首页> 外国专利> power transmitter for transferring power to a power receiver using a wireless inductive power signal; power transfer system; method of operating a power transmitter arranged to transfer power to a power receiver using a wireless inductive power signal; and power receiver for receiving power from a power transmitter via a wireless inductive power signal

power transmitter for transferring power to a power receiver using a wireless inductive power signal; power transfer system; method of operating a power transmitter arranged to transfer power to a power receiver using a wireless inductive power signal; and power receiver for receiving power from a power transmitter via a wireless inductive power signal

机译：功率发送器，用于使用无线感应功率信号将功率传输到功率接收器;动力传输系统;操作功率发送器的方法，该功率发送器被布置为使用无线感应功率信号将功率传输到功率接收器;和功率接收器，用于通过无线感应功率信号从功率发送器接收功率

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摘要

A power transmitter (101) for transferring power to a power receiver (105) using a wireless inductive power signal, the power transmitter (101) comprising: an inductor (103) for provide the power signal; a power signal generator (201) for driving inductor (103) to provide the power signal; a calibration controller (211) to determine if a power loss calibration has been made for pairing the power transmitter (101) with the power receiver (105), and the power loss calibration determines an expected relationship between a received power indication provided by the power receiver (105) and a transmitted power indication to the power transmitter (101); a power limiter (205) arranged to restrict a power supplied to the inductor (103) not to exceed a threshold unless a power loss calibration has been made for pairing the power transmitter (101) with the power receiver. power (105); a receiver (207) for receiving received power indications from the power receiver (105); and a detector (209) for detecting parasitic power consumption in response to a deviation between the ratio of transmitted power indication to received power indication and the expected ratio of transmitted power indication to received power indication exceeding a threshold. Power transmitter according to claim 1, characterized in that it further comprises: a calibrator (211) for performing a power loss calibration to determine the expected ratio during a calibration phase, the expected ratio being determined by a comparison of at least one transmitted power indication and at least one received power indication during the calibration phase. Power transmitter according to claim 2, characterized in that the calibrator (211) is arranged to request a user input and to perform power loss calibration only when the user input is received. Power transmitter according to one of claims 2 or 3, characterized in that the calibrator (211) is arranged to perform the power loss calibration by initially determining a first expected ratio at a first power level and then determining a second expected ratio at a second power level using the first expected ratio, the second power level being greater than the first power level. Power transmitter according to Claim 4, characterized in that the calibrator (211) is arranged to, when determining the second power level, restrict the power supplied to the inductor in response to the detection of a relationship between the power indication. transmitted and the received power indication differs from the expected relationship between the transmitted power indication and the received power indication. Power transmitter according to Claim 2, characterized in that it further comprises an expected ratio adapter arranged to adapt the expected ratio during a power transfer phase, the expected ratio being adapted in response to the comparison between at least one indication. transmitted power and at least one power indication received during the power transfer phase. Power transmitter according to Claim 6, characterized in that the adaptation rate for adapting the expected ratio during the power transfer phase is lower than the adaptation rate for determining the expected ratio during the calibration phase. Power transmitter according to either of Claims 6 and 7, characterized in that the expected ratio adapter is arranged not to adapt the expected ratio in response to transmitted power indications and received power indications in response to a detection that a deviation between the ratio between the transmitted power indication and the received power indication and the expected ratio between the transmitted power indication and the received power indication exceeds a threshold. A power transmitter according to any one of claims 1, 2, 4 or 6, further characterized by: a memory (203) for storing identities and expected ratio data for power receivers; a receiver (207) for receiving a first identity of the power receiver (105); and wherein the calibration controller (203) is arranged to determine if power loss calibration has been performed to pair power transmitter (101) with power receiver (103) in response to first identity and stored identities. in the memory. Power transmitter according to claim 9, characterized in that the calibration controller (203) is arranged to initiate a power loss calibration in response to a detection that no expected valid relationship data is stored for the first identity. Power transmitter according to Claim 9, characterized in that the calibration controller (203) is arranged to omit the power loss calibration and to extract the expected data from the power receiver identity (105) relationship. memory if the identity of the power receiver 105 matches one of the identities stored in memory. Power transfer system, characterized in that it comprises a power transmitter (101) and a power receiver (105), the power transmitter (101) being arranged to transfer power to a power receiver (105) by use. of a wireless inductive power signal, wherein the power transmitter (101) comprises: an inductor (103) for providing the power signal; a power signal generator (201) for driving inductor (103) to provide the power signal; The power transfer system further comprises: a calibration controller (211) for determining whether a power loss calibration has been made for pairing the power transmitter (101) with the power receiver (105), the calibration being power loss determines an expected relationship between a received power indication provided by the power receiver (105) and a transmitted power indication to the power transmitter (101); a power limiter (205) arranged to restrict a power supplied to the inductor (103) not to exceed a threshold unless a power loss calibration has been made for pairing the power transmitter (101) with the power receiver. power (105); a receiver (207) for receiving received power indications from the power receiver (105); and a detector (209) for detecting parasitic power consumption in response to a deviation between the ratio of transmitted power indication to received power indication and the expected ratio of transmitted power indication to received power indication exceeding a threshold. A method of operating a power transmitter (101) arranged to transfer power to a power receiver (105) using a wireless inductive power signal, the method comprising: triggering an inductor (103) to provide the power signal; determine whether a power loss calibration has been made for pairing the power transmitter (101) with the power receiver (105), and the power loss calibration determines an expected relationship between a received power indication provided by the receiver (105) and an indication of power transmitted to the power transmitter (101); restricting the power supplied to the inductor (103) not to exceed a threshold unless a power loss calibration has been made for pairing the power transmitter (101) with the power receiver (105); and receiving indications of power received from the power receiver (105); and detecting parasitic power consumption in response to a deviation between the ratio of the transmitted power indication to the received power indication and the expected relationship between the transmitted power indication and the received power indication exceeding a threshold. 14. power receiver (105) for receiving power from a power transmitter (101) via a wireless inductive power signal, the power receiver (105) comprising: an inductor (103) for receiving the power signal. potency; a calibration controller to determine whether a power loss calibration has been made for pairing the power transmitter (101) with the power receiver (105), and the power loss calibration determines an expected relationship between a power indication. received power supplied by the power receiver (105) and an indication of power transmitted to the power transmitter (101); and a power limiter arranged to restrict a power required by a power transmitter not to exceed a threshold unless a power loss calibration has been made for pairing the power transmitter (101) with the power receiver ( 105); a detector for detecting parasitic power consumption in response to a deviation between a ratio of a received power indication received from the power transmitter (101) to a received power indication from the power receiver (105) and the expected relationship between the transmitted power indication and received power indication exceeding a threshold.

