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41. 发明申请

WO2021165649A1 RECONFIGURABLE BATTERY PACK 审中-公开
公开(公告)号：WO2021165649A1
公开(公告)日：2021-08-26
申请号：PCT/GB2021/050319
申请日：2021-02-11
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： H01M10/42 , H01M10/44 , H02J7/00 , H01M10/48
摘要： A battery pack comprising a voltage bus, a first sub-pack and a second sub-pack. The second sub-pack comprises a plurality of modules. The battery pack is configurable into a first configuration in which the first sub-pack and the second sub-pack are connected in parallel across the voltage bus and the modules are connected in parallel within the second sub-pack. The battery pack is also configurable into a second configuration in which the first sub-pack and the second sub-pack are connected in series across the voltage bus and the modules are connected in parallel within the second sub-pack. The battery pack then switches between the first configuration and the second configuration when a voltage of the battery pack transits a first threshold.

42. 发明申请

WO2021130464A1 POWER SUPPLY UNIT 审中-公开
公开(公告)号：WO2021130464A1
公开(公告)日：2021-07-01
申请号：PCT/GB2020/052571
申请日：2020-10-14
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： H02J7/00 , H02M3/335 , H02J7/0014 , H02J7/0016 , H02M1/0048 , H02M1/0074 , H02M3/33569 , H02M3/337
摘要： A power supply unit comprising a first battery unit and a second battery unit connected in series, a transformer having a tapped primary winding, a first switch connected between the positive terminal of the first battery unit and a first end of the primary winding, a second switch connected between the negative terminal of the second battery unit and a second end of the primary winding, and a controller for controlling the first switch and the second switch. The tapped terminal of the primary winding is connected to a node located between the two battery units. The power supply unit further comprises a first return path that provides unidirectional current flow from a first node to a second node, and a second return path that provides unidirectional current flow from a third node to a fourth node. The first node is located between the negative terminal of the second battery unit and the second switch, the second node is located between the first switch and the first end of the primary winding, the third node is located between the second end of the primary winding and the second switch, and the fourth node is located between the positive terminal of the first battery unit and the first switch.

43. 发明申请

WO2021074575A1 BATTERY PACK 审中-公开
公开(公告)号：WO2021074575A1
公开(公告)日：2021-04-22
申请号：PCT/GB2020/052228
申请日：2020-09-16
申请人： DYSON TECHNOLOGY LIMITED
发明人： DAYNES, Nicholas , GASKELL, Christopher , GREETHAM, Stephen
IPC分类号： H01M2/10 , H01M2/20
摘要： A battery pack (10) having a plurality of adjacent battery modules (12a-h) is described. Each battery module (12a-h) has a support (31) and a plurality of cell groups (13a-d) mounted on the support (31). Each cell group (13a-d) has a plurality of battery cells (14). Each cell group (13a-d) in a battery module (12a-h) is electrically connected to a corresponding cell group (13a-d) of an adjacent battery module (12a-h) to form a plurality of aggregate current paths in the battery pack (10).

44. 发明申请

WO2018096341A1 BATTERY SYSTEM 审中-公开
公开(公告)号：WO2018096341A1
公开(公告)日：2018-05-31
申请号：PCT/GB2017/053529
申请日：2017-11-23
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： H02J7/00
摘要： A battery system comprising positive and negative charge-discharge terminals, first and second batteries, first and second unidirectional switches, and a bridging switch. The first battery and the first unidirectional switch are connected in series across the charge- discharge terminals such that the first unidirectional switch provides a conductive path from the positive charge-discharge terminal to a positive terminal of the first battery. The second battery and the second unidirectional switch are connected in series across the charge-discharge terminals such that the second unidirectional switch provides a conductive path from the negative terminal of the second battery to the negative charge- discharge terminal. The batteries and the bridging switch are connected in series across the charge-discharge terminals, with the bridging switch being located between the positive terminal of the first battery and the negative terminal of the second battery. The switches are configurable between a first configuration in which the first and second unidirectional switches are closed and the bridging switch is open, and a second configuration in which the first and second unidirectional switches are open and the bridging switch is closed. In the first configuration, the batteries are connected in parallel across the charge-discharge terminals, whilst in the second configuration the batteries are connected in series.

