Wireless Power Transmission

Abstract

A battery (100) is provided. The battery (100) includes a first electronic circuit (102) configured to operate in a transmission mode to wirelessly transmit power to a device and in a reception mode to wirelessly receive power from the device. The first electronic circuit (102) is further configured to adjust a voltage gain of the first electronic circuit (102) to compensate for a voltage drop between the battery (100) and the device during any one or more of the wireless transmission of power to the device when the battery (100) is operating in the transmission mode and the wireless reception of power from the device when the battery (100) is operating in the reception mode).

Description

Technical Field

[0001] The present disclosure relates to a battery, a device, and a method of operating the same for wireless power transfer. Background Art

[0002] In many systems, when there is no mains power available to power a device, a battery is used to power the device. The battery has contacts, and these contacts can become contaminated. In some applications, contamination of the contacts can cause problems. This has been addressed in existing systems by completely sealing the battery. However, when the battery is completely sealed, there can be no contact points. To address this, there are some existing systems where the electrical connection between the battery and the device to be powered is wireless. Thus, in these existing systems, the battery can wirelessly transfer power to the device. Wireless power transfer is used in many systems. For example, a smartphone can be charged by wireless power transfer.

[0003] However, wireless power transfer suffers from disadvantages associated with power loss and voltage drop. The power loss can be compensated to some extent by charging the battery with an external power source either in a wired manner or wirelessly (e.g., in the manner described in US2017 / 0133862). However, compensating for the voltage drop is currently not possible, and this can negatively affect the efficiency of wireless power transfer and even the operation of the device being charged using wireless power transfer. Summary of the Invention

[0004] As mentioned above, the limitation of existing systems using wireless power transfer is that they suffer from inefficient wireless power transfer between the battery and the device and even inefficient operation of the device due to the voltage drop associated with wireless power transfer. Thus, having an improvement that solves the existing problems would be valuable.

[0005] Accordingly, in a first aspect, there is provided a battery including a first electronic circuit. The first electronic circuit is configured to operate in a transmission mode to wirelessly transfer power to a device and in a reception mode to wirelessly receive power from the device. The first electronic circuit is further configured to adjust the voltage gain of the first electronic circuit to compensate for a voltage drop between the battery and the device during any one or more of the wireless transfer of power to the device when the battery is operating in the transmission mode and the wireless reception of power from the device when the battery is operating in the reception mode.

[0006] In some embodiments, the first electronic circuit may be configured to operate in the transmission mode to wirelessly transfer power to the device at or near a frequency at which the voltage gain of the first electronic circuit is independent of the load of the first electronic circuit, where the load of the first electronic circuit includes the device.

[0007] In some embodiments, the first electronic circuit may be configured to adjust a voltage gain of the first electronic circuit using a turns ratio during wireless transmission of power to the device when the battery is operating in the transmission mode.

[0008] In some embodiments, the first electronic circuit may include a full-bridge converter configured to adjust the voltage gain of the first electronic circuit by being configured to modulate the wireless transmission of power to the device to adjust the voltage gain of the first electronic circuit during wireless transmission of power to the device when the battery is operating in the transmission mode.

[0009] In some embodiments, the first electronic circuit may include a voltage multiplier configured to adjust the voltage gain of the first electronic circuit during wireless reception of power from the device when the battery is operating in the reception mode. In some embodiments, the voltage multiplier may include a portion of the full-bridge converter operating as the voltage multiplier.

[0010] According to a second aspect, there is provided a device including a second electronic circuit. The second electronic circuit is configured to operate in a transmission mode to wirelessly transmit power to a battery and in a reception mode to wirelessly receive power from the battery. The second electronic circuit is further configured to adjust a voltage gain of the second electronic circuit to compensate for a voltage drop between the device and the battery during any one or more of wireless transmission of power to the battery when the device is operating in the transmission mode and wireless reception of power from the battery when the device is operating in the reception mode.

[0011] In some embodiments, the second electronic circuit may be configured to operate in the transmission mode to wirelessly transmit power to the battery at or near a frequency at which the voltage gain of the second electronic circuit is independent of a load of the second electronic circuit, where the load of the second electronic circuit includes the battery.

[0012] In some embodiments, the second electronic circuit may be configured to adjust the voltage gain of the second electronic circuit using a turns ratio during wireless transmission of power to the battery when the device is operating in the transmission mode.

[0013] In some embodiments, the second electronic circuit may include a full-bridge converter configured to adjust the voltage gain of the second electronic circuit by modulating the wireless transmission of power to the battery to adjust the voltage gain of the second electronic circuit during the wireless transmission of power to the battery when the device is operating in the transmission mode.

[0014] In some embodiments, the second electronic circuit may include a full-bridge rectifier configured to adjust the voltage gain of the second electronic circuit by rectifying the wireless reception of power from the battery to adjust the voltage gain of the second electronic circuit during the wireless reception of power from the battery when the device is operating in the reception mode. In some embodiments, the full-bridge rectifier may include a part of the full-bridge converter operating as the full-bridge rectifier.

[0015] In some embodiments, the second electronic circuit may include a voltage multiplier configured to adjust the voltage gain of the second electronic circuit during the wireless reception of power from the battery when the device is operating in the reception mode.

[0016] According to a third aspect, there is provided a system including the battery described above and the device described above.

[0017] According to a fourth aspect, there is provided a method of operating a battery including a first electronic circuit. The first electronic circuit is configured to operate in a transmission mode to wirelessly transmit power to a device and in a reception mode to wirelessly receive power from the device. The method includes adjusting the voltage gain of the first electronic circuit to compensate for a voltage drop between the battery and the device during any one or more of the wireless transmission of power to the device when the battery is operating in the transmission mode and the wireless reception of power from the device when the battery is operating in the reception mode.

[0018] According to a fifth aspect, there is provided a method of operating a device including a second electronic circuit. The second electronic circuit is configured to operate in a transmission mode to wirelessly transmit power to a battery and in a reception mode to wirelessly receive power from the battery. The method includes adjusting the voltage gain of the second electronic circuit to compensate for a voltage drop between the device and the battery during any one or more of the wireless transmission of power to the battery when the device is operating in the transmission mode and the wireless reception of power from the battery when the device is operating in the reception mode.