机译：一种功率发送器（101），用于使用无线感应功率信号将功率传输到功率接收器（105），该功率发送器（101）包括：电感器（103），用于提供功率信号;功率信号发生器（201），用于驱动电感器（103）以提供功率信号;校准控制器（211），以确定是否已经进行了功率损耗校准，以将功率发送器（101）与功率接收器（105）配对，并且功率损耗校准确定了功率提供的接收功率指示之间的预期关系接收器（105）和向功率发送器（101）发送的功率指示;功率限制器（205），其被配置为限制提供给电感器（103）的功率不超过阈值，除非已经进行功率损耗校准以将功率发送器（101）与功率接收器配对。电源（105）;接收器（207），用于从功率接收器（105）接收接收到的功率指示;检测器（209），用于响应于发射功率指示与接收功率指示的比率与期望的发射功率指示与接收功率指示的比率之间的偏差超过阈值而检测寄生功率消耗。 2.根据权利要求1所述的功率发送器，其特征在于，还包括：校准器（211），用于执行功率损耗校准以确定在校准阶段期间的期望比率，所述期望比率通过比较至少一个发射功率指示来确定。在校准阶段至少有一个接收功率指示。 3.根据权利要求2所述的功率发送器，其特征在于，所述校准器（211）被布置为仅在接收到用户输入时请求用户输入并执行功率损耗校准。 4.根据权利要求2或3中的一项所述的功率发送器，其特征在于，所述校准器（211）被布置为通过首先确定在第一功率水平的第一期望比率，然后确定在第二功率的第二期望比率来执行功率损耗校准。使用第一期望比率的第二功率水平，第二功率水平大于第一功率水平。 5.根据权利要求4所述的功率发送器，其特征在于，所述校准器（211）被设置为：当确定所述第二功率电平时，响应于检测到所述功率指示之间的关系来限制提供给所述电感器的功率。发送功率和接收功率指示不同于发送功率指示和接收功率指示之间的期望关系。 3.根据权利要求2所述的功率发送器，其特征在于，所述功率发送器还包括期望比率适配器，所述期望比率适配器被布置为在电力传输阶段期间适配所述期望比率，所述期望比率响应于至少一个指示之间的比较而被适配。功率传输阶段中接收到的传输功率和至少一个功率指示。 7.根据权利要求6所述的功率发送器，其特征在于，用于在所述功率传递阶段期间适配所述期望比率的适配率低于用于在所述校准阶段期间用于确定所述期望比率的适配率。 8.根据权利要求6和7中的任一项所述的功率发送器，其特征在于，所述期望比率适配器被设置为不响应于所发送的功率指示和所接收的功率指示而响应于检测到所述所发送的比率之间的偏差而不适配所述期望的比率。功率指示和接收功率指示以及发射功率指示和接收功率指示之间的期望比率超过阈值。 7.根据权利要求1、2、4或6中任一项所述的功率发送器，其特征还在于：存储器（203），用于存储功率接收器的身份和期望比率数据;以及接收器（207），用于接收功率接收器（105）的第一标识;并且其中校准控制器（203）被布置为响应于第一标识和存储的标识来确定是否已经执行了功率损耗校准以将功率发送器（101）与功率接收器（103）配对。在内存中。 10.根据权利要求9所述的功率发送器，其特征在于，所述校准控制器（203）被布置为响应于检测到没有存储针对所述第一身份的预期有效关系数据而发起功率损耗校准。 10.根据权利要求9所述的功率发送器，其特征在于，所述校准控制器（203）被布置为省略所述功率损耗校准，并且从所述功率接收器身份（105）关系中提取期望数据。如果功率接收器105的身份与存储在存储器中的身份之一匹配，则存储在存储器中。