公开(公告)号：US20080024090A1

公开(公告)日：2008-01-31

申请号：US11836946

申请日：2007-08-10

申请人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

发明人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

IPC分类号： H02J7/00

CPC分类号： H02J7/0086 ,  H02J7/0077 ,  Y02B40/90 ,  Y02E70/40

摘要： A rapid charging circuit for a lithium ion battery. The battery charger in accordance with the present invention compensates for the voltage drops across the various resistance elements in the battery circuit by setting the charging voltage to a level to compensate for the initial resistance of the series resistances in the circuit and an additional resistance selected to take into account the anticipated increase in resistance of the various circuit elements over time. The battery charger in accordance with the present invention periodically monitors the open-circuit voltage of the battery cell and reduces the charging voltage to when the battery cell voltage reaches the optimal value. Thus, during a constant current charging mode, the battery cell is driven at a relatively optimal charging current to reduce the charging time. As such, the system is able to optimize the charging current supplied to a battery cell during a constant current mode of operation while compensating for circuit elements whose resistance may vary over time due to temperature or other factors, such as corrosion, while at the same time avoiding exceeding the maximum recommended voltage for the battery cell.

公开(公告)号：US20050275381A1

公开(公告)日：2005-12-15

申请号：US10897285

申请日：2004-07-22

申请人： Huang Guang ,  Xia Jie ,  Li Hua ,  Robert Wentink

发明人： Huang Guang ,  Xia Jie ,  Li Hua ,  Robert Wentink

IPC分类号： H02J7/00 ,  H02J7/02 ,  H02J7/14

CPC分类号： H02J7/0006 ,  H02J7/0052 ,  H02J7/022

摘要： A battery charger with a discrete switched regulator provides relatively high efficiency and relatively low cost. Unlike known battery chargers which incorporate switched regulator ICs, the battery charger in accordance with the present invention utilizes the microprocessor for a dual function. In particular, the microprocessor not only controls the charging characteristics of the battery charging circuit but also directly controls the power output of the battery charger by direct control of the discrete switched regulator circuit. By using a discrete switched regulator circuit and redefining the role of the microprocessor, the battery charger in accordance with the present invention is relatively less expensive than known battery chargers which incorporate switched regulator ICs.

摘要翻译： 具有分立开关稳压器的电池充电器提供相对较高的效率和相对较低的成本。 与具有开关式调节器IC的已知电池充电器不同，根据本发明的电池充电器利用微处理器实现双重功能。 特别地，微处理器不仅控制电池充电电路的充电特性，而且还通过直接控制离散开关调节器电路来直接控制电池充电器的功率输出。 通过使用分立的开关调节器电路并重新定义微处理器的作用，根据本发明的电池充电器相对于已知的具有开关稳压器IC的电池充电器相对较便宜。

公开(公告)号：US20080012533A1

公开(公告)日：2008-01-17

申请号：US11836961

申请日：2007-08-10

申请人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

发明人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

IPC分类号： H02J7/00

CPC分类号： H02J7/0086 ,  H02J7/0077 ,  Y02B40/90 ,  Y02E70/40

摘要： A rapid charging circuit for a lithium ion battery. The battery charger in accordance with the present invention compensates for the voltage drops across the various resistance elements in the battery circuit by setting the charging voltage to a level to compensate for the initial resistance of the series resistances in the circuit and an additional resistance selected to take into account the anticipated increase in resistance of the various circuit elements over time. The battery charger in accordance with the present invention periodically monitors the open-circuit voltage of the battery cell and reduces the charging voltage to when the battery cell voltage reaches the optimal value. Thus, during a constant current charging mode, the battery cell is driven at a relatively optimal charging current to reduce the charging time. As such, the system is able to optimize the charging current supplied to a battery cell during a constant current mode of operation while compensating for circuit elements whose resistance may vary over time due to temperature or other factors, such as corrosion, while at the same time avoiding exceeding the maximum recommended voltage for the battery cell.