[0019] According to a sixth aspect, there is provided a computer program product including a computer-readable medium having computer-readable code embodied therein, the computer-readable code being configured to, when executed on a suitable computer or processor, cause the computer or processor to perform the methods described above.

[0020] According to the aspects and embodiments described herein, limitations of existing systems are addressed. Specifically, according to the aspects and embodiments described above, a voltage drop between a battery and a device can be compensated by adjusting the voltage gain of the circuits of the battery and the device. When the voltage drop is compensated by adjustment, the system can become load-independent. In addition, the adjustment can be performed bidirectionally such that, regardless of whether power transfer is from the battery to the device or from the device to the battery, the voltage drop associated with the power transfer can be compensated. In this way, power can be wirelessly transferred in an efficient manner in either direction, and thus both the battery and the device can operate effectively. There are also no additional components required to implement such efficient power transfer.

[0021] Therefore, there are provided improved batteries, devices, systems, methods, and computer program products for wireless power transfer that are designed to overcome existing problems. These and other aspects will be apparent and elucidated with reference to the (one or more) embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Exemplary embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0023] Figure 1 is a block diagram of a battery according to an embodiment;

[0024] Figure 2 is a block diagram of a device according to an embodiment;

[0025] Figure 3 is a block diagram of a system according to an embodiment;

[0026] Figure 4 is a block diagram of a system according to another embodiment;

[0027] Figure 5 is a block diagram of a system according to another embodiment;

[0028] Figure 6 is a block diagram of a system according to another embodiment; and

[0029] Figure 7 is a block diagram of a system according to another embodiment. DETAILED DESCRIPTION

[0030] As mentioned above, improved batteries, devices, systems, methods, and computer programs for wireless power transfer are provided herein. The devices described herein can be of any type. For example, the devices described herein can be appliances (such as household appliances), mobile devices (such as smartphones, tablets, laptops, or any other mobile device), or any other type of device.

[0031] Figure 1 FIG. 100 illustrates a battery 100 according to an embodiment. As Figure 1 illustrated, battery 100 includes a first electronic circuit 102. Briefly, first electronic circuit 102 is configured to operate in a transmission mode 302 to wirelessly transfer power to device 200 and in a reception mode 304 to wirelessly receive power from device 200. Thus, wireless power transfer can operate in two directions. That is, wireless power transfer is bidirectional. In this way, wireless power transfer can operate from battery 100 to device 200 (e.g., to supply power from battery 100 to device 200) and from device 200 to battery 100 (e.g., to charge battery 100 from device 200). First electronic circuit 102 is also configured to adjust the voltage gain of first electronic circuit 102 to compensate for a voltage drop between battery 100 and device 200 during any one or more of the wireless transfer of power to device 200 when battery 100 is operating in transmission mode 302 and the wireless reception of power from device 200 when battery 100 is operating in reception mode 304. Thus, the voltage drop between battery 100 and device 200 can be compensated when battery 100 is operating in transmission mode 302, in reception mode 304, or in both transmission mode 302 and reception mode 304.

[0032] Figure 2 FIG. 200 illustrates a device 200 according to an embodiment. As Figure 2As illustrated, device 200 includes a second electronic circuit 202. Briefly, the second electronic circuit 202 is configured to operate in a transmission mode 304 to wirelessly transmit power to battery 100 and in a reception mode 302 to wirelessly receive power from battery 100. Thus, wireless power transfer can operate in two directions. That is, wireless power transfer is bidirectional. In this way, wireless power transfer can operate from battery 100 to device 200 (e.g., to supply power to device 200 from battery 100 or discharge battery 100) and from device 200 to battery 100 (e.g., to charge battery 100 from device 200). The second electronic circuit 202 is further configured to adjust the voltage gain of the second electronic circuit 202 to compensate for a voltage drop between device 200 and battery 100 during any one or more of the wireless transfer of power to battery 100 when device 200 is operating in transmission mode 304 and the wireless reception of power from battery 100 when device 200 is operating in reception mode 302. Thus, the voltage drop between device 200 and battery 100 can be compensated when device 200 is operating in reception mode 302, in transmission mode 304, or in both reception mode 302 and transmission mode 304.

[0033] Figure 3 Illustrated is a system 300 according to an embodiment. System 300 includes battery 100 described previously with reference to Figure 1 and device described previously with reference to Figure 2 Battery 100 and device 200 can be wirelessly connected to each other. For example, in some embodiments, battery 100 can be detachably separated from device 200. Battery 100 and device 200 can be wirelessly connected to each other via a wireless power link. In some embodiments, the wireless power link can be an inductive link through which power is wirelessly transferred.

[0034] As illustrated in Figure 3 the first electronic circuit 102 of battery 100 is configured to operate in a transmission mode to wirelessly transmit power to device 200, while the second electronic circuit 202 is configured to operate in a reception mode to wirelessly receive power from battery 100 (illustrated by arrow 302 in Figure 3 Also as illustrated in Figure 3 the second electronic circuit 202 is further configured to operate in a transmission mode to wirelessly transmit power to battery 100, while battery 100 is configured to operate in a reception mode to wirelessly receive power from device 200 (by Figure 3The arrows 304 in (are illustrated). Thus, wireless power transfer can operate in two directions 302, 304. That is, wireless power transfer is bidirectional. In this way, wireless power transfer can operate from the battery 100 to the device 200 (e.g., to supply power from the battery 100 to the device 200) and from the device 200 to the battery 100 (e.g., to charge the battery 100 from the device 200).

[0035] As previously mentioned, the first electronic circuit 102 is configured to adjust the voltage gain of the first electronic circuit 102 to compensate for the voltage drop between the battery 100 and the device 200 during any one or more of the wireless transfer of power to the device 200 when the battery 100 is operating in the transmission mode 302 and the wireless reception of power from the device 200 when the battery 100 is operating in the reception mode 304. Similarly, the second electronic circuit 202 is also configured to adjust the voltage gain of the second electronic circuit 202 to compensate for the voltage drop between the device 200 and the battery 100 during any one or more of the wireless transfer of power to the battery 100 when the device 200 is operating in the transmission mode 304 and the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode 302.

