1. A heat sink including:
a heat-conducting base;
a heat-dissipating fin set comprising a plurality of heat-dissipating thin fin plates arranged radially at intervals for enclosing the heat-conducting base, a central hole and an accommodating space being formed inside the heat-dissipating fin set, the heat-conducting base being received in the central hole with its peripheral brought into thermal contact with first inner portions of the heat-dissipating thin fin plates, at least one annular groove in communication with the accommodating space being formed on second inner portions of the heat-dissipating thin fin plates; and
at least one wound heat pipe comprising an evaporating section at one distal end brought into thermal contact with the heat-conducting base, and a condensing section at the other distal end received in the annular groove and brought into thermal contact with the heat-dissipating thin fin plates.
2. The heat sink according to claim 1, wherein an outer edge of each of the heat-dissipating thin fin plates is formed with a plurality of embossments to increase heat-dissipating areas and protecting a user from getting hurt by sharp edges of the heat-dissipating thin fin plates.
3. The heat sink according to claim 1, wherein the heat-conducting base is provided with an insertion slot in communication with the accommodating space for allowing the evaporating section to be received therein.
4. The heat sink according to claim 1, wherein there are two annular grooves formed on the second inner portions of the heat-dissipating thin fin plates, and there are two wound heat pipes in same winding direction respectively received in the two annular grooves and brought into thermal contact with the heat-dissipating thin fin plates.
5. The heat sink according to claim 1, wherein there are two annular grooves formed on the second inner portions of the heat-dissipating thin fin plates, and there are two wound heat pipes in different winding direction respectively received in the two annular grooves and brought into thermal contact with the heat-dissipating thin fin plates.
6. The heat sink according to claim 1, further including a heat-conducting medium applied between the evaporating section and the heat-conducting base as well as the condensing section and the heat-dissipating thin fin plates.
7. The heat sink according to claim 3, wherein the evaporating section is in flush with the heat-conducting base.
8. A LED lamp, including:
a heat sink, comprising:
a heat-conducting base;
a heat-dissipating fin set comprising a plurality of heat-dissipating thin fin plates arranged radially at intervals for enclosing the heat-conducting base, a central hole and an accommodating space being formed inside the heat-dissipating fin set, the heat-conducting base being received in the central hole with its peripheral brought into thermal contact with first inner portions of the heat-dissipating thin fin plates, at least one being formed on second inner portions of the heat-dissipating thin fin plates; and
at least one wound heat pipe comprising an evaporating section at one distal end brought into thermal contact with the heat-conducting base, and a condensing section at the other distal end received in the annular groove and brought into thermal contact with the heat-dissipating thin fin plates;
a LED module disposed in the accommodating space to abut against one side of the heat-conducting base and the evaporating section; and
a lamp base provided on the other side of the heat-conducting base and electrically connected to the LED module.
9. The LED lamp according to claim 8, wherein the heat-dissipating base is provided with a connecting trough for allowing the lamp base to be engaged therein.
10. The LED lamp according to claim 8, wherein the heat-conducting base is provided with an insertion slot in communication with the accommodating space for allowing the evaporating section to be received therein.
11. The LED lamp according to claim 8, wherein an outer surface of each of the heat-dissipating thin fin plates is provided with a plurality of embossments to increase heat-dissipating areas and protecting a user from getting hurt by sharp edges of the heat-dissipating thin fin plates.
12. The LED lamp according to claim 8, wherein there are two annular grooves formed on the second inner portions of the heat-dissipating thin fin plates, and there are two wound heat pipes in same winding direction respectively received in the two annular grooves and brought into thermal contact with the heat-dissipating thin fin plates.
13. The LED lamp according to claim 8, wherein there are two annular grooves formed on the second inner portions of the heat-dissipating thin fin plates, and there are two wound heat pipes in different winding direction respectively received in the two annular grooves and brought into thermal contact with the heat-dissipating thin fin plates.
14. The LED lamp according to claim 8, wherein the LED module comprises a circuit board abutting against one surface of the heat-conducting base and the evaporating section, and a plurality of LEDs electrically connected to the circuit board.
15. The LED lamp according to claim 8, further including a lens disposed in the accommodating space to cover the LED module.
16. The LED lamp according to claim 8, further including a reflecting shroud disposed in the accommodating space and surrounded by the wound heat pipe.
17. The LED lamp according to claim 8, further including a heat-conducting medium applied between the evaporating section and the heat-conducting base as well as the condensing section and the heat-dissipating thin fin plates.
18. The LED lamp according to claim 10, wherein the evaporating section is in flush with the heat-conducting base.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A method for determining whether a battery load test was properly carried out for a battery, the method comprising:
determining whether a load was properly applied to the battery during the load test; and
determining whether the battery was properly charged during the load test.
