WO2014173034A1 - 可调谐的无线电力传输发射方法、装置及系统 - Google Patents
可调谐的无线电力传输发射方法、装置及系统 Download PDFInfo
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- WO2014173034A1 WO2014173034A1 PCT/CN2013/080761 CN2013080761W WO2014173034A1 WO 2014173034 A1 WO2014173034 A1 WO 2014173034A1 CN 2013080761 W CN2013080761 W CN 2013080761W WO 2014173034 A1 WO2014173034 A1 WO 2014173034A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
Definitions
- the present invention relates to the field of power transmission technologies, and in particular, to a tunable wireless power transmission and transmission method, apparatus, and system. Book
- a frequency conversion method is adopted to control a wireless power transmission system for power transmission.
- the resonance parameter can only be configured for a specific load point.
- the resonance parameters cannot be set for the current load point, which causes the drive frequency and the resonance frequency to be detuned, thereby reducing the transmission efficiency of the wireless power transmission system.
- An object of the present invention is to provide a tunable wireless power transmission and transmission method, apparatus and system.
- the resonance parameter is not adjustable, resulting in detuning of the driving frequency and the resonance frequency, thereby reducing The problem of transmission efficiency of wireless power transmission systems.
- the present invention adopts the following technical solutions:
- a tunable wireless power transmission method includes: acquiring current load power, detecting whether the power segment where the current load power is located is compared to the power segment where the load power is located at the previous moment Same load work Rate segment
- the drive frequency and the resonance parameter are adjusted.
- detecting whether the power segment where the current load power is located is the same load power segment as the power segment where the load power is located at the previous time, including: obtaining the current load power and the power threshold, and determining the current load power of the current load power according to the power threshold Segment, and record;
- adjusting the driving frequency comprises: adjusting the driving frequency according to the resonant frequency, and the adjusted driving frequency is the same as the resonant frequency.
- a tunable wireless power transmission transmitting device includes: a load power detecting module and a load adjusting module connected to the power detecting circuit;
- the load power detection module is configured to obtain the current load power, and detect whether the power segment where the current load power is located is the same load power segment as the power segment where the load power is located at the previous time;
- the load adjustment module is configured to adjust the driving frequency and the resonance parameter when the power segment where the current load power is located is different from the power segment where the load power is located at the previous moment.
- the load power detection module comprises:
- the current load power obtains the current load power and the power threshold, determines the current load power segment where the current load power is located according to the power threshold, and records;
- the comparison judgment module obtains the power segment where the load power is located at the previous moment, and compares whether the current power load segment and the previous load power segment are the same load power segment.
- the load adjustment module comprises: a main circuit control module and a tuning module connected thereto;
- the main circuit control module is configured to receive a signal sent by the load power detection module to detect whether the power segment of the current load power is the same load power segment as the power segment where the load power is located at the previous moment, and drive the tuning module according to the signal;
- the tuning module is configured to adjust the resonant capacitor matrix of the access circuit under the driving of the main circuit control module.
- the method further includes: a power supply module, a primary coil module, and an inverter circuit module;
- One end of the load adjustment module is connected to the power supply module, and the other end is connected to the primary coil module;
- One end of the inverter circuit is connected to the load adjustment module, and the other end is connected to the primary coil module.
- a tunable wireless power transmission system comprising: a tunable wireless power transmission receiving device consisting of a secondary side coil, a secondary power supply module and a load connected in sequence;
- a tunable wireless power transmission and transmission method, device and system disclosed by the present invention include: acquiring current load power, and detecting a power segment where the current load power is located, compared with the prior art. Whether the power segment where the load power is located is the same load power segment at the previous moment; when the power segment where the current load power is located is different from the power segment where the load power is at the previous moment, the drive frequency and the resonance parameter are adjusted.
- the resonance parameter and the driving frequency are adjusted to avoid detuning, thereby improving the transmission efficiency of the wireless power transmission system.
- FIG. 1 is a schematic flow chart of a tunable wireless power transmission and transmission method according to Embodiment 1 of the present invention
- FIG. 2 is a schematic structural diagram of a tunable wireless power transmission transmitting apparatus according to Embodiment 3 of the present invention.
- FIG. 3 is a schematic structural diagram of a tunable wireless power transmission transmitting apparatus according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic diagram of an apparatus for a tunable wireless power transmission system according to Embodiment 5 of the present invention. detailed description
- a first embodiment of the present invention discloses a tunable wireless power transmission and transmission method. As shown in FIG. 1, the method includes:
- Step S101 Obtain a current load power.
