery.

Low-temperature energy storage lithium batteries are widely used in military tablet computers, paratroopers, military navigation devices, unmanned aerial vehicles, special flight power supplies, satellite signal receiving devices, marine data monitoring devices, atmospheric data monitoring devices, outdoor video. Identification equipment, petroleum exploration, and testing equipment, railway monitoring equipment, outdoor power grid monitoring equipment, military warm shoes, vehicle backup power.

Low-temperature rate lithium batteries are used in infrared laser equipment, glare-type armed police equipment, and acoustic armed police equipment.

Low-temperature lithium batteries are divided into application areas: military low-temperature lithium batteries, industrial low-temperature lithium batteries.

Divided into three series according to their use environment: civilian low temperature battery, special low temperature battery, extreme environmental low temperature battery,

A. civilian low-temperature lithium battery: -20 °C battery 0.2C discharge accounted for more than 80% of the rated capacity; -30 °C battery 0.2C discharge accounted for more than 50% of the rated capacity;

B. Special low-temperature lithium battery: 0.2C discharge of -40°C battery accounts for more than 80% of rated capacity; at -50°C, battery 0.2C discharge accounts for more than 30% of rated capacity;

C. Extreme environment low temperature lithium battery: When the temperature is -50 °C, the battery 0.2C discharge accounts for more than 50% of the rated capacity.

Low temperature battery custom manufacturer

1, low temperature battery custom manufacturer – Grepow

Founded in 1998, Shenzhen Grepow Battery Co., Ltd. is an advanced technology new energy company specializing in the development, production, and power management system development of nickel-hydrogen batteries and lithium-ion batteries. After decades of development, GREPOW has become one of the domestic advanced technology manufacturers of high-rate and large-capacity batteries.

With the steady improvement of the company’s market competitiveness, Grepow has become a custom manufacturer of low-temperature batteries with independent research and development and manufacturing. In the self-developed high-end manufacturing system and technological innovation, intellectual property protection, and other comprehensive capabilities, the company has greatly improved the difficulty and cost of domestic counterparts and formed the first echelon with internationally renowned companies in this professional market. Grapp will continue to adhere to the market demand-oriented, customer-centric, and continuously enhance product innovation.

2, Grepow low temperature shaped battery

Grepow low-temperature shaped battery can effectively improve the discharge performance of the battery in low temperature environment, reduce the internal resistance of the battery, and achieve the effect of high-speed discharge. Therefore, its battery life is longer and its power is stronger. At low temperature, discharging at 0.2c at -30 °C, the discharge capacity of Grepow’s low temperature battery is still more than 80%, which is one of Grepow’s core technologies, with the following advantages:

A, low temperature discharge performance, the lowest at -40 ° C with 0.2c discharge, the efficiency of 60% or more; in the -30 ° C environment, with 0.2c discharge, the discharge capacity of 80%;

B, wide operating temperature range, -40 ° C to 50 ° C;

C, excellent low-temperature cycle performance, charging and discharging at 0.2c in -30 °C environment, the capacity is maintained above 85% after 300 cycles;

D, high-security performance, meet UL/CE/UN certification;

E, flexible size, can be customized according to customer needs in size and shape.Every shape is possible, such as the following:

●Ultra Thin Battery●Curved Battery●Round Lipo Battery●Triangle Battery●Hexagon Battery●Ultra Narrow Battery●C Shape Battery●D Shape Battery●Polygonal Battery

F, with the ability to mass production, the battery consistency is good;

G, can generate large current at -40 ° C, maintaining large capacity;

H, in the working environment of -40 ° C, still maintain its excellent performance;

3, Grepow low temperature lithium iron phosphate battery

Grepow low-temperature lithium iron phosphate battery is a new technology developed through long-term research and development. We have added special functional raw materials to the electrolyte. The excellent raw materials and technology ensure the high-efficiency discharge performance of the battery at very low temperatures. Has the following advantages:

A, using superposition technology, low internal resistance;

B, excellent low temperature performance: discharge at 0.5C at -40 ° C, discharge capacity exceeds 60% of the initial capacity; discharge at -35 ° C, C, 0.3C, discharge capacity exceeds 70% of the initial capacity;

D, wide operating temperature range, -40 ° C to 55 ° C;

E, can be charged at -20 ° C;

F, using lithium iron phosphate chemical substance, high safety, and long cycle life;

G, flexible size, can be designed according to customer needs for the size and shape of the battery.