[0036] Therefore, the voltage drop between the battery 100 and the device 200 can be compensated in the reception mode, in the transmission mode, or in both the reception mode and the transmission mode. In fact, the wireless connection between the battery 100 and the device 200 can act as a galvanic or physical connection with minimal or no voltage drop.

[0037] Figure 4 Illustrated is a system 400 according to another embodiment. Figure 4 The system 400 illustrated in includes the battery 100 according to the previous reference of the embodiment Figure 1 and 3 described. Figure 4 The system 400 illustrated in also includes the device according to the previous reference of the embodiment Figure 2 and 3 described. The battery 100 and the device 200 can be wirelessly connected to each other. For example, in some embodiments, the battery 100 can be wirelessly separated from the device 200. The battery 100 and the device 200 can be wirelessly connected to each other via a wireless power link. In some embodiments, the wireless power link can be an inductive link through which power is wirelessly transferred. The battery 100 includes the first electronic circuit 102 described previously, and it should be understood that the first electronic circuit 102 is configured in the manner described in the previous reference Figure 1 and 3 described. The device 200 includes the second electronic circuit 202 described previously, and it should also be understood that the second electronic circuit 202 is configured in the manner described in the previous reference Figure 2 and3 configured in the described manner.

[0038] As Figure 4 Illustrated, in some embodiments, the first electronic circuit 102 of the battery 100 can include a full - bridge converter 104. As previously mentioned, the first electronic circuit 102 is configured to adjust the voltage gain of the first electronic circuit 102 to compensate for the voltage drop between the battery 100 and the device 200 during any one or more of the wireless transmission of power to the device 200 when the battery 100 is operating in the transmission mode and the wireless reception of power from the device 200 when the battery 100 is operating in the reception mode. Figure 4 Illustrates the wireless transmission of power to the device 200 when the battery 100 is operating in the transmission mode (illustrated by arrow 402). Thus, in fact, in Figure 4 the embodiments illustrated, the battery 100 is powering the device 200. In Figure 4 the embodiments of the battery 100 illustrated, the full - bridge converter 104 of the battery 100 is configured to adjust the voltage gain of the first electronic circuit 102. More specifically, the full - bridge converter 104 of the battery 100 can be configured to adjust the voltage gain of the first electronic circuit 102 by being configured to modulate the wireless transmission of power to the device 200 to adjust the voltage gain of the first electronic circuit 102 during the wireless transmission of power to the device 200 when the battery 100 is operating in the transmission mode 402.

[0039] In some embodiments, the full - bridge converter 104 of the battery 100 can include one or more switches S1, S2, S3, S4. In some embodiments, the full - bridge converter 104 of the battery 100 can be configured to modulate the wireless transmission of power to the device 200 to adjust the voltage gain of the first electronic circuit 102 using one or more switches S1, S2, S3, S4 during the wireless transmission of power to the device 200, thereby adjusting the voltage gain of the first electronic circuit 102 during the wireless transmission of power to the device 200 when the battery 100 is operating in the transmission mode 402. Those skilled in the art should understand the general operation of a full - bridge converter (such as Figure 4 the full - bridge converter illustrated) and the ways in which the full - bridge converter 104 can be used to modulate the wireless transmission of power to the device 200.

[0040] In some embodiments (e.g., Figure 4 the embodiments illustrated), the first electronic circuit 102 can be configured to adjust the voltage gain of the first electronic circuit 102 by phase - shift modulation during the wireless transmission of power to the device 200 when the battery 100 is operating in the transmission mode 402. In some embodiments (such as Figure 4In the illustrated embodiment, the first electronic circuit 102 can be configured to adjust the voltage gain of the first electronic circuit 102 using a turns ratio (or transformer ratio) during wireless power transfer from the battery 100 to the device 200 when the battery 100 is operating in the transmission mode 402. The turns ratio can act as a gain in the voltage amplitude, for example.

[0041] The turns ratio of the voltage at the battery 100 to the voltage at the device 200 can be, for example, 1 to 1.4 (i.e., 1:1.4) during wireless power transfer from the battery 100 to the device 200 when the battery 100 is operating in the transmission mode 402. This results in a turns ratio of the voltage at the device 200 to the voltage at the battery 100 in the opposite direction (i.e., during wireless power transfer from the device 200 to the battery 100 when the device 200 is operating in the transmission mode) of 1 to 0.7 (i.e., 1:0.7). To compensate for this, a voltage multiplier can be used in the opposite direction, as will be explained in more detail subsequently. The voltage multiplier can be used, for example, such that the turns ratio of the voltage at the device 200 to the voltage at the battery 100 in the opposite direction is 1 to 1.4 (i.e., 1:(0.7*2) = 1:1.4). In this way, the voltage drop associated with wireless power transfer can be compensated for by the turns ratio.

[0042] Thus, in some embodiments, the turns ratio can be used to adjust the voltage gain in one direction in the system 400, while the voltage multiplier can be used to adjust the voltage gain in the other direction in the system 400. In some embodiments, the turns ratio can be used to increase the voltage gain in one direction in the system 400. This results in a decrease in the voltage gain in the other direction in the system 400, and thus the voltage multiplier can be used to increase the voltage gain in the other direction in the system 400 (to compensate for the step-down transformation), for example, by using the voltage multiplier function. For example, a turns ratio of 1 to 1.4 (i.e., 1:1.4) can be used to adjust the voltage gain in one direction in the system 400, while the voltage multiplier can be used to produce a voltage gain of 1 to 1.4 (i.e., 1:(0.7*2) = 1:1.4) in the other direction in the system 400. Moreover, in some embodiments, phase shift modulation can be used to control the voltage gain across the wireless power link in the system 400, more specifically in the system 400, to 1 to 1 (i.e., 1:1).

[0043] In some embodiments (e.g., Figure 4In the embodiment illustrated in the figure, the battery 100 may include a first inductor L1, and the device 200 may include a second inductor L2. The first inductor L1 of the battery 100 and the second inductor L2 of the device 200 can be configured to wirelessly couple the battery 100 and the device 200. In some embodiments, the battery 100 may include a first capacitor C1. The first capacitor C1 can be configured to generate a series resonance with the first inductor L1. In this way, according to some embodiments, the first capacitor C1 and the first inductor L1 can form a first resonant circuit. Therefore, in some embodiments, the battery 100 can include a first resonant circuit. In such embodiments, the first resonant circuit may be connected to the full-bridge converter 104 of the battery 100 (e.g., connected to one or more switches S1, S2, S3, S4 of the full-bridge converter 104 of the battery 100 according to some embodiments). The full-bridge converter 104 of the battery 100 can be configured to drive the first resonant circuit of the battery 100.