- Step S102 detecting whether the power segment where the current load power is located is the same load power segment as the power segment where the load power is located at the previous time; It should be noted that if the power segment where the current load power is located is the same load power segment as the power segment where the load power is located at the previous moment, the current driving power and the resonance parameter are maintained.
- the specific process of detecting whether the power segment where the current load power is located is the same as the power segment where the load power is located at the previous time includes:
- the current load power and power threshold are obtained, and the current load power is determined according to the power threshold, and recorded;
- Step S103 Adjust the driving frequency and the resonance parameter when the power segment where the current load power is located is different from the power segment where the load power is located at the previous time.
- adjusting the driving frequency includes: adjusting the driving frequency according to the resonant frequency, and the adjusted driving frequency is the same as the resonant frequency.
- the wireless power transmission system has the highest efficiency, thereby improving the transmission efficiency of the wireless power transmission system.
- Embodiment 2 According to a tunable wireless power transmission and transmission method disclosed in Embodiment 1 of the present invention, when the load is located in different power segments, the resonance parameter and the driving frequency are adjusted to avoid detuning, thereby improving the transmission efficiency of the wireless power transmission.
- Embodiment 2 when the load is located in different power segments, the resonance parameter and the driving frequency are adjusted to avoid detuning, thereby improving the transmission efficiency of the wireless power transmission.
- Embodiment 1 of the present invention For a more clarified description of a tunable wireless power transmission and transmission method disclosed in Embodiment 1 of the present invention, a tunable wireless power transmission and transmission method disclosed in Embodiment 2 of the present invention is disclosed in Embodiment 1 of the present invention. The technical solution is illustrated.
- Load power range is 0 ⁇ 600 watts
- load power threshold is 200 watts and 400 watts, then 0 ⁇ 199 watts
- the load power in the interval is located in the low load power segment, and the load power in the range of 200 to 399 watts is located in the medium load power segment, and the load power in the range of 400 to 600 watts is located in the high load power segment.
- the power segment where the current load power is located is the low load power segment and is recorded.
- the power segment where the load power is located at the previous moment is the low load power segment, which is the same as the load power segment where the current load power is located, and the current drive power and tuning parameters are maintained.
- the load power of the previous moment is 375 watts
- the power segment where the load power is located at the previous moment is the high load power segment, and the driving power and tuning parameters are adjusted differently from the load power segment where the current load power is located.
- Embodiment 3 According to a tunable wireless power transmission and transmission method disclosed in Embodiment 2 of the present invention, when the load is located in different power segments, the resonance parameter and the driving frequency are simultaneously adjusted to avoid detuning, thereby improving the transmission efficiency of the wireless power transmission.
- Embodiment 1 of the present invention discloses a tunable wireless power transmission and transmission method.
- a second embodiment of the present invention discloses a tunable wireless power transmission and transmission device.
- the method includes: The power detection module 1 and the load adjustment module 2 connected to the power detection module 1; the load power detection module 1 is configured to detect whether the power segment where the current load power is located is the same load power segment as the power segment where the load power is located at the previous time;
- the power detection module 1 includes:
- the current load power obtains the current load power and the power threshold, determines the current load power segment where the current load power is located according to the power threshold, and records;
- the comparison judging module 12 obtains the power segment where the load power is located at the previous moment, and compares the current power load. Whether the segment and the previous moment load power segment are the same load power segment.
- the load power adjustment module 2 is configured to adjust the driving frequency and the resonance parameter when the power segment where the current load power is located is different from the power segment where the load power is at the previous moment.
- the load power adjustment module 2 includes:
- main circuit control module 21 a main circuit control module 21 and a tuning module 22 connected to the main circuit control module 21;
- the main circuit control module 21 is configured to receive a signal sent by the load power detection module to detect whether the power segment of the current load power is the same load power segment as the power segment where the load power is located at the previous time, and drive the tuning module 22 according to the signal.
- the main circuit control module 21 is an MCU (Micro Controller Unit).
- the tuning module 22 is configured to adjust the resonant capacitor matrix of the access circuit under the driving of the main circuit control module.
- the wireless power transmission system is the most efficient, thereby improving the transmission efficiency of the wireless power transmission system.
