Charger for car battery
Car battery "not tolerate" a long stay without work. Deep
self-discharge is harmful for him. If the car is put on long-term
parking, there is a problem: what to do with the battery. Proposed a
fairly simple device can serve both to recharge the batteries, and
for their long-term storage in working condition.
Ris.1.Zaryadnoe device for car battery. Scheme
Since the secondary winding of the transformer T1, a current which is
limited in series with the primary winding of the ballast capacitor (C1
or C1 + C2), with the secondary winding of the transformer T1, a current
which is limited in series with the primary winding of the ballast
capacitor (C1 or C1 + C2)
Since the secondary winding of the transformer T1, the voltage applied
to the diode-thyristor bridge, the load which is battery (GB1). As the
regulatory element used car voltage regulator generator (GNR) of 14 in
any type, designed for generators with ground brush.
Were tested regulator type 121.3702 and integral-JA112A. When using the
"integralki" findings "B" and "B" are connected together and with "+"
GB1. Output "Z" is connected to the chain of controlling electrodes
thyristors. Thus, the battery voltage of 14V is maintained at a charging
current determined by the capacity of the capacitor C2, which is
tentatively calculated by the formula:
where Iz - charging current (A), U2 - the voltage of
the secondary winding with "normal" inclusion of the transformer
(B), U1 - voltage.
Transformer - anyone with the capacity of 150 ... 250 VA, voltage on
secondary winding 20 ... 36 V. The diodes of the bridge - all rated
at not less than 10 A. Thyristors - KU202, D, etc.
S1 serves to switch between charging and storage. Charge current is
chosen equal to 0.1 from the numerical value of battery capacity,
and the current storage - 1 ... 1.5A.
If there is a possibility, periodically, about once every two weeks,
it is desirable to produce the battery discharge current 2Iz to
control the temperature of the electrolyte.
Settings device requires virtually no. You may need to clarify the
capacitance by controlling the current ammeter. It is necessary to
short-circuit the conclusions of 15 and 67 (B, C and W).