摘要翻译： 一种用于锂离子电池的快速充电电路。 根据本发明的电池充电器通过将充电电压设置为补偿电路中的串联电阻的初始电阻的电平来补偿电池电路中的各种电阻元件上的电压降，并且将额外的电阻选择为 考虑到随着时间的推移，各种电路元件的电阻的预期增加。 根据本发明的电池充电器周期性地监测电池单元的开路电压，并且当电池电池电压达到最佳值时将充电电压降低。 因此，在恒定电流充电模式期间，以相对最佳的充电电流驱动电池单元以减少充电时间。 因此，该系统能够在恒定电流工作模式期间优化提供给电池单体的充电电流，同时补偿电阻可能由于温度或其他因素（例如腐蚀）而随时间而变化的电路元件，同时 时间避免超过电池单元的最大推荐电压。

公开(公告)号：US20070075682A1

公开(公告)日：2007-04-05

申请号：US11241718

申请日：2005-09-30

申请人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

发明人： Huang Guang ,  Robert Wentink ,  Xia Jie ,  Li Hua

IPC分类号： H02J7/00

CPC分类号： H02J7/0086 ,  H02J7/0077 ,  Y02B40/90 ,  Y02E70/40

摘要： A rapid charging circuit for a lithium ion battery. The battery charger in accordance with the present invention compensates for the voltage drops across the various resistance elements in the battery circuit by setting the charging voltage to a level to compensate for the initial resistance of the series resistances in the circuit and an additional resistance selected to take into account the anticipated increase in resistance of the various circuit elements over time. The battery charger in accordance with the present invention periodically monitors the open-circuit voltage of the battery cell and reduces the charging voltage to when the battery cell voltage reaches the optimal value. Thus, during a constant current charging mode, the battery cell is driven at a relatively optimal charging current to reduce the charging time. As such, the system is able to optimize the charging current supplied to a battery cell during a constant current mode of operation while compensating for circuit elements whose resistance may vary over time due to temperature or other factors, such as corrosion, while at the same time avoiding exceeding the maximum recommended voltage for the battery cell.

摘要翻译： 一种用于锂离子电池的快速充电电路。 根据本发明的电池充电器通过将充电电压设置为补偿电路中的串联电阻的初始电阻的电平来补偿电池电路中的各种电阻元件上的电压降，并且将额外的电阻选择为 考虑到随着时间的推移，各种电路元件的电阻的预期增加。 根据本发明的电池充电器周期性地监测电池单元的开路电压，并且当电池电池电压达到最佳值时将充电电压降低。 因此，在恒定电流充电模式期间，以相对最佳的充电电流驱动电池单元以减少充电时间。 因此，该系统能够在恒定电流工作模式期间优化提供给电池单体的充电电流，同时补偿电阻可能由于温度或其他因素（例如腐蚀）而随时间而变化的电路元件，同时 时间避免超过电池单元的最大推荐电压。

公开(公告)号：US20070268002A1

公开(公告)日：2007-11-22

申请号：US11637336

申请日：2006-12-12

申请人： Huang Guang ,  Jian Liu ,  Li Hua ,  Brian Gaza ,  Robert Wentink

发明人： Huang Guang ,  Jian Liu ,  Li Hua ,  Brian Gaza ,  Robert Wentink

IPC分类号： H02P9/00

CPC分类号： F03D7/0244 ,  F03D7/0272 ,  F05B2270/1011 ,  F05B2270/304 ,  F05B2270/327 ,  H02P9/006 ,  H02P9/06 ,  H02P9/305 ,  H02P2101/15 ,  Y02E10/723

