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公开(公告)号：US11190031B2
公开(公告)日：2021-11-30
申请号：US16796751
申请日：2020-02-20
申请人： Tesla, Inc.
发明人： Sandeep Narla
IPC分类号： H02J7/00 , H02J9/06 , H02S50/00 , H02J7/35 , H02S40/32 , H02S40/38 , H02H1/00 , H02J3/38 , H02S50/10 , H02H7/18 , H02H7/10
摘要： A battery pack for an energy generation system includes a cell array of conductively interconnected power cells configured to store and discharge energy, a direct current (DC)-to-DC converter coupled to the cell array and configured to receive power from the cell array during discharging of the cell array or to output power to the cell array during charging of the cell array, a pair of output terminals coupled to the DC-to-DC converter for coupling with an external device; and an are fault detection system coupled between the DC-to-DC converter and the pair of output terminals. The are fault detection system includes a first sensor for measuring power transmitted between the DC-to-DC converter and the pair of output terminals and a controller coupled to the first sensor and configured to disable the battery pack based on a measurement of the power transmitted between the DC-to-DC converter and the output terminals.
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公开(公告)号：US10897198B2
公开(公告)日：2021-01-19
申请号：US16128091
申请日：2018-09-11
发明人： Tao Chen , Xiao-Feng Zhou , Ching-Ji Liang
摘要： A voltage conversion apparatus includes a power supply circuit with a first switch, a voltage conversion circuit, and a protective circuit with a detection circuit. The first switch transmits a power to generate an input voltage. The voltage conversion circuit generates a first voltage. A second switch of the voltage conversion circuit receives the input voltage. A third switch of the voltage conversion circuit is coupled between the second switch and a ground terminal. The detection circuit generates a first control signal based on the first voltage, a second voltage that corresponds to the first voltage, and a reference voltage. When a voltage value of an error signal is less than the reference voltage, the detection circuit outputs the first control signal to turn off the first switch. The voltage value of the error signal corresponds to a voltage difference between the first voltage and the second voltage.
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公开(公告)号：US20210006151A1
公开(公告)日：2021-01-07
申请号：US17023710
申请日：2020-09-17
摘要： A CR snubber element includes a first resistance part, a first capacitance part, a second resistance part, and a second capacitance part. The first capacitance part is connected in series to the first resistance part. The second resistance part is connected in series to the first resistance part and the first capacitance part and the second capacitance part is connected in parallel to the second resistance part. The CR snubber element is configured such that the second resistance part is disconnected when the first capacitance part is short-circuited.
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公开(公告)号：US10778082B2
公开(公告)日：2020-09-15
申请号：US16003331
申请日：2018-06-08
发明人： Akshat Jain
IPC分类号： H05B6/06 , H05B6/12 , H02H3/20 , H02H7/10 , H02M1/32 , H03K17/082 , H05B6/10 , H02M1/08 , H02M7/04
摘要： Disclosed herein is a circuit including a transistor, with a resonant tank coupled between a DC supply node and a first conduction terminal of the transistor. A gate driver generates a gate drive signal for biasing a control terminal of the transistor to cause it to conduct current through the resonant tank. Control circuitry monitors a voltage across the transistor to determine that the transistor is an overvoltage condition if that voltage exceeds a threshold, and monitors a current through the transistor to determine that the transistor is an overcurrent condition if that current exceeds a threshold. If overvoltage is determined, the control circuitry causes the gate driver to pull up the gate drive signal. If overcurrent is determined, the control circuitry causes the gate driver to pull down the gate drive signal. If either overvoltage or overcurrent is present, a pulse width of the gate drive signal is reduced.
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公开(公告)号：US10464426B2
公开(公告)日：2019-11-05
申请号：US16070729
申请日：2016-12-22
发明人： Simon Betscher , Wacim Tazarine
IPC分类号： B60L3/04 , B60R21/017 , H01H89/00 , H02H7/10 , H01H39/00
摘要： High-voltage vehicle electrical system comprising a high-voltage battery terminal having a high-side terminal contact and a low-side terminal contact and a high-voltage output having a high-side output contact and a low-side output contact. For reliable isolation of a short-circuit current by using levitation, at least one series circuit arranged between the low-side terminal contact and the low-side output contact and consisting of a first switching relay and a pyrotechnic isolating device is provided.
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公开(公告)号：US20190146025A1
公开(公告)日：2019-05-16
申请号：US16091713
申请日：2017-04-03
摘要： A far-end power converter within a DC transmission network that includes a near-end power converter and at least one far-end power converter interconnected by portions of transmission medium. A method includes: establishing a linear time-invariant model of the transmission medium; determining a response characteristic of the time-invariant model; measuring an output operating property of the transmission medium at the near-end power converter; identifying one far-end power converter as being of interest; deriving a corresponding input operating property of the transmission medium at the far-end power converter of interest by applying an inverse of the response characteristic of the time-invariant model to the measured output operating property of the transmission medium at the near-end power converter; and comparing the derived input operating property with a fault characteristic to determine whether there is a fault on the far-end power converter of interest.
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7.发明申请公开(公告)号：US20190058391A1
公开(公告)日：2019-02-21
申请号：US16167451
申请日：2018-10-22
发明人： Yi-Min Shiu , Isaac Y. Chen
摘要： The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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公开(公告)号：US20180342893A1
公开(公告)日：2018-11-29
申请号：US15936336
申请日：2018-03-26
发明人： Ryuji YAMADA , Koji KAWAGUCHI
摘要： A power supply device including: a positive-side and negative-side capacitors sequentially connected between a positive-side and negative-side output-terminal; a positive-side and negative-side semiconductor switches sequentially connected between the positive-side and negative-side output-terminal in parallel to the positive-side and negative-side capacitors; and a plurality of rectifying circuits, each of which has an AC input-terminal and rectifies current flowing between the AC input-terminal and the positive-side and negative-side output-terminal is provided. Each of a plurality of rectifying circuits has a positive-side rectifier which is; connected between an AC input-terminal and a positive-side output-terminal; is able to control a forward conduction state from the AC input-terminal side toward the positive-side output-terminal side; and blocks reverse current, and a negative-side rectifier which: is connected between an AC input-terminal and a negative-side output-terminal; is able to control a forward conduction state from the negative-side output-terminal side toward the AC input-terminal side; and blocks reverse current.
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9.发明申请公开(公告)号：US20180159423A1
公开(公告)日：2018-06-07
申请号：US15874733
申请日：2018-01-18
发明人： Yi-Min Shiu , Isaac Y. Chen
CPC分类号： H02M1/32 , H02H7/10 , H02M3/156 , H02M3/33523 , H02M7/217 , H02M2001/0012 , H02M2001/0025
摘要： The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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公开(公告)号：US09973085B2
公开(公告)日：2018-05-15
申请号：US15218794
申请日：2016-07-25
发明人： Jeanpierre Vicquery , Emilio Volpi
CPC分类号： H02M3/158 , H02M1/08 , H02M1/32 , H02M2001/0025
摘要： A method and apparatus for controlling a converter are provided. In the method and apparatus, a converter is operated in accordance with a duty cycle and based on a difference between a feedback signal representing an output voltage of the converter and a reference signal. An overcurrent condition is detected in the converter. In response to detecting the overcurrent condition, the duty cycle used to operate the converter is limited and the reference signal is made to track the feedback signal to mitigate an output voltage overshoot at an end of the overcurrent condition.
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