- a tunable wireless power transmission transmitting device disclosed in Embodiment 3 of the present invention acquires a resonant capacitor array corresponding to a current load power for different load powers, and adjusts a resonant parameter of a current load power according to the resonant capacitor array; and simultaneously acquires a current load
- the resonant frequency of the power adjusts the driving frequency according to the corresponding relationship between the preset resonant frequency and the driving frequency, so that the resonant frequency and the driving frequency are consistent, thereby improving the transmission efficiency of the wireless power transmission.
- Embodiment 4 Embodiment 4
- a tunable wireless power transmission device disclosed in Embodiment 4 of the present invention includes: a load power detection module 1 and a load adjustment module 2 connected to the power detection module 1 further include: a power supply module 3, an original Side coil module 4 and inverter circuit module 5;
- the load adjustment module 2 is connected to the power supply module 3 at one end and the primary coil module 4 at the other end;
- the inverter circuit module is connected to the load adjustment module 2 at the 5th end and the primary coil module 4 at the other end.
- the resonance parameter and the driving frequency are adjusted to avoid detuning, thereby improving the transmission efficiency of the wireless power transmission.
- a tunable wireless power transmission system is disclosed in the fourth embodiment of the present invention.
- the load power detection module 1 is included.
- the load adjustment module 2 connected to the power detection module 1 further includes a power supply module 3, a primary coil module 4, and an inverter circuit module 5;
- Secondary coil modules connected in sequence: 6, secondary power module 7 and load 8.
- the tunable wireless power transmission system disclosed in Embodiment 5 of the present invention adjusts the resonance parameter when the load is located in different power segments, and compensates for the inductance variable of the primary coil module 4 and the secondary coil module 6 to avoid loss. Harmonic, thereby improving the transmission efficiency of the wireless power transmission system.