If you are interested in our products, please don’t hesitate to contact us at any time!
Email: info@grepow.com
Grepow Website: http://www.grepow.com/

Customized Shaped Lipo Battery Manufacturer in China

Shaped battery

Shaped batteries usually refer to batteries of unusual specifications (eg, batteries other than the size 1, 5, and 7 on the market). The shaped battery is composed of a packaging film, a positive electrode sheet, a negative electrode sheet, an insulating diaphragm, a tab, and an electrolyte, wherein the shape of the battery pole group may be in a regular or irregular geometry; the positive electrode ear of the battery pole group and The negative electrode ears can be respectively disposed on the same side or different sides of the battery pole group.

Shaped battery application field

Shaped batteries for smartwatches, smart wristbands, smart rings, medical devices (health care), wireless headsets, AR/VR, smart cards, smart clothing (heating clothes, heated gloves, smart shoes), tracking devices, smart locks, objects Internet and other fields. By custom-designing shaped batteries, the product’s irregular available space can be utilized with maximum efficiency to meet the shape of the product that meets consumer needs.

Shaped battery custom manufacturer

1. Manufacturer introduction

Founded in 1998, Shenzhen Grepow Battery Co., Ltd. is an advanced technology new energy company specializing in the development, production, and power management system development of nickel-hydrogen batteries and lithium-ion batteries. After decades of development, Grepow has become one of the domestic advanced technology manufacturers of high-rate and large-capacity batteries. Special-shaped battery custom manufacturer Grepow focuses on battery research and development for 20 years, the company has strong technical strength and excellent product quality.

Grepow has passed more than 20 European and American and domestic certifications such as ISO, RoHS, SGS, CE, UL, etc. It has more than 100 invention and utility model patents and has a battery management system (BMS). Each battery has undergone different processes and different processes. Screen layer. Quality assurance, currently the service industry is extensive, including automobiles, model aircraft, plant protection, aerial photography, surveying and mapping, security, power line detection and other applications on the battery, export products accounted for more than 40%, brand awareness is extremely high.

2. The strength of manufacturers

Grepow provides battery customization services. Based on the actual application needs of the customer, Grepow’s professional technicians evaluate the battery application proposal and customize the battery to your ideal shape. At the same time, customers can be based on the application area, service ambient temperature, battery condition, battery size, battery C rate, battery voltage, battery capacity, battery weight, battery pack size, battery pack capacity, battery pack voltage, battery-pack parallel and weight, etc.

Grepow’s production technology enables the mass production of high-voltage batteries of 3.8V and 3.85V in high-voltage, high-discharge rates, and fast-charging standard 3.7V lithium-ion batteries. Compared with the same industry, the product has better performance in terms of energy density increase. The battery bend, thickness, length, etc. can be communicated and manufactured. The battery developed by Grepow is based on the application. To meet the requirements of high voltage, high capacity and fast charging, the key technology lies in the formulation technology of battery materials.

3. Shaped battery display

The special-shaped battery custom manufacturer Grepow has completed the customized product display. Every shape is possible, such as the following:

●Ultra Thin Battery●Curved Battery●Round Lipo Battery●Triangle Battery●Hexagon Battery●Ultra Narrow Battery●C Shape Battery●D Shape Battery●Polygonal Battery

If you are interested in our products, please don’t hesitate to contact us at any time!
Email: info@grepow.com
Grepow Website: http://www.grepow.com/

How to Extend Lithium Battery Life?

Lithium polymer batteries are a new type of battery because of their high energy density, miniaturization, ultra-thinness, lightweight, high safety, and low cost. In terms of shape, the lithium polymer battery has ultra-thin characteristics, which can be made into batteries of any shape and capacity in accordance with the needs of various products. The outer packaging is aluminum-plastic packaging, which is different from the metal casing of a liquid lithium battery, and the internal quality is hidden. It can be immediately shown by deformation of the outer packaging, such as bulging.