摘要： A protection circuit for a wind turbine generator that includes a PWM Brake that works in conjunction with known Brake Relays is disclosed. The Brake Relay is used to short the generator output terminals at a first threshold voltage. The PWM Brake includes one or more switching devices, coupled across the generator output. The PWM Brake is under the control of a PWM Brake Control Circuit which actuates the PWM Brake at a second threshold voltage that is relatively lower than the first threshold voltage. In accordance with an important aspect of the invention, the PWM Brake Control Circuit includes a novel speed sensing circuit for providing a signal representative of the speed of the turbine generator The novel speed sensing circuit eliminates the need to mount a speed sensor on the pole top mounted turbine generator. As such, the need for adding cabling from the pole top mounted wind turbine generator is eliminated. The novel speed sensing circuit provides a signal representative of the rotational speed of the turbine generator based upon the duty cycle of a pulse width modulated (PWM) signal that is derived from the drive signal developed by the PWM Control Circuit. This signal is used to alternatively actuate and close the Brake Relay to minimize actuation of the centrifugal switch.

摘要翻译： 公开了一种用于风力涡轮发电机的保护电路，其包括与已知的制动继电器相结合的PWM制动器。 制动继电器用于将发电机输出端子以第一阈值电压进行短路。 PWM制动器包括耦合在发电机输出端的一个或多个开关装置。 PWM制动器在PWM制动控制电路的控制下，该PWM制动控制电路以相对低于第一阈值电压的第二阈值电压来致动PWM制动。 根据本发明的一个重要方面，PWM制动控制电路包括一个新的速度检测电路，用于提供代表涡轮发电机转速的信号。新的速度检测电路消除了在极顶上安装速度传感器的需要 安装的涡轮发电机。 因此，消除了从极顶安装的风力涡轮发电机添加电缆的需要。 基于由PWM控制电路开发的驱动信号导出的脉冲宽度调制（PWM）信号的占空比，新颖的速度感测电路提供代表涡轮发电机转速的信号。 该信号用于交替地致动和关闭制动继电器以使离心开关的致动最小化。

公开(公告)号：US20050275373A1

公开(公告)日：2005-12-15

申请号：US10863920

申请日：2004-06-09

申请人： Huang Guang ,  Li Hua ,  Robert Wentink

发明人： Huang Guang ,  Li Hua ,  Robert Wentink

IPC分类号： H02J7/00 ,  H02J7/02 ,  H02J7/14

CPC分类号： H02J7/0013 ,  H02J7/00 ,  H02J7/0006 ,  H02J7/022

摘要： A multiple cell battery charger configured with a parallel topography is disclosed. In accordance with an important aspect of the invention, the multiple cell battery charger requires fewer active components than known battery chargers while at the same time protecting multiple battery cells from overcharge and discharge. The multiple cell battery charger in accordance with the present invention is a constant voltage battery charger that includes a regulator for providing a regulated source of direct current (DC) voltage to the battery cells to be charged. In accordance with the present invention, each battery cell is connected in series with a switching device, such as a field effect transistor (FET) and optionally a current sensing device. In a charging mode, the serially connected FET conducts, thus enabling the battery cell to be charged. The battery voltage is sensed by a microprocessor. When the microprocessor senses that the battery cell is fully charged, the FET is turned off, thus disconnecting the battery cell from the circuit. Since the battery cell is disconnected from the circuit, no additional active devices are required to protect the battery cell from discharge. As such, a single active device per cell, such as the FET, provides multiple functions without requiring additional devices. Accordingly, the battery charger in accordance with the present invention utilizes fewer active components than known battery chargers and is thus much less be expensive to manufacture.