[0044] As Figure 4 Illustrated in the figure, in some embodiments, the second electronic circuit 202 of the device 200 can include a full-bridge rectifier 204. As mentioned before, the second electronic circuit 202 is configured to adjust the voltage gain of the second electronic circuit 202 to compensate for the voltage drop between the device 200 and the battery 100 during any one or more of the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode and the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode. Figure 4 The figure illustrates the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode (illustrated by arrow 402). In Figure 4 In the embodiment of the device 200 illustrated in the figure, the full-bridge rectifier 204 of the device 200 can be configured to adjust the voltage gain of the second electronic circuit 202 during the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode 402. More specifically, the full-bridge rectifier 204 of the device 200 can be configured to adjust the voltage gain of the second electronic circuit 202 by being configured to rectify the wireless reception of power from the battery 100 to adjust the voltage gain of the second electronic circuit 202 during the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode 402. Those skilled in the art should understand the general operation of a full-bridge rectifier (such as Figure 4 the full-bridge rectifier illustrated in the figure) and the manner in which the full-bridge rectifier 204 can be used to rectify the wireless reception of power from the battery 100.

[0045] In some embodiments, the full - bridge rectifier 204 of device 200 may include one or more body diodes D1, D2, D3, D4. For example, in some embodiments, the full - bridge rectifier 204 of device 200 can include one or more body diodes D1, D2, D3, D4 of at least one metal - oxide - semiconductor field - effect transistor (MOSFET). In some embodiments, the full - bridge rectifier 204 of device 200 can be configured to use one or more body diodes D1, D2, D3, D4 to rectify the wireless reception of power from battery 100 to adjust the voltage gain of the second electronic circuit 202 during the wireless reception of power from battery 100 when device 200 is operating in the reception mode 402. In embodiments where one or more of the body diodes D1, D2, D3, D4 have at least one MOSFET, when one or more of the body diodes D1, D2, D3, D4 are used to rectify the wireless reception of power from battery 100, at least one MOSFET can be turned off.

[0046] In some embodiments, the second electronic circuit 202 of device 200 may include a full - bridge converter. The full - bridge converter of device 200 can take the same form as the full - bridge converter 104 of battery 100 according to some embodiments, and thus the corresponding description of the full - bridge converter 104 of battery 100 should be understood to also apply to the full - bridge converter of device 200 according to these embodiments. In embodiments where device 200 includes a full - bridge converter, the full - bridge rectifier 204 of device 200 can include a part of the full - bridge converter of device 200 that operates as the full - bridge rectifier 204. Thus, in some embodiments, the full - bridge converter of device 200 may include one or more of the body diodes D1, D2, D3, D4 described above.

[0047] In some embodiments, the full - bridge converter of device 200 can be configured to switch to operate as the full - bridge rectifier 204 of device 200. For example, in some embodiments, the full - bridge rectifier 204 of device 200 can be realized by operating the full - bridge converter of device 200 in a certain position. For example, in some embodiments, when using the full - bridge rectifier 204 of device 200, the legs of the full - bridge converter of device 200 can be set to the same state. Any leg (e.g., the left leg or the right leg) of the full - bridge converter of device 200 can be set to the same state. For example, any of the body diodes D1, D2, D3, D4 of the full - bridge converter of device 200 can be turned on. The legs not used for the full - bridge rectifier 204 of device 200 can be used as the full - bridge converter of device 200. Thus, no additional components are required in system 400 because the body diodes D1, D2, D3, D4 used for the full - bridge converter of device 200 can be reused for the full - bridge rectifier 204 of device 200 to provide the additional function of voltage - drop compensation.

[0048] Although not illustrated in Figure 4 According to some embodiments, the full - bridge rectifier 204 of device 200 can include one or more Schottky diodes. In embodiments where the full - bridge rectifier 204 of device 200 further includes one or more body diodes D1, D2, D3, D4, the one or more Schottky diodes can be in parallel with the one or more body diodes D1, D2, D3, D4. In some embodiments, the full - bridge rectifier 204 of device 200 can be configured to use the one or more Schottky diodes to rectify the wireless reception of power from battery 100 to adjust the voltage gain of the second electronic circuit 202 during the wireless reception of power from battery 100 when device 200 is operating in the reception mode 402. In this way, power loss can be minimized.

[0049] In some embodiments (such as Figure 4 the embodiments illustrated in

[0050] In some embodiments, synchronous rectification can be used by controlling one or more body diodes D1, D2, D3, D4 of the full-bridge converter of device 200. For example, in embodiments where one or more body diodes D1, D2, D3, D4 of the full-bridge converter of device 200 have at least one MOSFET, synchronous rectification can be in the case where at least one MOSFET is turned on during the time when one or more body diodes D1, D2, D3, D4 of the full-bridge converter of device 200 (or one or more Schottky diodes of the full-bridge converter of device 200) are conducting. Synchronous rectification can improve the efficiency of system 400.

[0051] Figure 5 FIG. illustrates system 400 according to another embodiment. In Figure 5 the illustrated embodiment, the first electronic circuit 102 of battery 100 includes a voltage multiplier (or voltage multiplier circuit) 106. In some embodiments, the voltage multiplier 106 can include a voltage multiplier configured to double the voltage. Thus, in some embodiments, the voltage multiplier 106 can be a voltage doubler (or voltage doubler circuit). As previously mentioned, the first electronic circuit 102 is configured to adjust the voltage gain of the first electronic circuit 102 to compensate for the voltage drop between battery 100 and device 200 during any one or more of the wireless transmission of power to battery 100 when device 200 is operating in the transmission mode and the wireless reception of power from battery 100 when device 200 is operating in the reception mode. Figure 5 FIG. illustrates the wireless transmission of power to battery 100 when device 200 is operating in the transmission mode (illustrated by arrow 404). Thus, Figure 5 FIG. illustrates Figure 4 the wireless transmission of power in the opposite direction.

