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Vehicle-mounted charger, integrated circuit of vehicle-mounted DC/DC, and electric vehicle

An on-board charger and integrated circuit technology, which is applied to electric vehicles, electric vehicle charging technology, battery circuit devices, etc., can solve the problems of unfavorable platformization, large assembly volume, and low integration, so as to reduce the cost of the whole vehicle and improve The effect of integration degree and total weight reduction

Pending Publication Date: 2020-07-10
SHANGHAI ELECTRICGROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of low integration, large assembly volume, high cost, mutual influence, and unfavorable platformization in the prior art for the integration scheme of on-board charger and on-board DC / DC. It is to provide an integrated circuit of a car charger and a car DC / DC, and an electric vehicle

Method used

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  • Vehicle-mounted charger, integrated circuit of vehicle-mounted DC/DC, and electric vehicle
  • Vehicle-mounted charger, integrated circuit of vehicle-mounted DC/DC, and electric vehicle
  • Vehicle-mounted charger, integrated circuit of vehicle-mounted DC/DC, and electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 1 As shown, the on-board charger and the on-board DC / DC integrated circuit of this embodiment include a PFC module 1, a high-voltage AC side power switch module 2, an AC transformer module 3, a mode switching module 4, a high-voltage DC side power switch module 5, DC transformer module 6 , low voltage DC side power switch module 7 and main control module 8 .

[0060] The PFC module 1, the high-voltage AC side power switch module 2 and the AC transformer module 3 are electrically connected in sequence, the low-voltage DC side power switch module 7 is electrically connected to the DC transformer module 6, and the AC transformer module 3 and the DC transformer module 6 pass through the mode The switching module 4 is electrically connected to the high-voltage DC side power switch module 5 ; the mode switching module 4 is electrically connected to the main control module 8 .

[0061] The PFC module 1 is also electrically connected to an external power supply ...

Embodiment 2

[0084] Such as figure 2 As shown, the integrated circuit of the on-board charger and the on-board DC / DC of this embodiment is a further improvement on Embodiment 1, specifically:

[0085] The PFC module 1 includes a first inductor L1, a first capacitor C1, a first power switch tube unit Q1, a second power switch tube unit Q2, a third power switch tube unit Q3 and a fourth power switch tube unit Q4.

[0086] Wherein, one end of the first inductance L1 is electrically connected to one end of an external power supply, and the other end of the first inductance L1 is respectively electrically connected to one end of the first power switching tube unit Q1 and one end of the third power switching tube unit Q3; the second power One end of the switch tube unit Q2 and one end of the fourth power switch tube unit Q4 are both electrically connected to the other end of the external power supply;

[0087] The other end of the first power switch tube unit Q1 and the other end of the second...

Embodiment 3

[0126] The on-board charger and the on-board DC / DC integrated circuit in the electric vehicle embodiment 1 or 2 of this embodiment.

[0127] The electric vehicle in this embodiment is equipped with an on-board charger and an on-board DC / DC integrated circuit, which optimizes the layout space of the vehicle and reduces the cost of the vehicle.

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Abstract

The invention discloses a vehicle-mounted charger, an integrated circuit of the vehicle-mounted charger, and an electric vehicle. The integrated circuit comprises a PFC module, a high-voltage AC sidepower switch module, an AC voltage transformation module, a mode switching module, a high-voltage DC side power switch module, a DC voltage transformation module, a low-voltage DC side power switch module and a main control module. And the main control module is used for controlling the mode switching module to switch the integrated circuit to a working mode according to an external triggering condition, including a charging mode, a discharging mode and a DC / DC working mode. According to the integrated circuit, the vehicle-mounted charger and the vehicle-mounted DC / DC are provided with respective independent transformers; and the vehicle-mounted charger transformer output side power circuit and the vehicle-mounted DC / DC input side power circuit are shared, so that the total weight of an integrated circuit is reduced by fully utilizing an integration technology, the size is reduced, the cost is reduced, the platformization of a product is easy to realize, the arrangement space of the whole vehicle is optimized on the whole, and the cost of the whole vehicle is reduced.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a vehicle-mounted charger, a vehicle-mounted DC / DC (direct current / direct current) integrated circuit, and an electric vehicle. Background technique [0002] As a clean energy vehicle, electric vehicles have the advantages of high energy utilization efficiency, energy saving, environmental protection and low noise, and become the main development direction of future transportation. Among them, the on-board charger and on-board DC / DC are important components of electric vehicles. The on-board charger is used to convert the mains power into direct current to charge the power battery pack, and the on-board DC / DC is used to convert the high-voltage direct current in the power battery pack into Low voltage direct current powers low voltage loads. [0003] With the increasing cost pressure of electric vehicles, vehicle components are gradually developing in the direction of ...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/42H02M7/797H02J7/00H02J7/06B60L53/22
CPCH02M3/3353H02M1/4208H02M7/797H02J7/06B60L53/22Y02T10/70Y02T10/7072Y02T90/14Y02T10/92
Inventor 李福生张霞曹碧颖
Owner SHANGHAI ELECTRICGROUP CORP
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