1. A battery control device comprising:
a battery system having a plurality of cells;
a first electronic unit;
a second electronic unit having a ground potential operatively connected to a potential of the battery system; and
a communication link including an electric isolation and a communication line having an electromagnetic shielding at least in sections, the communication link being configured to operatively connect and enable communication between the first electronic unit and the second electronic unit,
wherein the electromagnetic shielding is operatively connected to the ground potential of the second electronic unit.
2. The battery control device of claim 1, wherein the first electronic unit comprises a battery management unit.
3. The battery control device of claim 1, wherein the second electronic unit comprises a cell supervisory controller.
4. The battery control device of claim 1, wherein the electric isolation is arranged between the first electronic unit and the communication line.
5. The battery control device of claim 1, wherein the electric isolation comprises an optocoupler or inductive or capacitive transmission.
6. The battery control device of claim 1, wherein the electric isolation comprises an inductive transmission.
7. The battery control device of claim 1, wherein the electric isolation comprises a capacitive transmission.
8. The battery control device of claim 1, wherein the ground potential of the second electronic unit is configured to extend over the communication line into a separate area formed on a module.
9. The battery control device of claim 8, wherein the module comprises the first electronic unit and the separate area accommodates components with the ground potential of the second electronic unit.
10. The battery control device of claim 1, further comprising filter elements arranged between the communication line and the first electronic unit.
11. The battery control device of claim 1, further comprising filter elements arranged between the communication line and the second electronic unit.
12. The battery control device of claim 1, further comprising filter elements arranged between the communication line and the first electronic unit and between the communication line and the second electronic unit.
13. The battery control device of claim 12, wherein the filter elements comprise series resistors on both sides of the shielding, and discharge capacitors on both sides of the shielding.
14. The battery control device of claim 12, wherein the filter elements comprise inductors on both sides of the shielding.
15. The battery control device of claim 1, wherein an exchange of information via the communication link is carried out via a Serial Peripheral Interface bus.
16. The battery control device of claim 1, wherein the communication line has a length greater than 50 cm.
17. A battery control device comprising:
a battery system having a plurality of cells;
a first electronic unit;
a plurality of second electronic units each configured for operative communication with one another and having a ground potential operatively connected to a potential of the battery system; and
electromagnetic shielding at least in sections, a communication link being configured to operatively connect and enable communication between the first electronic unit and some of the second electronic units,
wherein the electromagnetic shielding is operatively connected to the ground potential of the second electronic unit.
18. The battery control device of claim 17, wherein a respective ground potential of each of the second electronic units is operatively connected to a different potential of the battery system.
19. A battery control device comprising:
a battery system having a plurality of cells;
a first electronic unit;
a plurality of second electronic units each configured for operative communication with one another and having a ground potential operatively connected to a potential of the battery system; and
a communication link including an electric isolation and a communication line having an electromagnetic shielding at least in sections, the communication link being configured to operatively connect and enable direct communication between the first electronic unit and at least two of the second electronic units,
wherein the electromagnetic shielding is operatively connected to the ground potential of the second electronic unit.
20. The battery control device of claim 19, wherein a respective ground potential of each of the second electronic units is operatively connected to a different potential of the battery system.
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. A PDC cutter, comprising:
a substrate; and
a diamond table mounted to the substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the diamond table further having a front face with a thermal channel where the interstitial catalyst binder has been removed and further formed to additionally include in the thermal channel a material, the material being less thermally expandable than the catalyst binder andor more thermally conductive than the catalyst binder andor having a lower heat capacity than the catalyst binder, the material being introduced to fill at least some interstitial voids left by removal of the catalyst binder in the thermal channel to a desired depth.
2. The PDC cutter of claim 1 wherein the material is cubic boron nitride or a component of cubic boron nitride.
3. The PDC cutter of claim 1 wherein the material is an elemental material selected from a group consisting of: carbon, germanium, zinc, aluminum, silicon, molybdenum, boron, phosphorous, copper, silver, and gold.
4. The PDC cutter of claim 3 wherein the material is one of a combination of two or more of the elemental materials listed in claim 3 or an alloy including one or more of the elemental materials listed in claim 3.
5. The PDC cutter of claim 1 wherein the material includes an alkali earth carbonate.
6. The PDC cutter of claim 1 wherein the material includes a sulfate.
7. The PDC cutter of claim 1 wherein the material includes a hydroxide.
8. The PDC cutter of claim 1 wherein the material is tungsten oxide.
9. The PDC cutter of claim 1 wherein the material is boron carbide.
10. The PDC cutter of claim 1 wherein the material is TiC0.6.
11. The PDC cutter of claim 1 wherein the material is one of an iron oxide or double oxide.
12. The PDC cutter of claim 1 wherein the material is an intermetallic material.
13. The PDC cutter of claim 1 wherein the material is a ceramic material.
14. The PDC cutter of claim 1 wherein the material is introduced into the diamond table thermal channel by imbibition.
15. The PDC cutter of claim 1 wherein the material is introduced into the diamond table thermal channel by hot isostatic pressing.
16. The PDC cutter of claim 1 wherein the material is introduced into the diamond table thermal channel by cryogenic methods or cold pressing or both.
17. The PDC cutter of claim 1 wherein the material is introduced into the diamond table thermal channel by ion implantation.
18. The PDC cutter of claim 1 wherein the material is introduced into the diamond table thermal channel by one of spark plasma sintering, field assisted sintering or pulsed electric current sintering.
19. The PDC cutter of claim 1 wherein the desired depth is between 0.010 mm to 1.0 mm.
20. A method, comprising:
removing from a front face of a diamond table mounted to a substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the interstitial catalyst binder to form a thermal channel; and
introducing a material to the front face of the diamond table, the introduced material backfilling the front face of the diamond table to fill interstitial voids left by removal of the catalyst binder in the thermal channel to a desired depth, the material being less thermally expandable than the catalyst binder andor more thermally conductive than the catalyst binder andor having a lower heat capacity than the catalyst binder.
21. The method of claim 20 where removing comprises leaching the interstitial catalyst binder from the front face of the diamond table.
22. The method of claim 20 wherein the material is cubic boron nitride.
23. The method of claim 20 wherein the material is an elemental material selected from a group consisting of: carbon, germanium, zinc, aluminum, silicon, molybdenum, boron, phosphorous, copper, silver, and gold.
24. The method of claim 23 wherein the material is one of a combination of two or more of the elemental materials listed in claim 23 or an alloy including one or more of the elemental materials listed in claim 23.
25. The method of claim 20 wherein the material includes an alkali earth carbonate.
26. The method of claim 20 wherein the material includes a sulfate.
27. The method of claim 20 wherein the material includes a hydroxide.
28. The method of claim 20 wherein the material is tungsten oxide.
29. The method of claim 20 wherein the material is boron carbide.
30. The method of claim 20 wherein the material is TiC0.6.
31. The method of claim 20 wherein the material is one of an iron oxide or double oxide.
32. The method of claim 20 wherein the material is an intermetallic material.
33. The method of claim 20 wherein the material is as ceramic material.
34. The method of 20 wherein introducing the material comprises performing an imbibition process.
35. The method of 20 wherein introducing the material comprises performing a hot isostatic pressing.
36. The method of claim 20 wherein introducing the material comprises performing a cryogenic process or cold pressing process, or performing both processes.
37. The method of claim 20 wherein introducing the material comprises performing an ion implantation.
38. The method of claim 20 wherein introducing the material comprises performing one of a spark plasma sintering process, field assisted sintering process or pulsed electric current sintering process.
39. The method of claim 20 wherein the desired depth is between 0.010 mm to 1.0 mm.