In the use of the battery to adhere to six “no”, the correct way to use is the best way to extend battery life

1. Do not overcharge

This has requirements for the charger. Some chargers have a power-off function that is not perfect after being fully charged. As a result, the single-chip battery is fully charged to 4.2V and has not stopped charging. In addition, some chargers are used for a period of time, because the components are aging, it is easy. There is a problem that the battery does not stop. Therefore, when the lithium battery is charged, it must be taken care of. When it is found that the charging time is too long, it is necessary to manually check whether the charger is faulty. If there is a fault, unplug the battery as soon as possible, otherwise, the lithium battery If it is overcharged, it will affect the battery life, but it will directly explode and catch fire.

Also remind everyone that when charging, be sure to charge according to the battery’s specified charging C number or lower C number, not exceeding the specified charging current.

2. Do not over-discharge

The discharge curve of the battery shows that the voltage drops faster when the discharge starts, but the discharge drops to 3.9~3.7V, and the voltage drops not fast. However, once it drops to 3.7V, the voltage drop speed will increase. If the control is not good, it will lead to over-discharge, but the battery will be damaged, and the voltage will be too low to cause the bomber. Some model friends have a battery because they have fewer batteries, so the battery is short-lived. The strategy is to fly as little as one minute and the life span is one more cycle. Would rather buy two more batteries, and don’t fly the battery beyond the capacity limit every time. To make full use of the battery alarm, an alarm should land as soon as possible.

3. Do not save full power

Fully charged batteries can’t be fully charged for more than 3 days. If they are not discharged for more than one week, some batteries will be drummed directly. Some batteries may not be drummed for a while, but after several times of full power storage, the battery may be directly scrapped. Therefore, the correct way is to recharge after receiving the mission. If the battery does not have a mission within 3 days after use, please charge the monolithic voltage to 3.80~3.90V. After charging for a good reason, there is no flight for various reasons. It is also necessary to discharge the battery to 3.80~3.90V within 3 days after filling. If the battery is not used within three months, charge and discharge the battery once and continue to save, which will extend battery life. The battery should be stored in a cool environment. When storing the battery for a long time, it is best to put it in a sealed bag or a sealed explosion-proof box. The recommended ambient temperature is 10~25°C, and it is dry and non-corrosive.

4. Do not damage the skin

The outer skin of the battery is an important structure to prevent battery explosion and liquid leakage. The damage of the aluminum-plastic outer skin of the lithium poly battery will directly cause the battery to ignite or explode. The battery should be handled with care, and the strap should be tightened when the battery is fixed on the aircraft. Because it is possible to make a large dynamic flight or a crash, the battery will be pulled out because the cable tie is not tight, which is also likely to cause damage to the battery skin.

5. Can not be a short circuit

This often happens during battery wire maintenance and transportation. A short circuit can directly cause the battery to catch fire or explode. When it is found that the battery is disconnected after a period of use, it is necessary to re-solder the wire. Pay special attention to the soldering iron not to touch the positive and negative terminals of the battery at the same time. In addition, in the process of transporting the battery, the best way is that no battery is separately wrapped in the ziplock bag and placed in the explosion-proof box to prevent the positive and negative poles of a certain battery from being encountered at the same time due to bumps and collisions during transportation. Other conductive materials are short-circuited or broken and short-circuited.

6. Can not be frozen

This principle, many flying friends will ignore. In the north or high altitude areas, there will often be low-temperature weather. When the battery is placed outside for a long time, its discharge performance will be greatly reduced. If it is to fly at the time of normal temperature, it will definitely cause problems. At this time, the alarm voltage should be raised (for example, the single-chip alarm voltage is adjusted to 3.8V), because the voltage drop will be very fast in the low-temperature environment, and the alarm will immediately fall. In addition, the battery should be insulated. Before the take-off, the battery should be stored in a warm environment, such as inside a house, inside a car, or in an incubator. Quickly install the battery when taking off and perform the mission. Try to shorten the time to half of the normal temperature when flying at low temperatures to ensure a safe flight.