[0052] In Figure 5 the illustrated embodiment of battery 100, the voltage multiplier 106 of battery 100 can be configured to adjust the voltage gain of the first electronic circuit 102 during the wireless reception of power from device 200 when battery 100 is operating in the reception mode 404. More specifically, the voltage multiplier 106 of battery 100 can be configured to adjust the voltage gain of the first electronic circuit 102 by being configured to multiply the wireless reception of power from device 200 to adjust the voltage gain of the first electronic circuit 102 during the wireless reception of power from device 200 when battery 100 is operating in the reception mode 404. In this way, the voltage drop associated with wireless power transmission can be compensated by the voltage multiplier 106 of battery 100.

[0053] In some embodiments, the voltage multiplier 106 of the battery 100 can include one or more body diodes D6, D7. For example, in some embodiments, the voltage multiplier 106 of the battery 100 can include one or more body diodes D6, D7 of at least one metal-oxide-semiconductor field-effect transistor (MOSFET). In embodiments where the one or more body diodes D6, D7 have at least one MOSFET, the at least one MOSFET can be turned off when the one or more body diodes D6, D7 are used to multiply the wireless reception of power from the device 200.

[0054] As previously described, in some embodiments, the battery 100 can include a full-bridge converter 104. In these embodiments, the voltage multiplier 106 of the battery 100 can include a portion of the full-bridge converter 104 that operates as the voltage multiplier 106. Thus, in some embodiments, the full-bridge converter 104 of the battery 100 can include the one or more body diodes D6, D7 described previously. In some embodiments, the full-bridge converter 104 of the battery 100 can be configured to switch to operate as the voltage multiplier 106 of the battery 100. For example, in some embodiments, the voltage multiplier 106 of the battery 100 can be implemented by operating the full-bridge converter 104 of the battery 100 in a certain position.

[0055] For example, in some embodiments, when using the voltage multiplier 106 of the battery 100, one leg of the full-bridge converter 104 of the battery 100 can be turned off. For example, in embodiments where the body diodes D6, D7 have at least one MOSFET, the MOSFET of one leg of the full-bridge converter 104 of the battery 100 can be turned off. The other leg of the full-bridge converter 104 of the battery 100 can be set to the same state. That is, the other leg of the full-bridge converter 104 of the battery 100 can be static. In embodiments where the body diodes D6, D7 have at least one MOSFET, for example, the other leg of the full-bridge converter 104 of the battery 100 can be static, where one MOSFET is turned on, the other MOSFET is turned off, and the MOSFETs do not switch during operation. Any leg (e.g., the left leg or the right leg) of the full-bridge converter 104 of the battery 100 can be set to the same state. The leg not used for the voltage multiplier 106 of the battery 100 can be used as the full-bridge converter 104 of the battery 100. Thus, in the system 400, no additional components are required because the body diodes D6, D7 used for the full-bridge converter 104 of the battery 100 can be reused for the voltage multiplier 106 of the battery 100 to provide an additional function of voltage drop compensation.

[0056] In some embodiments (such as Figure 5In the embodiment illustrated in the figure, the battery 100 may include a first inductor L1, and the device 200 may include a second inductor L2. The first inductor L1 of the battery 100 and the second inductor L2 of the device 200 can be configured to wirelessly couple the battery 100 and the device 200. In some embodiments, the battery 100 may include a first capacitor C1. The first capacitor C1 can be configured to generate a series resonance with the first inductor L1. In this way, according to some embodiments, the first capacitor C1 and the first inductor L1 can form a first resonant circuit. Therefore, in some embodiments, the battery 100 can include a first resonant circuit. In such embodiments, the first resonant circuit may be connected to the voltage multiplier 106 of the battery 100, for example, one or more body diodes D6, D7 of the voltage multiplier 106 of the battery 100 according to some embodiments.

[0057] As Figure 5 Illustrated in the figure, in some embodiments, the second electronic circuit 202 of the device 200 can include a full-bridge converter 206. As mentioned before, the second electronic circuit 202 is configured to adjust the voltage gain of the second electronic circuit 202 to compensate for the voltage drop between the device 200 and the battery 100 during any one or more of the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode and the wireless reception of power from the battery 100 when the device 200 is operating in the reception mode. Figure 5 The figure illustrates the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode (illustrated by arrow 404). Therefore, in fact, in Figure 5 the embodiment illustrated in the figure, the device 200 is charging the battery 100. In Figure 5 In the embodiment of the device 200 illustrated in the figure, the full-bridge converter 206 of the device 200 is configured to adjust the voltage gain of the second electronic circuit 202. More specifically, the full-bridge converter 206 of the device 200 can be configured to adjust the voltage gain of the second electronic circuit 202 by being configured to modulate the wireless transmission of power to the battery 100 to adjust the voltage gain of the second electronic circuit 202 during the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode 404.

[0058] In some embodiments, the full-bridge converter 206 of the device 200 can include one or more switches S5, S6, S7, S8. In some embodiments, the full-bridge converter 206 of the device 200 can be configured to modulate the wireless transmission of power to the battery 100 to adjust the voltage gain of the second electronic circuit 202 during the wireless transmission of power to the battery 100 using the one or more switches S5, S6, S7, S8, thereby adjusting the voltage gain of the second electronic circuit 202 during the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode 404. It should be understood by those skilled in the art that a full-bridge converter (e.g. Figure 5 The general operation of the full-bridge converter 206 and the manner in which the full-bridge converter 206 can be used to modulate the wireless transmission of power to the battery 100. In some embodiments (e.g. Figure 5 In the embodiment illustrated in FIG. 4 ), the second electronic circuit 202 may be configured to adjust the voltage gain of the second electronic circuit 202 by phase shift modulation during the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode 404. For example, the second electronic circuit 202 may be configured to control the voltage of the second electronic circuit 202 (e.g., at the full-bridge converter 206 of the device 200) by phase shift modulation to maintain a 1:1 voltage transmission from one end of the system to the other end of the system. In some embodiments (such as Figure 5 In the embodiment illustrated in FIG. 4 ), the second electronic circuit 202 can be configured to use a transformation ratio (or transformer ratio) to adjust the voltage gain of the second electronic circuit 202 during wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode 404. The transformation ratio can, for example, act as a gain in voltage amplitude.