2. The method of claim 1, wherein determining whether the load was properly applied during the load test comprises:
measuring a start voltage of a battery;
applying a load to the battery during a load test period;
measuring a voltage drop once the load is applied to the battery;
removing the load from the battery; and
determining whether the voltage drop is greater than a predetermined value.
3. The method of claim 2, further comprising determining that the load was properly applied during the load test if the voltage drop is greater than a value in the range of about 0 to 5.0 volts.
4. The method of claim 3, further comprising determining that the load was properly applied during the load test if the voltage drop is greater than about 0.5 volts.
5. The method of claim 2, further comprising determining that the load was not properly applied during the load test if the voltage drop is not greater than about 0.5 volts.
6. The method of claim 2, wherein the start voltage comprises the voltage of the battery immediately before the load is applied.
7. The method of claim 6, wherein measuring the voltage drop comprises finding the difference between the start voltage and the voltage of the battery just after the load is applied.
8. The method of claim 1, wherein determining that the battery was properly charged during the load test comprises:
charging the battery with a charging current;
determining that the charging current is less than a first predetermined current value; and
determining that the voltage of the battery does not decrease by more than a first predetermined voltage value in a first predetermined time frame.
9. The method of claim 8, wherein the first predetermined current value is less than about 50 amps, the first predetermined voltage value is less than about 5 volts, and the first predetermined time frame is less than about 5 minutes.
10. The method of claim 9, wherein the first predetermined current value is about 1.0 amp, the first predetermined voltage value is about 0.5 amps, and the first predetermined time frame is about 1.0 minute.
11. The method of claim 1, wherein determining that the battery was properly charged during the load test comprises:
charging the battery with a charging current;
determining that the charging current drops by more than a second predetermined current value;
determining that the voltage of the battery is greater than a second predetermined voltage value.
12. The method of claim 11, wherein the second predetermined current value is less than about 5 amps and the second predetermined voltage value is in the range of about 12 to 16 volts.
13. The method of claim 12, wherein the second predetermined current value is about 1.0 amp and the second predetermined voltage value is about 14.5 volts.
14. The method of claim 1, wherein determining that the battery was properly charged during the load test comprises:
charging the battery with a charging current;
determining that the charging current is applied to the battery;
determining that the voltage of the battery increases by more than a third predetermined current value.
15. The method of claim 14, wherein the third predetermined voltage value is in the range of about 0 to 5.0 volts.
16. The method of claim 15, wherein the third predetermined voltage value is about 0.5 volts.
17. An apparatus for analyzing a battery load test, comprising:
a tester for conducting a series of tests on a battery;
a charger for providing a charging current to the battery; and
a control system having a routine for determining whether a load was properly applied to a battery during the load test and whether the battery was properly charged during the load test.
18. The apparatus of claim 17, wherein the tester conducts one or more tests on the battery by applying a load to the battery.
19. The apparatus of claim 18, wherein the one or more tests may include a conductance test, a heavy load test, a light load test, a conductance and load comparison test, and a charge acceptance test.
20. The apparatus of claim 19, wherein the charger provides a complete charging current when the battery passes one or more of the tests.
21. The apparatus of claim 19, wherein the charger does not provide a complete charging current when the battery fails one or more of the tests.
22. The apparatus of claim 19, wherein the control system is adapted to find the battery load test invalid where the battery fails one or more of the tests.
23. The apparatus of claim 17, wherein the routine of the control system comprises:
measuring a start voltage of a battery;
controlling the application of a load to the battery;
monitoring the voltage drop once the load is applied to the battery;
controlling the removal of the load from the battery;
monitoring the recovery voltage of the battery by a sensor of the control system after the load is removed; and
determining whether the voltage drop is greater than a predetermined value.
24. The apparatus of claim 23, wherein the control system provides output relating to the battery and the tests performed on the battery.
25. The apparatus of claim 23, wherein the routine further comprises determining that the load was properly applied during the load test if the voltage drop is greater than a value in the range of about 0 to 5.0 volts.
26. The apparatus of claim 23, wherein the routine further comprises determining that the load was properly applied during the load test if the voltage drop is greater than about 0.5 volts.
27. The apparatus of claim 17, wherein the routine of the control system determines that the battery was properly charged when the charging current is less than a first predetermined current value and the voltage of the battery does not decrease by more than a first predetermined voltage value in a first predetermined time frame.
28. The apparatus of claim 17, wherein the routine of the control system determines that the battery was properly charged when the charging current drops by more than a second predetermined current value and the voltage of the battery is greater than a second predetermined voltage value.
29. The apparatus of claim 17, wherein the routine of the control system determines that the battery was properly charged when the charging current is applied to the battery and the voltage of the battery increases by more than a third predetermined current value.