Measurer for insulation resistance of direct-current high-voltage system for vehicle and method
A technology of measuring device and insulation resistance, applied in the direction of measuring device, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve problems such as failure to respond to power battery insulation faults, disconnection of measurement circuits, and influence of vehicle insulation.
Inactive Publication Date: 2012-07-04
河北深海电器有限公司
View PDF10 Cites 34 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The existing technology has the following problems: it cannot respond to the insulation fault between the interior of the power battery and the electric chassis, and is also affected by the withstand voltage of the measuring switch device. When performing a withstand voltage test on the entire vehicle, the measurement circuit must be disconnected
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
[0031] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0032] A device and method for measuring the insulation resistance of a DC high-voltage system for a vehicle according to the present invention is to measure a comprehensive insulation resistance of the high-voltage system to the ground by injecting a measurement signal, and can respond to any part of the high-voltage system. Insulation failure (including insulation failure between the inside of the power battery and the electric chassis).
[0033] The measuring device of the insulation resistance of the vehicle DC high voltage system of the present invention is connected with a system to be tested, and is used to measure the insulation resistance of the system to be tested; generally speaking, the system to be tested includes a D...
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
| Property | Measurement | Unit |
|---|---|---|
| Amplitude | aaaaa | aaaaa |
| Amplitude | aaaaa | aaaaa |
| Internal resistance | aaaaa | aaaaa |
Login to View More
Abstract
Disclosed are a measurer for insulation resistance of a direct-current high-voltage system for a vehicle and a method. The measurer is connected with a system to be measured, and the system to be measured comprises the direct-current high-voltage system and an electric chassis; the measurer comprises a measuring signal generator unit, a sampling resistance unit and an MCU (microprogrammed control unit); both the measuring signal generator unit and the sampling resistance unit are connected with the MCU, an output end of the measuring signal generator unit is connected with the electric chassis of the system to be measured, and measuring current generated by the measuring signal generator unit flows through the high-voltage system via an insulation resistor and a leaked capacitor, flows through an anode and a cathode of the high-voltage system and flows back to the sampling resistance unit of the measurer; and the MCU carries out A / D (analog / digital) conversion for voltage signals of the sampling resistance unit and calculates the insulation resistor. The measurer not only can respond insulation faults of any parts of the high-voltage system, but also seldom affects insulation of the total vehicle, and a measuring circuit does not need to be opened when a withstand voltage test is carried out for the total vehicle.
Description
technical field [0001] The present invention relates to a measurement technology of insulation resistance, in particular to a vehicle-used electric vehicle (including pure electric vehicles, hybrid vehicles, fuel cell vehicles, super capacitor vehicles, etc.), railway electric locomotives, power systems, etc. A measuring device and method for insulation resistance of a DC high voltage system. Background technique [0002] There is a set of power battery packs in the high-voltage system of electric vehicles as an energy storage device. In order to ensure the safe operation of the vehicle, it is necessary to design a special detection device for real-time online monitoring of the insulation resistance between the DC high-voltage system and the electric chassis. [0003] Most of the existing technologies refer to the measurement method recommended in the standard "GB / T 18384.1-2001 Vehicle Energy Storage Device 6.1 Power Battery Insulation Resistance 6.1.1 Measurement Method",...
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 IPC IPC(8): G01R27/02
Inventor 甄洪亮
Owner 河北深海电器有限公司