[0059] As previously referenced Figure 4 As mentioned, the voltage transformation ratio between the voltage at the battery 100 and the voltage at the device 200 is, for example, when the battery 100 is being Figure 4 In the case where the wireless transmission period of power to the device 200 is 1 to 1.4 (i.e., 1:1.4) when operating in the transmission mode 402 illustrated in FIG. 4 , this causes a power flow in the opposite direction (i.e., when the device 200 is being Figure 5 The transformation ratio of the voltage at the device 200 during the wireless transmission of power to the battery 100 when operating in the transmission mode 404 illustrated in FIG. 4 to the voltage at the battery 100 is 1 to 0.7 (i.e., 1:0.7). To compensate for this, the first electronic circuit 102 of the battery 100 includes the previously described voltage multiplier 106. The voltage multiplier 106 of the battery 100 can, for example, be used such that the transformation ratio of the voltage at the device 200 during the wireless transmission of power to the battery 100 when the device 200 is operating in the transmission mode 404 to the voltage at the battery 100 is 1 to 1.4 (i.e., 1:(0.7*2)=1:1.4).

[0060] Thus, in some embodiments, the turns ratio can be used to adjust the voltage gain in one direction in system 400, while the voltage multiplier can be used to adjust the voltage gain in the other direction in system 400. In some embodiments, the turns ratio can be used to increase the voltage gain in one direction in system 400. This causes a decrease in the voltage gain in the other direction in system 400, and thus the voltage multiplier can be used to increase the voltage gain in the other direction in system 400 (to compensate for the step-down transformation), e.g., by using the voltage multiplier function. For example, a turns ratio of 1 to 1.4 (i.e., 1:1.4) can be used to adjust the voltage gain in one direction in system 400, while the voltage multiplier can be used to produce a voltage gain of 1 to 1.4 (i.e., 1:(0.7*2)=1:1.4) in the other direction in system 400. Moreover, in some embodiments, phase shift modulation can be used to control the voltage gain across the wireless power link in system 400, more specifically in system 400, to 1 to 1 (i.e., 1:1).

[0061] In some embodiments (such as Figure 5 the embodiment illustrated therein), control options can be used to control the output voltage at battery 100. For example, according to some embodiments, the voltage multiplier 106 of battery 100 can control the output voltage at battery 100. In some embodiments, when the voltage multiplier 106 of battery 100 is turned on and off at a specific duty cycle, the output voltage at battery 100 can be controlled on the output according to some embodiments. In some embodiments (such as Figure 5 the embodiment illustrated therein), device 200 can include a second capacitor C2. The second capacitor C2 can be configured to produce a series resonance with a second inductor L2. In this way, according to some embodiments, the second capacitor C2 and the second inductor L2 can form a second resonant circuit. Thus, in some embodiments, device 200 can include a second resonant circuit. In these embodiments, the second resonant circuit can be connected to the full-bridge converter 206 of device 200, e.g., according to some embodiments, to one or more switches S5, S6, S7, S8 of the full-bridge converter 206 of device 200. The full-bridge converter 206 of device 200 can be configured to drive the second resonant circuit of device 200.

[0062] Figure 6 System 600 according to another embodiment is illustrated. Figure 6 System 600 in is as described previously with reference to Figure 4 However,[[]] Figure 6 the second electronic circuit 202 of device 200 including a full-form full-bridge rectifier 204 is illustrated. Thus, in Figure 6In the illustrated embodiment, according to some embodiments, the full-bridge rectifier 204 of the device 200 can include one or more switches S5, S6, S7, S8. The one or more switches S5, S6, S7, S8 include one or more body diodes D1, D2, D3, D4 described previously with reference to Figure 4 Thus, it should be understood that the accompanying Figure 4 description also applies to Figure 6 . In Figure 6 the illustrated embodiment, when the full-bridge rectifier 204 of the device 200 is used, the one or more switches S5, S6, S7, S8 can be turned off. In embodiments where the one or more switches S5, S6, S7, S8 include one or more body diodes D1, D2, D3, D4 of at least one MOSFET, as described previously with reference to Figure 4 when the one or more body diodes D1, D2, D3, D4 are used to rectify the wireless reception of power from the battery 100, at least one MOSFET can be turned off.

[0063] Figure 7 FIG. illustrates a system 600 according to another embodiment. Figure 7 The system 600 in Figure 5 is as described previously with reference to Figure 7 However, Figure 7 FIG. illustrates a first electronic circuit 102 of the battery 100 including a fully formed voltage multiplier 106. Thus, in Figure 7 the illustrated embodiment, the voltage multiplier 106 of the battery 100 can include one or more switches S1, S2, S3, S4 according to some embodiments. The one or more switches include one or more body diodes D6, D7 described previously with reference to Figure 5 Thus, it should be understood that the description accompanying Figure 5 also applies to Figure 7 . In Figure 7 the illustrated embodiment, as described previously with reference to Figure 5 when the voltage multiplier 106 of the battery 100 is used, one leg of the full-bridge converter 104 of the battery 100 can be turned off. For example, the switches S1, S2 of one leg of the voltage multiplier 106 of the battery 100 can be turned off. For example, in embodiments where the body diodes of the switches S1, S2 have at least one MOSFET, the MOSFET of one leg of the full-bridge converter 104 of the battery 100 can be turned off.

[0064] Another leg of the full - bridge converter 104 of the battery 100 can be set to the same state. That is, another leg of the full - bridge converter 104 of the battery 100 can be static. In embodiments where the body diodes of the switches S3, S4 have at least one MOSFET, for example, another leg of the full - bridge converter 104 of the battery 100 can be static, where one MOSFET is turned on and the other MOSFET is turned off, and the MOSFETs do not switch during operation. Any leg (e.g., the left leg or the right leg) of the full - bridge converter 104 of the battery 100 can be set to the same state. The leg not used for the voltage multiplier 106 of the battery 100 can be used as the full - bridge converter 104 of the battery 100. Thus, no additional components are required in the system 400 because the body diodes of the switches S1, S2, S3, S4 used for the full - bridge converter 104 of the battery 100 can be reused for the voltage multiplier 106 of the battery 100 to provide the additional function of voltage - drop compensation.

