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Old 30th March 2020, 12:56   #1
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Default BYD launches new blade battery with revolutionary EV safety standards

BYD launches new blade battery with revolutionary EV safety standards-screenshot_20200330-74884682-cms-jpeg-image-800-637-pixels-scaled-95.png
The Blade Battery emitted neither smoke nor fire after being penetrated, and its surface temperature only reached 30 to 60°C.


The space utilization of the new blade battery is increased by over 50 percent compared to conventional lithium iron phosphate block batteries, claims BYD.
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Shenzhen-based electric carmaker BYD has officially launched a new blade-shaped battery to mitigate concerns about battery safety in electric vehicles. The company unveiled its new battery at an online event themed “The Blade Battery – Unsheathed to Safeguard the World”.

According to the company statement, Wang Chuanfu, BYD Chairman and President, said that the Blade Battery reflects BYD’s determination to resolve issues in battery safety while also redefining safety standards for the entire industry.

"In terms of battery safety and energy density, BYD’s Blade Battery has obvious advantages," said Professor Ouyang Minggao, Member of the Chinese Academy of Sciences and Professor at Tsinghua University.

Due to its optimized battery pack structure, the space utilization of the battery pack is increased by over 50 percent compared to conventional lithium iron phosphate block batteries, claims BYD.

BYD further highlighted that while undergoing nail penetration tests, the Blade Battery emitted neither smoke nor fire after being penetrated, and its surface temperature only reached 30 to 60°C.

"Under the same conditions, a ternary lithium battery exceeded 500°C and violently burned, and while a conventional lithium iron phosphate block battery did not openly emit flames or smoke, its surface temperature reached dangerous temperatures of 200 to 400°C," BYD said adding this implies that EVs equipped with the Blade Battery would be far less susceptible to catching fire – even when they are severely damaged.

Besides, BYD also stated that the Blade Battery also passed other extreme test conditions, such as being crushed, bent, being heated in a furnace to 300°C and overcharged by 260 percent. "None of these resulted in a fire or explosion," BYD pointed out.

According to He Long, Vice President of BYD and Chairman of FinDreams Battery, many vehicle brands are in discussion with the comapny about partnerships based on the technology of the Blade Battery. He added that BYD will gladly share and work with global partners to achieve mutually beneficial outcomes for all industry players.

The Han EV, BYD’s flagship sedan model slated for launch this June, will come equipped with the Blade Battery. The new model will lead the brand’s Dynasty Family, boasting a cruising range of 605 kilometers and an acceleration of 0 to 100km/h in just 3.9 seconds, said the company.
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Old 30th March 2020, 22:48   #2
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Default Re: BYD launches new blade battery with revolutionary EV safety standards

Wow things in the EV space sure are happening far faster than I (and I think many others) anticipated. At this rate of development & release to market - the ICE cars might have it tough to roll out of showrooms in modern markets in next 2 years tops.

BYD is talking about a supposedly revolutionary technology already set for release in another 2-3 months! Thats no time at all in auto sector calendars. Especially in the current total shutdown like scenario.

On the other hand, anyone can claim their technology as revolutionary as long as there is no 3rd party evaluation. I hope these EVs start getting evaluated for crash tests. Not a bad time for governments across the world to start enforcing crash tests on cars as we start moving from conventional engines to battery pack power units.
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Old 31st March 2020, 10:49   #3
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Default Re: BYD launches new blade battery with revolutionary EV safety standards

The flat blade design looks like a perfect form factor for quickly replacing/sliding out the battery at a battery station during a long drive when it runs out of power and quickly replacing it/sliding in with a fully charged battery rather than plugging to a charger and waiting for it to re-charge for hours.

Slide in/ Slide out of the battery from the car looks like a convenient approach if fully charged standardized batteries can be rented in future.

Battery and Auto manufacturers should seriously look into standardizing the form factor of batteries and their interfaces to connect the battery to the car.

There should be well defined size and shape defined for the battery industry wide with a small unit size so that for Eg: a small car would need a one unit slot in the car and a larger vehicle can have multiple battery slots for inserting multiple small units based on its power needs. That way a single battery form factor (size and interface) can cater to a wide variety of vehicles and make it a scalable/viable/feasible option for battery stations to go for a battery rental model rather than a recharge station.

Last edited by for_cars1 : 31st March 2020 at 10:59.
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Old 31st March 2020, 14:51   #4
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Default Re: BYD launches new blade battery with revolutionary EV safety standards

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Originally Posted by for_cars1 View Post
Battery and Auto manufacturers should seriously look into standardizing the form factor of batteries and their interfaces to connect the battery to the car.
The primary reason why auto makers have for decades (we should call it century now!) taken efforts to stay away from standardizing is it kills return business.

People in the know like must members & readers on this forum, would just buy a car & afterwards for any repairs / replacements, go to the nearest and cheapest supplier, rather than to an ASC. After sales repeat businesses on service, spares etc is a huge contributor to a car maker's and supplier's revenue. Take it out - and there is a big loss of business post sales.
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Old 31st March 2020, 19:27   #5
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Default Re: BYD launches new blade battery with revolutionary EV safety standards

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Originally Posted by for_cars1 View Post
The flat blade design looks like a perfect form factor for quickly replacing/sliding out the battery at a battery station during a long drive when it runs out of power and quickly replacing it/sliding in with a fully charged battery rather than plugging to a charger and waiting for it to re-charge for hours.

Slide in/ Slide out of the battery from the car looks like a convenient approach if fully charged standardized batteries can be rented in future.

Battery and Auto manufacturers should seriously look into standardizing the form factor of batteries and their interfaces to connect the battery to the car.

There should be well defined size and shape defined for the battery industry wide with a small unit size so that for Eg: a small car would need a one unit slot in the car and a larger vehicle can have multiple battery slots for inserting multiple small units based on its power needs. That way a single battery form factor (size and interface) can cater to a wide variety of vehicles and make it a scalable/viable/feasible option for battery stations to go for a battery rental model rather than a recharge station.
Agreed. I too thought that EVs should come with a main fixed floor mounted battery for general usage and 2-4 hot swappable range extender batteries for long trips that you can change for a fee at various petrol pumps on the highway. I thought of a cylindrical or square form factor with a handle and gasket that would fit in the underseat areas above the floor line.

I guess you will only see some standardized battery for factors when 1-2 companies get technology or distribution networks that are far superior than the competition. Once it gets popular it's easier for it to get adopted as a "standard"
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