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Disassembly report: smart battery case for the iPhone XR Smart Battery Case (A2121)

via:充电头网     time:2019/3/14 15:35:51     readed:845

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Three new Smart Battery Case smart battery packs have a capacity of 1369mAh, which supports USB-PD fast charging (input) and Qi wireless charging standard (reception) compared with previous versions. "You can charge both the iPhone and the battery case," Apple said.

The three smart battery shells in Hong Kong are all priced at HK$999. Charging head network orders for the first time, for you to bring detailed evaluation and disassembly. Today's issue will bring you an open-box demolition of Smart Battery Case smart battery case for the XR version of the iPhone.

I. Opening of smart battery case (A2121) for the iPhone XR Smart Battery Case

The product is packaged in white background, with the same proportion of the size of the product appearance map printed on it, as in the past Apple design style.

Product specifications are printed on the back.

Product Name: iPhone XR Smart Battery Case; Color Version: Black; Model: A2121.

The price tag on the bottom is HK$999.

Packaging is pull-out design. The product body can be seen by pulling out the inner box from the top.

The whole weight of the packaged product is 215.1g.

The weight of smart battery protection case is 105.2g.

Packaging: Smart Battery Case Intelligent Battery Shell, Product Instructions.

Smart Battery Case's inner microfiber lining helps protect your iPhone fuselage. The outer layer is made of silica gel, which has soft and smooth touch and brings comfortable hand feeling. Soft and flexible frame design allows you to easily take or remove the protective shell.

Detailed specifications of the product are printed on the surface of the inner fiber. Input: 5V, 5.2V, 9V, 14.5V, 15V-3A max; Output: 8.7V-0.7A; Capacity 1369mAh (10.1Wh); Through a variety of certifications: CE certification, WEEE certification, Japanese VCCI certification, Japanese PSE certification, Australian RCM certification.

There is an LED status indicator at the bottom. Different colors correspond to different working conditions.

It can be charged by wired or wireless charging. When charging, the indicator is red.

When the power is full, the indicator is green.

Lightning joint close-up, fixed and not shaking.

2. Dismantling of the smart battery case (A2121) of the iPhone XR Smart Battery Case

The new product's silica gel shell is damaged. Through the crack, it can be seen that the silica gel shell is strengthened with thin steel plates, which makes the shell very hard. Only in the upper part of the shell, there is no steel plate, but there is a layer of plastic substrate, which can be bent to facilitate the loading of mobile phones.

Remove the lint layer and expose a layer of fiberglass board.

High temperature resistance, flame retardant, replacing stainless steel plate in the last generation products, lightweight design.

A light guide hole on a fiberglass board with a rigid plastic ring for shading.

When prying up the fiberglass board, he accidentally pierced the electric core and set up Mars and white smoke...

The internal battery pack adopts two series structure, and the battery voltage equalizes 3.785V. It belongs to high voltage battery.

Damaged batteries.

The next battery is labeled with capacity information and precautions. It is manufactured in Xinpu.

Below are two shield covers and spot-welded fixed reinforcements.

Lightning interface pressure plate, two screws fixed.

The circuit board is also screwed.

There are two-dimensional codes in the lower left corner.

Two shield covers can be removed by removing the reinforcement plate directly. The left side is the battery plug. There is a wireless charging coil contact between the two shield covers, and the bottom is the Lightning connector arrangement.

Remove the inner rubber support strip.

The head of Lightning was revealed.

Remove the base, and below it is the Lightning input interface.

Lightning connectors are wired to the circuit board.

Lightning Connector Base, below is the charging indicator.

Unscrew the fixing screw for the Lightning interface.

The pressure plate is inscribed with 8486 and 1104.

Open the battery connector.

Open the connector for the wireless charging coil.

Remove the battery from the housing.

All kinds of certification marks are printed on the back of the core.

Positive close-ups.

There are many components on the protective board, more than the protective board of cell phone batteries.

Battery protection chip.

Coulometers are still available on the battery protection panel to calculate battery capacity.

The right TI TLV2242 dual operational amplifier.

All components are sealed with glue.

Close-up of battery pack connector.

Close-up of battery pack connector.

Next, disassemble the wireless charging coil.

The back of the coil is a graphite thermal conductive paste, which is connected to the back of the circuit board to heat the circuit board.

The front view is connected to the back of the two shield covers.

On the back of the wireless charging receiving coil, the black is the diaphragm.

There is also a shield on the back of the circuit board.

Shield cover side view.

Shield cover side view.

Lightning enters a mother close-up.

Lightning enters a mother close-up.

Coil wire.

The coil is wound in parallel with multiple wires in order to reduce the thickness.

Coil stickers are bonded to PCBA modules.

Close-up of coil wire extension.

When the metal sticker on the surface of the wireless receiving coil is uncovered, the black adhesive layer can not be uncovered completely without sticking tightly to the coil. The lower layer of black ultra-thin magnetic isolator. Ultra-thin stainless steel with no magnetic absorption.

The thinnest part of the receiving coil module is 0.6mm.

The thickest part of PCBA is 4.6 mm.

The receiving coil module is glued to the PCBA module.

Close-up of PCBA module.

Close-up of PCBA module.

Open the shield and the soft black thermal conductive silicone grease inside the PCBA is the same as that used on the Mac processor.

At the bottom of the PCBA, near the Lightning Mother Seat, some of the components are resin-sealed.

Remove thermal conductive silicone grease to expose dense components.

Remove the resin near the base and expose several small components.

The sealant components underneath the knitting handle were also destroyed.

Upper Intersil isl9240, CSP package, visual inspection is a home-made model.

The lower TI tps62162 1A step-down converter.

Look at the back of the PCBA.

Remove two shield covers.

On the left is an inductor and several capacitors, as well as two MOS transistors.

There is a wireless charging receiving chip and three NPO capacitors in the shield on the right side.

Take a look at the wireless charging receiver chip, using the same IC of the iPhone: Broadcom BCM59355. Apple's six iPhones that support wireless charging, starting with the iPhone 8, also use this type of wireless charging chip.

The inner plastic shell of the protective shell.

There's a two-dimensional code next to it.

Connector Close-up of Lightning Connector Component.

Mother Close-up of Lightning Connector Component.

ChargerLAB POWER-Z MF001 tester was used to identify the authenticity of apple terminals. The Lightning plug cannot be identified after it is connected, because it is only a connector and has no circuit.

After the Lightning plug is connected to PCBA, the model of Lightning head is not displayed, but other information is displayed completely, such as ASIC is NXP original chip, PMU is original, iron head score is 100, etc.

Dismantle the family photo.

3. Summary of Dismantling Charging Head Network

The smart battery case of the iPhone XR Smart Battery Case uses two new popular USB PDs fast charging and Qi wireless charging technologies. Its internal structure is more complex than previous versions, and its workmanship remains at Apple's consistent manufacturing level.

Apple installed a wireless charging coil inside the protective jacket, so that the protective jacket has the same wireless charging and receiving function as the mobile phone. Ultra-thin coils with multiple windings, nanocrystalline soft magnetic materials and thermal conductive materials are used to improve the charging efficiency and heat dissipation in the process of wireless charging. The internal use of secondary lithium batteries can achieve higher charging and discharging efficiency and reduce heating.

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