1. A rechargeable battery module comprising:
a plurality of unit battery cells; and
a bus bar for interconnecting electrode terminals of the unit battery cells, wherein the electrode terminals and the bus bar are configured to face and make surface contact with each other at opposite sides in multiple directions.
2. The rechargeable battery module of claim 1, wherein an electrode terminal of the electrode terminals comprises:
a bolt terminal electrically coupled to an electrode assembly of a unit battery cell of the unit battery cells; and
a plate terminal fastened to the bolt terminal outside of a terminal hole in a cap plate of the unit battery cell,
wherein the plate terminal and the bus bar are configured to face and make surface contact with each other in multiple directions when the bus bar is disposed on the plate terminal and a nut is fastened to the bolt terminal.
3. The rechargeable battery module of claim 1, wherein an electrode terminal of the electrode terminals comprises a plate terminal located outside of a terminal hole in a cap plate of a unit battery cell of the unit battery cells, and
wherein the plate terminal and the bus bar are configured to face and make surface contact with each other along multiple directions when the bus bar is fastened to a top surface of the plate terminal.
4. The rechargeable battery module of claim 3, wherein the bus bar has a first concave groove and a first protruding portion extending toward the plate terminal, and
wherein the plate terminal has a second concave groove and a second protruding portion that are directed toward the first protruding portion and the first concave groove to be respectively coupled thereto.
5. The rechargeable battery module of claim 4, wherein the first protruding portion has a pitch and has a first inclined surface having a first inclination angle with respect to a plane of the bus bar, and the second protruding portion has a second inclined surface having a second inclination angle with respect to a plane of the plate terminal to make surface contact with the first inclined surface.
6. The rechargeable battery module of claim 5, wherein the first inclination angle is less than or equal to the second inclination angle.
7. The rechargeable battery module of claim 6, wherein a bottom of the first concave groove and an end portion of the second protruding portion are configured to make surface contact with each other in opposite directions.
8. The rechargeable battery module of claim 5, wherein the first protruding portion is symmetrically formed with the first inclined surfaces at opposite lateral sides of the first concave groove, and the second protruding portion is symmetrically formed with the second inclined surfaces at opposite lateral sides of the second concave groove.
9. The rechargeable battery module of claim 5, wherein at least one of the first inclined surface of the first protruding portion and the second inclined surface of the second protruding portion has a convexly curved cross section.
10. The rechargeable battery module of claim 9, wherein the second protruding portion has a symmetric cross-section with the second inclined surfaces at opposite lateral sides of the second concave groove, and
wherein the first protruding portion has a symmetric and convexly curved cross section with the first inclined surfaces at opposite lateral sides of the first concave groove.
11. The rechargeable battery module of claim 10, wherein the bus bar is formed of a material having the same or less hardness than that of the plate terminal.
12. The rechargeable battery module of claim 4, wherein the first protruding portion and the first concave groove interconnect the electrode terminal of the unit battery cell to another electrode terminal of another unit battery cell of the unit battery cells.
13. The rechargeable battery module of claim 12, wherein the bus bar has a plurality of cooling fins that extend from a surface of the bus bar opposite to the surface on which the first protruding portion and the first concave groove are disposed, the cooling fins extending along an extending direction of the first protruding portion, and
wherein the cooling fins are spaced apart from each other in a direction that crosses the extending direction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1.-46. (Canceled)
47. A device for programming oscillators, comprising:
an interface to receive an oscillator;
a power connection to supply power to the oscillator;
a device to determine accuracy of a frequency output from the oscillator;
a comparator to determine whether the accuracy is within a predefined range; and
an adjustment device to instruct that a characteristic of the oscillator be adjusted in accordance with the determination of the comparator.
48. The device of claim 47, wherein the device is capable of being operated by a single human operator.
49. The device of claim 47, wherein the device is controlled by a program in a PC compatible computer.
50. The device of claim 47, wherein the device to determine accuracy measures the accuracy of a powered-up oscillator.
51. The device of claim 47, wherein the adjustment device uses a prediction of the effect of an alteration of the characteristic.
52. The device of claim 47, wherein the adjustment device uses an iterative routine to determine the effect of an alteration of the characteristic.
53. The device of claim 47, wherein adjustment device instructs that a capacitance value for coupling with a crystal be altered.
54. The device of claim 47, wherein the predetermined range is within 100 ppm.
55. The device of claim 47, wherein each programmable oscillator further includes a programmable load circuit for adjusting a reference frequency, and wherein the adjustment device causes the load circuit to be programmed.
56. The device of claim 55, wherein the programming of the load circuit includes selectively blowing at least one fuse.
57. The device of claim 55, further comprising a testing device to evaluate one or more characteristics of the clock signal frequency outputted by the oscillator, the characteristics including at least one of signal waveform, pulse duty cycle, current, and voltage.
58. A method for programming an oscillator, comprising:
removing a set of oscillators from a stock of oscillators to program an output frequency of at least one oscillator of the set within an acceptable range;
placing the at least one oscillator onto a device for configuring the at least one oscillator;
computing frequency divider parameters effective to program the at least one oscillator to generate an output frequency within the acceptable range;
entering the computed frequency divider parameters into a program memory in the at least one oscillator;
testing an output frequency generated by the at least one oscillator to verify that the tested output frequency falls within the acceptable range; and
determining a parameter for a load circuit of the at least one oscillator effective to adjust a reference frequency of the at least one oscillator in a manner to pull the output frequency to within the acceptable range.
59. The method of claim 58, further comprising entering the determined parameter into the at least one oscillator to program the load circuit.
60. The method of claim 58, further comprising marking the at least one oscillator with identifying indicia.
61. The method of claim 58, further comprising entering customer data into the at least one oscillator after placing the at least one oscillator.