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Technology Stocks : Energy Conversion Devices -- Ignore unavailable to you. Want to Upgrade?

To: fred whitridge who wrote (2449)	10/9/1998 2:30:00 PM
From: fred whitridge	Read Replies (1) \| Respond to of 8393

Energy Research has just filed an SB-2 prospectus detailing its intent to spin off 100% of its Nickel Zinc battery division, now called Evercel, Inc. and follow it up with a rights offering to get cash into the company. The spin off to shareholders is to happen by October 31 whereupon the rights offering will commence. I love prospectuses. Far more detail than 10k's and 10Q's and higher standards on truthfulness and disclosure than mere ongoing reports. Its a must read which I have only glanced at. Get it off the SEC EDGAR server or from www.freeedgar.com. Lots of interesting battery industry figures. Among other interesting points. They are still predicting $150 to $300 per kwh Diamler Benz will own 11% after the spinoff as a result of its ownership of ERC. Sales were about 1/2 million thru the 9 months. So behind GM/O but not waaaaay behind ----------------- I've long been a proponent of Ovonic selling 10% to the public for $15 to $20 million and keeping the money for development purposes. What a way to shine a light on the value of ECD via the residual ownership ECD will have. Fund up Ovonic without taxing ECD. It shall be very interesting to watch Evercel trade and ascertain what such a move would have on ECD.

To: fred whitridge who wrote (2449)	10/9/1998 4:37:00 PM
From: Retiarius	Read Replies (1) \| Respond to of 8393

slight correction for professor whitridge the 1997 stockletter figure i relayed for the HEV60 specs was 1,700 W/L power density, not the 1,400 it is now. but he more than i would know how to interpret the ovonic derating, as i barely remember the "ELI the ICE man" voltage/current/inductance/capacitance rule from high-school electronics. as an example of EVS-15 geek speak, please have fred interpret why the 2nd derivative of voltage over time is the right way to control NiMH charging, per honda abstract below. p.s. the electrosource abstract seems also revealing -- aren't these the current Pb batteries in last year's EV1 model? does the verbiage in the EVS-15 proceedings really explain why the ride-and-drive demo at my company had to be cancelled early due to "module failure"? going from 350 -> 700 cycles seems nice, yielding a better than a 20 kilomile car at least. _______ Control Technology of Ni-MH Batteries for Electric Vehicles The Ni-MH batteries applied to the "HONDA EV PLUS" have an energy capacity of 27kWh. A range of 200km by using the UDDS mode was realized with the battery capacity design. Accelerating power characteristics were established by the increase in specific power of Ni-MH batteries. Memory effect, which is a common phenomenon in nickel system batteries, is apparent in the charge and discharge process of Ni-MH batteries. This phenomenon is based on an electrochemical change of nickel hydroxide as positive electrodes. As a result, the decline of discharge voltage and the total power of Ni-MH batteries will occur. We found that a relationship between battery power : Pbatt. and motor power : Pmot. of 1.4 < Pbatt. / Pmot. < 2.5 was effective, and therefore this system concept was introduced in the "HONDA EV PLUS". The heat generation during charging process of Ni-MH batteries is a big issue. This heat generation consists of four types of elements : the reaction heat of hydrogen absorption in charging process, the polarization loss heat, the joule loss heat and the sub reaction as recombination process. Theoretically, the heat generation due to this sub reaction at the latter period of charging would reach 10 times the battery reaction heat. To control this, the suppression of the battery sub reaction and the construction of a battery cooling system are imperative. Usable parameters in charging control for Ni-MH batteries would be limited to battery temperature: T, battery voltage : V, internal pressure of battery : P, and the differential value of these parameters. Though T and V are effective, each parameter also has a limit. The effectiveness of dT/dt and dV/dt was confirmed in the case of full charging and undercharging, respectively. Further, d2V/dt2 was developed as the control algorithm to prevent overcharging of Ni-MH batteries. And also, the prominent charging system of the "HONDA EV PLUS" was developed considering several standards.