How the Han Blade Battery Is Built

The BYD Han’s traction battery is not a generic lithium pack with a sedan wrapped around it. On BYD’s European product pages and Blade Battery notes, Han uses a Blade pack: long, flat lithium iron phosphate cells arranged as structural beams inside a honeycomb-like aluminium housing. That architecture is the thing an importer should be able to explain. Energy, range, and charge speed are then copied from the sheet that belongs to the VIN, because Han has been sold with more than one published energy figure and more than one test cycle. This article explains how the Blade design is described by BYD, what those descriptions do and do not prove, and which lines belong in a purchase file. AutoCN does not manufacture Han packs and does not certify a destination.

What “Blade” refers to on a Han

Blade is BYD’s name for a cell format and a pack method. The cells are long and thin, closer to a blade than to a familiar prismatic brick, and they use a lithium iron phosphate cathode. BYD’s European Blade explainer, dated 22 January 2023, states that the format launched in March 2020, that LFP is substantially cobalt-free in this telling, and that cell-to-pack construction raises space utilisation by 50 percent against the traditional packs BYD is comparing. The same note lists Han, Tang, and Atto 3 as Blade-equipped models. That is a family statement, not a promise that every Han in every year uses the same kilowatt-hour figure.

On the current European Han product page, BYD repeats the structural story: each cell acts as a beam; high-strength panels sit above and below the array; the pack is meant to take vertical load. The page also states that Blade packs have passed a nail penetration test without smoke or fire, with a published surface temperature of 30 to 60 degrees Celsius in that test. Those sentences are BYD’s laboratory language. They are not a crash-test score for a destination agency, and they are not a workshop procedure. Write them as manufacturer claims with a source date, then keep the destination’s own battery-safety rules in a separate paragraph.

LFP is a chemistry, not a range number

Lithium iron phosphate is chosen, in BYD’s wording, for slower heat generation, lower heat release, and no oxygen release from the cathode material as described on the Han page. That is a materials argument. It does not tell you how far a given Han will travel on a motorway in winter. Range still depends on pack energy, vehicle mass, speed, wheels, climate load, and the test cycle printed beside the figure. A buyer who says “it is LFP, so range is solved” has skipped the sheet.

How the pack is assembled, in buyer language

Cell-to-pack, in the Blade notes, means the long cells go into the pack structure with fewer module boxes than a conventional module-to-pack stack. BYD’s commercial claim is more cells in a given floor volume and therefore more energy in the same footprint. For an importer, the practical meaning is different. Service access, module-level replacement, and the way a damaged floor is repaired may all change when the pack is a structural array. Ask whether a damaged Han pack is repaired as modules, as a sealed pack, or as a vehicle-level assembly. If the exporter cannot name the service split, you do not yet understand the object you are buying.

The honeycomb language is about stiffness. BYD says the aluminium structure and the cell beams raise rigidity. That can matter in a side or underbody event, and it can matter when a workshop considers a used Han with floor scrapes after a container journey. It does not mean the pack is immune to crushed coolant lines, connector water, or impact to the cover. Inspect the cover, the orange cables, and the fasteners. A clean showroom underside is not a substitute for photographs of the VIN you intend to ship.

Energy, cycle, and why Han files get mixed

Han materials in different regions have published different energy and range lines. A BYD Americas Han flyer describes an 85.4 kWh Blade pack on an electric all-wheel-drive Han and prints a mileage after full charge of 602 km on the NEDC cycle. A BYD United Kingdom product note lists 85.4 kWh and 521 km marked as WLTP City, together with a 3.9 second 0–100 km/h figure and dimensions of 4,995 / 1,910 / 1,495 mm. The live European Han page shows WLTP combined and WLTP city as labelled fields but does not, in the text captured for this article, print those kilometres as static copy. Third-party tables often collapse those lines into one “521 km WLTP” sentence. That collapse is exactly how an importer writes a false annex.

The rule is mechanical. Copy the energy. Copy the cycle name. Copy the drive layout. Copy the date of the PDF. If a seller shows a China-market CLTC figure next to a European WLTP headline, reject the pair. If a seller shows a city figure as if it were combined, reject the pair. AutoCN will not invent a single official Han range for every port. The BYD brand page is a family map, not a substitute for the sheet.

