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Untertitel

TITELBAE Batterien GmbH

Reliable Solar Off-Grid Solutions

23.06.2016 Dr. Julia Nehmann

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Why thinking about Solar Off-Grid?

Megatrends in the global energy transition

1. The beginning of the end of the fossil era is here.

2. Renewables are being built faster than coal, gas, and nuclear together.

3. The cost of renewable energy is falling.

4. The energy future consists of a large number of distributed generators,

not a small number of central-station plants.

5. The energy future is digital.

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Reliable Solar Off-Grid Solutions

Concept with hybrid power island system

DC/AC converter

DC-Grid

PV-Generator

Battery

AC-Grid

DC-Consumer

Charge controller

AC-Consumer

Genset AC/DC converter

Wind generator

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Reliable Solar Off-Grid Solutions

Concept with hybrid power island system

Industrial Residential

Telecom

Off-Grid Solutions

Product range

Railway Signalling

Broadcast

Schools

Hospitals

Community facilities

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BAE OFF-GRID application worldwide

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Requirements for a solar storage system

• General for solar battery type

• High charge/discharge efficiency

• Minimum self discharge

• Maintenance-free types or low

maintenance types

• Resistance against deep

discharge

• Reduced space in horizontal

installation

Battery with fixed electrolyte

• High cycle life in partial state of

charge (PSOC)

• Reasonable price

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Requirements for a solar storage system

• General for solar battery type

• High charge/discharge efficiency

• Minimum self discharge

• Maintenance-free types or low

maintenance types

• Resistance against deep

discharge

• Reduced space in horizontal

installation

Battery with fixed electrolyte

• High cycle life in partial state of

charge (PSOC)

• Reasonable price

• Criteria for battery system

• Site of installation, intensity of

solar irradiation, maintenance and

transport (weight!)

• Ambient temperature, self

discharge, corrosion, capacity

• Energy consumption per day

• Cycle life, cycle stability

• Battery type

• Total costs of system

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Untertitel

TITEL

BAE Products

for Solar Applications

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Requirements to a solar storage system

Positive Plate

TypeElectrolyte

Tubular Plate

(positive)

Grid Plate

(positive)

Valve Regulated

Lead Acid

VRLA (Sealed)

Vented Lead

Acid

VLA (Vented)

BAE products for stationary applications

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PVS Cell

PVV Cell

PVS Block

PVV Block

Vented (Tubular Plate)

BAE SECURA PVS SOLAR Cell:

140 to 4940 Ah (C100)

BAE SECURA PVS SOLAR Block:

70 to 420 Ah (C100)

Sealed (Tubular Plate)

BAE SECURA PVV SOLAR Cell:

140 to 4940 Ah (C100)

BAE SECURA PVV SOLAR Block:

70 to 1260 Ah (C100)

BAE Solar batteries (VLA & VRLA)

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Exemplarily: BAE SECURA PVV block

Capacity range: 70 to 1260 Ah (C100)

DIN standard: DIN 40744

Float voltage: 2.25 V±1%

Cycles acc. to IEC 60896-21: > 1500

Cycles acc. to IEC 61427: 2100 (@ 40 °C)

Acid density: 1.24 kg/l

Electrolyte fixed in: GEL by fumed Silica

Valve opening pressure: 120 mbar

Plate type: tubular/flat

Alloy positive grid: PbCaSn

Pole bushing: 100% tight

Container/lid: high impact SAN, UL-rating 94 HB; V-0 on

request

Connectors: bolted flexible or solid insulated copper

connectors

Orientation: vertical, horizontal on request

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Phase A:

Cycle Test

49 x

or

Ue < 1.5

100 x

Scheme of

phases A and B

DO

D in

%

Number of cycles

Cycle test program at 40 °C acc. to IEC 61427

Complete Charge

Discharge 9 hrs with I10 or until 1.75 V/cell

Charge 3 hrs with 1.03 I10

Discharge 3 hrs with I10

Discharge 2 hrs with 1.25 I10

Charge 6 hrs with I10 to 2.40 V/cellPhase B:

Result: Cycle life as number of A+B - cyclesCapacity test

C10 at Tref

finished when

C10 < 80%

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BAE Solar Cycle Test

Voltage response of the PVV test cells between 2251th and 2,400th cycles

Results:

Cycles acc. to IEC 61427 at 40 °C

PVS block 2700 PVS cell 3150

PVV block 2100 PVV cell > 3000

100 B cycles

Complete

charge

49 A cycles

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Untertitel

TITEL

BAE Solar references

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Application of BAE solar products

Off-grid hybrid installation (Wind/Solar)

Application: Telecom SBS

Electrolyte: GEL

Number of cells: 24

Battery type: 16 PVV 3040

Industrial

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Application of BAE solar products

Solar System for Mobile Network Station Saudi Arabia

Industrial

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Gas & Oil station in the Sahara

Application of BAE solar products

Industrial

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Off-grid solar photovoltaic systems

on Pacific Islands

• Fiji Education Sector Program

• 113 kW off-grid Solar systems

• VLA batteries: robust and good cycle

stability

• Installed at 34 schools

Application of BAE solar products

Residential

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Solar photovoltaic system

operated in Sierra Leone

Application of BAE solar products

Residential

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Untertitel

TITEL

BAE Batterien GmbH

Distribution only by express authority of BAE Batterien GmbH21

Founded 1899 in Berlin

Business High quality lead acid batteries

Application Stationary, Solar, Traction and Railway

systems

Status Small and medium-sized company

(SME)

Standard ”Quality made in Germany”

Production 100% in Berlin

Employees 175

Export share 75%

BAE Batterien GmbH – short introduction

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BAE Batterien GmbH

Thank you for your attention… and visit us in hall B1 at our booth 334!