„The Power of the Fuze · „The Power of the Fuze“ 60th Annual Fuze Conference May 11th, 2017 Harald Wich Diehl & Eagle Picher GmbH

„The Power of the Fuze“

60th Annual Fuze Conference

May 11th, 2017

Harald Wich

Diehl & Eagle Picher GmbH

Copyright Diehl & Eagle Picher GmbH2 Copyright Diehl & Eagle Picher GmbH

Overview

History, the large Calibre Fuzes

Requirements

Challenges

Miniaturised Fuze Batteries

New Test Equipment

Conclusions

D&EP\Presentations\Fuze\NDIA 60 Fuze Conf\60th Annual Fuze Conference_The Power of the Fuze, May 2017


Legacy Fuze Batteries

PS115 (lead)

MOFA post launch

DEP 1400x series

Requirements

Power 1 – 5 W

Energy 200 – 500 J

Life time < 200 s

Rise time > 100 ms



The “Onset”

In our 2011 presentation …


we have analysed the requirements …

… and proposed a small Fuze battery


The Start

Naively we thought …

substitute a 5 – 10 mJ set-back-generator

with a 100 mJ fuze battery

¼ the size of the generator

is not a big issue

we used to build Artillery/Mortar-Fuze Batteries

with 10,000 times more Capacity

just reduce the diameter by a factor of 3

and

the height by factor of 2.5



Customers Challenge

Our 2014 presentation …


supplemented by DoD 2014.1 SBIR

rise time < 10/100 ms

current > 2/40 mA

voltage > 2.9 V

our customer survey


Bottom Line

Requirement “Challenges/Highlights” *

Voltage as high as possible

Energy hundred´s of mJ

Power most of the Energy within ms

some W´s

Current hundred´s of mA

Rise time almost instantaneously

tr = close to zero

Life time up to 60 s

Environment spinning and none spinning


* fortunately not all cumulative


Our first small Battery

High Acceleration (no/low spin)

DEP 14103at -46°C


E > 10 J


The next small Battery

DEP14202.01

DEP14202.z; -46°C, spin


reflecting new customer requirements


Early Voltage/Power Capability

0

1

2

3

4

5

6

7

0 0.02 0.04 0.06 0.08 0.1

DEP14020.03; 2s; -46C,

Spannung [V] 8R3

Spannung[V] 12R1#1

Spannung[V] 12R2#2

Spannung[V] 20R1

Spannung[V] 55R1

Load-Test


0.000.050.100.150.200.250.300.350.400.450.50

0.0

00

0.0

03

0.0

06

0.0

09

0.0

12

0.0

15

0.0

18

0.0

21

0.0

24

0.0

27

0.0

30

0.0

33

0.0

36

0.0

39

0.0

42

0.0

45

0.0

48

0.0

51

0.0

54

0.0

57

0.0

60

0.0

63

0.0

66

0.0

69

0.0

72

0.0

75

0.0

78

0.0

81

0.0

84

0.0

87

0.0

90

0.0

93

0.0

96

0.0

99

time [s]

0.45-0.50

0.40-0.45

0.35-0.40

0.30-0.35

0.25-0.30

0.20-0.25

0.15-0.20

0.10-0.15

0.05-0.10

0.00-0.05

0.0000.0050.0100.0150.0200.0250.0300.0350.0400.0450.050

0.0

00

0.0

03

0.0

06

0.0

09

0.0

12

0.0

15

0.0

18

0.0

21

0.0

24

0.0

27

0.0

30

0.0

33

0.0

36

0.0

39

0.0

42

0.0

45

0.0

48

0.0

51

0.0

54

0.0

57

0.0

60

0.0

63

0.0

66

0.0

69

0.0

72

0.0

75

0.0

78

0.0

81

0.0

84

0.0

87

0.0

90

0.0

93

0.0

96

0.0

99

time [s]

0.045-0.050

0.040-0.045

0.035-0.040

0.030-0.035

0.025-0.030

0.020-0.025

0.015-0.020

0.010-0.015

0.005-0.010

0.000-0.005

2s Battery

P 500 mW/cm2 @ 100 ms

E 40 mJ/cm2 until 100 ms

Power = f(t)

Energy = f(t)


Load Management

Load Profile

0

5

10

15

20

25

30

35

40

0 50 100 150 200 250 300

cu

rren

t[m

A]

time [ms]

avoid (delay) high current until battery

is sufficiently activated(electrolyte has reached the place where it is supposed to be)

high capacitive load can be even worse

(remember: empty capacitor is a “short circuit”)



New Lab-Test-Equipment


compressed airelectric valve

„projectile“ w battery

wiper contact

slip ring

compression structure


New Lab-Test-Equipment

External Load Panel (e.g. Maccor)

or Customer Breadboard

Synchronised Load and

Data Recording

Spin Rate up to 18,000 rpm

Test-Time up to 500 s(actually unlimited)



First Results

DEP14202.02= none spinning mod of DEP14202.01



Conclusion

Lithium Reserve Batteries provide very short Activation Time

under high forces

Acceleration

Spin

if properly designed

under proper load management



Conclusion

Lithium Reserve Batteries provide very short Activation Time

under high forces

Acceleration

Spin

if properly designed

under proper load management

D&EP\Presentations\Fuze\NDIA 60 Fuze Conf\59th Annual Fuze Conference_In Barrel Power Supply, May 2016

Lithium Reserve Batteries are able to provide “In-Barrel” Power!


Thank you for your attention!

Questions?


… and don´t forget talk to us about your requirements!


Diehl & Eagle Picher Contact

How to Contact us

• Presenter Harald Wich

• Mail Diehl & Eagle Picher GmbH

Fischbachstrasse 20

90552 Roethenbach a d Pegnitz

Germany

• Phone +49-911-957-2100

• Fax +49-911-957-2485

• Email [email protected]

• Web www.battery.de


Documents

„The Power of the Fuze · „The Power of the Fuze“ 60th Annual Fuze Conference May 11th, 2017 Harald Wich Diehl & Eagle Picher GmbH