Home » CTP, CTC and CTB Built-in Battery Trade Overview

CTP, CTC and CTB Built-in Battery Trade Overview

Built-in battery analysis: three developments of CTP, CTC and CTB

Primary idea of CTP, CTC and CTB

The standard integration methodology of recent vitality car energy system is CTM, that’s, “Cell to Module”, which represents the mode of integrating battery cells on modules. The module is a growth path for various fashions with completely different battery necessities and completely different battery cell sizes of battery producers, which helps the formation of scaled economies and unified merchandise. The final configuration is: battery cell – module – PACK – put in in automobiles; however such methodology solely takes house utilization of 40%, largely limiting the house for different elements. The event of battery integration (CTP, CTC, CTB) is progressively turning into the important thing analysis and utility route of the {industry}.

CTP is “Cell to Pack”, which skips the standardized module and immediately integrates battery cells into battery pack, which successfully improves house utilization and vitality density of battery pack. This integration methodology was firstly proposed by CATL in 2019. Since then, BYD and SVOLT Vitality have successively launched their very own CTP options. Amongst them, the extra consultant is BYD’s “Blade” battery, which arranges particular person battery cells collectively in an array, after which inserts them into the battery pack like a “blade”, which is why everybody calls it a “blade battery”.

CTB (Cell to Physique) is a brand new manner of battery cell integration proposed by BYD to appreciate the transformation from physique integration to battery-body integration, which helps to enhance house utilization and additional efficiency launch of electrical automobiles.

From the attitude of structural design, BYD’s CTB know-how combines physique flooring panel and the higher shell of battery pack into one, which is built-in into flat sealing floor fashioned by higher cowl of battery, threshold and entrance and rear beams. The passenger cockpit is sealed with sealant, and the underside is assembled with physique by means of mounting level. That’s, when designing and manufacturing battery pack, the battery system is built-in with physique as a complete, sealing and waterproof necessities of the battery itself might be met, and sealing of battery and passenger cockpit is comparatively easy, so the chance is controllable.

CTB know-how is an extension of CTP know-how, BYD’s first CTB is extra simplified and direct in construction, lowering the house loss attributable to connection between physique and battery cowl, which is predicted to additional enhance the general house utilization. Underneath this construction, the battery will not be solely vitality physique, but in addition structural physique to take part in power transmission and stress of the entire car, which might scale back the intrusion of the aspect pillar by 45%.

CTC (Cell to Chassis) is the method of integrating the battery cells immediately into the car chassis. It additional deepens the combination of battery system with EV energy system and chassis, reduces the variety of elements, saves house, improves structural effectivity, considerably reduces car weight and will increase battery vary. The long run stage of CTC will allow the matching effectivity to achieve greater than 90%, house utilization to achieve greater than 70%, and the variety of elements shall be additional decreased to about 400.

In September 2020, Tesla unveiled CTC know-how at Battery Day. The battery cells or modules are put in within the physique, connecting the entrance and rear physique castings, and changing cockpit flooring with a battery higher cowl. The know-how is for use in 2022 Mannequin Y. Tesla predicts a 55% discount in funding per GWH and a 35% discount in house occupied with CTC know-how.

CTC will not be a easy extension of CTP, CTP doesn’t break by means of PACK itself. Battery firms/skilled PACK firms can full growth independently, however the know-how doesn’t lengthen downstream. The looks of CTC will break limitation of PACK and immediately contain the car chassis, which is essentially the most important core part of the car, and is the core benefit amassed by OEMs by means of long-term growth, which is tough for battery firms/skilled PACK firms to develop independently. Subsequently, when it comes to enterprise mannequin and cooperation mode, CTC and CTP have nice variations.

The present CTC know-how remains to be within the early stage of growth. Sooner or later, CTC know-how shall be deeply mixed with skateboard chassis. Along with the combination of battery system and chassis, electrical drives, digital controls, wire-controlled actuation elements, and energy area controllers will all be extremely built-in with chassis to additional optimize energy distribution, scale back vitality consumption, enhance manufacturing effectivity, scale back manufacturing prices and product growth cycles, and many others.

In 2022, the passenger automotive battery integration reveals following developments.

Development 1: Giant-scale set up of CTP, CTC, CTB applied sciences in 2022

In 2022, CTP, CTC and CTB applied sciences obtain scale set up. Customers of CATL CTP embrace Tesla Mannequin 3/Y, Xpeng P7/G3, NIO ES6/ET7, Roewe RES33, Neta and plenty of different fashions; Leap Motor launched CTC battery-chassis integration and BYD launched CTB for Seal collection.

With integration of recent vitality automobiles and the assistance of wire-controlled know-how, the sample of provide chain has been additional reshaped. From the attitude of OEMs, the usual module know-how advocated by VDA is the first-generation know-how, CTP is the second era, and varied CTC, CTB, and many others. are the third era. From CTP to CTC/CTB, the dominance of OEMs is additional enhanced.

The yr 2022 is the primary yr of mass manufacturing of CTC know-how, Tesla Mannequin Y and Leap Motor C01 are the primary to realize mass manufacturing within the {industry} with their respective CTC know-how.

CTC Expertise

Development 2: New vitality car battery pack and chassis {industry} chain switch to the battery manufacturing unit

At current, battery firms have the voice over the new vitality car {industry} chain, which additionally signifies that the core worth of OEMs has been weakened and the revenue house has been tremendously decreased. Highly effective battery producers take the chance to increase their capabilities to the sector of chassis growth.

CTP, CTC and CTM

CATL will formally launch its extremely built-in CTC (Cell to Chassis) battery know-how round 2025. Cai Jianyong, former normal supervisor of clever car management in Huawei Clever Car Options BU, joined CATL and was accountable for CTC battery-chassis integration enterprise.

In keeping with CATL, the corporate will obtain built-in CTC by 2025 and clever CTC by 2030, during which the built-in CTC know-how won’t solely rearrange batteries, but in addition embrace energy elements corresponding to motors, digital controls, DC/DC and OBCs. Clever CTC know-how will additional optimize energy distribution and scale back vitality consumption by means of clever energy area controllers.

Development 3: Integration

The distinction between modulization and integration lies in the way in which of vitality replenishment: energy alternate for modular CTP; quick charging for CTC/CTB. The extra built-in CTC/CTB battery shall be mainstream, and the built-in CTC/CTB route usually has increased necessities for thermal administration, and the significance of warmth pump air-con is highlighted. Essentially the most technically aggressive BYD Seal has confirmed that will probably be outfitted with warmth pump air-con thermal administration system, and it’s anticipated that warmth pump air-con will change into customary configuration in CTC/CTB fashions sooner or later.

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