But Grepow low-temperature battery takes new technology from long-term development, we add special functional materials into the electrolyte, the excellent technology can ensure the great low-temperature discharge performance. Such batteries are widely used in military equipment, aerospace industry, deep diving equipment, polar region scientific investigation, electric power telecommunication, public security, medical electronics, and other low-temperature application fields.

Grepow low temperature shaped battery operating environment in the low-temperature range -40℃ to 50℃, can be custom for any shapes. And the low-temperature LiFePO4 discharging capacity of 0.5C at -40℃ is over 60% of initial capacity; 0.3C at -35℃ is over 70% of the initial capacity.

You can customize any shape, including the following shapes：

> Ultra Thin Battery

> Curved Lipo battery

> Round Lipo Battery

> Triangle Battery

> Hexagon Battery

> Ultra Narrow Battery

> C Shape Battery

> D Shape Battery

> Polygonal Battery

If you are interested in our products, please don’t hesitate to contact us at any time!
Email: info@grepow.com
Grepow Website: http://www.grepow.com/

lipo vs 18650 battery

Relatively speaking, the mobile power supply with lithium polymer battery should be the best in current storage capacity and safety performance, and the mobile power source made of polymer lithium battery is also slimmer, and the polymer battery core is short-circuited. The situation will not explode, at most, there will be expansion, which is longer and safer than the 18650 battery. LiPo Vs 18650 battery, which is better?

Lithium polymer battery classification

The so-called lithium polymer battery refers to a lithium-ion battery using a polymer as an electrolyte and is divided into “semi-polymer” and “all-polymer” in detail.

“Semi-polymer” means applying a layer of polymer (typically PVDF) to the barrier film to make the cell more adhesive, the battery can be made harder, and the electrolyte is still a liquid electrolyte.

The “all polymer” refers to the use of a polymer to form a gel network inside the cell and then inject the electrolyte to form an electrolyte. Although “all-polymer” batteries still use liquid electrolytes, the amount used is much less, which has greatly improved the safety function of lithium-ion batteries.

On the other hand, a polymer battery refers to a lithium-ion battery that uses an aluminum-plastic packaging film as an outer package, which is also known as a soft pack battery. This packaging film is composed of three layers, a PP layer, an Al layer and a nylon layer. Since PP and nylon are polymers, such a battery cell is called a polymer battery.

Lithium polymer batteries are a new type of battery because of their high energy density, miniaturization, ultra-thinness, lightweight, high safety and low cost. In terms of shape, the lithium polymer battery has an ultra-thinning feature and can be fabricated into a battery of any shape and capacity in accordance with the needs of various products. The battery can reach a minimum thickness of 0.4mm.

Lipo battery characteristics

1. No battery leakage

The battery does not contain liquid electrolyte inside, using colloidal solids.

2. Can be made into a thin battery

A lithium polymer battery with a capacity of 3.6V400mAh, its thickness can be as thin as 0.4mm.

3. Any shaped

The lithium-polymer battery can be designed in a variety of shapes.

• Ultra-Thin Battery
• Curved Battery
• Round Lipo Battery
• Triangle Battery
• Hexagon Battery
• Ultra Narrow Battery
• C Shape Battery
• D Shape Battery
• Polygonal Battery

4. The battery can be bent and deformed

The lithium-polymer battery can be bent up to about 90°.

5. A single high-voltage

Liquid electrolyte battery can only be connected in series with several batteries to obtain a high voltage, and the polymer battery can be made into a multi-layer combination in a single piece to achieve a high voltage because it has no liquid itself.

6. The capacity

The lithium-polymer battery will be twice as high as the same size lithium-ion battery.

18650 battery features

1. Not customizable

SONY always wants to use lithium-ion batteries as an alkaline battery. There are certain industry standards, like the 5th and 7th batteries, which are basically the same in the world. However, because the great advantage of lithium-ion batteries is that they can be shaped according to the needs of customers, there is no uniform standard. So now, the lithium-ion battery industry is basically a standard type of 18650, and others are based on customer needs. Planned.