摘要翻译： 公开了一种配置有平行形貌的多单元电池充电器。 根据本发明的重要方面，多节电池充电器比已知的电池充电器需要更少的有源元件，同时保护多个电池单元免于过充电和放电。 根据本发明的多节电池充电器是一种恒压电池充电器，其包括用于向要充电的电池单元提供稳压的直流（DC）电压源的调节器。 根据本发明，每个电池单元与诸如场效应晶体管（FET）和可选的电流感测装置的开关装置串联连接。 在充电模式中，串联的FET导通，从而使得电池单元被充电。 电池电压由微处理器感测。 当微处理器感测到电池单体完全充电时，FET被关闭，从而将电池单元从电路断开。 由于电池单元与电路断开连接，不需要额外的有源器件来保护电池单元免于放电。 因此，每个单元（例如FET）的单个有源器件提供多种功能，而不需要额外的器件。 因此，根据本发明的电池充电器比已知的电池充电器使用更少的有源元件，因此制造成本较低。

公开(公告)号：US20050275369A1

公开(公告)日：2005-12-15

申请号：US10896654

申请日：2004-07-22

申请人： Huang Guang ,  Li Hua ,  Robert Wentink

发明人： Huang Guang ,  Li Hua ,  Robert Wentink

IPC分类号： H02J7/00 ,  H02J7/02 ,  H02J7/14

CPC分类号： H02J7/0006 ,  H02J7/022

摘要： A battery charger that is configured to charge different size battery cells and automatically determine the size of the battery cell to be charged. The battery charger includes at least one charging circuit and a microprocessor. The charging circuit, in turn, includes a serially connected switching device and a current sensing resistor and a first and second pair of battery terminals that are configured to receive different size battery cells. The first pair of battery terminals is serially connected to a size detection resistor. The serial combination of the first pair of battery terminals and the size detection resistor is connected in parallel with a second pair of battery terminals. The parallel combination is connected in series with the charging circuit. At a nominal charging current, the voltage at the battery terminals will vary by the voltage drop across the size detection resistor. Accordingly, by measuring the voltage at the battery terminals, the system can determine which pair of battery terminals is connected to a battery cell. By configuring the first pair of battery terminals to receive a first battery cell size, for example, size AAA, and serially coupling the first pair of battery terminals to the size detection resistor, and configuring the second pair of battery terminals to receive a second size of battery cell, for example, size AA, the battery cell size can easily be detected electronically by measuring the voltage at the battery terminals.

摘要翻译： 配置为对不同尺寸的电池单元充电并自动确定要充电的电池单元的尺寸的电池充电器。 电池充电器包括至少一个充电电路和微处理器。 充电电路又包括串联连接的开关装置和电流检测电阻器以及配置成接收不同尺寸的电池单元的第一和第二对电池端子。 第一对电池端子串联连接到尺寸检测电阻。 第一对电池端子和尺寸检测电阻器的串联组合与第二对电池端子并联连接。 并联组合与充电电路串联连接。 在额定充电电流下，电池端子上的电压将随着尺寸检测电阻的电压降而变化。 因此，通过测量电池端子的电压，系统可以确定哪一对电池端子连接到电池单元。 通过配置第一对电池端子以接收第一电池单元尺寸，例如尺寸AAA，并且将第一对电池端子串联耦合到尺寸检测电阻器，以及配置第二对电池端子以接收第二尺寸 的电池单元，例如尺寸AA，可以通过测量电池端子处的电压来容易地以电子方式检测电池单元尺寸。

公开(公告)号：US20070216163A1

公开(公告)日：2007-09-20

申请号：US11377251

申请日：2006-03-16

申请人： Huang Guang ,  Liu Fei ,  Brian Gaza ,  Robert Wentink

发明人： Huang Guang ,  Liu Fei ,  Brian Gaza ,  Robert Wentink

IPC分类号： F03D9/00 ,  H02P9/04

CPC分类号： F03D7/0272 ,  F05B2220/7062 ,  F05B2270/1011 ,  H02P9/04 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725

摘要： An over speed control circuit for a wind turbine generator is disclosed which optimizes the time that the wind turbine generator is operational and thus maximizes the power output over time. The over speed control circuit forms a closed feedback loop which periodically measures the output voltage of the wind turbine generator in order to regulate its speed by electronically controlling the load on the generator. The over speed control circuit in accordance with the present invention is adapted to work in conjunction with known over speed protection lock out relays. More particularly, the over speed control circuit causes a short circuit to be placed the generator terminals when the generator voltage reaches a threshold value, relatively less than the threshold value used to trigger the over speed lockout relay. As such, the over speed control circuit minimizes the operation of the lockout relay, thereby maximizing the power output of the generator over time making such wind turbine generator systems much more practical as a renewable energy source.

