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Fault detection device and method applied to high-tension battery contactor

A high-voltage battery, fault detection technology, applied in circuit breaker testing and other directions, can solve problems such as increasing fault detection time, prolonging the startup time of related equipment, etc., to achieve the effect of fast detection speed, excellent implementation effect, and simple structure setting.

Inactive Publication Date: 2016-11-23
QOROS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will greatly increase the time of fault detection, thereby greatly prolonging the start-up time of related equipment (such as a complete vehicle)

Method used

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  • Fault detection device and method applied to high-tension battery contactor
  • Fault detection device and method applied to high-tension battery contactor
  • Fault detection device and method applied to high-tension battery contactor

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Experimental program
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Embodiment approach

[0058] It should be noted that, according to the needs of practical applications, those skilled in the art may also connect the output terminals of the first detection circuit and the output terminal of the second detection circuit to the same fault judgment module respectively. In this embodiment, the two detection circuits respectively corresponding to the positive contactor S1 and the negative contactor S2 are connected to the same fault judgment module, and the fault judgment module receives signals from the two detection circuits respectively, and at the same time realizes positive contact Judgment and detection of faults in S1 and negative contactor S2.

[0059] image 3 A schematic block diagram of a detection circuit of a fault detection device applied to a high-voltage battery contactor according to the present invention is shown in an implementation manner. In this embodiment, the detection circuit includes: a signal conversion module, whose input terminal receives ...

Embodiment 1

[0063] Figure 5 It shows the circuit diagram of the detection circuit in the first embodiment of the fault detection device applied to the high-voltage battery contactor according to the present invention. Such as Figure 5 As shown, in this embodiment, the detection circuit includes a first detection circuit for detecting the positive contactor S1 and a second detection circuit for detecting the negative contactor S2. The first detection circuit includes: a first photocoupler T1, a voltage dividing resistor R1, a voltage dividing resistor R3 and a resistor R5; wherein, the positive input terminal of the first photocoupler T1 is connected to one end of the first protection module through the voltage dividing resistor R1 connected, and with the positive contactor S1 as well as the load R L One end of the first optocoupler T1 is connected to the negative input terminal of the first protection module through the voltage dividing resistor R3, and is connected to the negative po...

Embodiment 2

[0072] Figure 6 It shows the circuit diagram of the detection circuit in the second embodiment of the fault detection device applied to the high-voltage battery contactor according to the present invention. Such as Figure 6 As shown, in this embodiment, the first detection circuit includes: a first photocoupler T1, a voltage dividing resistor R1, a voltage dividing resistor R3 and a resistor R5; wherein, the positive input terminal of the first photocoupler T1 is divided by Resistor R1 is connected to one end of the first protection module, and is connected to positive contactor S1 and load R L One end of the first optocoupler T1 is connected to the negative input terminal of the first protection module through the voltage dividing resistor R3, and is connected to the negative pole of the high-voltage battery B; the collector of the phototransistor of the first optocoupler T1 As the first output end, it is connected to the positive pole of the low-voltage power supply +5V,...

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Abstract

The present invention discloses a fault detection device and method applied to a high-tension battery contactor. The device comprises: a detection circuit having an input end and an output end, wherein the input end of the detection circuit is connected with the contactor and is configured to convert the high-tension signals formed by the current flowing the contactor to corresponding detection signals and output the detection signals from the output end of the detection circuit; and a fault determination module connected with the output end of the detection circuit and configured to detect whether the state jump happens or not when the contactor receives an opening or closing operation instruction, determine whether the contactor has faults or not and emit the fault state signals. Correspondingly, the present invention further discloses a fault detection method of a high-tension battery contactor on the device mentioned above. The fault detection device and method applied to a high-tension battery contactor can rapidly and reliably detect the faults of the high-tension battery contactor with low cost.

Description

technical field [0001] The invention relates to a fault detection device and method for electrical components, in particular to a fault detection device and method for a contactor of a high-voltage battery. Background technique [0002] Passenger vehicles often include batteries for operating the vehicle's electrical system and drivetrain. For example, in a hybrid electric vehicle (“HEV”), plug-in hybrid electric vehicle (“PHEV”), fuel cell electric vehicle (“FCEV”), or pure electric vehicle (“EV”), the energy storage system ( That is, the high-voltage battery) is used to provide power to the electric or power transmission components of the vehicle. The energy storage system stores high voltage electrical energy that can be delivered to vehicle systems via a high voltage bus having positive and negative conductors or rails. The energy storage system may be selectively coupled to the positive and negative conductors or rails via one or more selectively switched contactors. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
Inventor 王刚彦斯·贝肯
Owner QOROS
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