45. 发明申请

WO2015052497A1 AC/AC BOOST CONVERTER 审中-公开
标题翻译： AC / AC升压转换器
公开(公告)号：WO2015052497A1
公开(公告)日：2015-04-16
申请号：PCT/GB2014/053010
申请日：2014-10-07
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen , CLOTHIER, Andrew
IPC分类号： H02M5/293
CPC分类号： H02P6/14 , H02M5/293
摘要： An AC/AC boost converter comprising input terminals, output terminals, an inductor, a bridge arm comprising a pair of bi-directional switches, a capacitor and a control circuit for controlling the switches. The bridge arm and the capacitor are connected in parallel across the output terminals. The inductor has a first end connected to one of the input terminals and a second end connected to one of an end and a junction of the bridge arm, the junction being located between the two switches. Another of the input terminals is then connected to the other of the end and the junction of the bridge arm. An AC power supply supplies an AC input voltage at the input terminals, and the control circuit controls the switches of the bridge arm such that an AC output voltage is supplied at the output terminals, the AC output voltage being greater than the AC input voltage.
摘要翻译：一种AC / AC升压转换器，包括输入端子，输出端子，电感器，包括一对双向开关的电桥臂，用于控制开关的电容器和控制电路。桥臂和电容器并联连接在输出端子上。电感器具有连接到一个输入端子的第一端和连接到桥臂的端部和接头之一的第二端，该接合部位于两个开关之间。另一个输入端子然后连接到桥臂的端部和接头中的另一个。 AC电源在输入端提供交流输入电压，控制电路控制桥臂的开关，使输出端提供交流输出电压，交流输出电压大于交流输入电压。

46. 发明申请

WO2022123202A1 BUCK-BOOST CONVERTER 审中-公开
公开(公告)号：WO2022123202A1
公开(公告)日：2022-06-16
申请号：PCT/GB2021/052952
申请日：2021-11-15
申请人： DYSON TECHNOLOGY LIMITED [GB]/[GB]
发明人： GREETHAM, Stephen
IPC分类号： H02M7/217 , H02M3/158
摘要： A buck-boost converter is described that comprises input terminals, output terminals, a pair of first switches; a pair of second switches; a pair of third switches or diodes; an inductor, a capacitor, and a controller for controlling the switches. Each of the first switches is connected between a respective input terminal and a first terminal of the inductor, and each of the second switches is connected between a respective input terminal and a second terminal of the inductor. Each of the third switches or diodes is connected between a respective input terminal and a second terminal of the capacitor. A first terminal of the capacitor is connected to the second terminal of the inductor and an output terminal, and the second terminal of the capacitor is connected to another output terminal.

47. 发明申请

WO2022117992A1 DRIVE CIRCUIT FOR A BRUSHLESS MOTOR 审中-公开
公开(公告)号：WO2022117992A1
公开(公告)日：2022-06-09
申请号：PCT/GB2021/052951
申请日：2021-11-15
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen , HORVAT, Mate
IPC分类号： H02P6/06 , H02P6/08 , H02P6/28 , H02M5/32
摘要： A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side switch and 5 a low-side switch. Each switch comprises four states: (i) ON in which the switch is conductive in both a first direction and a second direction, (ii) D1 in which the switch is conductive in the first direction only, (iii) D2 in which the switch is conductive in the second direction only, and (iv) OFF in which the switch is non-conductive in both the first direction and the second direction. The controller controls the states of the 10 switches to configure the converter in one of a plurality of configurations.

48. 发明申请

WO2022117989A1 GATE DRIVER 审中-公开
公开(公告)号：WO2022117989A1
公开(公告)日：2022-06-09
申请号：PCT/GB2021/052948
申请日：2021-11-15
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： H03K17/082 , H02M1/08 , H02M1/36 , H02M1/32 , H02M5/297
摘要： A gate driver is described for driving switches. The gate driver comprises an input for receiving a signal indicative of a polarity of a voltage or current, and outputs for outputting gate signals for driving the switches. In response to a fault condition, the gate driver generates gate signals at the outputs that depend on the polarity of the voltage or current.

49. 发明申请

WO2022003319A1 A FOODSTUFF RECEPTACLE 审中-公开
公开(公告)号：WO2022003319A1
公开(公告)日：2022-01-06
申请号：PCT/GB2021/051515
申请日：2021-06-16
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： A47J43/046 , H05B3/68 , H05B6/12 , A47J43/0465 , H05B6/1209
摘要： A foodstuff receptacle has a first salient magnetic assembly configured to interact with a second salient magnetic assembly of a foodstuff preparation device when the foodstuff receptacle is placed on the foodstuff preparation device to inhibit motion of the foodstuff receptacle relative to the foodstuff preparation device.

50. 发明申请

WO2022003316A1 RESISTIVE LIQUID HEATER 审中-公开
公开(公告)号：WO2022003316A1
公开(公告)日：2022-01-06
申请号：PCT/GB2021/051512
申请日：2021-06-16
申请人： DYSON TECHNOLOGY LIMITED
发明人： GREETHAM, Stephen
IPC分类号： H05B3/60 , F24H1/10 , F24H1/106 , H05B2203/021
摘要： A liquid heater is described comprising a chamber for receiving a liquid, a pair of electrodes located within the chamber for applying electric current to the liquid, input terminals for connection to a power supply, a plurality of bi-directional switches for connecting the electrodes to the input terminals, and a control unit for controlling the switches. The power supply supplies an alternating voltage having a frequency no greater than 60 Hz, and the control unit controls the switches such that the electrodes are energised with an alternating voltage having a frequency no less than 150 kHz.

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