Electric batteries
The present invention relates to an arrangement 10 comprising plural electric battery cell modules. Each of the electric battery cell modules comprises at least one electric battery cell 12 and a module antenna 14 . The arrangement further comprises a transmission line 16 operative as an antenna. The arrangement 10 is configured to provide near field electromagnetic coupling of data between the transmission line 16 and each of the plural battery cell modules by way of the module antenna 14.
1. An arrangement comprising:
a transmission line having an elongated shape and operative as an antenna; and
a plurality of electric battery cell modules positioned along a length of the transmission line, each electric battery cell module comprising at least one electric battery cell and a module antenna separated from the transmission line by a separation;
wherein the separation is selected to provide an electromagnetic coupling strength between the transmission line and each module antenna sufficient to enable near-field radio wave data communication between the transmission line and each electric battery cell module, wherein the provided electromagnetic coupling strength is below an electromagnetic coupling strength threshold determined for the plurality of electric battery cell modules positioned along the transmission line, the electromagnetic coupling strength threshold corresponding to a determined as an electromagnetic coupling strength causing that causes the near-field radio wave data communication between the transmission line and at least one of the plurality of electric battery cell modules being positioned along the transmission line to be compromised.
2. The arrangement of claim 1 ,
wherein each electric battery cell module further comprises a module transceiver electrically coupled to the module antenna, the arrangement further comprising a primary transceiver at one end of the transmission line; and
wherein the provided electromagnetic coupling strength is greater than a minimum electromagnetic coupling strength determined by at least one of:
subtracting a sensitivity of the primary transceiver from a transmission power of the module transceivers, or
subtracting the sensitivity of the module transceivers from the transmission power of the primary transceiver.
3. The arrangement of claim 1 , wherein the provided electromagnetic coupling strength is at least −85 dB.
4. The arrangement of claim 1 , wherein the separation between the transmission line and each module antenna is less than one wavelength of electromagnetic radiation coupling data between the transmission line and the module antenna.
5. The arrangement of claim 1 , wherein changing the separation between the transmission line and a module antenna in the arrangement changes the electromagnetic coupling strength between the transmission line and the module antenna.
6. The arrangement of claim 1 , wherein the separation between the transmission line and each module antenna is filled with a dielectric material.
7. The arrangement of claim 6 , wherein the dielectric material is a plastic material or gaseous.
8. The arrangement of claim 1 , further comprising:
a primary transceiver at one end of the transmission line,
wherein the electromagnetic coupling strength causing compromised near-field radio wave data communication is determined such that a reflection coefficient pin seen at the primary transceiver is below 0.2.
9. The arrangement of claim 1 , wherein the electromagnetic coupling strength between each module antenna and the transmission line is decreasing substantially linearly with a number of the module antennas being increased.
10. The arrangement of claim 1 , further comprising:
an end termination on the transmission line providing a Voltage Standing Wave Ratio (VSWR) for the transmission line of no more than 1.5.
11. The arrangement of claim 1 , in which each electric battery cell comprises a lithium-ion ion polymer electrochemical arrangement.
12. The arrangement of claim 1 , in which at least one of the module antennas has a maximum dimension of less than one tenth of a wavelength of electromagnetic radiation coupling data between the transmission line and the at least one module antenna.
13. An electric battery comprising:
a transmission line having an elongated shape and operative as an antenna; and
a plurality of electric battery cell modules electrically coupled to form the electric battery and positioned along a length of the transmission line, each electric battery cell module comprising at least one electric battery cell and a module antenna separated from the transmission line by a separation;
wherein the separation is selected to provide an electromagnetic coupling strength between the transmission line and each module antenna sufficient to enable near-field radio wave data communication between the transmission line and each electric battery cell module, wherein the provided electromagnetic coupling strength is below an electromagnetic coupling strength threshold determined for the plurality of electric battery cell modules positioned along the transmission line, the electromagnetic coupling strength threshold determined as an electromagnetic coupling strength that causes the near-field radio wave data communication between the transmission line and at least one of the plurality of electric battery cell modules positioned along the transmission line to be compromised.
14. The electric battery of claim 13 ,
wherein each electric battery cell module further comprises a module transceiver electrically coupled to the module antenna, the arrangement further comprising a primary transceiver at one end of the transmission line; and
wherein the provided electromagnetic coupling strength is greater than a minimum electromagnetic coupling strength determined by at least one of:
subtracting a sensitivity of the primary transceiver from a transmission power of the module transceivers, or
subtracting the sensitivity of the module transceivers from the transmission power of the primary transceiver.
15. The electric battery of claim 13 , wherein the provided electromagnetic coupling strength is of at least −85 dB.
16. The electric battery of claim 13 , wherein the separation between the transmission line and each module antenna is less than one wavelength of electromagnetic radiation coupling data between the transmission line and the module antenna.
17. The electric battery of claim 13 , wherein the separation between the transmission line and each module antenna is filled with a dielectric material.
18. The electric battery of claim 17 , wherein the dielectric material is a plastic material or gaseous.
19. The electric battery of claim 13 , wherein the near-field radio wave data communication between the transmission line and each electric battery cell module data allows for communication of at least one of:
measurement data based on measurements made by at least one sensor comprised in at least one of the plurality of the electric battery cell modules, or
control data for effecting control of circuitry comprised in at least one of the plurality of battery cell modules.
20. An arrangement comprising:
a transmission line having an elongated shape and operative as an antenna; and
a plurality of electric battery cell modules positioned along a length of the transmission line, each electric battery cell module comprising at least one electric battery cell and a module antenna, each module antenna separated from the transmission line by a separation;
wherein the separation is sized to maintain reflections from all module antennas of the plurality of electric battery cell modules below a predetermined threshold, while providing at least a minimum electromagnetic coupling strength between the module antenna and transmission line so as to enable near-field radio wave data communication between the transmission line and each electric battery cell module.