[0065] Although not illustrated in the figures, in some embodiments, the second electronic circuit 202 can include a voltage multiplier configured to adjust the voltage gain of the second electronic circuit 202 during wireless reception of power from the battery 100 when the device 200 is operating in the receiving mode. For example, according to some embodiments, Figure 4 the second electronic circuit 202 can include such a voltage multiplier instead of the full - bridge rectifier 204. Similarly, for example, according to some embodiments, Figure 6 the second electronic circuit 202 can include such a voltage multiplier instead of the full - bridge rectifier 204. In embodiments where the second electronic circuit 202 includes such a voltage multiplier, the voltage multiplier of the second electronic circuit 202 can operate in the same manner as described previously for the voltage multiplier of the first electronic circuit 102, and / or can be configured in the same manner as described previously for the voltage multiplier of the first electronic circuit 102. In some embodiments, the voltage multiplier of the second electronic circuit 202 can include a voltage multiplier configured to double the voltage. Thus, in some embodiments, the voltage multiplier of the second electronic circuit 202 can be a voltage doubler (or voltage - doubler circuit).

[0066] In any of the embodiments described herein, the first electronic circuit 102 of the battery 100 can be configured to operate in transmission modes 302, 402, 602 to wirelessly transmit power to the device 200 at (or near) a frequency where the voltage gain of the first electronic circuit 102 is independent of the frequency of the load of the first electronic circuit 102. The load of the first electronic circuit 102 includes the device 200. The point at which the voltage gain of the first electronic circuit 102 is independent of the load of the first electronic circuit 102 can be referred to as the load-independent point. That is, according to some embodiments, wireless power can be transmitted to the device 200 at a frequency at or near (or close to) the load-independent point. The load-independent point can include the frequency at the second resonance peak of the transmission function of the systems 300, 400, 600. The amplitude of this second resonance peak is less dependent on the load of the systems 300, 400, 600 than the first resonance peak of the transmission function of the systems 300, 400, 600.

[0067] Similarly, in any of the embodiments described herein, the second electronic circuit 202 of the device 200 can be configured to operate in transmission modes 304, 404, 604 to wirelessly transmit power to the battery 100 at (or near) a frequency where the voltage gain of the second electronic circuit 202 is independent of the frequency of the load of the second electronic circuit 202. The load of the second electronic circuit 202 includes the battery 100. The point at which the voltage gain of the second electronic circuit 202 is independent of the load of the second electronic circuit 202 can be referred to as the load-independent point. That is, according to some embodiments, wireless power can be transmitted to the battery 100 at a frequency at or near (or close to) the load-independent point. As previously mentioned, the load-independent point can include the frequency at the second resonance peak of the transmission function of the systems 300, 400, 600. The amplitude of this second resonance peak is less dependent on the load of the systems 300, 400, 600 than the first resonance peak of the transmission function of the systems 300, 400, 600.

[0068] In any of the embodiments described herein, the voltage obtained from the voltage transformation ratio in the direction from the battery 100 to the device 200 can be more efficient than the voltage obtained by the voltage multiplier. Therefore, when using the voltage transformation ratio in the direction from the battery 100 to the device 200, the most efficient direction is used when traveling on the battery 100. This means that the battery life can be increased due to less power loss.

[0069] Also provided is a method of operating the battery 100 described herein. The battery 100 includes a first electronic circuit 102 configured to operate in transmission modes 302, 402, 602 to wirelessly transmit power to the device 200 and in reception modes 304, 404, 604 to wirelessly receive power from the device 200. The method includes adjusting the voltage gain of the first electronic circuit 102 to compensate for a voltage drop between the battery 100 and the device 200 during any one or more of the wireless transmission of power to the device 200 when the battery 100 is operating in transmission modes 302, 402, 602 and the wireless reception of power from the device 200 when the battery 100 is operating in reception modes 304, 404, 604. It should also be understood that the method may include any other steps and any combination of steps corresponding to the operation of the battery 100 described previously with reference to Figure 1 、 3 、4, 5, 6, and 7.

[0070] Also provided is a method of operating the device 200 described herein. The device 200 includes a second electronic circuit 202 configured to operate in transmission modes 304, 404, 604 to wirelessly transmit power to the battery 100 and in reception modes 302, 402, 602 to wirelessly receive power from the battery 100. The method includes adjusting the voltage gain of the second electronic circuit 202 to compensate for a voltage drop between the device 200 and the battery 100 during any one or more of the wireless transmission of power to the battery 100 when the device 200 is operating in transmission modes 304, 404, 604 and the wireless reception of power from the battery 100 when the device 200 is operating in reception modes 302, 402, 602. It should be understood that the method may include any other steps and any combination of steps corresponding to the operation of the device 200 described previously with reference to Figure 1 、 3 、4, 5, 6, and 7.

[0071] In addition to the battery 100, device 200, systems 300, 400, 600 and methods described previously, a computer program product including a computer-readable medium is provided. The computer-readable medium has computer-readable code embodied therein. The computer-readable code is configured such that, when run on a suitable computer or processor, it causes the computer or processor to perform any of the methods described herein. The computer-readable medium can be, for example, any entity or device capable of carrying the computer program product. For example, the computer-readable medium can include a storage medium such as a ROM (such as a CDROM or semiconductor ROM), or a magnetic recording medium (such as a hard disk). Additionally, the computer-readable medium can be a transmittable computer-readable medium such as an electrical or optical signal, which can be conveyed via a cable or optical fiber or by radio or other means. When the computer program product is embodied in such a signal, the computer-readable medium can consist of such a cable or other device or unit. Alternatively, the computer-readable medium can be an integrated circuit in which the computer program product is embodied, the integrated circuit being adapted to perform any of the methods described herein or for the execution of any of the methods described herein.

[0072] Accordingly, improved battery 100, device 200, systems 300, 400, 600, methods and computer program products are provided herein.

