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Auxiliary low-voltage power supply system for pure electric vehicle

A vehicle auxiliary and power supply system technology, applied in electric vehicles, vehicle energy storage, vehicle components, etc., can solve problems such as being unfavorable to reduce the overall cost of the electronic control system, burning the bus bundle, and generating large heat, so as to ensure normal power supply, The effect of reducing the failure rate and compact structure

Active Publication Date: 2021-01-12
NEW POWER ELECTRIC (JINGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the power supply system of pure electric vehicles at this stage, the high voltage output by the power battery is supplied to drive the motor to drive the vehicle, while the low-voltage electrical equipment on the vehicle needs to be driven by low-voltage direct current, which requires the installation of a DC / DC converter in the electronic control system. High voltage is converted to low voltage, but in actual use, due to the large heat generated by the DC / DC converter, overheating damage often occurs, and even the bus harness is burned. At present, there is no effective means in the industry to reduce the heat generated by the DC / DC converter or failure rate
The common improvement method is to add various sensors, such as temperature sensors, to detect the working status of the DC / DC converter in real time, but the above technical solutions can only alleviate or detect possible failures to a certain extent, and cannot really solve the problem
At the same time, the high cost of the DC / DC converter is not conducive to reducing the overall cost of the electronic control system

Method used

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  • Auxiliary low-voltage power supply system for pure electric vehicle
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  • Auxiliary low-voltage power supply system for pure electric vehicle

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Embodiment Construction

[0025] 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 only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] Pure electric vehicle auxiliary low-voltage power supply system, such as fi...

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Abstract

The invention discloses a pure electric vehicle auxiliary low-voltage power supply system which comprises a driving motor and a generator connected with the output end of the driving motor through a transmission device, and is characterized in that the output end of the generator is electrically connected with vehicle-mounted low-voltage electric equipment; the generator is a low-voltage direct-current generator. The problem that in the prior art, a DC / DC converter is prone to heating to cause faults is solved, and the fault occurrence rate is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to an auxiliary low-voltage power supply system for pure electric vehicles. Background technique [0002] With the rapid development of new energy and other industries, pure electric vehicles are becoming more and more popular. They are not limited to small passenger vehicles, and have further appeared in medium and large passenger vehicles and engineering vehicles. In the power supply system of pure electric vehicles at this stage, the high voltage output by the power battery is supplied to drive the motor to drive the vehicle, while the low-voltage electrical equipment on the vehicle needs to be driven by low-voltage direct current, which requires the installation of a DC / DC converter in the electronic control system. High voltage is converted to low voltage, but in actual use, due to the large heat generated by the DC / DC converter, overheating damage often...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/14
CPCB60L50/14Y02T10/7072
Inventor 杨冬萍张金凤朱鹏钢严明王灵康
Owner NEW POWER ELECTRIC (JINGZHOU) CO LTD
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