2. Poor security

We know that lithium-ion batteries are in extreme conditions (such as overcharge, high temperature, etc.), and there will be intense chemical reactions inside, and many gases will occur. The 18650 battery uses a metal casing and has a certain strength. When the internal air pressure reaches a certain time, the steel shell will rupture and blast, causing a terrible safety accident.

This is why the room where the 18650 battery is tested must generally be maintained in layers, and it is absolutely impossible to enter the test. Polymer batteries do not have this problem. Even if they are at the same pole condition, because the strength of the packaging film is low, as long as the air pressure is slightly higher, it will rupture and no blasting will occur. The worst condition is combustion. Therefore, lithium polymer batteries are superior to 18650 batteries in terms of safety.

3. Low energy density

The average 18650 battery capacity can be about 2200mAh, so the energy density is about 500Wh/L, and the energy density of the lithium polymer battery can be close to 600Wh/L.

Polymer batteries can be customized according to customer needs, and the shape is varied and varied and can be customized.

What Issues Need to be Addressed in Wearable Devices?

What Issues Need to be Addressed in Wearable Devices?

The hot areas of the past were hit during the heyday, and many people in the scientific and technological circles turned their attention to the field of wearable devices. Today, this article will explore the issues that need to be addressed in the field of wearable devices and the way out for the future.

1. The amount of investment in the wearable device sector is falling

We define the field of wearable devices here, including companies that develop electronic devices that can be worn or placed on the body, as well as companies that can wear wearable medical devices, AR/VR heads and other technologies.

The amount of venture capital is declining, mainly because investment institutions are beginning to evade the risk of high valuations and are tired of the almost similar functions that wearable devices bring. As a result, new wearable device companies may be under financial pressure.

Current wearable devices offer two main functions: biomarker tracking and the smallest device that can replace a smartphone (AR/VR head-display device is a relatively independent field, we will analyze it in another report). Therefore, wearable devices fall into two categories: health trackers and smartwatches.

2. Problems in the field of wearable devices

(1) Accuracy

The key issue with wearables is to prove their true value, not just the extended applications of some smartphones. For many people, smartwatches and health trackers are an expensive accessory product that has been very good and doesn’t feel like it’s missing.

Improved integration with wearable device-specific applications, such as multi-platform payment via NFC, digital assistants like Google Now, stand-alone connectivity, and improved biomarker tracking, all of which can drive wearables closer to the need The function of the field.

In addition, the core value of those health tracking products is to accurately measure the physiological activities of the human body and must prove that their measurement accuracy and value exceed the bio-sensing capabilities of those smartwatches, otherwise they can be completely used by smartwatches. Replaced.

Therefore, most health trackers focus on persistence and accuracy. The former has achieved considerable success. Although the latter has been satisfactory in measuring heart rate in bracelet products, it is necessary to accurately measure other physiological indicators. A comprehensive application of multiple sensors and cross-validation of results is required.

(2) Interactivity

Wearables are very small, and simple features and gestures are tedious. Therefore, expanding interactivity is also a big challenge. Google introduced Soli, which enables remote gesture control by adding a small chip to the smartwatch so that people can perform operations without touching the surface.

There is still some whimsy that the future may be possible, such as dragging and dropping the application in the smartwatch onto the person’s arm and then operating it; calling the keyboard from the smartwatch for virtual input.

(3) Extended battery life

Extending battery life can make wearable devices more competitive. Custom shaped battery to fit into any and all available space in your product for maximum efficiency. By utilizing Grepow’s proprietary formula in our custom shaped cells, it will empower you against your competition.

Smartwatch is generally round in shape with a diameter between 42 to 45mm.  Although they are in round shape, most of them still use square-shape batteries which do not utilize the entire space of the watch they power. In contrast, customized batteries created by Grepow better fit into the empty spaces in watches and also increase the maximum capacity available.