- a general-purpose computing device which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices.
- the invention may be implemented by program code executable by the computer device so that they may be stored in the storage device by the computing device, or they may be separated It is implemented by making individual integrated circuit modules, or by making a plurality of modules or steps of them into a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
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Abstract
本发明公开了一种可调谐的无线电力传输发射方法、装置及系统。该可调谐的无线电力传输发射方法包括：检测当前负载功率所在功率段相较于前一时刻负载功率所在功率段是否为同一负载功率段；当前负载功率所在功率段相较于前一时刻负载功率所在功率段为不同负载功率段时，调整驱动频率和谐振参数。通过本发明公开的一种可调谐的无线电力传输发射方法、装置及系统，当负载功率位于不同负载功率段时，调整谐振参数和驱动频率，避免发生失谐，从而提高了无线电力传输系统的传输效率。
Description
可调谐的无线电力传输发射方法、 装置及系统
技术领域 本发明涉及电力传输技术领域， 尤其涉及一种可调谐的无线电力传输发射 方法、 装置及系统。 说 书
背景技术 随着用户对用电要求的提高， 高效、 便捷的无线电力传输成为电能传输的 主流发展方向。 在现有技术中， 采用变频方式来控制无线电力传输系统进行电能传输。 采 用该方式的无线电力传输系统对应不同功率段的负载时， 只能针对某一特定的 负载点进行谐振参数的配置。 当系统工作在其他功率段的负载时， 不能针对当 前的负载点进行谐振参数的设置， 导致驱动频率和谐振频率失谐， 从而降低无 线电力传输系统的传输效率。
发明内容 本发明的目的在于提出一种可调谐的无线电力传输发射方法、 装置及系 统， 克服现有技术中负载功率发生变化时， 谐振参数不可调， 导致驱动频率和 谐振频率失谐， 从而降低无线电力传输系统的传输效率的问题。 为达此目的， 本发明采用以下技术方案： 一种可调谐的无线电力传输发射方法， 包括： 获取当前负载功率， 检测当 前负载功率所在功率段相较于前一时刻负载功率所在功率段是否为同一负载功
率段；
当当前负载功率所在功率段相较于前一时刻负载功率所在功率段为不同负 载功率段时， 调整驱动频率和谐振参数。
优选地， 检测当前负载功率所在功率段相较于前一时刻负载功率所在功率 段是否为同一负载功率段， 包括- 获取当前负载功率和功率阈值， 依据功率阔值判断当前负载功率所在当前 负载功率段， 并记录；
获取前一时刻负载功率所在功率段， 比较当前功率负载段与前一时刻负载 功率段是否为同一负载功率段。
优选地， 调整驱动频率， 包括： 依据谐振频率调整驱动频率， 调整后的驱 动频率与谐振频率相同。
一种可调谐的无线电力传输发射装置， 包括， 负载功率检测模块和与功率 检测电路连接的负载调整模块；
负载功率检测模块， 用于获取当前负载功率， 检测当前负载功率所在功率 段相较于前一时刻负载功率所在功率段是否为同一负载功率段；
负载调整模块， 用于当当前负载功率所在功率段相较于前一时刻负载功率 所在功率段为不同负载功率段时； 调整驱动频率和谐振参数。
优选地， 负载功率检测模块包括：
检测存储模块， 当前负载功率获取当前负载功率和功率阈值， 依据功率阀 值判断当前负载功率所在当前负载功率段， 并， 记录；
比较判断模块， 获取前一时刻负载功率所在功率段， 比较当前功率负载段 与前一时刻负载功率段是否为同一负载功率段。
优选地， 负载调整模块包括：
主电路控制模块和与之连接的调谐模块；
主电路控制模块， 用于接收负载功率检测模块发送的检测当前负载功率所 在功率段相较于前一时刻负载功率所在功率段是否为同一负载功率段的信号， 并依据信号驱动调谐模块；
调谐模块， 用于在主电路控制模块的驱动下， 调整接入电路的谐振电容矩 阵。
优选地， 还包括： 供电模块、 原边线圈模块和逆变电路模块；
负载调整模块一端连接供电模块， 另一端连接原边线圈模块；
逆变电路一端连接负载调整模块， 另一端连接原边线圈模块。
一种可调谐的无线电力传输系统， 包括： 由依次连接的副边线圈、 副边电 源模块和负载组成的可调谐的无线电力传输接收装置；
和， 如上述任意一项的可调谐的无线电力传输发射装置。
经由上述的技术方案可知， 与现有技术相比， 本发明公开的一种可调谐的 无线电力传输发射方法、 装置及系统， 包括： 获取当前负载功率， 检测当前负 载功率所在功率段相较于前一时刻负载功率所在功率段是否为同一负载功率 段； 当前负载功率所在功率段相较于前一时刻负载功率所在功率段为不同负载 功率段时， 调整驱动频率和谐振参数。 通过本发明公开的技术方案， 当负载位 于不同功率段时， 调整谐振参数和驱动频率， 避免发生失谐， 从而提高了无线 电力传输系统的传输效率。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述