What sits around the pack on European Han pages

The European Han page describes a silicon-carbide MOSFET inverter module, using aluminium silicon carbide in BYD’s wording, as a way to raise motor efficiency. It describes a heat pump as standard, intended to use residual heat from the surroundings, the powertrain, the cabin, and the battery. It states 0–100 km/h in 3.9 seconds for the electric all-wheel-drive layout and mentions vehicle-to-load as a mobile power function. It also publishes a drag coefficient of 0.23. Those are vehicle-level claims that surround the pack. They help you understand why two Hans with similar kilowatt-hours can still print different range lines, because mass, drag, wheels, and thermal load are not the pack alone.

They also create inspection tasks. Confirm that the heat pump hardware is present on the VIN if the quotation sold it as standard. Confirm that V2L, if advertised, appears in the on-car menu and that the outlet adapter is listed. Confirm that the dual-motor layout matches the sheet: a rear-drive Han and an all-wheel-drive Han are different parts lists even when both use Blade cells. Photograph the motor labels. A brochure AWD badge is not a second motor.

Warranty and cycle life are not the same sentence

BYD’s Han page states a long battery life with over 5,000 charge and discharge cycles. That is a durability claim for the Blade design as BYD describes it. A warranty is a commercial document with a term, a distance, and a state-of-health floor, and it is written for a market. The United Kingdom Han note reviewed for this article cited eight years or 160,000 km at 70 percent state of health for that market story. Other markets print other terms. Do not paste a cycle-life sentence into a contract as if it were a transferable warranty. Ask for the booklet that will travel with the VIN.

How an importer should talk about Han batteries

Speak in three layers. Layer one is the architecture: LFP Blade cells, structural array, cell-to-pack, published nail-test language. Layer two is the VIN sheet: energy, voltage class if printed, charge port, AC and DC peaks, heat pump, motor count. Layer three is the destination: workshop tool, high-voltage training, and the legal path for a damaged pack. Mixing the layers is how sales language becomes a liability. “Safest battery” is BYD’s marketing register on those pages. Your file should say “manufacturer published a nail-penetration result on date X” and stop there.

Used Han packs need a fourth layer: history. Ask for the diagnostic snapshot, the charge-throughput data if the tool can show it, and any repair record for the pack cover or the cooling circuit. A high state of charge on the day of sale is not state of health. If the seller cannot produce a snapshot that names the pack, treat remaining energy as unverified. Do not invent a degradation curve from a forum chart.

Frequently Asked Questions

Does every Han use the same Blade pack energy?

No. BYD has published more than one energy and cycle combination across regions and years. The Blade name tells you the cell family as BYD describes it. The kilowatt-hour line on the VIN sheet tells you the pack you are buying. If those two sentences are collapsed into one, the file is wrong.

Is the nail penetration test a legal approval in my country?

It is a manufacturer test narrative. BYD publishes a no-smoke, no-fire result and a 30–60°C surface-temperature band for that test. Destination approval, transport rules, and workshop safety rules are separate documents. Keep them in separate folders. Do not tell a customer that a lab nail test replaces a local certificate.

Why do some sites print 521 km as WLTP combined?

Because many tables drop the city and combined labels. One BYD United Kingdom note marked 521 km as WLTP City. European pages present both fields. Copy the label you actually see. If the label is missing, the number is not ready for a contract annex.

Do SiC devices change how I inspect the car?

They change the inverter story, not the underbody photograph. Confirm the inverter and motor codes on the sheet and on the labels. Efficiency claims belong to BYD’s product copy. Your inspection still looks for impact, coolant, connectors, and stored faults. An inverter chemistry slogan will not find a crushed tray.

Can AutoCN confirm the pack on a quoted Han?

AutoCN can help you place the model in the BYD family map. Confirmation is a VIN job: sheet, labels, and a diagnostic snapshot. Use the contact page to structure a sourcing request, and attach the pack photographs rather than a press image.

Conclusion and next step

Understand the Han pack as a published Blade architecture first, then freeze the energy and the cycle on the sheet that belongs to the car. That order keeps LFP safety language from pretending to be a range guarantee. It also keeps a used or parallel-export Han from inheriting a brochure that was printed for another market.

Read the family context on the AutoCN BYD page, use the information center for related battery explainers, and bring the pack codes when you ask for help. Architecture, then VIN, then destination.