Furthermore, Grepow provides smartwatch battery solutions for high discharge rates and high voltage cells.  Low-temperature cells can also be manufactured so that they can work even at -40℃.

Grepow is ultimately a one-stop-shop for customization services.  Customers need only focus on the design of the product, and Grepow will provide the best solution for their specific battery systems.

(4) Extension of service life

These expensive smartwatches and health trackers need to be more durable to maintain high prices. Researchers are experimenting with new chemical materials that can be modified to be as tough or soft as plastic under external forces and internal stresses. There is also a self-healing electronic material that can self-recover to the slight wear and pressure deformation caused by everyday wear, which will also be an important niche application.

These technologies have basically been proved by experiments, but still need to cross the threshold of mass production and commercialization, in order to bring new development space for wearable devices.

3. Application scenarios with opportunities in the future

(1) Consumer applications

In addition to the existing functions of health indicator tracking and smartphone expansion in the future, wearable devices are likely to develop in the following areas.

Clothing

In the future, we may see shirts, T-shirts, etc. that can change colors and styles. Wearable accessories that can eliminate people’s small pain points will also become popular, such as shoelaces that can be automatically fastened without spreading. If the price of these items is appropriate, it will lead to a larger consumer group, such as professional athletes or sports enthusiasts.

Luxury

The style has always been a key consideration for wearable devices, so luxury goods may also be a direction for the development of wearable devices. For example, luxury watch manufacturers have begun to consider adding the features of smartwatches to their existing product lines. Jewelry with positioning and notification by vibration already exists.

Security Products

Future safe applications for wearable devices may include monitoring ambient air or blood alcohol levels or levels of hazardous chemicals. Such monitoring capabilities may be combined with a range of applications.

Personal Assistant

Existing features such as Siri, Alexa, or Google Assistant are still very limited, and the emergence of artificial intelligence will enable the personal assistant to achieve it. Digital personal assistants (PDAs) based on location, time, and other metrics can perform many functions, and this is where many tech giants have begun to enter and have achieved results.

But personal assistants have a lot of usage scenarios to be developed, which also makes product developers and investors willing to invest heavily in the field. So far, no company has built technical barriers, and early-stage costs and suppliers and supply chains remain important considerations. As far as software is concerned, many resources are open source, so there is a lot of room for development. This area will be the biggest direction for the imagination of wearable devices.

(2) Enterprise application

Pharmaceuticals

Accurate measurement of drug compliance is a key issue for pharmaceutical companies and biotech companies. In addition, the ability to more accurately measure the physiological response of patients participating in drug trials can also speed up the process of drug development. Therefore, there may be significant opportunities in the more complex biotechnology field.

Medical insurance

If wearable devices can collect medical-grade data, then this data can be used by insurance companies, and can accurately price individuals more accurately, and improve risk analysis to attract more customers. Corporate groups can also customize insurance plans for specific employees, saving on health insurance costs.

Advertising

Wearables can fill the gap between online and physical ads, even more than smartphones. With wearables, you can locate stores and pay, and marketers can combine data collected online with offline data to offer consumers more special offers and discounts.

Logistics

In addition to tracking workers in the warehouse to determine if they are negatively completed, personal management of complex projects is another high-profile application for wearables. For example, construction workers can use wearable devices to track physiological status and location, and help them with specific tasks; in order to prevent accidents, health supervision can also be performed for professional workers.

Asset Management / Landlord

House rental allows tenants to download an application to manage access, use of shared facilities, etc., and to make payments. In addition, monitoring energy consumption can be one of the development directions of wearable devices in this field.

The development bottleneck currently encountered by wearable devices is largely due to problems such as functionality, interaction, and service life. In fact, the use of wearable devices is very rich. At present, many wearable device manufacturers mainly focus on the development of hardware products, and the entire hardware field is developing slowly. If you can better integrate with the scene based on technological development, the future of wearable devices will be even better.

If you are interested in our products, please don’t hesitate to contact us at any time!
Email: info@grepow.com
Grepow Website: http://www.grepow.com/
US RC battery shop: https://www.genstattu.com/
EU RC battery shop:https://www.gensace.de/