Fault detecting apparatus and method for electric vehicle switch
A detection device, electric vehicle technology, applied in circuit breaker testing and other directions, can solve the problems of high temperature welding, rising cost, and complicated relay switch circuit design
Inactive Publication Date: 2016-03-23
KYMCO
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, because the relay switch (Relay) of the above-mentioned overload prevention device is a mechanical structure, after long-term use, the closed circuit may accidentally become an open circuit due to carbon deposits on the contacts, or the contact resistance of the contacts is too large, resulting in high-temperature welding due to excessive current. Make the relay switch operate abnormally
In the prior art, the general solution is to add a group of auxiliary contacts linked with the main contacts of the relay switch to the relay switch to judge abnormal operation, but this will change the circuit design of the relay switch. It is complicated, and the space occupied by the circuit increases, which leads to an increase in cost
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] In order to make the above and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be exemplified below in detail with reference to the accompanying drawings. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.
[0021] Please refer to figure 1 As shown, the fault detection device 100 of an electric vehicle switch according to an embodiment of the present invention is used as a fault detection device for a switch of a power supply device mounted on an...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a fault detecting apparatus and method for an electric vehicle switch. The fault detecting apparatus comprises a power supplying unit, a power switch, a detecting unit and a control unit. The detecting unit includes a first feedback circuit and a second feedback circuit. The first feedback circuit has a first feedback voltage. The second feedback circuit has a second feedback voltage. The control unit determines whether the power switch is abnormal by utilizing a voltage different between the first feedback voltage and the second feedback voltage.
Description
technical field [0001] The invention relates to a fault detection device and a detection method, in particular to a fault detection device and a detection method of an electric vehicle switch. Background technique [0002] Currently, an electric vehicle is equipped with an electric motor (for example, a permanent magnet type brushless motor) required for rotationally driving an axle, and a power supply mechanism that receives electric power from a battery to drive the electric motor. The power supply unit can use the electric motor as a generator when the electric vehicle is coasting or traveling downhill, so that the generated power can be used to give the battery a regenerative function for reverse charging. [0003] In addition, the protection circuit of the power supply unit of the electric vehicle is loaded on the power supply unit of the electric vehicle by using an overload prevention device, and the voltage state of the power supply unit of the electric vehicle is mo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
Inventor 纪顺得黄宏耀
Owner KYMCO