功率传输系统，其特征在于，其包括功率发送器（101）和功率接收器（105）功率发送器（101）被布置为通过使用将功率传递到功率接收器（105）。无线感应功率信号的一种，其中功率发送器（101）包括：用于提供功率信号的电感器（103）;功率信号发生器（201），用于驱动电感器（103）以提供功率信号;功率传输系统还包括：校准控制器（211），用于确定是否已经进行了功率损耗校准以将功率发送器（101）与功率接收器（105）配对，该校准是功率损耗，确定功率损耗之间的期望关系。由功率接收器（105）提供的接收功率指示以及向功率发送器（101）的发送功率指示;功率限制器（205），其被配置为限制提供给电感器（103）的功率不超过阈值，除非已经进行功率损耗校准以将功率发送器（101）与功率接收器配对。电源（105）;接收器（207），用于从功率接收器（105）接收接收到的功率指示;检测器（209），用于响应于发射功率指示与接收功率指示的比率与期望的发射功率指示与接收功率指示的比率之间的偏差超过阈值而检测寄生功率消耗。一种操作功率发送器（101）的方法，该方法布置成使用无线感应功率信号将功率传输到功率接收器（105），该方法包括：触发电感器（103）以提供功率信号;确定是否已经进行了功率损耗校准，以将功率发送器（101）与功率接收器（105）配对，并且功率损耗校准确定了接收器（105）提供的接收功率指示与功率指示之间的预期关系。传输到功率发送器（101）的功率;除非已经进行了用于将功率发送器（101）与功率接收器（105）配对的功率损耗校准，否则限制提供给电感器（103）的功率不超过阈值;接收从电力接收器接收的电力指示（105）;响应于发射功率指示与接收功率指示的比率与发射功率指示与接收功率指示之间的期望关系之间的偏差超过阈值，检测寄生功率消耗。 14.用于通过无线感应功率信号从功率发送器（101）接收功率的功率接收器（105），该功率接收器（105）包括：用于接收功率信号的电感器（103）。效力校准控制器确定是否已经进行了功率损耗校准，以将功率发送器（101）与功率接收器（105）配对，并且功率损耗校准确定了功率指示之间的期望关系。接收由功率接收器（105）提供的功率以及向功率发射器（101）传输的功率的指示;功率限制器，被配置为限制功率发送器所需的功率不超过阈值，除非已经进行了功率损耗校准以将功率发送器（101）与功率接收器（105）配对。检测器，其用于响应于从电力发送器（101）接收的接收电力指示与从电力接收器（105）接收的电力指示之间的比率与所发送的电力指示之间的期望关系和偏差之间的偏差来检测寄生电力消耗。接收功率指示超过阈值。

著录项

公开/公告号BR112015008218A2

专利类型
公开/公告日2017-07-04

原文格式PDF
申请/专利权人 KONINKLIJKE PHILIPS N.V.;
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申请/专利号BR20151108218
发明设计人 ANDRIES VAN WAGENINGEN;
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申请日2013-09-13
分类号
国家 BR
入库时间 2022-08-21 13:40:15

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