中的附图仅仅是本发明的实施例， 对于本领域普通技术人员来讲， 在不付出创 造性劳动的前提下， 还可以根据提供的附图获得其他的附图。
图 1是本发明实施例一提供的一种可调谐的无线电力传输发射方法的流程 示意图；
图 2是本发明实施例三提供的一种可调谐的无线电力传输发射装置的结构 示意图；
图 3是本发明实施例三提供的一种可调谐的无线电力传输发射装置的结构 示意图；
图 4为本发明实施例五提供的一种可调谐的无线电力传输系统的装置示意 图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅是本发明一部分实施例， 而不是全 部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做出创造性 劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。 实施例一
本发明实施例一公开了一种可调谐的无线电力传输发射方法， 如图 1 所 示， 包括：
步骤 S101 , 获取当前负载功率；
步骤 S102， 检测当前负载功率所在功率段相较于前一时刻负载功率所在功 率段是否为同一负载功率段；
需要进行说明的是， 若检测当前负载功率所在功率段相较于前一时刻负载 功率所在功率段为同一负载功率段， 则保持当前的驱动功率和谐振参数。
在步骤 S 102 中， 检测当前负载功率所在功率段相较于前一时刻负载功率 所在功率段是否为同一负载功率段的具体过程包括：
首先， 获取当前负载功率和功率阈值， 依据功率阔值判断当前负载功率所 在当前负载功率段， 并记录；
其次， 获取前一时刻负载功率所在功率段， 比较当前功率负载段与前一时 刻负载功率段是否为同一负载功率段。
步骤 S103, 当当前负载功率所在功率段相较于前一时刻负载功率所在功率 段为不同负载功率段时， 调整驱动频率和谐振参数。
具体的， 调整驱动频率包括： 依据谐振频率调整驱动频率， 调整后的驱动 频率与谐振频率相同。
需要说明的是， 在谐振频率和驱动频率相同， 无线电力传输系统的效率最 高， 从而提高了无线电力传输系统的传输效率。
通过本发明实施例一公开的一种可调谐的无线电力传输发射方法， 当负载 位于不同功率段时， 调整谐振参数和驱动频率， 避免发生失谐， 从而提高了无 线电力传输的传输效率。 实施例二
为更清楚明白的阐述本发明实施例一公开的一种可调谐的无线电力传输发 射方法， 本发明实施例二中公幵的一种可调谐的无线电力传输发射方法就本发 明实施例一公开的技术方案进行举例说明。
负载功率范围为 0〜600瓦， 负载功率阈值为 200瓦和 400瓦， 则 0~199瓦
区间内的负载功率位于低负载功率段内， 200〜399 瓦区间内的负载功率位于中 负载功率段内， 400〜600瓦区间内的负载功率位于高负载功率段内。
检测当前负载功率为 99 瓦， 则当前负载功率所在功率段为低负载功率 段， 并记录。
若前一时刻负载功率为 128瓦， 则前一时刻负载功率所在功率段为低负载 功率段， 与当前负载功率所在负载功率段相同， 则保持当前驱动功率和调谐参 数。
若前一时刻负载功率为 375瓦， 则前一时刻负载功率所在功率段为高负载 功率段， 与当前负载功率所在负载功率段不同， 则调整驱动功率和调谐参数。
通过本发明实施例二公开的一种可调谐的无线电力传输发射方法， 当负载 位于不同功率段时， 同时调整谐振参数和驱动频率， 避免发生失谐， 从而提高 了无线电力传输的传输效率。 实施例三
本发明实施例一公开了一种可调谐的无线电力传输发射方法， 与之相对 应， 本发明实施例二公开了一种可调谐的无线电力传输发射装置， 如图 2 所 示， 包括： 负载功率检测模块 1和与功率检测模块 1连接的负载调整模块 2; 负载功率检测模块 1， 用于检测当前负载功率所在功率段相较于前一时刻 负载功率所在功率段是否为同一负载功率段；
其中， 功率检测模块 1包括：
检测存储模块 11， 当前负载功率获取当前负载功率和功率阈值， 依据功率 阀值判断当前负载功率所在当前负载功率段， 并， 记录；
比较判断模块 12， 获取前一时刻负载功率所在功率段， 比较当前功率负载
段与前一时刻负载功率段是否为同一负载功率段。
负载功率调整模块 2， 用于当前负载功率所在功率段相较于前一时刻负载 功率所在功率段为不同负载功率段时； 调整驱动频率和谐振参数。
其中， 负载功率调整模块 2包括：
主电路控制模块 21和与主电路控制模块 21连接的调谐模块 22;
主电路控制模块 21， 用于接收负载功率检测模块发送的检测当前负载功率 所在功率段相较于前一时刻负载功率所在功率段是否为同一负载功率段的信 号， 并依据信号驱动调谐模块 22。
具体的， 主电路控制模块 21为 MCU(Micro Controller Unit, 微控单元)。 在本发明实施例三中， 调谐模块 22， 用于在主电路控制模块的驱动下， 调 整接入电路的谐振电容矩阵。
当谐振频率和驱动频率相同时， 无线电力传输系统的效率最高， 从而提高 了无线电力传输系统的传输效率。
本发明实施例三公开的一种可调谐的无线电力传输发射装置， 针对不同负 载功率， 获取当前负载功率对应的谐振电容阵列， 依据谐振电容阵列调整当前 负载功率的谐振参数； 同时， 获取当前负载功率的谐振频率， 依据预设的谐振 频率和驱动频率的对应关系调整驱动频率， 使谐振频率和驱动频率一致， 从而 提高无线电力传输的传输效率。 实施例四
