Unlock instant, AI-driven research and patent intelligence for your innovation.

Pre-charging circuits, DC-DC converters and hybrid vehicles

A converter and circuit technology, applied in electric vehicles, converter types, DC power input conversion to DC power output, etc., can solve the problems of inrush current, safety MOSFET danger, etc., to solve the problem of inrush current and reduce the maximum current. Effect

Active Publication Date: 2022-05-06
VALEO INTERIOR CONTROLS (SHENZHEN) CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the first stage, if the safety MOSFET is turned on when the voltage on C1 and C2 is 0V, the problem of excitation inrush current will occur. Due to the limitation of its safe operation area (Safety Operation Area, SOA), the excitation inrush current is very important for the safety MOSFET is very dangerous

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pre-charging circuits, DC-DC converters and hybrid vehicles
  • Pre-charging circuits, DC-DC converters and hybrid vehicles
  • Pre-charging circuits, DC-DC converters and hybrid vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] figure 2 A schematic block diagram of a pre-charging circuit 200 for a DC-DC converter according to an embodiment of the present disclosure is shown.

[0025] Such as figure 2 As shown in , the pre-charging circuit 200 includes an auxiliary power generating part 201 , a constant current source circuit 202 and a switching part 203 .

[0026] The auxiliary power generating part 201 is connected to a first power source, such as 14V, and is...

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

No PUM Login to View More

Abstract

Embodiments of the present disclosure relate to a precharge circuit for a direct current (DC)-DC converter, a direct current DC-DC converter for converting a voltage between a first power source and a second power source, and a DC-DC converter including the same hybrid car. The pre-charging circuit includes: an auxiliary power generating part connected to the first power source and configured to generate an auxiliary power source; a constant current source circuit configured to supply a charging current to the outside based on the auxiliary power source; and a switch part connected to the auxiliary power source Between the generating component and the constant current source circuit, wherein the output terminal of the constant current source circuit is connected to the safety device of the DC-DC converter.

Description

technical field [0001] Embodiments of the present disclosure relate to a precharge circuit for a direct current (DC)-DC converter, a direct current DC-DC converter for converting a voltage between a first power source and a second power source, and a DC-DC converter including the same hybrid car. Background technique [0002] In HEVs, to utilize high electrical loads such as electric compressors, electric heaters, power steering and electric pumps, an additional 48V battery system level is defined. A DC-DC converter needs to be arranged between the 48V battery system and the 14V battery system. [0003] figure 1 A schematic diagram showing the connection of a DC-DC converter between a 48V battery system and a 14V battery system, where Unit 1 and Unit 2 are the two main circuits of the DC-DC converter. In this circuit connection, if the switch S1 is switched on when there is no voltage across the capacitor C2, an arcing effect occurs. In order to reduce this arcing effect...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36H02M1/32
CPCH02M1/32H02M1/36H02M3/33523H02J7/0031B60L2210/10B60L2270/20B60L58/20H02J7/342Y02T10/70Y02T10/72H02M1/0087H02M1/007H02M1/0093
Inventor 刘博郭志凌戴斌罗兰
Owner VALEO INTERIOR CONTROLS (SHENZHEN) CO LTD