摘要翻译： 公开了一种用于风力涡轮发电机的超速控制电路，其优化了风力涡轮发电机运行的时间，从而使功率输出随着时间的推移最大化。 过速控制电路形成闭环反馈回路，其周期性地测量风力涡轮发电机的输出电压，以通过电子控制发电机上的负载来调节其速度。 根据本发明的超速控制电路适用于已知的超速保护锁定继电器的工作。 更具体地说，当发电机电压达到阈值时，过速控制电路使发电机端子放置短路，相对小于用于触发过速停机继电器的阈值。 因此，超速控制电路将闭锁继电器的操作最小化，从而使发电机的功率输出随时间最大化，使得这种风力涡轮发电机系统比可再生能源更实用。

公开(公告)号：US20050275374A1

公开(公告)日：2005-12-15

申请号：US10897274

申请日：2004-07-22

申请人： Huang Guang ,  Li Wen Hua ,  Robert Wentink

发明人： Huang Guang ,  Li Wen Hua ,  Robert Wentink

IPC分类号： H02J7/00 ,  H02J7/02 ,  H02J7/14

CPC分类号： H02J7/0006 ,  H02J7/0018 ,  H02J7/022

摘要： A multiple cell battery charger configured in a parallel topology provides constant current charging. The multiple cell battery charger requires fewer active components than known serial battery chargers, while at the same time preventing a thermal runaway condition. The multiple cell battery charger in accordance with the present invention is a constant voltage constant current battery charger that includes a regulator for providing a regulated source of direct current (DC) voltage to the battery cells to be charged. The battery charger also includes a pair of battery terminals coupled in series with a switching device, such as a field effect transistor (FET) and optionally a battery cell charging current sensing element, forming a charging circuit. In a charging mode, the serially connected FET conducts, thus enabling the battery cell to be charged. The FETs are controlled by a microprocessor that monitors the battery cell voltage and cell charging current and optionally the cell temperature. The microprocessor periodically adjusts the charging current of each cell to maintain a relatively constant current. When the microprocessor senses a voltage or temperature indicative that the battery cell is fully charged, the FET is turned off, thus disconnecting the battery cell from the circuit. Accordingly, the battery charger in accordance with the present invention utilizes fewer active components and is thus less expensive to manufacture than known battery chargers configured with a serial topography while at the same time providing constant current charging to avoid a thermal runaway condition.

摘要翻译： 以并联拓扑结构配置的多节电池充电器提供恒流充电。 多节电池充电器比已知的串联电池充电器需要更少的有源元件，同时防止热失控状况。 根据本发明的多节电池充电器是恒压恒流电池充电器，其包括用于向要充电的电池单元提供稳压的直流（DC）电压源的调节器。 电池充电器还包括与诸如场效应晶体管（FET）和可选地电池单元充电电流感测元件的开关装置串联耦合的一对电池端子，形成充电电路。 在充电模式中，串联的FET导通，从而使得电池单元被充电。 FET由微处理器控制，微处理器监视电池电池电压和电池充电电流以及可选的电池温度。 微处理器周期性地调节每个单元的充电电流以保持相对恒定的电流。 当微处理器感测到指示电池单元完全充电的电压或温度时，FET被关闭，从而将电池单元与电路断开。 因此，根据本发明的电池充电器利用较少的有源元件，因此制造成本比已配置有串联形貌的电池充电器便宜，同时提供恒定电流充电以避免热失控状况。