[0073] Those skilled in the art will be able to understand and realize other variations of the disclosed embodiments when studying the drawings, the disclosure, and the claims, in practicing the principles and techniques described herein. In the claims, the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. A single processor or other unit can implement the functions of several items recited in the claims. Although specific measures are recited in mutually different dependent claims, this does not indicate that a combination of these measures cannot be used advantageously. The computer program can be stored or distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but can also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A battery (100) including a first electronic circuit (102), the first electronic circuit being configured to: operate in a transmission mode (302, 402, 602) to wirelessly transmit power to a device (200); operate in a receiving mode (304, 404, 604) to wirelessly receive power from the device (200); and adjust a voltage gain of the first electronic circuit (102) to compensate for a voltage drop between the battery (100) and the device (200) during any one or more of the wireless transmission of power to the device (200) when the battery (100) is operating in the transmission mode (302, 402, 602) and the wireless reception of power from the device (200) when the battery (100) is operating in the receiving mode (304, 404, 604), wherein, The first electronic circuit (102) includes: A voltage multiplier (106) configured to increase the efficiency of wireless power transfer from the device to the battery in the receiving mode by adjusting the voltage gain of the first electronic circuit (102) during wireless reception of power from the device (200) when the battery (100) is operating in the receiving mode (304, 404, 604).

2. The battery (100) according to claim 1, wherein, The first electronic circuit (102) is configured to: Operate in the transmission mode (302, 402, 602) to wirelessly transmit power to the device (200) at or near a frequency where the voltage gain of the first electronic circuit (102) is independent of the load of the first electronic circuit (102), wherein the load of the first electronic circuit (102) includes the device (200).

3. The battery (100) according to claim 1 or 2, wherein, The first electronic circuit (102) is configured to use a turns ratio to adjust the voltage gain of the first electronic circuit (102) during wireless transmission of power to the device (200) when the battery (100) is operating in the transmission mode (302, 402, 602).

4. The battery (100) according to any one of the preceding claims, wherein, The first electronic circuit (102) includes: A full-bridge converter (104) configured to adjust the voltage gain of the first electronic circuit (102) by: Being configured to modulate the wireless transmission of power to the device (200) to adjust the voltage gain of the first electronic circuit (102) during wireless transmission of power to the device (200) when the battery (100) is operating in the transmission mode (302, 402, 602).

5. The battery (100) according to claim 4, wherein, The voltage multiplier (106) includes a part of the full-bridge converter (104) that operates as the voltage multiplier (106).

6. A system (300, 400, 600) including: The battery (100) according to any one of claims 1 to 5; and A device (200) including a second electronic circuit (202), the second electronic circuit being configured to: Operate in a transmission mode (304, 404, 604) to wirelessly transmit power to the battery (100); Operate in a receiving mode (302, 402, 602) to wirelessly receive power from the battery (100); And Adjust the voltage gain of the second electronic circuit (202) to compensate for a voltage drop between the device (200) and the battery (100) during any one or more of wireless transmission of power to the battery (100) when the device (200) is operating in the transmission mode (304, 404, 604) and wireless reception of power from the battery (100) when the device (200) is operating in the receiving mode (302, 402, 602).

7. The system (300, 400, 600) according to claim 6, wherein, The second electronic circuit (202) is configured to: Operate in the transmission modes (304, 404, 604) to wirelessly transmit power to the battery (100) at or near a frequency where the voltage gain of the second electronic circuit (202) is independent of the load of the second electronic circuit (202), wherein the load of the second electronic circuit (202) includes the battery (100).

8. The system (300, 400, 600) according to any one of claims 6 or 7, wherein, The second electronic circuit (202) is configured to use a turns ratio to adjust the voltage gain of the second electronic circuit (202) during the wireless transmission of power to the battery (100) when the device (200) is operating in the transmission modes (304, 404, 604).

9. The system (300, 400, 600) according to any one of claims 6 to 8, wherein, The second electronic circuit (202) includes: A full-bridge converter (206) configured to adjust the voltage gain of the second electronic circuit (202) by: Being configured to modulate the wireless transmission of power to the battery (100) to adjust the voltage gain of the second electronic circuit (202) during the wireless transmission of power to the battery (100) when the device (200) is operating in the transmission modes (304, 404, 604).

10. The system (300, 400, 600) according to any one of claims 6 to 9, wherein, The second electronic circuit (202) includes: A full-bridge rectifier (204) configured to adjust the voltage gain of the second electronic circuit (202) by: Being configured to rectify the wireless reception of power from the battery (100) to adjust the voltage gain of the second electronic circuit (202) during the wireless reception of power from the battery (100) when the device (200) is operating in the reception modes (302, 402, 602).

11. The system (300, 400, 600) according to claim 10 when dependent on claim 9, wherein, The full-bridge rectifier (204) includes a part of the full-bridge converter (206) that operates as the full-bridge rectifier (204).

12. The system (300, 400, 600) according to any one of claims 6 to 9, wherein, The second electronic circuit (202) includes: A voltage multiplier configured to adjust the voltage gain of the second electronic circuit (202) during the wireless reception of power from the battery (100) when the device (200) is operating in the reception mode.

13. A method of operating a system (300, 400, 600) including a battery (100), wherein, The battery includes a first electronic circuit (102) configured to operate to wirelessly transmit power to a device (200) in transmission modes (302, 402, 602) and to wirelessly receive power from the device (200) in reception modes (304, 404, 604), wherein the method includes: Adjust the voltage gain of the first electronic circuit (102) to compensate for a voltage drop between the battery (100) and the device (200) during any one or more of the wireless transmission of power to the device (200) when the battery (100) is operating in the transmission mode (302, 402, 602) and the wireless reception of power from the device (200) when the battery (100) is operating in the reception mode (304, 404, 604), wherein a voltage multiplier of the first electronic circuit (102) is used to adjust the voltage gain of the first electronic circuit (102) to increase the efficiency of wireless power transfer from the device to the battery during the wireless reception of power from the device (200) when the battery (100) is operating in the reception mode (304, 404, 604).

14. The method according to claim 13, wherein, The system (300, 400, 600) includes a device (200), and the device (200) includes a second electronic circuit (202) configured to operate in a transmission mode (304, 404, 604) to wirelessly transmit power to a battery (100) and in a reception mode (302, 402, 602) to wirelessly receive power from the battery (100), wherein the method includes: Adjust the voltage gain of the second electronic circuit (202) to compensate for a voltage drop between the device (200) and the battery (100) during any one or more of the wireless transmission of power to the battery (100) when the device (200) is operating in the transmission mode (304, 404, 604) and the wireless reception of power from the battery (100) when the device (200) is operating in the reception mode (302, 402, 602).

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