本发明实施例四公开的一种可调谐无线电力传输发射装置， 如图 3所示， 包括： 负载功率检测模块 1 和与功率检测模块 1 连接的负载调整模块 2还包 括， 供电模块 3、 原边线圈模块 4和逆变电路模块 5 ;
负载调整模块 2一端连接供电模块 3， 另一端连接原边线圈模块 4;
逆变电路模块 5—端连接负载调整模块 2， 另一端连接原边线圈模块 4。 在本发明实施例三中公开的可调谐的无线电力传输发射装置中， 当负载位 于不同功率段时， 调整谐振参数和驱动频率， 避免发生失谐， 从而提高了无线 电力传输的传输效率。 实施例五
在本发明实施例三公开的一种可调谐无线电力传输发射装置的基础上， 本 发明实施例四公开了一种可调谐无线电力传输系统， 如图 4所示， 包括： 负载 功率检测模块 1和与功率检测模块 1连接的负载调整模块 2还包括， 供电模块 3、 原边线圈模块 4、 逆变电路模块 5 ;
还包括： 依次连接的副边线圈模块: 6、 副边电源模块 7和负载 8。
需要说明的是， 在现有技术中， 当负载位于不同功率段时， 会产生反射阻 抗， 导致原边线圈模块 4和副边线圈模块 6的电感量变化， 引起谐振频率的变 化， 导致失谐， 降低无线电力传输系统的传输效率。
在本发明实施例五中公开的可调谐的无线电力传输系统， 在负载位于不同 功率段时， 调整谐振参数， 补偿导致原边线圈模块 4和副边线圈模块 6的电感 量变量， 避免发生失谐， 从而提高了无线电力传输系统的传输效率。 显然， 本领域技术人员应该明白， 上述的本发明的各模块或各步骤可以用 通用的计算装置来实现， 它们可以集中在单个计算装置上， 或者分布在多个计 算装置所组成的网络上， 可选地， 他们可以用计算机装置可执行的程序代码来 实现， 从而可以将它们存储在存储装置中由计算装置来执行， 或者将它们分别
制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作成单个集成电 路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件的结合。
以上仅为本发明的优选实施例， 并不用于限制本发明， 对于本领域技术人 员而言， 本发明可以有各种改动和变化。 凡在本发明的精神和原理之内所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。
Claims
1、 一种可调谐的无线电力传输发射方法， 其特征在于， 包括：
获取当前负载功率， 检测当前负载功率所在功率段相较于前一时刻负载功 率所在功率段是否为同一负载功率段；
当所述当前负载功率所在功率段相较于所述前一时刻负载功率所在功率段 为不同所述负载功率段时， 调整驱动频率和谐振参数。
2、 根据权利要求 1 所述的方法， 其特征在于， 所述检测当前负载功率所 在功率段相较于前一时刻负载功率所在功率段是否为同一所述负载功率段包 括：
获取所述当前负载功率和功率阈值， 依据所述功率阀值判断所述当前负载 功率所在当前负载功率段， 并记录；
获取所述前一时刻负载功率所在功率段， 比较所述当前功率负载段与前一 时刻负载功率段是否为同一所述负载功率段。
3、 根据权利要求 1 所述的方法， 其特征在于， 所述调整驱动频率包括： 依据谐振频率调整所述驱动频率， 调整后的所述驱动频率与所述谐振频率相 同。
4、 一种可调谐的无线电力传输发射装置， 其特征在于， 包括， 负载功率 检测模块和与所述功率检测电路连接的负载调整模块；
所述负载功率检测模块， 用于获取当前负载功率， 检测当前负载功率所在 功率段相较于前一时刻负载功率所在功率段是否为同一负载功率段；
所述负载调整模块， 用于当所述当前负载功率所在功率段相较于所述前一 时刻负载功率所在功率段为不同负载功率段时， 调整驱动频率和谐振参数。
5、 根据权利要求 4 所述的装置， 其特征在于， 所述负载功率检测模块包 括：
检测存储模块， 获取当前负载功率和功率阈值， 依据所述功率阀值判断当 前负载功率所在当前负载功率段， 并记录；
比较判断模块， 获取前一时刻负载功率所在功率段， 比较所述当前功率负 载段与前一时刻负载功率段是否为同一负载功率段。
6、 根据权利要求 4所述的装置， 其特征在于， 所述负载调整模块包括： 主电路控制模块和与之连接的调谐模块， 其中
所述主电路控制模块用于接收所述负载功率检测模块发送的检测当前负载 功率所在功率段相较于前一时刻负载功率所在功率段是否为同一负载功率段的 信号并依据所述信号驱动所述调谐模块， 并且
所述调谐模块用于在所述主电路控制模块的驱动下调整接入电路的谐振电 容矩阵。
7、 根据权利要求 4所述的装置， 其特征在于， 还包括：
供电模块、 原边线圈模块和逆变电路模块， 其中
所述负载调整模块一端连接所述供电模块， 另一端连接所述原边线圈模块， 所述逆变电路一端连接所述负载调整模块， 另一端连接所述原边线圈模 块。
8、 一种可调谐的无线电力传输系统， 其特征在于， 包括：
由依次连接的副边线圈、 副边电源模块和负载组成的可调谐的无线电力传 输接收装置； 以及
如权利要求 4~7中任意一项所述的可调谐的无线电力传输发射装置。
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