Emergency power-on circuit and method and car

A relay circuit and circuit technology, which is applied to electric vehicles, battery circuit devices, circuit devices, etc., can solve the problems that the car cannot be powered on and start, and achieve the effect of improving the reliability of use

Inactive Publication Date: 2018-05-04
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an emergency power-on circuit, method and car to solve the problem in the prior art that the car cannot be powered on and started when the battery is undervoltage or damaged

Method used

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  • Emergency power-on circuit and method and car
  • Emergency power-on circuit and method and car
  • Emergency power-on circuit and method and car

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Embodiment Construction

[0048] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0049] See figure 1 , which shows a schematic structural diagram of the emergency power-on circuit provided by the embodiment of the present invention.

[0050] An embodiment of the present invention provides an emergency power-on circuit, which is applied to automobiles. The emergency power-on circuit may include: a power battery pack 110, a battery management system 120, a relay circuit 130, a first DC / DC converter 140, a second DC / DC converter 150 and an emergency switch circuit 160 . Here, the power battery pack 110, the battery management system 120, the relay circuit 130 and the first DC / DC converter 140 are set inside the power battery pack of the vehicle, and the second DC / DC converter 150 and the emergency switch circuit 160 are set in the pow...

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PUM

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Abstract

The invention provides an emergency power-on circuit and method and a car. The emergency power-on circuit comprises a power battery pack, a battery management system, a relay circuit, a first DC/DC convertor, a second DC/DC convertor and an emergency switch circuit. The first DC/DC convertor, the second DC/DC convertor and the battery management system are separately connected to the two poles ofthe power battery pack; the emergency switch circuit is connected with the first DC/DC convertor; the output end of the first DC/DC convertor is connected with the battery management system, and whenthe first DC/DC convertor is turned on, the output voltage of the power battery pack is converted by the first DC/DC convertor into a first low voltage, so that power is supplied to the battery management system, and the battery management system is waked up; the relay circuit is connected between the second DC/DC convertor and the power battery pack in series, and the battery management system isconnected with the relay circuit and the second DC/DC convertor. By means of the emergency power-on circuit, power-on of the car can be achieved under the condition that a storage battery is undervoltage or is damaged, and the use reliability of the car is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an emergency power-on circuit, method and automobile. Background technique [0002] With the continuous development and progress of automobile technology and the continuous increase of car ownership, cars have become an indispensable part of people's daily life. Existing, in the use of electric vehicles, due to problems such as charging and discharging of the car, the battery of the car may be undervoltage or damaged; as one of the important components of the car, the battery needs to be supplied to the controller when the car is started. , relays, etc., so that the car can be powered on and started normally. Therefore, when the battery is undervoltage or damaged, the car will not start normally. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an emergency power-on circuit, method and automobile to solve the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00B60L3/00B60L11/18
CPCB60L3/0046B60L58/10H02J2207/20Y02T10/70Y02T10/72
Inventor 嵇黎明王娅蓉吴丽华段雪艳
Owner BEIJING ELECTRIC VEHICLE
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